This page has only limited features, please log in for full access.

Dr. C. P. Huang
Department of Civil and Environmental Engineering, University of Delaware, Newark, DE 19716, USA

Basic Info

Basic Info is private.

Research Keywords & Expertise

0 Environmental Nanotechnology
0 Aquatic Chemistry
0 Advanced oxidation
0 Electrochemical Processes
0 Interfacial processes

Fingerprints

Advanced oxidation
Environmental Nanotechnology
Electrochemical Processes

Honors and Awards

The user has no records in this section


Career Timeline

The user has no records in this section.


Short Biography

The user biography is not available.
Following
Followers
Co Authors
The list of users this user is following is empty.
Following: 0 users

Feed

Review
Published: 21 June 2021 in Sustainability
Reads 0
Downloads 0

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.

Review
Published: 18 May 2021 in Sustainability
Reads 0
Downloads 0

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: 23 March 2021 in Chemosphere
Reads 0
Downloads 0

Red mud (RM), an industrial waste of bauxite refinery, shows great potential in adsorptive phosphate immobilization but granulation of RM enables the ease for field application. Red-mud-based ceramsites with 12 compositions that blended Korean red mud, American red mud, ocher, and bentonite were synthesized through firing process (600∼1000 oC). The porosity, bulk density, mechanical strength, mineralogical composition, and phosphate adsorption capacity of granulated RM were characterized and analyzed. The crystallization of plagioclases, nepheline and gehlenite was observed in the ceramsites with high alkali flux content, which enhanced both porosity and phosphate adsorption capacity. The characteristics of the ceramsites without phase transition were highly correlated with porosity. The mechanical strength of ceramsites was governed by crack population, describable by the Weibull distribution model, and thus the maximal tensile stress correlated negatively with porosity. Results showed that 32 wt % of KRREM and USREM treated at 1000 and 900 oC, respectively, yielded the best performing ceramites in terms of mechanical strength and phosphate adsorption capacity. Ultimately, the phosphate adsorption capacity, as affected by initial phosphate concentration, contact time, and temperature, of the optimized ceramsites was studied.

ACS Style

Jui-Yen Lin; Dan Li; Minsoo Kim; Ingyu Lee; Hyunook Kim; Chin-Pao Huang. Process optimization for the synthesis of ceramsites in terms of mechanical strength and phosphate adsorption capacity. Chemosphere 2021, 278, 130239 .

AMA Style

Jui-Yen Lin, Dan Li, Minsoo Kim, Ingyu Lee, Hyunook Kim, Chin-Pao Huang. Process optimization for the synthesis of ceramsites in terms of mechanical strength and phosphate adsorption capacity. Chemosphere. 2021; 278 ():130239.

Chicago/Turabian Style

Jui-Yen Lin; Dan Li; Minsoo Kim; Ingyu Lee; Hyunook Kim; Chin-Pao Huang. 2021. "Process optimization for the synthesis of ceramsites in terms of mechanical strength and phosphate adsorption capacity." Chemosphere 278, no. : 130239.

Journal article
Published: 17 January 2021 in Journal of Water Process Engineering
Reads 0
Downloads 0

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: 30 November 2020 in Journal of Hazardous Materials
Reads 0
Downloads 0

Piranha solution is a highly acidic mixture of sulfuric acid and hydrogen peroxide. The present study aimed at developing a dimensionally stable anode (DSA), made of titanium metal foil coated with Ruthenium Dioxide (RuO2), for the electrochemical oxidation of hydrogen peroxide in the presence of strong sulfuric acid under ambient conditions. Results showed that hydrogen peroxide in the piranha solution was fully degraded in 5 h under a constant current of 2 A (or current density of 0.32 A-cm-2).The oxidation kinetics of hydrogen peroxide followed the Langmuir-Hinshelwood model. The observed rate constant was a function of applied current. The initial current efficiency was 17.5% at 0.5 A (or 0.08 A-cm-2) and slightly decreased to about 13.5% at applied current between 1.3 and 1.5 A (or current density of 0.208 and 0.24 A-cm-2). Results showed the capability and feasibility of the electrochemical oxidation process for the recovery of sulfuric acid from the spent piranha solution in semiconductor industrial installations or general laboratories.

ACS Style

Daniel Sanchez Carretero; Chih-Pin Huang; Jing-Hua Tzeng; Chin-Pao Huang. The recovery of sulfuric acid from spent piranha solution over a dimensionally stable anode (DSA) Ti-RuO2 electrode. Journal of Hazardous Materials 2020, 406, 124658 .

AMA Style

Daniel Sanchez Carretero, Chih-Pin Huang, Jing-Hua Tzeng, Chin-Pao Huang. The recovery of sulfuric acid from spent piranha solution over a dimensionally stable anode (DSA) Ti-RuO2 electrode. Journal of Hazardous Materials. 2020; 406 ():124658.

