Article
Engineering, Chemical
Sukyoung Kim, Jaegyu Shim, Moon Son, Sanghun Park, Kyung Hwa Cho
Summary: This study investigated the fouling behavior of a desalination system and found that hydrophobic organic matter can affect the salt-removal performance of the system, while hydrophilic organic matter does not.
Article
Chemistry, Multidisciplinary
Bo Guo, Sen Zhang, Xing Xu, Baoyu Gao, Qian Li, Qinyan Yue
Summary: The deterioration of water caused by industrial production is a significant problem. This study demonstrates the use of ferric chloride and poly-ferric chloride coupled with polyamidine to enhance coagulation and remove toxic organics. The addition of polyamidine significantly improves the coagulation performance of the iron-based coagulants. The results show that charge neutralization and adsorption-bridging are the main processes for the removal of organics, and the purification performance is enhanced by the higher charge density of polyamidine.
CHINESE CHEMICAL LETTERS
(2023)
Article
Green & Sustainable Science & Technology
Kuiwu Lin, Heping Xie, Qilian Peng, Yuan Zhang, Suling Shen, Yunhong Jiang, Meng Ni, Bin Chen
Summary: The conventional method of hydrogen production using fossil fuels conflicts with the objective of renewable and sustainable energy system. Offshore wind/solar-powered seawater splitting for hydrogen production shows promise as a solution for coupling renewable energy. However, the durability of direct seawater splitting is currently an issue due to anodic chloride corrosion. To solve this issue, a novel seawater electrolysis system integrating a flow-electrode capacitive deionization unit with a robust alkaline water electrolyzer is presented. This system achieves durable operation for 100 hours and provides a practical solution for large-scale seawater splitting.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2023)
Article
Environmental Sciences
Tayebeh Goli, Yasha Jathan, Yu Yang, Krishna R. Pagilla, Eric A. Marchand
Summary: Most wastewater treatment facilities remove dissolved inorganic nitrogen (DIN) efficiently, but leave dissolved organic nitrogen (DON) at a higher proportion in the effluent. Discharged DON promotes algae growth and formation of hazardous nitrogenous disinfection byproducts (N-DBPs). This study evaluated the DON removal efficiency of enhanced coagulation at a pilot scale using different coagulants and polymer. Enhanced coagulation effectively reduced DON in the effluent with auxiliary benefits of dissolved organic carbon and orthophosphate removal.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Environmental Sciences
Guocheng Zhu, Nana Xiong, Chuang Wang, Zhongwu Li, Andrew S. Hursthouse
Summary: The study proposed a new HMW framework dividing the factors affecting coagulation into hydraulic condition, metal salt, and background water matrix. Through mathematical models, it was found that the non-linear artificial neural network (ANN) model was more accurate in predicting the experimental data than the linear partial least squares (PLS) model.
Article
Biochemistry & Molecular Biology
Rizwan Khan, Muhammad Ali Inam, Kang Hoon Lee
Summary: The study investigated the removal of tannic acid (TA)-stabilized CuO nanoparticles using polyaluminum ferric chloride (PAFC) as a coagulant in the coagulation-sedimentation (C/S) process. It was found that stirring speed in the reaction phase significantly affected removal efficiency, while pH and ionic strength (IS) impacted the colloidal stability and removal efficiency of CuO NPs. The addition of organic ligands reversed the surface charge potential and enhanced colloidal stability, leading to destabilization of TA-CuO NPs and reducing the optimal PAFC dosage for removal.
Article
Multidisciplinary Sciences
Lenan Zhang, Xiangyu Li, Yang Zhong, Arny Leroy, Zhenyuan Xu, Lin Zhao, Evelyn N. Wang
Summary: Recent advances in thermally localized solar evaporation have shown great potential in vapor generation, seawater desalination, wastewater treatment, and medical sterilization. This study demonstrates highly efficient and salt rejecting solar evaporation by manipulating fluidic flow in a wick-free confined water layer. The research elucidates the fundamentals of salt transport and offers a low-cost strategy for high-performance solar evaporation.
