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Yung-Pin Tsai
Department of Health and Applied Sciences, Dong Nai Technology University, Bien Hoa 810000, Dong Nai, Vietnam

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Journal article
Published: 21 August 2021 in Water
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This study explores the effects of initial Cr(VI) concentration, wavelength, hole-scavenger (absence and presence of salicylic acid), and oxygen conditions (aeration by air, nitrogen gas, and mechanical stir only) on photocatalytic reduction of hexavalent chromium over titanium dioxide photocatalyst and the chromic species distribution after photocatalysis. The experimental results show the existence of strong interactions between these factors. The factor of hole-scavenger was more important than the UV light wavelength condition for a reduction of 3 mg Cr(VI) L−1, whereas both factors became important when Cr(VI) concentration increased to 20 mgL−1. The higher the UV wavelength was, the less the amount of chromium retained on the TiO2 surface. The influence of oxygen-containing conditions in the solution on the reduction of 3 mgL−1 Cr(VI) was unobvious, whereas its influence became remarkable for the reduction of 20 mgL−1 Cr(VI) in the presence of SA. The interaction between oxygen-containing factor and other environmental factors, such as Cr(VI) concentration and scavenger presence (SA in this study), is a key factor about the degree of oxygen effect on Cr(VI) photo-reduction and the chromic species distribution. Simple stirring obtained better photocatalytic efficiency than aeration by air or nitrogen gas.

ACS Style

Chih-Chi Yang; Khanh-Chau Dao; Yo-Sheng Lin; Teng-Yun Cheng; Ku-Fan Chen; Yung-Pin Tsai. Impacts of Mixing Mode on Photocatalytic Reduction of Hexavalent Chromium over Titanium Dioxide Nanomaterial under Various Environmental Conditions. Water 2021, 13, 2291 .

AMA Style

Chih-Chi Yang, Khanh-Chau Dao, Yo-Sheng Lin, Teng-Yun Cheng, Ku-Fan Chen, Yung-Pin Tsai. Impacts of Mixing Mode on Photocatalytic Reduction of Hexavalent Chromium over Titanium Dioxide Nanomaterial under Various Environmental Conditions. Water. 2021; 13 (16):2291.

Chicago/Turabian Style

Chih-Chi Yang; Khanh-Chau Dao; Yo-Sheng Lin; Teng-Yun Cheng; Ku-Fan Chen; Yung-Pin Tsai. 2021. "Impacts of Mixing Mode on Photocatalytic Reduction of Hexavalent Chromium over Titanium Dioxide Nanomaterial under Various Environmental Conditions." Water 13, no. 16: 2291.

Journal article
Published: 08 June 2021 in Water
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Adsorbent made by carbonization of biomass under oxygen-limited conditions has become a promising material for wastewater treatment owing to its cost-effective, simple, and eco-friendly processing method. Ultrasound is considered a green technique to modify carbon materials because it uses water as the solvent. In this study, a comparison of Reactive Black 5 (RB5) adsorption capacity between biochar (BC) generated by pyrolysis of water bamboo (Zizania latifolia) husks at 600 °C and ultrasound-assisted biochar (UBC) produced by pyrolysis at 600 °C assisted by ultrasonic irradiation was performed. UBC showed a greater reaction rate and reached about 80% removal efficiency after 4 h, while it took 24 h for BC to reach that level. Scanning electron microscope (SEM) images indicated that the UBC morphology surface was more porous, with the structure of the combination of denser mesopores enhancing physiochemical properties of UBC. By Brunauer, Emmett, and Teller (BET), the specific surface areas of adsorbent materials were analyzed, and the surface areas of BC and UBC were 56.296 m2/g and 141.213 m2/g, respectively. Moreover, the pore volume of UBC was 0.039 cm3/g, which was higher than that of BC at 0.013 cm3/g. The adsorption isotherms and kinetics revealed the better fits of reactions to Langmuir isotherm and pseudo-second-order kinetic model, indicating the inclination towards monolayer adsorption and chemisorption of RB5 on water bamboo husk-based UBC.

ACS Style

Thanh Nguyen; Hung-Hsiang Chen; Thi To; Yu-Chen Chang; Cheng-Kuo Tsai; Ku-Fan Chen; Yung-Pin Tsai. Development of Biochars Derived from Water Bamboo (Zizania latifolia) Shoot Husks Using Pyrolysis and Ultrasound-Assisted Pyrolysis for the Treatment of Reactive Black 5 (RB5) in Wastewater. Water 2021, 13, 1615 .

AMA Style

Thanh Nguyen, Hung-Hsiang Chen, Thi To, Yu-Chen Chang, Cheng-Kuo Tsai, Ku-Fan Chen, Yung-Pin Tsai. Development of Biochars Derived from Water Bamboo (Zizania latifolia) Shoot Husks Using Pyrolysis and Ultrasound-Assisted Pyrolysis for the Treatment of Reactive Black 5 (RB5) in Wastewater. Water. 2021; 13 (12):1615.