Chicago/Turabian Style

Daniel Sanchez Carretero; Chih-Pin Huang; Jing-Hua Tzeng; Chin-Pao Huang. 2020. "The recovery of sulfuric acid from spent piranha solution over a dimensionally stable anode (DSA) Ti-RuO2 electrode." Journal of Hazardous Materials 406, no. : 124658.

Journal article
Published: 24 September 2020 in Chemosphere
Reads 0
Downloads 0

Silver deposited titanate nanotube array composite (Ag/TNA-c) was successfully synthesized using tea leaves and ground coffee as reducing agent for the first time. The synthesis method was effective, eco-friendly, and reproducible in producing quality nano-composite. The Ag/TNA composite was characterized via XPS, SEM, UV-vis, XRD, and electrochemical analyses for chemical and physical properties. Additionally, chlorogenic acid, caffeine, and catechin were selected as reducing agents for purpose of comparison. Results indicated that catechin and chlorogenic acid were the main reducing agents responsible for Ag+ reduction in tea leaves and ground coffee, respectively. The synthesized Ag/TNA-c exhibited the best photocatalytic (PC) performance in terms of photo-current response, EIS, Ibuprofen degradation, and hydrogen generation in a PEC system. Pairing with a Pt cathode, the photoelectrochemical (PEC) system using the synthesized Ag/TNA composite photo-anode, was capable of concurrent anodic oxidation of Ibuprofen and cathodic generation of hydrogen. Deposition of nano-Ag particles on TNA enhanced the concurrent oxidation and reduction reaction in the PEC system. Results of ESR analysis confirmed the role of hydroxyl radical on Ibuprofen degradation over Ag/TNA-c in the PEC system. Mechanism of Ag/TNA PEC system was proposed to illustrate the oxidation and reduction reaction.

ACS Style

Yen-Ping Peng; Chih-Chen Liu; Ku-Fan Chen; Chin-Pao Huang; Chia-Hung Chen. Green synthesis of nano-silver–titanium nanotube array (Ag/TNA) composite for concurrent ibuprofen degradation and hydrogen generation. Chemosphere 2020, 264, 128407 .

AMA Style

Yen-Ping Peng, Chih-Chen Liu, Ku-Fan Chen, Chin-Pao Huang, Chia-Hung Chen. Green synthesis of nano-silver–titanium nanotube array (Ag/TNA) composite for concurrent ibuprofen degradation and hydrogen generation. Chemosphere. 2020; 264 ():128407.

Chicago/Turabian Style

Yen-Ping Peng; Chih-Chen Liu; Ku-Fan Chen; Chin-Pao Huang; Chia-Hung Chen. 2020. "Green synthesis of nano-silver–titanium nanotube array (Ag/TNA) composite for concurrent ibuprofen degradation and hydrogen generation." Chemosphere 264, no. : 128407.

Journal article
Published: 22 September 2020 in Applied Sciences
Reads 0
Downloads 0

The noise prediction using machine learning is a special study that has recently received increased attention. This is particularly true in workplaces with noise pollution, which increases noise exposure for general laborers. This study attempts to analyze the noise equivalent level (Leq) at the National Synchrotron Radiation Research Center (NSRRC) facility and establish a machine learning model for noise prediction. This study utilized the gradient boosting model (GBM) as the learning model in which past noise measurement records and many other features are integrated as the proposed model makes a prediction. This study analyzed the time duration and frequency of the collected Leq and also investigated the impact of training data selection. The results presented in this paper indicate that the proposed prediction model works well in almost noise sensors and frequencies. Moreover, the model performed especially well in sensor 8 (125 Hz), which was determined to be a serious noise zone in the past noise measurements. The results also show that the root-mean-square-error (RMSE) of the predicted harmful noise was less than 1 dBA and the coefficient of determination (R2) value was greater than 0.7. That is, the working field showed a favorable noise prediction performance using the proposed method. This positive result shows the ability of the proposed approach in noise prediction, thus providing a notification to the laborer to prevent long-term exposure. In addition, the proposed model accurately predicts noise future pollution, which is essential for laborers in high-noise environments. This would keep employees healthy in avoiding noise harmful positions to prevent people from working in that environment.

ACS Style

Po-Jiun Wen; Chihpin Huang. Noise Prediction Using Machine Learning with Measurements Analysis. Applied Sciences 2020, 10, 6619 .

AMA Style

Po-Jiun Wen, Chihpin Huang. Noise Prediction Using Machine Learning with Measurements Analysis. Applied Sciences. 2020; 10 (18):6619.

