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Chiu-Wen Chen
Department of Marine Environmental Engineering, National Kaohsiung University of Science and Technology, Kaohsiung 81157, Taiwan

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Journal article
Published: 16 August 2021 in Nutrients
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Lemon (Citrus limon) has antioxidant, immunoregulatory, and blood lipid-lowering properties. This study aimed to determine the effect of the lemon fermented product (LFP) which is lemon fermented with Lactobacillus OPC1 to prevent obesity. The inhibition of lipid accumulation in 3T3-L1 adipocytes is examined using a Wistar rat model fed a high-fat diet to verify the anti-obesity efficacy and mechanism of LFP. Here, it was observed that LFP reduced cell proliferation and inhibited the lipid accumulation (8.3%) of 3T3-L1 adipocytes. Additionally, LFP reduced body weight (9.7%) and fat tissue weight (25.7%) of rats; reduced serum TG (17.0%), FFA (17.9%), glucose (29.3%) and ketone body (6.8%); and increased serum HDL-C (17.6%) and lipase activity (17.8%). LFP regulated the mRNA expression of genes related to lipid metabolism (PPARγ, C/EBPα, SREBP-1c, HSL, ATGL, FAS, and AMPK). Therefore, LFP reduces body weight and lipid accumulation by regulating the mRNA expression of genes related to lipid metabolism. Overall, our results implicate LFP as a potential dietary supplement for the prevention of obesity.

ACS Style

Chih-Chung Wu; Yu-Wen Huang; Chih-Yao Hou; Ya-Ting Chen; Cheng-Di Dong; Chiu-Wen Chen; Reeta-Rani Singhania; Jie-Yin Leang; Shu-Ling Hsieh. The Anti-Obesity Effects of Lemon Fermented Products in 3T3-L1 Preadipocytes and in a Rat Model with High-Calorie Diet-Induced Obesity. Nutrients 2021, 13, 2809 .

AMA Style

Chih-Chung Wu, Yu-Wen Huang, Chih-Yao Hou, Ya-Ting Chen, Cheng-Di Dong, Chiu-Wen Chen, Reeta-Rani Singhania, Jie-Yin Leang, Shu-Ling Hsieh. The Anti-Obesity Effects of Lemon Fermented Products in 3T3-L1 Preadipocytes and in a Rat Model with High-Calorie Diet-Induced Obesity. Nutrients. 2021; 13 (8):2809.

Chicago/Turabian Style

Chih-Chung Wu; Yu-Wen Huang; Chih-Yao Hou; Ya-Ting Chen; Cheng-Di Dong; Chiu-Wen Chen; Reeta-Rani Singhania; Jie-Yin Leang; Shu-Ling Hsieh. 2021. "The Anti-Obesity Effects of Lemon Fermented Products in 3T3-L1 Preadipocytes and in a Rat Model with High-Calorie Diet-Induced Obesity." Nutrients 13, no. 8: 2809.

Journal article
Published: 06 August 2021 in Membranes
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In order to overcome the challenges of low permeate flux (Jp) and the accompanying reverse solute flux (JS) during the forward osmosis (FO) membrane separation process, we synthesized four hybrid materials of polyacid-based organic compounds and incorporated them into the selective polyamide (PA) layer to make novel thin-film nanocomposite (TFN) FO membranes. The Jp and JS of each membrane were evaluated and used along with membrane selectivity (Jp/JS) as indicators of membrane separation performance. The fabricated and modified membranes were also characterized for ridge and valley surface morphologies with increasing hydrophilicity and finger-shaped parallel channels in the PSf substrate. Moreover, two highly hydrophilic nanoparticles of graphene oxide (GO) and titanium oxide (TiO2) were introduced with the hybrid materials for PA modification, which can further enhance the Jp of the TFN membranes. The highest Jp of the TFN membranes achieved 12.1 L/m2-h using 0.1% curcumin-acetoguanamine @ cerium polyacid (CATCP) and 0.0175% GO. The characteristic peaks of the hybrid materials were detected on the membrane surface using attenuated total reflectance Fourier transform infrared (ATR-FTIR) spectroscopy, evidencing successful incorporation of the hybrid materials during membrane modification. Here, we present the novel TFN membranes using hybrid materials for separation applications. The reactions for synthesizing the hybrid materials and for incorporating them with PA layer are proposed.

ACS Style

Yi-Li Lin; Bharath Samannan; Kuo-Lun Tung; Jeyabalan Thavasikani; Cheng-Di Dong; Chiu-Wen Chen; Chung-Hsin Wu; Yu-Rong Cheng. Synthesizing Various Organic Polyacid Compounds for Modifying Forward Osmosis Membranes to Enhance Separation Performance. Membranes 2021, 11, 597 .

AMA Style

Yi-Li Lin, Bharath Samannan, Kuo-Lun Tung, Jeyabalan Thavasikani, Cheng-Di Dong, Chiu-Wen Chen, Chung-Hsin Wu, Yu-Rong Cheng. Synthesizing Various Organic Polyacid Compounds for Modifying Forward Osmosis Membranes to Enhance Separation Performance. Membranes. 2021; 11 (8):597.

Chicago/Turabian Style

Yi-Li Lin; Bharath Samannan; Kuo-Lun Tung; Jeyabalan Thavasikani; Cheng-Di Dong; Chiu-Wen Chen; Chung-Hsin Wu; Yu-Rong Cheng. 2021. "Synthesizing Various Organic Polyacid Compounds for Modifying Forward Osmosis Membranes to Enhance Separation Performance." Membranes 11, no. 8: 597.