Chicago/Turabian Style

Thanh Nguyen; Hung-Hsiang Chen; Thi To; Yu-Chen Chang; Cheng-Kuo Tsai; Ku-Fan Chen; Yung-Pin Tsai. 2021. "Development of Biochars Derived from Water Bamboo (Zizania latifolia) Shoot Husks Using Pyrolysis and Ultrasound-Assisted Pyrolysis for the Treatment of Reactive Black 5 (RB5) in Wastewater." Water 13, no. 12: 1615.

Journal article
Published: 23 April 2020 in Water
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This study used high and low concentrations of glucose and acetic acid as carbon sources in two aerobic-anoxic-oxic (A2O) processes. Trials were shock loaded with different concentrations of Cd2+. It was observed that the substrate utilization rate decreased when glucose concentration increased and thus the activated sludge of A2O preferred acetic acid as a carbon source over glucose. Under anaerobic conditions, activated sludge readily transformed the substrate into poly-b-hydroxybutyrate (PHB) by the Entner–Douderoff (ED) pathway with ease, but not into poly-b-hydroxyvalerate (PHV) by the Embden–Meyerhof–Parnas (EMP) pathway. However, ED pathway was suppressed more severely by cadmium shock loading than that of the EMP pathway. The shock loading of Cd2+ greatly inhibited the anaerobic phosphate release rate with a half inhibition concentration of 10 mg L−1 when acetic acid was used as a substrate. The phosphate removal efficiency of A2O with acetic acid was affected by Cd2+ shock loading more than that of glucose. Therefore, A2O with glucose as a substrate could tolerate the Cd2+ shock loading better than that of A2O with acetic acid. This study also showed that polyphosphate accumulating organisms (PAOs) were more sensitive to Cd2+ toxicity than that of glycogen accumulating organisms (GAOs). With the addition of Cd2+, PHB/PHV synthesis/degradation was inhibited more apparently in acetic acid trials than that of glucose trials.

ACS Style

Chih-Chi Yang; Meng-Shan Lu; Khanh Chau Dao; Jan-Wei Lin; Yi-Hsiu Chou; Yung-Pin Tsai. Comparison of the Influences of Cadmium Toxicity to Phosphate Removal in Activated Sludge Separately Fed by Glucose and Acetic Acid as Carbon Sources. Water 2020, 12, 1205 .

AMA Style

Chih-Chi Yang, Meng-Shan Lu, Khanh Chau Dao, Jan-Wei Lin, Yi-Hsiu Chou, Yung-Pin Tsai. Comparison of the Influences of Cadmium Toxicity to Phosphate Removal in Activated Sludge Separately Fed by Glucose and Acetic Acid as Carbon Sources. Water. 2020; 12 (4):1205.

Chicago/Turabian Style

Chih-Chi Yang; Meng-Shan Lu; Khanh Chau Dao; Jan-Wei Lin; Yi-Hsiu Chou; Yung-Pin Tsai. 2020. "Comparison of the Influences of Cadmium Toxicity to Phosphate Removal in Activated Sludge Separately Fed by Glucose and Acetic Acid as Carbon Sources." Water 12, no. 4: 1205.

Review
Published: 07 April 2020 in Water
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Due to various potential toxicological threats to living organisms even at low concentrations, pharmaceuticals and personal care products in natural water are seen as an emerging environmental issue. The low efficiency of removal of pharmaceuticals and personal care products by conventional wastewater treatment plants calls for more efficient technology. Research on advanced oxidation processes has recently become a hot topic as it has been shown that these technologies can effectively oxidize most organic contaminants to inorganic carbon through mineralization. Among the advanced oxidation processes, the electrochemical advanced oxidation processes and, in general, electrochemical oxidation or anodic oxidation have shown good prospects at the lab-scale for the elimination of contamination caused by the presence of residual pharmaceuticals and personal care products in aqueous systems. This paper reviewed the effectiveness of electrochemical oxidation in removing pharmaceuticals and personal care products from liquid solutions, alone or in combination with other treatment processes, in the last 10 years. Reactor designs and configurations, electrode materials, operational factors (initial concentration, supporting electrolytes, current density, temperature, pH, stirring rate, electrode spacing, and fluid velocity) were also investigated.

ACS Style

Khanh Chau Dao; Chih-Chi Yang; Ku-Fan Chen; Yung-Pin Tsai. Recent Trends in Removal Pharmaceuticals and Personal Care Products by Electrochemical Oxidation and Combined Systems. Water 2020, 12, 1043 .