Chicago/Turabian Style

Po-Jiun Wen; Chihpin Huang. 2020. "Noise Prediction Using Machine Learning with Measurements Analysis." Applied Sciences 10, no. 18: 6619.

Journal article
Published: 01 September 2020 in Applied Catalysis A: General
Reads 0
Downloads 0

Bimetallic palladium (Pd) and tin (Sn) catalysts were electrochemically deposited on stainless steel mesh support by controlling the metal deposition sequence, total electrical charge, and metal composition. Results showed that the preparation procedure affected the crystal structure of bimetallic Pd-Sn catalysts, which significantly influenced nitrate removal efficiency and dinitrogen selectivity. Electrode with Sn on the outside surface exhibited relatively greater nitrate removal rate constant and nitrate conversion. The Sn to Pd molar ratio and the electrical charge applied during electrode preparation also affected the nitrate reduction performance. The SS/Sn0.2Pd0.8-497 electrode exhibited 88, 89, 79, and 9% of total nitrate removal, dinitrogen selectivity, dinitrogen yield, and NH4+ selectivity, respectively. Among the three major facets, (214), (131) and (420) of Sn3Pd alloy on the electrode surface, (420) exhibited the most critical effect on the dinitrogen yield. Crystal structure of catalysts controls the reactivity and selectivity of electrochemical reduction as exemplified by nitrate.

ACS Style

Jenn Fang Su; Wei-Fan Kuan; Ching-Lung Chen; Chin-Pao Huang. Enhancing electrochemical nitrate reduction toward dinitrogen selectivity on Sn-Pd bimetallic electrodes by surface structure design. Applied Catalysis A: General 2020, 606, 117809 .

AMA Style

Jenn Fang Su, Wei-Fan Kuan, Ching-Lung Chen, Chin-Pao Huang. Enhancing electrochemical nitrate reduction toward dinitrogen selectivity on Sn-Pd bimetallic electrodes by surface structure design. Applied Catalysis A: General. 2020; 606 ():117809.

Chicago/Turabian Style

Jenn Fang Su; Wei-Fan Kuan; Ching-Lung Chen; Chin-Pao Huang. 2020. "Enhancing electrochemical nitrate reduction toward dinitrogen selectivity on Sn-Pd bimetallic electrodes by surface structure design." Applied Catalysis A: General 606, no. : 117809.

Annual literature review
Published: 31 August 2020 in Water Environment Research
Reads 0
Downloads 0

A review of the literature published in 2019 on topics related to hazardous waste management in water, soils, sediments, and air. The review covered treatment technologies applying physical, chemical, and biological principles for the remediation of contaminated water, soils, sediments, and air.

ACS Style

Yu Han Yu; Jenn Fang Su; Yujen Shih; Jianmin Wang; Po Yen Wang; Chin Pao Huang. Hazardous wastes treatment technologies. Water Environment Research 2020, 92, 1833 -1860.

AMA Style

Yu Han Yu, Jenn Fang Su, Yujen Shih, Jianmin Wang, Po Yen Wang, Chin Pao Huang. Hazardous wastes treatment technologies. Water Environment Research. 2020; 92 (10):1833-1860.

Chicago/Turabian Style

Yu Han Yu; Jenn Fang Su; Yujen Shih; Jianmin Wang; Po Yen Wang; Chin Pao Huang. 2020. "Hazardous wastes treatment technologies." Water Environment Research 92, no. 10: 1833-1860.

Journal article
Published: 06 June 2020 in Journal of Environmental Chemical Engineering
Reads 0
Downloads 0

Fe-Cu bimetallic oxide, a Fenton-like catalyst, was synthesized by a facile co-precipitation method. The physicochemical characteristics of as-synthesized Fe-Cu bimetallic composites with different Cu mass loadings were characterized. The Fe-Cu-080 composite, having suitable amount of Cu, could effectively control the size of bimetallic particles, with uniform distribution in nano range, exhibited a higher activity and stability in methylene blue (MB) mineralization. Fe-Cu-080/H2O2 system could work in a wide range pH with high efficiency in MB removal and low metal leaching concentration. Electron paramagnetic resonance (EPR) and fluorescence (FL) results proved that the OH radicals generated in Fe-Cu composite/H2O2 system were involved in the degradation of methylene blue (MB). The Fe-Cu-080 catalyst could be easily separation from the aqueous solution by simple external magnetic field. Fe-Cu-080 was not cytotoxic and could greatly reduce the copper toxicity. The combination of Cu-Fe in bimetallic structure was proved to be an attractive alternative method to improve the efficiency of heterogeneous Fenton-like system exemplified by the removal of organic pollutants from wastewater.