Journal article
Published: 08 July 2021 in Sustainability
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Based on the International Convention for the Control and Management of Ships’ Ballast Water and Sediments (the Ballast Water Management Convention, or BWM Convention) of the International Maritime Organization, from 8 September 2017, all ships must have an approved Ballast Water Management Treatment System (BWTS) to prevent the invasion of alien species through the discharge of ballast. Generally speaking, the need for an approved BWTS is limited to large vessels, as they are too large or too expensive for small vessels to install. This study aims to propose a simple ballast-free approach for small vessels (e.g., tugs, workboats, research vessels) that require ballast to compensate for the weight loss of fuel when sailing. Our approach involves refitting the dedicated ballast tank of these small vessels to be drinking water tanks and filling the tanks with onboard-generated distilled or reverse osmosis water to adjust the stability of the ships. We assessed our approach using three vessels. Two ships using our proposed method were certified by the American Bureau of Shipping as containing no ballast water tank, and not being subject to the BWM Convention. This study provides an environmentally harmless, easy to use, and economical approach for small vessels to comply with the BWM Convention.

ACS Style

Kun-Tu Lu; Hon-Kit Lui; Chen-Tung Chen; Li-Lian Liu; Lei Yang; Cheng-Di Dong; Chiu-Wen Chen. Using Onboard-Produced Drinking Water to Achieve Ballast-Free Management. Sustainability 2021, 13, 7648 .

AMA Style

Kun-Tu Lu, Hon-Kit Lui, Chen-Tung Chen, Li-Lian Liu, Lei Yang, Cheng-Di Dong, Chiu-Wen Chen. Using Onboard-Produced Drinking Water to Achieve Ballast-Free Management. Sustainability. 2021; 13 (14):7648.

Chicago/Turabian Style

Kun-Tu Lu; Hon-Kit Lui; Chen-Tung Chen; Li-Lian Liu; Lei Yang; Cheng-Di Dong; Chiu-Wen Chen. 2021. "Using Onboard-Produced Drinking Water to Achieve Ballast-Free Management." Sustainability 13, no. 14: 7648.

Review
Published: 21 June 2021 in Sustainability
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Managing the concentration of atmospheric CO2 requires a multifaceted engineering strategy, which remains a highly challenging task. Reducing atmospheric CO2 (CO2R) by converting it to value-added chemicals in a carbon neutral footprint manner must be the ultimate goal. The latest progress in CO2R through either abiotic (artificial catalysts) or biotic (natural enzymes) processes is reviewed herein. Abiotic CO2R can be conducted in the aqueous phase that usually leads to the formation of a mixture of CO, formic acid, and hydrogen. By contrast, a wide spectrum of hydrocarbon species is often observed by abiotic CO2R in the gaseous phase. On the other hand, biotic CO2R is often conducted in the aqueous phase and a wide spectrum of value-added chemicals are obtained. Key to the success of the abiotic process is understanding the surface chemistry of catalysts, which significantly governs the reactivity and selectivity of CO2R. However, in biotic CO2R, operation conditions and reactor design are crucial to reaching a neutral carbon footprint. Future research needs to look toward neutral or even negative carbon footprint CO2R processes. Having a deep insight into the scientific and technological aspect of both abiotic and biotic CO2R would advance in designing efficient catalysts and microalgae farming systems. Integrating the abiotic and biotic CO2R such as microbial fuel cells further diversifies the spectrum of CO2R.

ACS Style

TsingHai Wang; Cheng-Di Dong; Jui-Yen Lin; Chiu-Wen Chen; Jo-Shu Chang; Hyunook Kim; Chin-Pao Huang; Chang-Mao Hung. Recent Advances in Carbon Dioxide Conversion: A Circular Bioeconomy Perspective. Sustainability 2021, 13, 6962 .

AMA Style

TsingHai Wang, Cheng-Di Dong, Jui-Yen Lin, Chiu-Wen Chen, Jo-Shu Chang, Hyunook Kim, Chin-Pao Huang, Chang-Mao Hung. Recent Advances in Carbon Dioxide Conversion: A Circular Bioeconomy Perspective. Sustainability. 2021; 13 (12):6962.

Chicago/Turabian Style

TsingHai Wang; Cheng-Di Dong; Jui-Yen Lin; Chiu-Wen Chen; Jo-Shu Chang; Hyunook Kim; Chin-Pao Huang; Chang-Mao Hung. 2021. "Recent Advances in Carbon Dioxide Conversion: A Circular Bioeconomy Perspective." Sustainability 13, no. 12: 6962.

Research article
Published: 26 May 2021 in Journal of Sustainable Metallurgy
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This study focuses on the utilization of BOF slag and dredged harbor sediment in the construction applications. Based on the particle size of BOF slag, the sediment–slag mixtures were reused as road base materials, substitutes of fine sand in cement mortar, and artificial lightweight aggregate (LWA). The physical and mechanical properties were examined by Proctor compaction test, California bearing ratio (CBR) test, compressive strength test, autoclave expansion test as well as LWA quality determination. Results show that dredged harbor sediments admixed with BOF slag can effectively strengthen their load-bearing capacity and mechanical strength. The sediment–slag mixtures with > 50% of BOF slag have CBR high enough as road base materials. The compressive strength of cement mortar prepared from the sediment–slag mixtures obviously increased with the proportion of BOF slag. However, the amount of BOF slag admixed into the dredged harbor sediment is recommended not exceeding 40% to avoid volume expansion caused by free-CaO hydration. For LWA preparation, appropriately adding BOF slag (~ 25% in weight) into dredged harbor sediment is beneficial to improve the crushing strength of LWA. Low leaching concentration of heavy metals ensures that the sediment–slag mixtures are safe in further practical applications. Increasing utilization of dredged harbor sediment by admixing with BOF slag not only can reduce the environmental impacts associated with their disposal, but also can create valuable products for construction industry.

ACS Style

Yee Cheng Lim; Chih-Feng Chen; Chiu-Wen Chen; Cheng-Di Dong. Application of Basic Oxygen Furnace Slag in Increased Utilization of Dredged Harbor Sediment. Journal of Sustainable Metallurgy 2021, 7, 704 -717.

AMA Style

Yee Cheng Lim, Chih-Feng Chen, Chiu-Wen Chen, Cheng-Di Dong. Application of Basic Oxygen Furnace Slag in Increased Utilization of Dredged Harbor Sediment. Journal of Sustainable Metallurgy. 2021; 7 (2):704-717.