AMA Style

Khanh Chau Dao, Chih-Chi Yang, Ku-Fan Chen, Yung-Pin Tsai. Recent Trends in Removal Pharmaceuticals and Personal Care Products by Electrochemical Oxidation and Combined Systems. Water. 2020; 12 (4):1043.

Chicago/Turabian Style

Khanh Chau Dao; Chih-Chi Yang; Ku-Fan Chen; Yung-Pin Tsai. 2020. "Recent Trends in Removal Pharmaceuticals and Personal Care Products by Electrochemical Oxidation and Combined Systems." Water 12, no. 4: 1043.

Journal article
Published: 16 February 2020 in Applied Sciences
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We investigated a light emitting diode (LED) lighting system applied to a water bamboo field during winter season at night, and the results indicated that this lighting system can prevent the stunting of water bamboo leaves and further assist its growth. Compared with previous LED systems, in which the LED bulbs were placed directly above water bamboo leaves, our LED lighting system presents the benefit of easy handling during harvest. To prevent the inhomogeneous coverage of LED light patterns, a new design of LED lenses was also incorporated.

ACS Style

Vincent K. S. Hsiao; Teng-Yun Cheng; Chih-Feng Chen; Hao Shiu; Yong-Jin Yu; Chun-Fu Tsai; Pin-Chen Lai; Min-Chia Tsai; Chih-Chi Yang; Hung-Yu Chien; Ku-Fan Chen; Yung-Pin Tsai. Optimized LED-Integrated Agricultural Facilities for Adjusting the Growth of Water Bamboo (Zizania latifolia). Applied Sciences 2020, 10, 1330 .

AMA Style

Vincent K. S. Hsiao, Teng-Yun Cheng, Chih-Feng Chen, Hao Shiu, Yong-Jin Yu, Chun-Fu Tsai, Pin-Chen Lai, Min-Chia Tsai, Chih-Chi Yang, Hung-Yu Chien, Ku-Fan Chen, Yung-Pin Tsai. Optimized LED-Integrated Agricultural Facilities for Adjusting the Growth of Water Bamboo (Zizania latifolia). Applied Sciences. 2020; 10 (4):1330.

Chicago/Turabian Style

Vincent K. S. Hsiao; Teng-Yun Cheng; Chih-Feng Chen; Hao Shiu; Yong-Jin Yu; Chun-Fu Tsai; Pin-Chen Lai; Min-Chia Tsai; Chih-Chi Yang; Hung-Yu Chien; Ku-Fan Chen; Yung-Pin Tsai. 2020. "Optimized LED-Integrated Agricultural Facilities for Adjusting the Growth of Water Bamboo (Zizania latifolia)." Applied Sciences 10, no. 4: 1330.

Journal article
Published: 17 March 2019 in Applied Sciences
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The purpose of this study was to study how temperature variation affects the tolerance of phosphorus accumulating organisms (PAOs) in a toxic environment. To exclude the interference of glycogen accumulating organisms (GAOs), shock loading experiments were conducted to study the effect of Cu(II) toxicity on the metabolisms of PAOs in 10, 20, and 30 °C conditions. The experimental data showed that the temperature effects on aerobic phosphorus uptake, PHA degradation, and glycogen synthesis were remarkable in the presence of Cu(II). Nevertheless, insignificant effects on anaerobic phosphorus release and PHA synthesis were found. The largest inhibition of PAO metabolism occurred in the low temperature case (10 °C). This study also experimentally demonstrated the loss of PAO metabolic ability in the subsequent aerobic stage, after the anaerobic stage. The presence of Cu(II) toxicity mainly resulted from the inhibition of biochemical reactions in the aerobic stage, and it was irrelevant to the inhibition of previous anaerobic metabolisms.

ACS Style

Chen-Chiang Chou; Chih-Chi Yang; Meng-Shan Lu; Li-Yuan Hu; Ku-Fan Chen; Yung-Pin Tsai. The Influence of Temperature on Metabolisms of Phosphorus Accumulating Organisms in Biological Wastewater Treatment Plants in the Presence of Cu(II) Toxicity. Applied Sciences 2019, 9, 1126 .

AMA Style

Chen-Chiang Chou, Chih-Chi Yang, Meng-Shan Lu, Li-Yuan Hu, Ku-Fan Chen, Yung-Pin Tsai. The Influence of Temperature on Metabolisms of Phosphorus Accumulating Organisms in Biological Wastewater Treatment Plants in the Presence of Cu(II) Toxicity. Applied Sciences. 2019; 9 (6):1126.

Chicago/Turabian Style

Chen-Chiang Chou; Chih-Chi Yang; Meng-Shan Lu; Li-Yuan Hu; Ku-Fan Chen; Yung-Pin Tsai. 2019. "The Influence of Temperature on Metabolisms of Phosphorus Accumulating Organisms in Biological Wastewater Treatment Plants in the Presence of Cu(II) Toxicity." Applied Sciences 9, no. 6: 1126.