ACS Style

Thanh Binh Nguyen; Cheng-Di Dong; C.P. Huang; Chiu-Wen Chen; Shu-Ling Hsieh; Shuchen Hsieh. Fe-Cu bimetallic catalyst for the degradation of hazardous organic chemicals exemplified by methylene blue in Fenton-like reaction. Journal of Environmental Chemical Engineering 2020, 8, 104139 .

AMA Style

Thanh Binh Nguyen, Cheng-Di Dong, C.P. Huang, Chiu-Wen Chen, Shu-Ling Hsieh, Shuchen Hsieh. Fe-Cu bimetallic catalyst for the degradation of hazardous organic chemicals exemplified by methylene blue in Fenton-like reaction. Journal of Environmental Chemical Engineering. 2020; 8 (5):104139.

Chicago/Turabian Style

Thanh Binh Nguyen; Cheng-Di Dong; C.P. Huang; Chiu-Wen Chen; Shu-Ling Hsieh; Shuchen Hsieh. 2020. "Fe-Cu bimetallic catalyst for the degradation of hazardous organic chemicals exemplified by methylene blue in Fenton-like reaction." Journal of Environmental Chemical Engineering 8, no. 5: 104139.

Journal article
Published: 05 May 2020 in Applied Catalysis B: Environmental
Reads 0
Downloads 0

Surfactants, namely, cetyltrimethylammonium chloride, polydiallyldimethylammonium chloride, and benzethonium chloride were used to control the crystal growth of metallic Cu nanoparticles supported on stainless steel mesh electrodes as to improve the selective electrochemical conversion of NO3− to non-toxic N2. Results showed that the Cu(200)/Cu(111) ratio controlled the selectivity of N2, NO2−, and NH4+. The Kd value increased from 10% to 30% when the Cu(200)/Cu(111) intensity ratio was decreased 60% to 30%, meaning increase Cu(111) increased N2 production. Furthermore, the presence of a second metal, namely, Pd increased the N2 selectivity. The best N2 yield (XN2 = 22%), occurring on monometallic Cu, synthesized with BZT at 1-time CMC was further increased to XN2 = 65% over bimetallic Pd0.27Cu0.73/SS. The selectivity of nitrite (SNO2-) and ammonium (SNH4+) on Cu/SS were 33.1 and 43.5%, respectively, which were decreased to 0.30 and 34.0%, respectively, on bimetallic Pd0.27Cu0.73/SS.

ACS Style

Yu-Jen Shih; Zhi-Lun Wu; Chun-Yen Lin; Yao-Hui Huang; Chin-Pao Huang. Manipulating the crystalline morphology and facet orientation of copper and copper-palladium nanocatalysts supported on stainless steel mesh with the aid of cationic surfactant to improve the electrochemical reduction of nitrate and N2 selectivity. Applied Catalysis B: Environmental 2020, 273, 119053 .

AMA Style

Yu-Jen Shih, Zhi-Lun Wu, Chun-Yen Lin, Yao-Hui Huang, Chin-Pao Huang. Manipulating the crystalline morphology and facet orientation of copper and copper-palladium nanocatalysts supported on stainless steel mesh with the aid of cationic surfactant to improve the electrochemical reduction of nitrate and N2 selectivity. Applied Catalysis B: Environmental. 2020; 273 ():119053.

Chicago/Turabian Style

Yu-Jen Shih; Zhi-Lun Wu; Chun-Yen Lin; Yao-Hui Huang; Chin-Pao Huang. 2020. "Manipulating the crystalline morphology and facet orientation of copper and copper-palladium nanocatalysts supported on stainless steel mesh with the aid of cationic surfactant to improve the electrochemical reduction of nitrate and N2 selectivity." Applied Catalysis B: Environmental 273, no. : 119053.

Journal article
Published: 23 January 2020 in Sustainable Environment Research
Reads 0
Downloads 0

In wastewater treatment, biological nitrogen removal is an important topic, and the optimal condition for it is a mesophilic environment. This study developed a thermophilic microbial fuel cells (thermo-MFCs) equipped with a hydrophobic membrane electrode to remove and recover ammonia and water from leachate. The results were compared with those of the mesophilic MFCs (meso-MFCs) and they show that the current and power densities for meso-MFCs are higher. The ammonia removal efficiencies of thermo-MFCs are 83% (closed circuit) and 60% (open circuit), higher than those of closed- and open-circuit meso-MFCs (48 and 38%, respectively). Water vapor, the main recovery water flux for the thermo-MFCs, provided 36.5 L m− 2 d− 1 using the closed-circuit mode without applied energy. Moreover, thermo-MFCs and meso-MFCs can be restored within 24 h even under inhibition by using 7200 mg L− 1 ammonia. The proposed process presents an economic and ecofriendly method to not only recover water and ammonia from leachate but also alleviate ammonia inhibition.