NATURE COMMUNICATIONS
(2022)
Article
Environmental Sciences
Kamila Jessie Sammarro Silva, Larissa Lopes Lima, Gustavo Santos Nunes, Lyda Patricia Sabogal-Paz
Summary: This study investigates the properties of aggregates in water and wastewater treatment and proposes Visibility Graph (VG) technique as an alternative method for analysis. While VG approach sheds some light onto the characteristics of aggregates over time, its effectiveness in terms of treatability needs further validation in the environmental and sanitation context.
WATER AIR AND SOIL POLLUTION
(2021)
Article
Multidisciplinary Sciences
Heping Xie, Zhiyu Zhao, Tao Liu, Yifan Wu, Cheng Lan, Wenchuan Jiang, Liangyu Zhu, Yunpeng Wang, Dongsheng Yang, Zongping Shao
Summary: This article introduces a method for direct seawater electrolysis for hydrogen production, which can solve the problems of side reactions and corrosion. In the experiment, this method stably operated for over 3200 hours under practical application conditions. The method is efficient, size-flexible, scalable, and has high practical value without increasing the operation cost.
Article
Engineering, Environmental
Junghyo Yoon, Hyukjin J. Kwon, SungKu Kang, Eric Brack, Jongyoon Han
Summary: This article introduces a portable seawater desalination system that utilizes multistage electromembrane processes to convert brackish water and seawater into drinkable water. The system is efficient and can reduce suspended solids in the source water. It addresses water challenges in remote areas.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Polymer Science
Bader S. Al-Anzi, Mehraj-ud-din Naik, Mudasir Ahmad
Summary: The coagulation process was found to be effective in removing turbidity and TSS from tile industry wastewater. The dosage of coagulant and pH values were found to greatly influence the efficiency of the coagulation process. Increasing the coagulant dosage from 10 to 50 mg/L improved the turbidity removal efficiency from 95.6% to 99.5%. Additionally, higher pH values improved the turbidity removal efficiency. The study concluded that coagulation could be a useful primary treatment process for tile industry wastewater.
Article
Engineering, Chemical
Mohsen Behnezhad, Farzad Hashemzadeh, Amir Hesam Hassani
Summary: This study investigated the effectiveness of ozonation in reducing leachate pollution of a disposal center, reporting that ozonation after coagulation-flocculation had better performance. Ferric chloride showed better efficiency under acidic conditions, with optimal efficiency at pH 11.
DESALINATION AND WATER TREATMENT
(2021)
Article
Food Science & Technology
Airton C. Bortoluzzi, Carolina E. Demaman Oro, Maicon S. N. dos Santos, Marcelo L. Mignoni, Rogerio M. Dallago, Juliana Steffens, Marcus Tres
Summary: This study evaluated the efficiency of combining chemical coagulation with membrane separation and reverse osmosis processes in treating effluents from a powdered milk dairy industry. The results showed that chemical coagulation was effective in removing some cations and color, while membrane separation and reverse osmosis processes were able to remove pollutants more comprehensively, meeting the water quality standards defined by legislation.
JOURNAL OF FOOD SCIENCE AND TECHNOLOGY-MYSORE
(2023)
Article
Environmental Sciences
Hui Yang, Yuanfei Jiang, Rui Wang, Bingyan Dong, Mengxiao Fu
Summary: The study investigated the desalination effect of a combined freezing, soaking, and centrifugal desalination process on seawater from Bohai Bay. The results showed that soaking time and initial soaking liquid temperature had an impact on the salt removal efficiency. Most ice samples treated with this process had a salt removal efficiency higher than 90%, but the ice yield rate decreased.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Environmental Sciences
Corina Petronela Musteret, Irina Morosanu, Ramona Ciobanu, Oana Plavan, Andreea Gherghel, Malek Al-Refai, Ioana Roman, Carmen Teodosiu
Summary: Natural organic matter (NOM) is a key factor affecting drinking water quality, and coagulation-flocculation (C/F) is one of the most commonly used processes for NOM removal. This study investigated the efficiency of C/F in different temperatures for river water supply, using polyhydroxy aluminum chloride and polyacrylamide as coagulant and flocculant. Multiple water quality indicators and unconventional parameters were analyzed to determine the optimal coagulation-flocculation conditions.