Journal article
Published: 14 October 2018 in Applied Sciences
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This study examines the effects of noise reflected from the overpass bottom under various conditions using onsite measurements and model simulation. Reflected noise from the overpass bottom may be as high as 8 dB(A). Bottom materials (steel and reinforced concrete (RC)) have no discernible effect on the reflected noise level. As the height of an overpass increases, the level of reflected noise decreases. When an overpass is parallel to the noise source (i.e., the freeway), the size of the area impacted by reflected noise increases. As the sound absorption rating of the material installed at the overpass bottom increased, the level of reflected noise decreased. A sound absorbing material with a sound absorption rate of at least 0.60 is recommended to reduce reflected noise level. When the distance between the overpass side and a receiver exceeded 30 m, the level of reflected noise level reduced significantly. Therefore, if the distance between a residential area and overpass could be increased to create a buffer zone coupled with the installation of sound absorbing material at the overpass bottom, the impact of reflected noise on nearby residents can be reduced.

ACS Style

Chi-Chwen Lin; Yen-Ping Peng; Yung-Pin Tsai; Yu-Chen Chang; Ku-Fan Chen. Impact and Control of Reflected Noise from an Overpass Bottom. Applied Sciences 2018, 8, 1908 .

AMA Style

Chi-Chwen Lin, Yen-Ping Peng, Yung-Pin Tsai, Yu-Chen Chang, Ku-Fan Chen. Impact and Control of Reflected Noise from an Overpass Bottom. Applied Sciences. 2018; 8 (10):1908.

Chicago/Turabian Style

Chi-Chwen Lin; Yen-Ping Peng; Yung-Pin Tsai; Yu-Chen Chang; Ku-Fan Chen. 2018. "Impact and Control of Reflected Noise from an Overpass Bottom." Applied Sciences 8, no. 10: 1908.

Journal article
Published: 09 October 2018 in Journal of Environmental Engineering and Landscape Management
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Biological wastewater treatment plants produce great amounts of sludge daily. It is a very big loading (cost) for treating the waste sludge. Polyhydroxyalkanoates are a family of polyhydroxyesters. The technologies of extracting PHAs from wasted sewage sludges of municipal wastewater, fermentation industry and husbandry were developed in the study. In the NaOCl/SDS extraction technology, the concentration of NaOCl and liquid-solid ratio are two essential factors directly influencing extraction efficiency. The experimental results verified under the optimal conditions for extracting PHAs, the content of recovered PHAs was 44.2±0.89 mgPHA/gVSS and the purity of recovered PHAs was >99.5 wt% for the waste sludge from municipal wastewater treatment plants. For fermentation industry sludge, under the adequate extraction conditions for PHAs recovery, the content and purity of recovered PHAs were 18.8±0.66 mgPHA/gVSS and 50.6±6.83 wt%, respectively. For husbandry sludge, the content and purity of recovered PHAs were 33.7±0.16 mgPHA/gVSS and 76.7±5.2 wt%, respectively.

ACS Style

Meng-Shan Lu; Long-Li Lai; Yung-Pin Tsai. COMPARISON OF OPTIMUM CONDITIONS WHEN EXTRACTING PHAS FROM DIFFERENT WASTE SLUDGE SOURCES. Journal of Environmental Engineering and Landscape Management 2018, 26, 190 -194.

AMA Style

Meng-Shan Lu, Long-Li Lai, Yung-Pin Tsai. COMPARISON OF OPTIMUM CONDITIONS WHEN EXTRACTING PHAS FROM DIFFERENT WASTE SLUDGE SOURCES. Journal of Environmental Engineering and Landscape Management. 2018; 26 (3):190-194.

Chicago/Turabian Style

Meng-Shan Lu; Long-Li Lai; Yung-Pin Tsai. 2018. "COMPARISON OF OPTIMUM CONDITIONS WHEN EXTRACTING PHAS FROM DIFFERENT WASTE SLUDGE SOURCES." Journal of Environmental Engineering and Landscape Management 26, no. 3: 190-194.