Chicago/Turabian Style

Yee Cheng Lim; Chih-Feng Chen; Chiu-Wen Chen; Cheng-Di Dong. 2021. "Application of Basic Oxygen Furnace Slag in Increased Utilization of Dredged Harbor Sediment." Journal of Sustainable Metallurgy 7, no. 2: 704-717.

Review
Published: 18 May 2021 in Sustainability
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Biochar is a carbon-rich material prepared from the pyrolysis of biomass under various conditions. Recently, biochar drew great attention due to its promising potential in climate change mitigation, soil amendment, and environmental control. Obviously, biochar can be a beneficial soil amendment in several ways including preventing nutrients loss due to leaching, increasing N and P mineralization, and enabling the microbial mediation of N2O and CO2 emissions. However, there are also conflicting reports on biochar effects, such as water logging and weathering induced change of surface properties that ultimately affects microbial growth and soil fertility. Despite the voluminous reports on soil and biochar properties, few studies have systematically addressed the effects of biochar on the sequestration of carbon, nitrogen, and phosphorus in soils. Information on microbially-mediated transformation of carbon (C), nitrogen (N), and phosphorus (P) species in the soil environment remains relatively uncertain. A systematic documentation of how biochar influences the fate and transport of carbon, phosphorus, and nitrogen in soil is crucial to promoting biochar applications toward environmental sustainability. This report first provides an overview on the adsorption of carbon, phosphorus, and nitrogen species on biochar, particularly in soil systems. Then, the biochar-mediated transformation of organic species, and the transport of carbon, nitrogen, and phosphorus in soil systems are discussed. This review also reports on the weathering process of biochar and implications in the soil environment. Lastly, the current knowledge gaps and priority research directions for the biochar-amended systems in the future are assessed. This review focuses on literatures published in the past decade (2009–2021) on the adsorption, degradation, transport, weathering, and transformation of C, N, and P species in soil systems with respect to biochar applications.

ACS Style

Shu-Yuan Pan; Cheng-Di Dong; Jenn-Fang Su; Po-Yen Wang; Chiu-Wen Chen; Jo-Shu Chang; Hyunook Kim; Chin-Pao Huang; Chang-Mao Hung. The Role of Biochar in Regulating the Carbon, Phosphorus, and Nitrogen Cycles Exemplified by Soil Systems. Sustainability 2021, 13, 5612 .

AMA Style

Shu-Yuan Pan, Cheng-Di Dong, Jenn-Fang Su, Po-Yen Wang, Chiu-Wen Chen, Jo-Shu Chang, Hyunook Kim, Chin-Pao Huang, Chang-Mao Hung. The Role of Biochar in Regulating the Carbon, Phosphorus, and Nitrogen Cycles Exemplified by Soil Systems. Sustainability. 2021; 13 (10):5612.

Chicago/Turabian Style

Shu-Yuan Pan; Cheng-Di Dong; Jenn-Fang Su; Po-Yen Wang; Chiu-Wen Chen; Jo-Shu Chang; Hyunook Kim; Chin-Pao Huang; Chang-Mao Hung. 2021. "The Role of Biochar in Regulating the Carbon, Phosphorus, and Nitrogen Cycles Exemplified by Soil Systems." Sustainability 13, no. 10: 5612.

Journal article
Published: 26 March 2021 in Science of The Total Environment
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Spatiotemporal variations in the abundance of microplastics (MPs) in surface sediments along the southwestern coast of Taiwan (including harbor and coastal regions) were investigated and the diversity, degree of weathering, and inventory of MPs in the sediments further quantified. The spatiotemporal variations of MP characteristics were used to assess possible transport routes of MPs. Results indicated that the average MP abundance in the partially-enclosed harbor region was 79.3 MPs in 1 kg dry sediment (item/kg dw), which was 3–5 times higher than that in the coastal region. Average MP abundance during the dry season (36.5±52.2 item/kg dw) was relatively higher than that during the wet season (22.3±23.2 item/kg dw). The dominant MPs were small (0.1–1.0 mm, 90%), colored (62.3%), and consisted mainly of fibers (54.1%) and fragments (40.5%). Analysis by μFTIR revealed the presence of ten types of polymers in the MPs, with the most abundant being polypropylene (35.1%), rayon (33.2%), and polystyrene (10.0%). Values of the microplastic diversity integrated index (MPDII) indicated that MP diversity was greater in the harbor region (MPDII = 0.62) than in the coastal region (MPDII = 0.51–0.54), and greater during the wet season (MPDII = 0.60) than during the dry season (MPDII = 0.50). As indicated by values of the MP carbonyl index (CI), the MPs exhibited a high degree of oxidation (CI >0.31) that appeared unrelated to spatiotemporal variations. In the dry season, MP inventory was 12.2 tons and the wet season inventory was 8.1 tons. The hydrodynamic forces may be an influenced force for the spatiotemporal distribution patterns of the MPs in surface sediments. MPs could accumulate in the surface sediments during the dry season and resuspend in the wet season with the higher rainfall and then migrate towards the deep sea following the water flow.

ACS Style

Chih-Feng Chen; Yun-Ru Ju; Yee Cheng Lim; Chiu-Wen Chen; Cheng-Di Dong. Seasonal variation of diversity, weathering, and inventory of microplastics in coast and harbor sediments. Science of The Total Environment 2021, 781, 146610 .

AMA Style

Chih-Feng Chen, Yun-Ru Ju, Yee Cheng Lim, Chiu-Wen Chen, Cheng-Di Dong. Seasonal variation of diversity, weathering, and inventory of microplastics in coast and harbor sediments. Science of The Total Environment. 2021; 781 ():146610.

Chicago/Turabian Style

Chih-Feng Chen; Yun-Ru Ju; Yee Cheng Lim; Chiu-Wen Chen; Cheng-Di Dong. 2021. "Seasonal variation of diversity, weathering, and inventory of microplastics in coast and harbor sediments." Science of The Total Environment 781, no. : 146610.