Article
Environmental Sciences
Dai Quyet Truong, Paripurnanda Loganathan, Le Minh Tran, Duc Loi Vu, Tien Vinh Nguyen, Saravanamuthu Vigneswaran, Gayathri Naidu
Summary: Ammonium removal from drinking water using Purolite C100E resin showed best results at pH 3-8, with maximum ion exchange capacities fitting Langmuir and Freundlich models. Co-ions in water slightly reduced ammonium removal efficiency, with ammonium having higher affinity due to lower hydrated ionic radius and H-bonding. The Purolite C100E resin displayed effective ammonium removal capabilities in fluidized bed and household filter systems.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Engineering, Chemical
Jiaxin Guo, Pak Wai Wong, Bhaskar Jyoti Deka, Baoping Zhang, Sanghyun Jeong, Alicia Kyoungjin An
Summary: This study used advanced in-situ 3D optical coherence tomography (OCT) and model simulation to reveal fouling mechanisms during industrial textile wastewater treatment with membrane distillation (MD). The study also demonstrated the effectiveness of ultrasonic cleaning to control fouling and regenerate the membrane. The C-PTFE membrane showed 99.9% dye removal in dye wastewater treatment by MD, with its looser foulant attachment attributed to its surface morphology and higher hydrophobicity explained through mathematic modeling.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Environmental Sciences
Jae-Won Jung, Siyoung Kim, Yong-Soon Kim, Sanghyun Jeong, Jieun Lee
Summary: This study investigated the presence and removal efficiency of microplastics (MPs) in Korean drinking water treatment plants. The results showed that the number of MPs was higher in river sites compared to reservoir sites, with minimal differences during June to October. The main types of MPs found in raw water were polyethylene (PE)/polypropylene (PP) and polyethylene terephthalate (PET)/poly(methyl methacrylate) (PMMA).
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Engineering, Chemical
Yongsun Jang, Jung-Gil Lee, Luca Fortunato, Jieun Lee, Yejin Lee, Alicia Kyoungjin An, Noreddine Ghaffour, Sangho Lee, Sanghyun Jeong
Summary: This study evaluated the impact of colloidal silica fouling on membrane distillation, finding that silica particle size, feed temperature, salinity, and flow rate all affect fouling formation. Smaller silica particles result in higher flux decline and denser fouling. Fouling is minimized at the optimal flow rate, while salinity has little effect on fouling.
Article
Environmental Sciences
Jin-Kyu Kang, Eun-Jin Seo, Chang-Gu Lee, Sanghyun Jeong, Seong-Jik Park
Summary: In this study, the conditions for synthesizing Fe-loaded food waste biochar (Fe@FWB) for Cr(VI) removal were optimized and explored using response surface methodology (RSM) and artificial neural network (ANN). The results showed that the pyrolysis temperature and Fe concentration had a significant effect on the Cr(VI) adsorption capacity of Fe@FWB, while the effect of pyrolysis time was relatively small. The optimized Fe@FWB (Fe@FWB-OPT) synthesized under the optimal conditions had a high Cr(VI) sorption capacity and the adsorption mechanism was mainly attributed to electrostatic attraction.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Review
Engineering, Environmental
Jehad A. Kharraz, Noman Khalid Khanzada, Muhammad Usman Farid, Jeonghwan Kim, Sanghyun Jeong, Alicia Kyoungjin An
Summary: Membrane bioreactors (MBRs) are advanced wastewater treatment technology that combines activated sludge with a membrane separation process. Membrane distillation (MD) bioreactor (MDBR) is a novel technology that combines MBRs with MD units. MDBR has the potential for water, nutrients, bioenergy, and other value-added product recovery from wastewater.
JOURNAL OF WATER PROCESS ENGINEERING
(2022)
Article
Engineering, Environmental
H. N. P. Dayarathne, Michael J. Angove, Sanghyun Jeong, Rupak Aryal, Shukra Raj Paudel, Bandita Mainali
Summary: Temperature plays a critical role in turbidity removal by coagulation. The appropriate coagulant dosage is proportional to pH and temperature. Temperature significantly affects turbidity removal efficiency, which is also influenced by coagulant solubility and sludge recirculation.