Conference paper
Published: 08 August 2018 in E3S Web of Conferences
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Over the past few years, National Chi Nan University (NCNU) has made significant achievements in its development as a “green university.” Besides continuing to implement sustainable development of its campus, NCNU has also been implementing the “Citizenship Cultivation Plan,” “University without Boundary Project” and “University Social Responsibility (USR) Plan,” using the local community as a test-bed, and working actively to integrate NCNU’s curriculum with the community, so as to enhance awareness of local environmental issues among students, faculty members and local residents, and build consensus of sustainable environmental development. NCNU has implemented a range of action plans and practical courses of environmental education to work together with local residents for environmental issues, such as water resources, air quality, waste, etc. Through these activities, NCNU’s students and faculty members and local residents are able to develop a better understanding of the environment, and how they can make a bigger contribution towards environmental protection. Regarding the international voluntary service activities, NCNU has endeavored to fulfil its social responsibility as a university. Under the dynamic leadership of President Dr. Yuh-Long Su, College of Science and Technology and College of Management have joined forces with “Chunghwa International Sunshine Charitable Association” established by Taiwanese businesspeople in Southeast Asia, using NCNU’s knowhow and technology to build the water purification systems in Cambodia, providing clean and safe drinking water for people in remote and disadvantaged areas. NCNU has strongly rooted in the local community with the content of the United Nations’ Sustainable Development Goals (SDGs) to build capabilities in four key areas - educational development, local action, industry-academia collaboration, and global integration - and to expand the scope of its activities from the local to the international. In the future, NCNU will continue devoting itself to sustainability and environmental issues, working wholeheartedly to meet its social responsibility goals as a university.

ACS Style

Yuhlong Oliver Su; Ku-Fan Chen; Yung-Pin Tsai; Hui-I Su. How universities can work together with local communities to create a green, sustainable future. E3S Web of Conferences 2018, 48, 06001 .

AMA Style

Yuhlong Oliver Su, Ku-Fan Chen, Yung-Pin Tsai, Hui-I Su. How universities can work together with local communities to create a green, sustainable future. E3S Web of Conferences. 2018; 48 ():06001.

Chicago/Turabian Style

Yuhlong Oliver Su; Ku-Fan Chen; Yung-Pin Tsai; Hui-I Su. 2018. "How universities can work together with local communities to create a green, sustainable future." E3S Web of Conferences 48, no. : 06001.

Journals
Published: 10 January 2018 in RSC Advances
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This study uses a trichloroethene (TCE)-contaminated site to determine the efficacy of persulfate oxidation for the treatment of TCE-contaminated groundwater.

ACS Style

Yu-Chen Chang; Ting-Yu Chen; Yung-Pin Tsai; Ku-Fan Chen. Remediation of trichloroethene (TCE)-contaminated groundwater by persulfate oxidation: a field-scale study. RSC Advances 2018, 8, 2433 -2440.

AMA Style

Yu-Chen Chang, Ting-Yu Chen, Yung-Pin Tsai, Ku-Fan Chen. Remediation of trichloroethene (TCE)-contaminated groundwater by persulfate oxidation: a field-scale study. RSC Advances. 2018; 8 (5):2433-2440.

Chicago/Turabian Style

Yu-Chen Chang; Ting-Yu Chen; Yung-Pin Tsai; Ku-Fan Chen. 2018. "Remediation of trichloroethene (TCE)-contaminated groundwater by persulfate oxidation: a field-scale study." RSC Advances 8, no. 5: 2433-2440.

Technical paper
Published: 19 December 2017 in Journal of the Air & Waste Management Association
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This study develops a low-energy rotating photocatalytic contactor (LE-RPC) that has Cu-doped TiO2 films coated on stainless-steel rotating disks, to experimentally evaluate the efficiency of the degradation and decolorization of methylene blue (MB) under irradiation from different light sources (visible 430 nm, light-emitting diode [LED] 460 nm, and LED 525 nm). The production of hydroxyl radicals is also examined. The experimental results show that the photocatalytic activity of TiO2 that is doped with Cu2+ is induced by illumination with visible light and an LED. More than 90% of methylene blue at a 10 mg/L concentration is degraded after illumination by visible light (430 nm) for 4 hr at 20 rpm. This study also demonstrates that the quantity of hydroxyl radicals produced is directly proportional to the light energy intensity. The greater the light energy intensity, the greater is the number of hydroxyl radicals produced. Implications: The CuO-doped anatase TiO2 powder was successfully synthesized in this study by a sol–gel method. The catalytic abilities of the stainless-steel film were enhanced in the visible light regions. This study has successfully modified the nano-photocatalytic materials to drop band gap and has also successfully fixed the nano-photocatalytic materials on a substratum to effectively treat dye wastewater in the range of visible light. The results can be useful to the development of a low-energy rotating photocatalytic contactor for decontamination purposes.

ACS Style

Chih-Chi Yang; Ruey-An Doong; Ku-Fan Chen; Giin-Shan Chen; Yung-Pin Tsai. The photocatalytic degradation of methylene blue by green semiconductor films that is induced by irradiation by a light-emitting diode and visible light. Journal of the Air & Waste Management Association 2017, 68, 29 -38.

AMA Style

Chih-Chi Yang, Ruey-An Doong, Ku-Fan Chen, Giin-Shan Chen, Yung-Pin Tsai. The photocatalytic degradation of methylene blue by green semiconductor films that is induced by irradiation by a light-emitting diode and visible light. Journal of the Air & Waste Management Association. 2017; 68 (1):29-38.