Research article
Published: 22 February 2021 in Journal of Environmental Science and Health, Part A
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This study evaluated the level of the contaminant of the heavy metals in sludge from different sources and the ecological risk criteria associated with it was also analyzed to establish its reuse in agriculture. The sludge samples were collected from the water plant (WTP), wastewater treatment plant (WWTP), and industrial water treatment plant (IPT) in Taiwan. The inductively coupled plasma mass spectrometry was used to measure the trace metals in sludge. The pollution level and ecological risk criteria for heavy metals in sludge were also used to evaluate its reuse in agriculture. The result shows the average concentrations of trace metals in sludge for three groups (WTP, WWTP, and ITP). Significant correlations were found between concentrations of Zn-Ag (p < 0.001). The higher values of I geo showed in ITP, indicated Hg to be a major pollutant. In Taiwan, the regulations did not establish the reuse of sludge in agriculture. However, the concentration level of trace metals in sludge was particularly lower than the regular levels in most groups, like WTP and WWTP groups. The industrial sludge was not recommended for the use in agriculture. The results of this study can be used for regular monitoring to establish a reference for sludge management and application to agriculture.

ACS Style

Ming-Huang Wang; Chih-Feng Chen; Yun-Ru Ju; Mei-Ling Tsai; Chiu-Wen Chen; Cheng-Di Dong. Distribution and environmental risk assessment of trace metals in sludge from multiple sources in Taiwan. Journal of Environmental Science and Health, Part A 2021, 56, 481 -491.

AMA Style

Ming-Huang Wang, Chih-Feng Chen, Yun-Ru Ju, Mei-Ling Tsai, Chiu-Wen Chen, Cheng-Di Dong. Distribution and environmental risk assessment of trace metals in sludge from multiple sources in Taiwan. Journal of Environmental Science and Health, Part A. 2021; 56 (4):481-491.

Chicago/Turabian Style

Ming-Huang Wang; Chih-Feng Chen; Yun-Ru Ju; Mei-Ling Tsai; Chiu-Wen Chen; Cheng-Di Dong. 2021. "Distribution and environmental risk assessment of trace metals in sludge from multiple sources in Taiwan." Journal of Environmental Science and Health, Part A 56, no. 4: 481-491.

Journal article
Published: 19 February 2021 in Journal of Analytical and Applied Pyrolysis
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Biochar is a promising material for removing contaminants in sediments. Here, thermal carbonization was carried out to convert a brown seaweed (Sargassum duplicatum) into a high value-added biochar, which was used to activate peroxymonosulfate (PMS) in environmental remediation applications. XRD, FTIR, XPS, C-H-O elemental analysis, and SEM results showed that pyrolysis temperature (300–700 °C) had a significant influence on the crystal structure, surface functional groups, chemical composition, morphology and porosity of the brown seaweed-derived biochar (BSB). When the biochar samples were tested with PMS for removing polycyclic aromatic hydrocarbons (PAHs, a type of carcinogenic and refractory organic compounds) from marine sediments, pyrolysis temperature also showed crucial effects, and the sample pyrolyzed at 700 °C was most effective for the oxidative removal of PAHs. Under the optimum conditions (pH0 = 3.0, [BSB] =3.0 g/L, [PMS]:∑[PAH] = 1:1, and 10 h reaction time), 77 % of PAHs was eliminated with the maximum degradation rates of 87, 79, 67, 55, and 56 % for the 6-ring, 5-ring, 4-ring, 3-ring, and 2-ring PAHs, respectively. EPR results confirmed that SO4•– and HO• radicals play main roles in the catalytic degradation of PAHs. Based on these results, the sustainably produced BSB has good prospects for the seaweed bioeconomy and remediating organics-contaminated sediments.

ACS Style

Chang-Mao Hung; Chin-Pao Huang; Jia-Wei Cheng; Chiu-Wen Chen; Cheng-Di Dong. Production and characterization of a high value-added seaweed-derived biochar: Optimization of pyrolysis conditions and evaluation for sediment treatment. Journal of Analytical and Applied Pyrolysis 2021, 155, 105071 .

AMA Style

Chang-Mao Hung, Chin-Pao Huang, Jia-Wei Cheng, Chiu-Wen Chen, Cheng-Di Dong. Production and characterization of a high value-added seaweed-derived biochar: Optimization of pyrolysis conditions and evaluation for sediment treatment. Journal of Analytical and Applied Pyrolysis. 2021; 155 ():105071.

Chicago/Turabian Style

Chang-Mao Hung; Chin-Pao Huang; Jia-Wei Cheng; Chiu-Wen Chen; Cheng-Di Dong. 2021. "Production and characterization of a high value-added seaweed-derived biochar: Optimization of pyrolysis conditions and evaluation for sediment treatment." Journal of Analytical and Applied Pyrolysis 155, no. : 105071.

Journal article
Published: 17 January 2021 in Journal of Water Process Engineering
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The feasibility of applying alkaline modified-biochar prepared through pyrolysis of spent coffee ground (NaOH-SCG) in the elimination of tetracycline (TC) from different aqueous solutions was investigated through this study. The physico-chemical characterization of NaOH-SCG was scrutinized by distinct techniques. The PAHs concentration of NaOH-SCG (500 °C) was 693 μg kg−1, which do not exceed the international acceptable threshold of PAHs in biochar as reported by International Biochar Initiative (6–20 mg kg−1) and European Biochar Certificate (4 mg kg−1 for premium class, 6 mg kg−1 for basic class). From the experimental results, the adsorption capacity (qmax) of NaOH-SCG biochar (113.64 mg g−1) exhibited 2.9 times higher than that of the non-modified SCG (39.22 mg g−1). Furthermore, environmental factors, namely, pH and ions, affecting the interaction between biochar and TC was investigated. Alkaline modified-biochar exhibited high tetracycline adsorption capacity and therefore has a great prospect as an environmentally effective adsorbent in separation of hazardous chemicals from different aqueous solutions.