ACS Style

Kuo-Ti Chen; Min-Der Bai; Hui-Yun Yang; Yu-Ching Chen; Wen-Jang Lu; Chihpin Huang. Removal of ammonia from leachate by using thermophilic microbial fuel cells equipped with membrane electrode. Sustainable Environment Research 2020, 30, 1 -9.

AMA Style

Kuo-Ti Chen, Min-Der Bai, Hui-Yun Yang, Yu-Ching Chen, Wen-Jang Lu, Chihpin Huang. Removal of ammonia from leachate by using thermophilic microbial fuel cells equipped with membrane electrode. Sustainable Environment Research. 2020; 30 (1):1-9.

Chicago/Turabian Style

Kuo-Ti Chen; Min-Der Bai; Hui-Yun Yang; Yu-Ching Chen; Wen-Jang Lu; Chihpin Huang. 2020. "Removal of ammonia from leachate by using thermophilic microbial fuel cells equipped with membrane electrode." Sustainable Environment Research 30, no. 1: 1-9.

Journal article
Published: 08 January 2020 in Chemosphere
Reads 0
Downloads 0

This study investigated thermal treatment of red mud (RM) and its effect on phase composition, surface property, and sorption capacity exemplified by phosphate. Dehydration (∼600 °C), decomposition of carbonate minerals (700 °C–800 °C), and silicate/aluminate formation (900 °C–1000 °C) occurred upon thermal treatment of RM. Grain growth and vitrification that rendered initial morphology changes and decreased the specific surface area of RM from 26.5 to 4.1 m2/g when treated from 600 to 1000 °C, respectively. Surface acidity, i.e., intrinsic acidity constant and surface acidity density, decreased as well after thermal treatment at 600 °C due to burnouts of organics then increased upon further elevated-temperature treatment because of phase transformation. Thermal activation enhanced phosphate adsorption density (μmol/m2). Multilayer sorption aided by leached metal ions was responsible for phosphate immobilization.

ACS Style

Jui-Yen Lin; Minsoo Kim; Dan Li; Hyunook Kim; Chin-Pao Huang. The removal of phosphate by thermally treated red mud from water: The effect of surface chemistry on phosphate immobilization. Chemosphere 2020, 247, 125867 .

AMA Style

Jui-Yen Lin, Minsoo Kim, Dan Li, Hyunook Kim, Chin-Pao Huang. The removal of phosphate by thermally treated red mud from water: The effect of surface chemistry on phosphate immobilization. Chemosphere. 2020; 247 ():125867.

Chicago/Turabian Style

Jui-Yen Lin; Minsoo Kim; Dan Li; Hyunook Kim; Chin-Pao Huang. 2020. "The removal of phosphate by thermally treated red mud from water: The effect of surface chemistry on phosphate immobilization." Chemosphere 247, no. : 125867.

Journal article
Published: 14 November 2019 in Journal of Electroanalytical Chemistry
Reads 0
Downloads 0

Reliance of Fenton processes to hazardous chemicals diminishes the range of niche applications of this highly efficient advanced oxidation process due to risks associated to transport, storage, and handling of chemicals. In this work, an alternative approach towards independent Fenton systems integrating (1) per demand in situ production of H2O2 from oxygen cathodic reduction and (2) electrochemically-driven iron (II) dosing system is explored as a novel strategy. For this purpose, a dual-cell system was designed to fulfill individual current needs of both processes while avoiding excessive iron sludge production observed in peroxicoagulation treatments. Experimental results indicate high reproducibility and resilience of the proposed dual-cell electro-Fenton system, which attained complete organic methylene blue dye decolorization in 80 min of treatment and over 80% mineralization in only 120 min of electro-Fenton treatment. These results showcase a new approach that opens alternative pathways for possible implementation of low-physical footprint electro-Fenton systems as point-of-entry treatments or even to treat effluents of small and mid-sized industries.

ACS Style

James I. Colades; Chin-Pao Huang; Joseph D. Retumban; Sergi Garcia-Segura; Mark Daniel G. de Luna. Electrochemically-driven dosing of iron (II) for autonomous electro-Fenton processes with in situ generation of H2O2. Journal of Electroanalytical Chemistry 2019, 856, 113639 .

AMA Style

James I. Colades, Chin-Pao Huang, Joseph D. Retumban, Sergi Garcia-Segura, Mark Daniel G. de Luna. Electrochemically-driven dosing of iron (II) for autonomous electro-Fenton processes with in situ generation of H2O2. Journal of Electroanalytical Chemistry. 2019; 856 ():113639.