Chicago/Turabian Style

Chih-Chi Yang; Ruey-An Doong; Ku-Fan Chen; Giin-Shan Chen; Yung-Pin Tsai. 2017. "The photocatalytic degradation of methylene blue by green semiconductor films that is induced by irradiation by a light-emitting diode and visible light." Journal of the Air & Waste Management Association 68, no. 1: 29-38.

Journal article
Published: 01 February 2017 in Renewable Energy
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ACS Style

Shou-Te Chen; Yung-Pin Tsai; Jian-Hao Ciou; Zhi-Yuan Huang; Wei-Chih Lin; Hao Shiu. Study on saccharification techniques of alga waste harvested from a eutrophic water body for the transformation of ethanol. Renewable Energy 2017, 101, 311 -315.

AMA Style

Shou-Te Chen, Yung-Pin Tsai, Jian-Hao Ciou, Zhi-Yuan Huang, Wei-Chih Lin, Hao Shiu. Study on saccharification techniques of alga waste harvested from a eutrophic water body for the transformation of ethanol. Renewable Energy. 2017; 101 ():311-315.

Chicago/Turabian Style

Shou-Te Chen; Yung-Pin Tsai; Jian-Hao Ciou; Zhi-Yuan Huang; Wei-Chih Lin; Hao Shiu. 2017. "Study on saccharification techniques of alga waste harvested from a eutrophic water body for the transformation of ethanol." Renewable Energy 101, no. : 311-315.

Journal article
Published: 01 January 2017 in Journal of Environmental Analytical Chemistry
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This study explores the influence of temperature on the tolerance of polyphosphate accumulating organisms (PAOs) to Zn(II) in enhanced biological phosphorus removal. The results show anaerobic and aerobic metabolisms of PAOs decreased with increasing Zn(II) concentration varying between 0-2 mg L-1 and temperature indeed affected inhibitive degrees. Furthermore, Zn(II) is more toxic to anaerobic poly-P hydrolysis and glycogen degradation at 10°C than at 20 and 30°C. For anaerobic polyhydroxyalkanoate (PHA) synthesis, Zn(II) had a highly inhibitive effect at 10°C too. The inhibitions of PAOs aerobically taking up phosphorus, degrading PHA and replenishing glycogen in the presence of Zn(II) were amplified at 10°C. The metabolism of aerobic PHA degradation at 10°C was completely terminated and the aerobic replenishment of glycogen at 10° C was also completely terminated at 0.1 mg L-1 of Zn(II) due to the complete inhibition of aerobic PHA metabolism, which provides the required reducing power for synthesizing glycogen.

ACS Style

Tsai Yp; Lu Ms; Lin Jw; Chou Cc; Hu Ly. Temperature Effects on Zn(II) Toxicity to Metabolisms of Polyphosphate Accumulating Organisms in Aerobic and Anaerobic Conditions. Journal of Environmental Analytical Chemistry 2017, 04, 1 -8.

AMA Style

Tsai Yp, Lu Ms, Lin Jw, Chou Cc, Hu Ly. Temperature Effects on Zn(II) Toxicity to Metabolisms of Polyphosphate Accumulating Organisms in Aerobic and Anaerobic Conditions. Journal of Environmental Analytical Chemistry. 2017; 04 (01):1-8.

Chicago/Turabian Style

Tsai Yp; Lu Ms; Lin Jw; Chou Cc; Hu Ly. 2017. "Temperature Effects on Zn(II) Toxicity to Metabolisms of Polyphosphate Accumulating Organisms in Aerobic and Anaerobic Conditions." Journal of Environmental Analytical Chemistry 04, no. 01: 1-8.

Journal article
Published: 01 August 2013 in Advanced Materials Research
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Multi-Functional Materials and Structures IV: Removal of Humic Acids in Water by Carbon Nanotubes

ACS Style

Yung Pin Tsai; Reuy An Doong; Jhih Ci Yang; Po Chi Chuang; Chen Chiang Chou; Jan Wei Lin. Removal of Humic Acids in Water by Carbon Nanotubes. Advanced Materials Research 2013, 747, 221 -224.

AMA Style

Yung Pin Tsai, Reuy An Doong, Jhih Ci Yang, Po Chi Chuang, Chen Chiang Chou, Jan Wei Lin. Removal of Humic Acids in Water by Carbon Nanotubes. Advanced Materials Research. 2013; 747 ():221-224.

Chicago/Turabian Style

Yung Pin Tsai; Reuy An Doong; Jhih Ci Yang; Po Chi Chuang; Chen Chiang Chou; Jan Wei Lin. 2013. "Removal of Humic Acids in Water by Carbon Nanotubes." Advanced Materials Research 747, no. : 221-224.