ACS Style

Van-Truc Nguyen; Thanh-Binh Nguyen; C.P. Huang; Chiu-Wen Chen; Xuan-Thanh Bui; Cheng-Di Dong. Alkaline modified biochar derived from spent coffee ground for removal of tetracycline from aqueous solutions. Journal of Water Process Engineering 2021, 40, 101908 .

AMA Style

Van-Truc Nguyen, Thanh-Binh Nguyen, C.P. Huang, Chiu-Wen Chen, Xuan-Thanh Bui, Cheng-Di Dong. Alkaline modified biochar derived from spent coffee ground for removal of tetracycline from aqueous solutions. Journal of Water Process Engineering. 2021; 40 ():101908.

Chicago/Turabian Style

Van-Truc Nguyen; Thanh-Binh Nguyen; C.P. Huang; Chiu-Wen Chen; Xuan-Thanh Bui; Cheng-Di Dong. 2021. "Alkaline modified biochar derived from spent coffee ground for removal of tetracycline from aqueous solutions." Journal of Water Process Engineering 40, no. : 101908.

Journal article
Published: 10 October 2020 in Journal of Alloys and Compounds
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Herein, the development of a one-dimensional all-inorganic perovskite nanofibers produced via a common route of electrospun is studied. Indeed, a series of inorganic perovskite nanofibers are synthesized via an electrospun approach. The following CsPbX3 (X = Cl, Br and I) nanofibers indicate composition-tunable photoluminescence (PL) emissions over the particular visible light window (from 450 to 670 nm), consisting of effective tunability of the optical properties. In this case, we present that the hybrids (CsPbX3) with various halide ratios, the method can be tunable in terms of morphology and optical. By tuning the composition of the CsPbX3 nanofibers, a power conversion efficiency of 7.79% under AM1.5G (cell area 0.5 cm2) has been approved. The all-inorganic nanofibers by electrospun has exhibited to be a valuable action to perform absorber layer that increase light benefit and charge collection for perovskite solar cells.

ACS Style

Linjer Chen; Yuliv Chuang; Wein-Duo Yang; Kuang-Chung Tsai; Chiu-Wen Chen; Cheng-Di Dong. All-inorganic perovskite CsPbX3 electrospun nanofibers with color-tunable photoluminescence and high performance optoelectronic applications. Journal of Alloys and Compounds 2020, 856, 157426 .

AMA Style

Linjer Chen, Yuliv Chuang, Wein-Duo Yang, Kuang-Chung Tsai, Chiu-Wen Chen, Cheng-Di Dong. All-inorganic perovskite CsPbX3 electrospun nanofibers with color-tunable photoluminescence and high performance optoelectronic applications. Journal of Alloys and Compounds. 2020; 856 ():157426.

Chicago/Turabian Style

Linjer Chen; Yuliv Chuang; Wein-Duo Yang; Kuang-Chung Tsai; Chiu-Wen Chen; Cheng-Di Dong. 2020. "All-inorganic perovskite CsPbX3 electrospun nanofibers with color-tunable photoluminescence and high performance optoelectronic applications." Journal of Alloys and Compounds 856, no. : 157426.

Journal article
Published: 17 September 2020 in Sustainability
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A series of experiments with different NaCl concentrations added to the PCB (printed circuit board) wastewater were prepared to investigate the chloride effect on the formation of aluminum floc and removal efficiency of Cu and Ni. The effects of pH, current density, and different concentration of NaCl were studied and the results are discussed. Results imply that chloride ions are favored to avoid the passivation of the aluminum anode in the EC (electro-coagulation) system. Chloride ions used as the electrolyte can facilitate the release of Al3+, which results in the current efficiency of over 100% in the EC system. For the PCB factory’s wastewater, the EC system could remove Cu2+ and Ni2+ effectively (both Cu and Ni concentration of treated wastewater was less than 1.0 mg/L within three minutes). PCB wastewater’s pH value could maintain stably about 9.0 in the EC system when the initial pH value was around 2.5. The estimated electricity consumption for treating PCB wastewater by the EC process was about 0.894 kWh for each meter of cubic wastewater.

ACS Style

Chien-Hung Huang; Shan-Yi Shen; Chiu-Wen Chen; Cheng-Di Dong; Mohanraj Kumar; Balasubramanian Dakshinamoorthy; Jih-Hsing Chang. Effect of Chloride Ions on Electro-Coagulation to Treat Industrial Wastewater Containing Cu and Ni. Sustainability 2020, 12, 7693 .

AMA Style

Chien-Hung Huang, Shan-Yi Shen, Chiu-Wen Chen, Cheng-Di Dong, Mohanraj Kumar, Balasubramanian Dakshinamoorthy, Jih-Hsing Chang. Effect of Chloride Ions on Electro-Coagulation to Treat Industrial Wastewater Containing Cu and Ni. Sustainability. 2020; 12 (18):7693.

Chicago/Turabian Style

Chien-Hung Huang; Shan-Yi Shen; Chiu-Wen Chen; Cheng-Di Dong; Mohanraj Kumar; Balasubramanian Dakshinamoorthy; Jih-Hsing Chang. 2020. "Effect of Chloride Ions on Electro-Coagulation to Treat Industrial Wastewater Containing Cu and Ni." Sustainability 12, no. 18: 7693.

Journal article
Published: 01 September 2020 in Journal of Environmental Management
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This work recovered the dredged sediment around Kaohsiung Harbor, Taiwan, for preparing lightweight aggregates (LWA), of which physicochemical properties as affected by the addition of basic-oxygen-furnace (BOF) slag and waste glass were investigated. LWA properties included water absorption, particle density, compressive strength, shrinkage, and microstructure of sintered pellets were evaluated to ensure feasibility of dredged harbor sediment reutilization technique. Results showed that adding appropriate amount of glass powders (~7%) to the mixtures of sediment and slag significantly reduced the water absorption (as low as 2.2%) of the sintered pellets and increase the compressive strength (as high as 23.1 MPa) of LWA, which were found to be controlled by open porosity and shrinkage. Excessive addition of glass (>10%) led to increase in internal pore sizes of the sintered pellets, and thus reduced the compressive strength. The alkali-silica reactivity (ASR) of the LWA was innocuous according to the ASTM C289 test. Sintering and glass addition improved the stability of heavy metal and environmental compatibility of the LWA. The recycling of waste sediment, slag, and glass for LWA production can provide an alternative for the disposal of dredge harbor sediment and has positive impact on waste reduction, which not only can reduce secondary contamination to the environment, but also can contribute to circular economy.