Chicago/Turabian Style

James I. Colades; Chin-Pao Huang; Joseph D. Retumban; Sergi Garcia-Segura; Mark Daniel G. de Luna. 2019. "Electrochemically-driven dosing of iron (II) for autonomous electro-Fenton processes with in situ generation of H2O2." Journal of Electroanalytical Chemistry 856, no. : 113639.

Journal article
Published: 09 November 2019 in Water Research
Reads 0
Downloads 0

Increased frequency and severity of extreme weather events (i.e., floods and droughts) combined with higher temperatures can threaten surface water quality and downstream drinking water production. This study characterized the effects of extreme weather events on dissolved organic matter (DOM) washout from watershed soils and the corresponding contribution to disinfection by-product (DBP) precursors under simulated weather conditions. A laboratory simulation was performed to assess the effects of temperature, drought, rainfall intensity, sea level rise, and acid deposition on the amount of DOM released from soil samples. DBP formation potentials (DBPFPs) were obtained to assess the effect of extreme weather events on DBP formation and drinking water quality. The results demonstrated that the dissolved organic carbon (DOC) and carbonaceous DBP levels increased with increasing temperature in a dry (drought) scenario. Regardless of the watershed from which a soil sample was obtained and the incubation temperature during rewetting or chlorination processes, the DOC and carbonaceous DBP levels also increased with increasing temperature. Brominated DBP formation was increased when bromide was present during the rewetting of soil, indicating the effect of sea level rise. When bromide was present during the chlorination of water for DBPFP tests, only the level of brominated DBPs increased. Acid deposition had various effects under different weather conditions. The results of heavy rainfall simulations suggested that water quality deteriorates at the beginning of an extreme rainfall event. Abundant DOM was washed out of soil, leading to a peak in the DBPFP level. The level of DOM in seepage water was less than that of the surface runoff water during rainfall. The situation was more severe when the rainfall came after a long drought and the drought–rewetting cycle effect occurred.

ACS Style

Chia-Jung Chang; Chin-Pao Huang; Chia-Yang Chen; Gen-Shuh Wang. Assessing the potential effect of extreme weather on water quality and disinfection by-product formation using laboratory simulation. Water Research 2019, 170, 115296 .

AMA Style

Chia-Jung Chang, Chin-Pao Huang, Chia-Yang Chen, Gen-Shuh Wang. Assessing the potential effect of extreme weather on water quality and disinfection by-product formation using laboratory simulation. Water Research. 2019; 170 ():115296.

Chicago/Turabian Style

Chia-Jung Chang; Chin-Pao Huang; Chia-Yang Chen; Gen-Shuh Wang. 2019. "Assessing the potential effect of extreme weather on water quality and disinfection by-product formation using laboratory simulation." Water Research 170, no. : 115296.

Journal article
Published: 06 November 2019 in Journal of Colloid and Interface Science
Reads 0
Downloads 0

Activated alumina (AA) has been extensively applied in the defluorination of industrial wastewaters and groundwater. Although the dissolution of AA due to formation of fluoroaluminate complexes (AlFx3−x), especially in acidic condition, has been observed, its role on fluoride uptake by alumina has not been discussed in any previous literature, most of which consider F− as the sole adsorbed species. The present study described the effect of fluoroaluminate complexes on fluoride adsorption onto alumina. Results indicated that fluoroaluminate complexes, major fluoride species at pH < 6, were responsible for total fluoride adsorbed. Free fluoride ions were adsorbed mainly in the alkaline pH region, e.g., pH > 6. The dissolution of AA during defluorination was measured and analyzed by the thermodynamic solubility model. The surface concentration of F− and AlFx3−x were calculated considering electrostatic interactions. Characterization of fluoride-laden AA by XPS revealed that the fraction of surface Al-F species decreased with pH, which suggested the transition of the surface fluorinated species to that of free fluoride ions. The stability constants of four surface complexes, namely, AlOH-FAl2+, AlOH-F2Al+, AlOH2+-F− and AlOH-F−, were 106.88, 105.36, 102.72 and 102.36, respectively. Obviously fluoroaluminate complexes exhibited stronger chemical bonds with the surface hydroxy species than free fluoride.

ACS Style

Jui-Yen Lin; Yung-Long Chen; Xin-Ya Hong; C. P. Huang. The role of fluoroaluminate complexes on the adsorption of fluoride onto hydrous alumina in aqueous solutions. Journal of Colloid and Interface Science 2019, 561, 275 -286.

AMA Style

Jui-Yen Lin, Yung-Long Chen, Xin-Ya Hong, C. P. Huang. The role of fluoroaluminate complexes on the adsorption of fluoride onto hydrous alumina in aqueous solutions. Journal of Colloid and Interface Science. 2019; 561 ():275-286.