Journal article
Published: 30 April 2013 in Chemosphere
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This study experimentally demonstrated that polyphosphate accumulating organisms (PAOs) losing the abilities of anaerobically synthesizing polyhydroxyalkanoates and aerobically taking up phosphate under Cu(II) presence was due to the inhibition of enzyme activities of acetyl-CoA synthases (ACS) and polyphosphate kinase (PPK), respectively. ACS activity tests showed the apparent maximum specific activity (Vmax) of ACS decreased with increasing Cu(II) concentration, revealing Cu(II) is a mixed inhibitor for ACS. Inhibition coefficients showed Cu(II) has a higher affinity for free ACS than for ACS-coenzyme A complex. PPK activity tests showed the Vmax substantially decreased with increasing Cu(II) concentration, revealing Cu(II) is also a mixed inhibitor for PPK. Inhibition coefficients showed Cu(II) more easily bound to free PPK than to PPK-Adenosine triphosphate complex. Experimental data also showed the aerobic mechanism of PAOs taking up phosphate was completely interrupted when 3 mg L−1 of Cu(II) was added.

ACS Style

Yung-Pin Tsai; Huey-Fen Tzeng; Jan-Wei Lin; Meng-Shan Lu; Jyun-Yen Lin. Verification of enzymes deterioration due to Cu(II) presence in an enhanced biological phosphorus removal system. Chemosphere 2013, 91, 602 -607.

AMA Style

Yung-Pin Tsai, Huey-Fen Tzeng, Jan-Wei Lin, Meng-Shan Lu, Jyun-Yen Lin. Verification of enzymes deterioration due to Cu(II) presence in an enhanced biological phosphorus removal system. Chemosphere. 2013; 91 (5):602-607.

Chicago/Turabian Style

Yung-Pin Tsai; Huey-Fen Tzeng; Jan-Wei Lin; Meng-Shan Lu; Jyun-Yen Lin. 2013. "Verification of enzymes deterioration due to Cu(II) presence in an enhanced biological phosphorus removal system." Chemosphere 91, no. 5: 602-607.

Journal article
Published: 01 December 2011 in Bioresource Technology
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This study explored the influence of sludge retention time (SRT) on tolerance of copper invasion for polyphosphate accumulating organisms (PAOs) in an enhanced biological phosphorus removal (EBPR). The experimental data showed the anaerobic polyhydroxyalkanoates (PHA) storage for the sludge at 10d SRT was less influenced by copper invasion than those at 5d and 15d SRTs. The reaction of PAOs aerobically taking up phosphate for the sludge at 5d or 15d SRT almost ceased at 2 mg Cu L(-1), whereas PAOs in the sludge at 10d SRT retained half of the ability to take up phosphate. Both the PHAs degradation and synthesis rates decreased with increasing copper concentration, regardless of the SRTs. However, the copper inhibition of the former was greater than that of the later.

ACS Style

Yung-Pin Tsai; Hsiu-Ting Chen. Influence of sludge retention time on tolerance of copper toxicity for polyphosphate accumulating organisms linked to polyhydroxyalkanoates metabolism and phosphate removal. Bioresource Technology 2011, 102, 11043 -11047.

AMA Style

Yung-Pin Tsai, Hsiu-Ting Chen. Influence of sludge retention time on tolerance of copper toxicity for polyphosphate accumulating organisms linked to polyhydroxyalkanoates metabolism and phosphate removal. Bioresource Technology. 2011; 102 (23):11043-11047.

Chicago/Turabian Style

Yung-Pin Tsai; Hsiu-Ting Chen. 2011. "Influence of sludge retention time on tolerance of copper toxicity for polyphosphate accumulating organisms linked to polyhydroxyalkanoates metabolism and phosphate removal." Bioresource Technology 102, no. 23: 11043-11047.

Journal article
Published: 01 September 2011 in Bioresource Technology
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Sludge in a sequential batch reactor (SBR) system was used to investigate the effect of lead toxicity on metabolisms of polyphosphate accumulating organisms (PAOs) and glycogen accumulating organisms (GAOs) communities fed with acetic acid or glucose as their sole carbon source, respectively. Results showed that the effect of lead on substrate utilization of both PAOs and GAOs was insignificant. However, lead substantially inhibited both of phosphate release and uptake of PAOs. In high concentration of acetic acid trials, an abnormal aerobic phosphate release was observed instead of phosphate uptake and the release rate increased with increasing lead concentration. Results also showed that PAOs could normally synthesize polyhydroxybutyrate (PHB) in the anaerobic phase even though lead concentration was 40 mg L(-1). However, they could not aerobically utilize PHB normally in the presence of lead. On the other hand, GAOs could not normally metabolize polyhydroxyvalerate (PHV) in both the anaerobic and aerobic phases.