ACS Style

Yee Cheng Lim; Yu-Jen Shih; Kuang-Chung Tsai; Wein-Duo Yang; Chiu-Wen Chen; Cheng-Di Dong. Recycling dredged harbor sediment to construction materials by sintering with steel slag and waste glass: Characteristics, alkali-silica reactivity and metals stability. Journal of Environmental Management 2020, 270, 110869 .

AMA Style

Yee Cheng Lim, Yu-Jen Shih, Kuang-Chung Tsai, Wein-Duo Yang, Chiu-Wen Chen, Cheng-Di Dong. Recycling dredged harbor sediment to construction materials by sintering with steel slag and waste glass: Characteristics, alkali-silica reactivity and metals stability. Journal of Environmental Management. 2020; 270 ():110869.

Chicago/Turabian Style

Yee Cheng Lim; Yu-Jen Shih; Kuang-Chung Tsai; Wein-Duo Yang; Chiu-Wen Chen; Cheng-Di Dong. 2020. "Recycling dredged harbor sediment to construction materials by sintering with steel slag and waste glass: Characteristics, alkali-silica reactivity and metals stability." Journal of Environmental Management 270, no. : 110869.

Paper
Published: 27 August 2020 in RSC Advances
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The novel MoS2 QDs showed ultrafast degradation towards contaminants and were easy to recycle.

ACS Style

Linjer Chen; Shu-Ling Hsieh; Chia-Hung Kuo; Shuchen Hsieh; Wei-Hsiang Chen; Chiu-Wen Chen; Cheng-Di Dong. Novel MoS2 quantum dots as a highly efficient visible-light driven photocatalyst in water remediation. RSC Advances 2020, 10, 31794 -31799.

AMA Style

Linjer Chen, Shu-Ling Hsieh, Chia-Hung Kuo, Shuchen Hsieh, Wei-Hsiang Chen, Chiu-Wen Chen, Cheng-Di Dong. Novel MoS2 quantum dots as a highly efficient visible-light driven photocatalyst in water remediation. RSC Advances. 2020; 10 (53):31794-31799.

Chicago/Turabian Style

Linjer Chen; Shu-Ling Hsieh; Chia-Hung Kuo; Shuchen Hsieh; Wei-Hsiang Chen; Chiu-Wen Chen; Cheng-Di Dong. 2020. "Novel MoS2 quantum dots as a highly efficient visible-light driven photocatalyst in water remediation." RSC Advances 10, no. 53: 31794-31799.

Journal article
Published: 04 August 2020 in Journal of Alloys and Compounds
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The present investigation reports on research of pure molybdenum disulfide (MoS2) and MoS2 doped [email protected] nanohybrids with various concentration. The photocatalytic action of MoS2 doped [email protected] nanohybrids was established by photodegrading methylene red (MR), methylene orange (MO) and congo red (CR) under visible light irradiation. The efficient visible light driven photocatalytic action was owing to a larger specific surface area of MoS2, which enhanced the close interfacial contact between pollutants and photocatalysts. Thus, when employed as photocatalyst for organic pollutants photodegradation, the developed nanohybrid exhibits a degradation rate of 0.072 min−1, which is high increasing compared with that of pure CoO/meso-CN and MoS2 (0.014 min−1 and 0.032 min−1). In addition, the nanohybrids indicates excellent stability and remarkable organic dyes removal capability, which could provide as a potential photocatalyst for water remediation under visible light. The resultant MoS2 doped [email protected] nanohybrids exhibit excellent photocatalytic capacity for MR, MO and CR (average removal rate was 94% at pH values of 3) within 60 min. The following demonstrated that synthesized MoS2 doped 1 wt% [email protected] nanohybrids retained a great photocatalytic as compared to pure MoS2 and CoO/meso-CN photocatalysts for degradation of organic dyes. The cases were described using XRD, FESEM, FTIR, HRTEM, XPS, TGA, UV–vis, Raman and EPR spectroscopy analyses. Our results serve a pathway for the fabrication of a MoS2-based heterostructure nanohybrids which can be applied for environmental management and reusability regions.

ACS Style

Linjer Chen; Yuliv Chuang; Thanh Binh Nguyen; Jih-Hsing Chang; Su Shiung Lam; Chiu-Wen Chen; Cheng-Di Dong. Novel molybdenum disulfide heterostructure nanohybrids with enhanced visible-light-induced photocatalytic activity towards organic dyes. Journal of Alloys and Compounds 2020, 848, 156448 .

AMA Style

Linjer Chen, Yuliv Chuang, Thanh Binh Nguyen, Jih-Hsing Chang, Su Shiung Lam, Chiu-Wen Chen, Cheng-Di Dong. Novel molybdenum disulfide heterostructure nanohybrids with enhanced visible-light-induced photocatalytic activity towards organic dyes. Journal of Alloys and Compounds. 2020; 848 ():156448.

Chicago/Turabian Style

Linjer Chen; Yuliv Chuang; Thanh Binh Nguyen; Jih-Hsing Chang; Su Shiung Lam; Chiu-Wen Chen; Cheng-Di Dong. 2020. "Novel molybdenum disulfide heterostructure nanohybrids with enhanced visible-light-induced photocatalytic activity towards organic dyes." Journal of Alloys and Compounds 848, no. : 156448.