JOURNAL OF WATER PROCESS ENGINEERING
(2022)
Article
Engineering, Environmental
Jieun Lee, Jiae Wang, Yumin Oh, Sanghyun Jeong
Summary: In this study, the flocculation/coagulation method using in-situ ferrate treatment was found to be highly efficient in removing PE and PET microplastics from water. The process was particularly effective in water with low concentrations of organic matter.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Green & Sustainable Science & Technology
Joonho Yeo, Shauhrat S. Chopra, David von Eiff, Sanghyun Jeong, Lin Zhang, Alicia Kyoungjin An
Summary: This study conducted a hybrid cost-benefit analysis and integrated environmental externality approach to evaluate the net benefit of wastewater treatment and reclamation. The results showed that the true benefit of wastewater reclamation is higher than the unit cost, making it a viable option from both social and economic perspectives. The study provides a basic guideline for developing comprehensive economic valuation of wastewater treatment and reclamation projects.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Biochemistry & Molecular Biology
Jieun Lee, Yejin Lee, Jeonghyeon Lee, Minseong Kang, Sanghyun Jeong
Summary: This study reveals that contact lens waste can generate microplastics and nanoplastics in aquatic environments during degradation. However, the discharge of microplastics from wastewater treatment plant effluents and human activity is still unknown. The findings highlight the significant impact of contact lens waste on microplastic pollution in water environments.
Article
Engineering, Environmental
Seongeom Jeong, Boram Gu, Subi Choi, Suk-kyun Ahn, Jaegeun Lee, Jieun Lee, Sanghyun Jeong
Summary: This study improved the efficiency of membrane distillation by optimizing the design of 3D printed feed spacers and incorporating carbon nanomaterials. The use of nanomaterial-incorporated spacers significantly increased the permeate flux and reduced ion permeation through the membrane.
Article
Biochemistry & Molecular Biology
Seonguk Ha, Jieun Lee, Seongeom Jeong, Sanghyun Jeong
Summary: This study aimed to investigate membrane fouling characteristics and determine control strategies for concentrating liquid desiccants using membrane distillation. Two different desiccants, lithium chloride and potassium formate, were tested. Results showed that water flushing was the most effective method for controlling membrane fouling. Air backwashing and membrane spacer had limited cleaning effects. Therefore, combining water flushing with membrane spacer can maintain high flux and low fouling tendency.
Article
Multidisciplinary Sciences
Jiae Wang, Jieun Lee, Eilhann E. Kwon, Sanghyun Jeong
Summary: Since the COVID-19 outbreak, the use of disposable plastics has increased, leading to an increase in plastic waste. This study examines the release mechanisms of microplastics and pollutants from polystyrene through factors such as pH, temperature, and exposure time. The results suggest that the release of microplastics and pollutants follows a similar process, while the migration of styrene monomers follows a different process.
Article
Metallurgy & Metallurgical Engineering
Jung-Hoon Sul, Benjamin Probyn, Brendan Donnelly, Lasitha Piyathilaka, Sanghyun Jeong
Summary: Premature failure of AFC chains due to corrosion is a significant cause of unplanned downtime on longwall equipment. The impact of reverse osmosis (RO) water treatment on the corrosion of AFC chains is unclear. This study investigates the direct effects of RO water on AFC chain corrosion and finds that although dam water has higher levels of calcium, chloride, sulphate, sodium, and magnesium, RO water more vigorously dissolves calcium carbonate scales, leading to increased corrosion of AFC chains.
MINING METALLURGY & EXPLORATION
(2023)
Article
Engineering, Environmental
Dongyeon Kim, Minsu Pyo, Daegi Kim, Sanghyun Jeong, Kang Hoon Lee, Eui-Jong Lee
Summary: In this study, sulfur powder was used to effectively remove remaining nitrate in a biological treatment process. The potential for membrane fouling in a sulfur-based denitrification reactor was investigated and compared to a conventional activated sludge. The results showed higher removal efficiency in the sulfur-based denitrification reactor but more significant membrane fouling.
CHEMICAL ENGINEERING JOURNAL
(2023)