Chicago/Turabian Style

Jui-Yen Lin; Yung-Long Chen; Xin-Ya Hong; C. P. Huang. 2019. "The role of fluoroaluminate complexes on the adsorption of fluoride onto hydrous alumina in aqueous solutions." Journal of Colloid and Interface Science 561, no. : 275-286.

Journal article
Published: 05 November 2019 in Chemical Engineering Journal
Reads 0
Downloads 0

Ag-decorated phosphorus doped graphitic carbon nitride ([email protected]) nanocomposite was successfully synthesized. Ag nanoparticles (average size = 15 nm) were well-crystalline and uniformly dispersed on the P doped g-C3N4 ([email protected]) surface. Nano-Ag particles enhanced light absorption and acted as electron sink to capture photogenerated electrons, and promoted the separation of photo-induced charge. Results showed greater than 99% of sulfamethoxazole (SMX) removal within 30 min under visible light irradiation. The photodegradation rate of SMX over [email protected] was ~4 and 7 times faster than that on pristine g-C3N4 (UCN) and [email protected], respectively. [email protected] was stable and could be reused for at least 6 cycles without losing photocatalytic activity. Reactive oxygen species played a significant role in the photodegradation of SMX. Overall, a new scheme to synthesize heterojunction photocatalysts, exemplified by Ag-based nanomaterials, for the heterogeneous photodegradation of organic contaminants under visible light was attained.

ACS Style

Thanh-Binh Nguyen; C.P. Huang; Ruey-An Doong; Chiu-Wen Chen; Cheng-Di Dong. Visible-light photodegradation of sulfamethoxazole (SMX) over Ag-P-codoped g-C3N4 ([email protected]) photocatalyst in water. Chemical Engineering Journal 2019, 384, 123383 .

AMA Style

Thanh-Binh Nguyen, C.P. Huang, Ruey-An Doong, Chiu-Wen Chen, Cheng-Di Dong. Visible-light photodegradation of sulfamethoxazole (SMX) over Ag-P-codoped g-C3N4 ([email protected]) photocatalyst in water. Chemical Engineering Journal. 2019; 384 ():123383.

Chicago/Turabian Style

Thanh-Binh Nguyen; C.P. Huang; Ruey-An Doong; Chiu-Wen Chen; Cheng-Di Dong. 2019. "Visible-light photodegradation of sulfamethoxazole (SMX) over Ag-P-codoped g-C3N4 ([email protected]) photocatalyst in water." Chemical Engineering Journal 384, no. : 123383.

Journal article
Published: 01 November 2019 in Bioresource Technology
Reads 0
Downloads 0

Cobalt-impregnated spent coffee ground biochar (Co-SCG) was synthesized and applied for tetracycline (TC) removal from water. The results showed that Co-SCG biochar exhibited marked adsorption capacity and catalyst activity. The maximum adsorption capacity of Co-SCG biochar toward TC was 370.37 mg g-1. TC was almost completely degraded in 25 min with a rate constant of 17.78 × 10-2 min-1 under the following optimal condition: TC concentration of 0.2 mM, PMS concentration of 0.6 mM, Co-SCG dosage of 100 mg L-1, and pH of 7.0. Co-SCG was characterized for surface properties by SEM, TEM, HRTEM, and BET. The concentration of 16 PAHs in Co-SCG biochar was studied also. Results demonstrated that Co-SCG was an effective eco-friendly material for the removal of tetracycline from water.

ACS Style

Van-Truc Nguyen; Thanh-Binh Nguyen; Chiu-Wen Chen; Chang-Mao Hung; C.P. Huang; Cheng-Di Dong. Cobalt-impregnated biochar (Co-SCG) for heterogeneous activation of peroxymonosulfate for removal of tetracycline in water. Bioresource Technology 2019, 292, 121954 .

AMA Style

Van-Truc Nguyen, Thanh-Binh Nguyen, Chiu-Wen Chen, Chang-Mao Hung, C.P. Huang, Cheng-Di Dong. Cobalt-impregnated biochar (Co-SCG) for heterogeneous activation of peroxymonosulfate for removal of tetracycline in water. Bioresource Technology. 2019; 292 ():121954.

Chicago/Turabian Style

Van-Truc Nguyen; Thanh-Binh Nguyen; Chiu-Wen Chen; Chang-Mao Hung; C.P. Huang; Cheng-Di Dong. 2019. "Cobalt-impregnated biochar (Co-SCG) for heterogeneous activation of peroxymonosulfate for removal of tetracycline in water." Bioresource Technology 292, no. : 121954.