Journal article
Published: 23 July 2020 in Process Safety and Environmental Protection
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In this study, the preparation procedures for the polysulfone (PSf) substrate and polyamide (PA) selective layers were systematically investigated to determine their effects on the separation performance of thin-film composite (TFC) forward osmosis (FO) membranes in terms of the permeate flux (Jw) and reverse solute flux (Js). Furthermore, the PA active layer was modified by adding different proportions of an emerging material, graphene oxide (GO), to increase Jw and decrease Js. The experimental results indicated that special attention should be paid to the preparation of the PSf casting solution, which required thorough degassing, sealing, and humidity and temperature control. The optimum casting height was discovered to be 175 μm. For PA layer formation, the same amount of polymer solutions (resulting thickness of 78.5 μm) on the top surface of the PSf substrate (on the side facing the water during phase inversion) resulted in the highest FO performance. GO modification of the PA layer at the dosage of 0.0175 wt% considerably enhanced Jw to 14 L m−2 h−1 and reduced Js to 0.23 mol m−2 h−1. However, higher GO dosage (0.02 wt%) led to lower membrane performance due to aggregation of GO nanoparticles, as confirmed using scanning electron microscopy. Next, the prepared membranes were applied to dye rejection and sludge concentration for water recovery. The virgin and modified FO membranes both exhibited high rejection efficiency (≥ 96.0%) for dyes commonly used in the textile industry. The 0.0175%-GO-modified FO membrane exhibited a higher concentration factor (1.67) and greater water recovery (40.0%) than the virgin membrane (1.45 and 31.2%, respectively). Therefore, the application of FO for water recovery is economic and environmentally friendly in terms of saving the transportation cost of sludge disposal while recovering water for reuse in wastewater treatment plants.

ACS Style

Ching-Shih Lin; Kuo-Lun Tung; Yi-Li Lin; Cheng-Di Dong; Chiu-Wen Chen; Chung-Hsin Wu. Fabrication and modification of forward osmosis membranes by using graphene oxide for dye rejection and sludge concentration. Process Safety and Environmental Protection 2020, 144, 225 -235.

AMA Style

Ching-Shih Lin, Kuo-Lun Tung, Yi-Li Lin, Cheng-Di Dong, Chiu-Wen Chen, Chung-Hsin Wu. Fabrication and modification of forward osmosis membranes by using graphene oxide for dye rejection and sludge concentration. Process Safety and Environmental Protection. 2020; 144 ():225-235.

Chicago/Turabian Style

Ching-Shih Lin; Kuo-Lun Tung; Yi-Li Lin; Cheng-Di Dong; Chiu-Wen Chen; Chung-Hsin Wu. 2020. "Fabrication and modification of forward osmosis membranes by using graphene oxide for dye rejection and sludge concentration." Process Safety and Environmental Protection 144, no. : 225-235.

Journal article
Published: 27 June 2020 in Catalysts
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Developing simple and effective synthetic strategies regarding the formation of heterostructure photocatalytic semiconductors remains an intense challenge in research matters. Uniform heterostructure cobalt [email protected][email protected] ([email protected][email protected]) photocatalyst exhibits excellent photocatalytic redox performance for pollutant degradation under visible light. By adjusting the weight ratio of [email protected]–CN and MoS2, we fabricated a [email protected][email protected] heterostructure photocatalyst, and the established heterostructure between [email protected]–CN and MoS2 was indicated by various physicochemical and morphological characterizations. The photocatalytic response to the fabricated hybrid was determined by rodamine B (RhB), methylene blue (MB), and congo red (CR) degradation in aqueous solution under visible light, and the nanocomposites with a slight content consisting of [email protected]–CN achieved better catalysis than pure MoS2. This finding confirmed the propriety of this heterostructure as a valuable photocatalyst. The experimental results demonstrated that the apparent reaction rate constant of the 3 wt% [email protected]–CN modified MoS2 was about two times higher than that of pure MoS2. The present work serves as a new approach for designing highly efficient visible light-induced heterostructure-based photocatalysts for environmental applications in the future.

ACS Style

Linjer Chen; Thanh Binh Nguyen; Yi-Li Lin; Chung-Hsin Wu; Jih-Hsing Chang; Chiu-Wen Chen; Cheng-Di Dong. Enhanced Heterogeneous Photodegradation of Organic Pollutants by a Visible Light Harvesting [email protected][email protected]2 Nanocomposites. Catalysts 2020, 10, 722 .

AMA Style

Linjer Chen, Thanh Binh Nguyen, Yi-Li Lin, Chung-Hsin Wu, Jih-Hsing Chang, Chiu-Wen Chen, Cheng-Di Dong. Enhanced Heterogeneous Photodegradation of Organic Pollutants by a Visible Light Harvesting [email protected][email protected]2 Nanocomposites. Catalysts. 2020; 10 (7):722.

Chicago/Turabian Style

Linjer Chen; Thanh Binh Nguyen; Yi-Li Lin; Chung-Hsin Wu; Jih-Hsing Chang; Chiu-Wen Chen; Cheng-Di Dong. 2020. "Enhanced Heterogeneous Photodegradation of Organic Pollutants by a Visible Light Harvesting [email protected][email protected]2 Nanocomposites." Catalysts 10, no. 7: 722.

Articles
Published: 17 June 2020 in Journal of Environmental Science and Health, Part A
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This study proposed a method for analysis of 10 phthalate esters compounds from wastewater treatment plant sludges. The analytical efficiency of GC-MS for of target compounds was verified by a standard mixture of phthalate esters. The response factors related to the respective internal standards from a five-point calibration curve quantified the phthalate esters in individual compounds. Based on the literature compiled by environmental agencies, new generation phthalate compounds have been developed, such as di-iso-nonyl phthalate (DiNP), di-iso-decyl phthalate (DiDP), as alternative to conventional phthalates. The analytical results showed that the total PAEs concentration was in the range from 7.4 to 138.6 mg kg−1 dw in these seven analyzed sludge samples. More, di-iso-nonyl phthalate (DiNP), di-iso-decyl phthalate (DiDP) and bis(2-ethylhexyl) phthalate (DEHP) contributed to over 99% of PAEs in the sludge. The correlation between total PAEs concentration in household and sewage flow treated at seven WWTPs and concentrations of DEHP, DiNP and DiDP was significant.