ACS Style

Sheng-Jie You; Yung-Pin Tsai; Bo-Chuan Cho; Yi-Hsiu Chou. Metabolic influence of lead on polyhydroxyalkanoates (PHA) production and phosphate uptake in activated sludge fed with glucose or acetic acid as carbon source. Bioresource Technology 2011, 102, 8165 -8170.

AMA Style

Sheng-Jie You, Yung-Pin Tsai, Bo-Chuan Cho, Yi-Hsiu Chou. Metabolic influence of lead on polyhydroxyalkanoates (PHA) production and phosphate uptake in activated sludge fed with glucose or acetic acid as carbon source. Bioresource Technology. 2011; 102 (17):8165-8170.

Chicago/Turabian Style

Sheng-Jie You; Yung-Pin Tsai; Bo-Chuan Cho; Yi-Hsiu Chou. 2011. "Metabolic influence of lead on polyhydroxyalkanoates (PHA) production and phosphate uptake in activated sludge fed with glucose or acetic acid as carbon source." Bioresource Technology 102, no. 17: 8165-8170.

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Published: 22 March 2011 in Journal of Chemical Technology & Biotechnology
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Yung-Pin Tsai; Ruey-An Doong; Jhih-Ci Yang; Ying-Jie Wu. Photo-reduction and adsorption in aqueous Cr(VI) solution by titanium dioxide, carbon nanotubes and their composite. Journal of Chemical Technology & Biotechnology 2011, 86, 949 -956.

AMA Style

Yung-Pin Tsai, Ruey-An Doong, Jhih-Ci Yang, Ying-Jie Wu. Photo-reduction and adsorption in aqueous Cr(VI) solution by titanium dioxide, carbon nanotubes and their composite. Journal of Chemical Technology & Biotechnology. 2011; 86 (7):949-956.

Chicago/Turabian Style

Yung-Pin Tsai; Ruey-An Doong; Jhih-Ci Yang; Ying-Jie Wu. 2011. "Photo-reduction and adsorption in aqueous Cr(VI) solution by titanium dioxide, carbon nanotubes and their composite." Journal of Chemical Technology & Biotechnology 86, no. 7: 949-956.

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Published: 01 May 2010 in Journal of Chemical Technology & Biotechnology
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Jhih-Ci Yang; Chia-Hsien Yen; Wei-Jhih Wang; Jao-Jia Horng; Yung-Pin Tsai. Assessment of adequate sodium hypochlorite concentration for pre-oxidization of multi-walled carbon nanotubes. Journal of Chemical Technology & Biotechnology 2010, 85, 699 -707.

AMA Style

Jhih-Ci Yang, Chia-Hsien Yen, Wei-Jhih Wang, Jao-Jia Horng, Yung-Pin Tsai. Assessment of adequate sodium hypochlorite concentration for pre-oxidization of multi-walled carbon nanotubes. Journal of Chemical Technology & Biotechnology. 2010; 85 (5):699-707.

Chicago/Turabian Style

Jhih-Ci Yang; Chia-Hsien Yen; Wei-Jhih Wang; Jao-Jia Horng; Yung-Pin Tsai. 2010. "Assessment of adequate sodium hypochlorite concentration for pre-oxidization of multi-walled carbon nanotubes." Journal of Chemical Technology & Biotechnology 85, no. 5: 699-707.

Journal article
Published: 25 February 2010 in CLEAN – Soil, Air, Water
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Tzu-Yi Pai; Terng-Jou Wan; Yung-Pin Tsai; Chwen-Jeng Tzeng; Hsiao-Hsing Chu; Yao-Sheng Tsai; Ching-Yuan Lin. Effect of Sludge Retention Time on Nitrifiers' Biomass and Kinetics in an Anaerobic/Oxic Process. CLEAN – Soil, Air, Water 2010, 38, 167 -172.

AMA Style

Tzu-Yi Pai, Terng-Jou Wan, Yung-Pin Tsai, Chwen-Jeng Tzeng, Hsiao-Hsing Chu, Yao-Sheng Tsai, Ching-Yuan Lin. Effect of Sludge Retention Time on Nitrifiers' Biomass and Kinetics in an Anaerobic/Oxic Process. CLEAN – Soil, Air, Water. 2010; 38 (2):167-172.

Chicago/Turabian Style

Tzu-Yi Pai; Terng-Jou Wan; Yung-Pin Tsai; Chwen-Jeng Tzeng; Hsiao-Hsing Chu; Yao-Sheng Tsai; Ching-Yuan Lin. 2010. "Effect of Sludge Retention Time on Nitrifiers' Biomass and Kinetics in an Anaerobic/Oxic Process." CLEAN – Soil, Air, Water 38, no. 2: 167-172.