Journal article
Published: 01 November 2019 in Journal of Hazardous Materials
Reads 0
Downloads 0

Manganese dioxide incorporated activated carbon (MnO2/AC) was synthesized and used to electrochemically degrade oxalic acid in aqueous solutions. The highly porous carbon provided reactive sites for the electro-sorption of oxalic acid and MnO2, with a specific polymorphism efficiently mediating the electron transfer between the electrode and organic pollutants. The activated carbon, made from the pyrolysis of dry loofah sponge using ZnCl2 as activating agent, exhibited a high double-layer capacitance dependent upon the heating temperature (100 F/g at 800 °C). The γ-MnO2 was in-situ deposited over the microporous structure of activated carbon through the redox reaction between KMnO4 and carbon. Simple further calcination converted γ-MnO2 to α-MnO2 nano-whisker at temperatures above 500 °C. Cyclic voltammetry showed that oxalic acid significantly improved the anodic current of the Mn(III)/Mn(IV) redox couple on the MnO2/AC electrode at an electrode potential around + 0.6 V (vs. Ag/AgCl). About 95% of oxalic acid degradation was achieved at pH < 4; meanwhile, 80% of the mineralization (total organic carbon removal) was attained independent of pH. Calcination converted γ-MnO2 to α-MnO2 which had higher electrochemical stability and inhibited the dissolution of Mn(II) from the electrode.

ACS Style

Yu-Jen Shih; Chin-Pao Huang; Ya-Han Chan; Yao-Hui Huang. Electrochemical degradation of oxalic acid over highly reactive nano-textured γ- and α-MnO2/carbon electrode fabricated by KMnO4 reduction on loofah sponge-derived active carbon. Journal of Hazardous Materials 2019, 379, 120759 .

AMA Style

Yu-Jen Shih, Chin-Pao Huang, Ya-Han Chan, Yao-Hui Huang. Electrochemical degradation of oxalic acid over highly reactive nano-textured γ- and α-MnO2/carbon electrode fabricated by KMnO4 reduction on loofah sponge-derived active carbon. Journal of Hazardous Materials. 2019; 379 ():120759.

Chicago/Turabian Style

Yu-Jen Shih; Chin-Pao Huang; Ya-Han Chan; Yao-Hui Huang. 2019. "Electrochemical degradation of oxalic acid over highly reactive nano-textured γ- and α-MnO2/carbon electrode fabricated by KMnO4 reduction on loofah sponge-derived active carbon." Journal of Hazardous Materials 379, no. : 120759.

Journal article
Published: 01 November 2019 in Science of The Total Environment
Reads 0
Downloads 0

Commercial activated carbon was treated with six quaternary ammonium salts (Quats), namely, hexyltrimethylammonium (HTMA), octyltrimethylammonium (OTMA), decyltrimethylammonium (DCTMA), dodecyltrimethylammonium (DDTMA), Tetradecyltrimethylammonium (TDTMA), and hexadecyltrimethylammoium (HDTMA) as to enhance the fluoride adsorption capacity. In batch mode experiments, fluoride adsorption onto the Quats-treated activated carbon decreased dramatically with increase in solution pH. Fluoride removal by the Quats-treated activated carbons was closely related to the Quats chain length at less-than critical micelle concentration (CMC). Multi-site adsorption isotherm described fluoride adsorption characteristics well. Results showed that activated carbon treated with DDTMA exhibited the best fluoride adsorption density among all Quats investigated. DDTMA-treated activated carbons exhibited two-fold increase in the fluoride adsorption capacity compared to the untreated activated carbon. Results of regeneration, by alkaline desorption and/or Quats re-loading, showed fluoride-laden activated carbons have high reusability. DDTMA increased the positive surface charge of the activated carbon that enhanced fluoride adsorption. DDTMA-treated activated carbon was promising for fluoride removal from water with much enhanced removal capacity.

ACS Style

Ching-Lung Chen; Sang-Won Park; Jenn Feng Su; Yu-Han Yu; Jae-Eun Heo; Kyung-Duk Kim; C.P. Huang. The adsorption characteristics of fluoride on commercial activated carbon treated with quaternary ammonium salts (Quats). Science of The Total Environment 2019, 693, 133605 .

AMA Style

Ching-Lung Chen, Sang-Won Park, Jenn Feng Su, Yu-Han Yu, Jae-Eun Heo, Kyung-Duk Kim, C.P. Huang. The adsorption characteristics of fluoride on commercial activated carbon treated with quaternary ammonium salts (Quats). Science of The Total Environment. 2019; 693 ():133605.

Chicago/Turabian Style

Ching-Lung Chen; Sang-Won Park; Jenn Feng Su; Yu-Han Yu; Jae-Eun Heo; Kyung-Duk Kim; C.P. Huang. 2019. "The adsorption characteristics of fluoride on commercial activated carbon treated with quaternary ammonium salts (Quats)." Science of The Total Environment 693, no. : 133605.