ACS Style

Cheng-Di Dong; Ming-Huang Wang; Chih-Feng Chen; Yu-Jen Shih; Ken-Lin Chang; Shu-Hui Lee; Yi-Li Lin; Chung-Hsin Wu; Chiu-Wen Chen. Detecting phthalate esters in sludge particulates from wastewater treatment plants. Journal of Environmental Science and Health, Part A 2020, 55, 1233 -1240.

AMA Style

Cheng-Di Dong, Ming-Huang Wang, Chih-Feng Chen, Yu-Jen Shih, Ken-Lin Chang, Shu-Hui Lee, Yi-Li Lin, Chung-Hsin Wu, Chiu-Wen Chen. Detecting phthalate esters in sludge particulates from wastewater treatment plants. Journal of Environmental Science and Health, Part A. 2020; 55 (10):1233-1240.

Chicago/Turabian Style

Cheng-Di Dong; Ming-Huang Wang; Chih-Feng Chen; Yu-Jen Shih; Ken-Lin Chang; Shu-Hui Lee; Yi-Li Lin; Chung-Hsin Wu; Chiu-Wen Chen. 2020. "Detecting phthalate esters in sludge particulates from wastewater treatment plants." Journal of Environmental Science and Health, Part A 55, no. 10: 1233-1240.

Journal article
Published: 29 April 2020 in Chemosphere
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4-Nonylphenol (4-NP), a phenolic endocrine disruptor chemical (EDC), is known to have high toxicity to aquatic organisms and humans. The remediation of 4-NP-contaminated marine sediments was studied using red algae-based biochar (RAB) thermochemically synthesized from Agardhiella subulata with simple pyrolysis process under different temperatures of 300–900 °C in CO2 atmosphere. The RAB was characterized by XRD, Raman, FTIR spectroscopy, and zeta potential measurements. The calcium in RAB efficiently activated sodium percarbonate (SPC) to generate reactive radicals for the catalytic degradation of 4-NP at pH 9.0. The oxygen-containing functional groups reacted with H2O2, which increased the generation of reactive radicals under alkaline pH condition. Ca2+ ion was the active species responsible for 4-NP degradation. CaO/CaCO3 on RAB surface enhanced direct electron transfer, increased HO production, and 4-NP degradation in marine sediments. Langmuir‒Hinshelwood type kinetics well described the 4-NP degradation process. Remediation of contaminated sediments using RAB could be a sustainable approach toward closed-loop biomass cycling in the degradation of 4-NP contaminants.

ACS Style

Chang-Mao Hung; C.P. Huang; Shu-Ling Hsieh; Mei-Ling Tsai; Chiu-Wen Chen; Cheng-Di Dong. Biochar derived from red algae for efficient remediation of 4-nonylphenol from marine sediments. Chemosphere 2020, 254, 126916 .

AMA Style

Chang-Mao Hung, C.P. Huang, Shu-Ling Hsieh, Mei-Ling Tsai, Chiu-Wen Chen, Cheng-Di Dong. Biochar derived from red algae for efficient remediation of 4-nonylphenol from marine sediments. Chemosphere. 2020; 254 ():126916.

Chicago/Turabian Style

Chang-Mao Hung; C.P. Huang; Shu-Ling Hsieh; Mei-Ling Tsai; Chiu-Wen Chen; Cheng-Di Dong. 2020. "Biochar derived from red algae for efficient remediation of 4-nonylphenol from marine sediments." Chemosphere 254, no. : 126916.

Journal article
Published: 18 April 2020 in Chemosphere
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Contamination by microplastics (MPs) and the associated organic pollutants has caused potential threats to the ecological environment of global waters. In this study, MPs were sampled by trawling from the surface waters of the estuary, fishing port entrance and harbor entrance areas connected to the southwestern coast of Taiwan. Moreover, the abundance, morphological characteristics, composition, and associated polycyclic aromatic hydrocarbons (PAHs) of MPs were analyzed. The abundance of MPs was 0.36 ± 0.21 items/m3, which was 6.4 ± 10.7% of the abundance of zooplanktons. The average abundance of MPs was the highest in the estuary area, indicating that river transport was the primary way for MPs to enter the ocean. The most dominant MPs were small (0.33–2 mm; 78.8 ± 8.1%), colored (60.0 ± 12.8%), fragments (66.1 ± 10.6%), comprising PE (52.6 ± 7.6%), and PP (38.7 ± 9.4%). The decomposition of various plastic products and disposable plastic packaging may be the most significant source. The total concentration of PAHs in MPs ranged from 104 to 3595 ng/g dw, with an average of 818 ± 874 ng/g dw. The diagnostic ratios and the results of principal component analysis (PCA) and multiple linear regression of the absolute principal component scores (MLR-APCS) indicated that the PAHs were mainly contributed from sources related to petrogenic (71.4%) and vehicles (28.6%). Most likely due to MPs on the sea surface coming into contact with floating oil spills from ships or floating tar particles.

ACS Style

Chih-Feng Chen; Yun-Ru Ju; Yee Cheng Lim; Ning-Hsing Hsu; Kun-Tu Lu; Shu-Ling Hsieh; Cheng-Di Dong; Chiu-Wen Chen. Microplastics and their affiliated PAHs in the sea surface connected to the southwest coast of Taiwan. Chemosphere 2020, 254, 126818 .

AMA Style

Chih-Feng Chen, Yun-Ru Ju, Yee Cheng Lim, Ning-Hsing Hsu, Kun-Tu Lu, Shu-Ling Hsieh, Cheng-Di Dong, Chiu-Wen Chen. Microplastics and their affiliated PAHs in the sea surface connected to the southwest coast of Taiwan. Chemosphere. 2020; 254 ():126818.

Chicago/Turabian Style

Chih-Feng Chen; Yun-Ru Ju; Yee Cheng Lim; Ning-Hsing Hsu; Kun-Tu Lu; Shu-Ling Hsieh; Cheng-Di Dong; Chiu-Wen Chen. 2020. "Microplastics and their affiliated PAHs in the sea surface connected to the southwest coast of Taiwan." Chemosphere 254, no. : 126818.