Article
Engineering, Chemical
Holly M. Haflich, Maria A. Ramirez Membreno, Hyungyung Jo, Kun Huang, Michael Toomey, John A. Howarter, Amisha D. Shah
Summary: Polyamide-based membranes used in reverse osmosis and nanofiltration can react with chlorine-based disinfectants, impacting membrane performance. This study found that chlorination was more detrimental to polyamide structural integrity compared to chloramination. The type of halides present significantly influenced membrane and monomer changes during chloramination.
JOURNAL OF MEMBRANE SCIENCE
(2021)
Article
Engineering, Environmental
Yan Zhang, Wenjing Tang, Jing Bai, Jinhua Li, Jiachen Wang, Tingsheng Zhou, Xiaohong Guan, Baoxue Zhou
Summary: An efficient electrochemical system was developed to simultaneously remove total nitrogen and dissolved organic compounds in wastewater reclamation by utilizing chlorine radicals. Co3O4 nanowires outperformed other nanomaterials, achieving high removal rates for NH3-N and DOC in synthetic ROC.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Review
Chemistry, Organic
Li-Qing Ren, Na Li, Jie Ke, Chuan He
Summary: This review highlights the recent advances in the field of photo- and electrocatalysis-mediated radical silylation reactions, aiming to inspire further research and applications in this emerging area.
ORGANIC CHEMISTRY FRONTIERS
(2022)
Article
Green & Sustainable Science & Technology
Zheng-Qian Liu, Chenxi Huang, Jia-Ying Li, Jingjing Yang, Bing Qu, Sui-Qin Yang, Yu-Hong Cui, Yahui Yan, Shiquan Sun, Xiaohui Wu
Summary: In this study, ozonation with commercial activated carbon catalyst was used to treat coal gasification ROC, showing that AC catalytic ozonation is more effective; initial pH change has different effects on ozonation and AC catalytic ozonation, with ozonation being more affected; AC catalytic ozonation is more suitable for CG-ROC treatment.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Environmental Sciences
My Thi Tra Ngo, Binh Quoc Diep, Hideaki Sano, Yasuhisa Nishimura, Sandrine Boivin, Hitoshi Kodamatani, Haruka Takeuchi, Satya Candra Wibawa Sakti, Takahiro Fujioka
Summary: Membrane distillation showed low membrane fouling and high removal efficiency of dissolved ions during water recycling, but had low rejection for certain specific compounds and may require post-treatment. Reverse osmosis, on the other hand, exhibited better performance in removing specific compounds but had a higher risk of membrane fouling.
Review
Chemistry, Physical
Kejia Wu, Minglong Cao, Qiang Zeng, Xuehui Li
Summary: Lignin, as a major component of woody biomass, is a natural organic polymer and the only abundant natural renewable resource with aromatic nucleus. Chemical catalysis induced depolymerization and photocatalysis and electrocatalysis are effective methods for lignin utilization. In this contribution, the radical and (photo)electron transfer induced reaction mechanisms of lignin depolymerization are discussed, along with the challenges and opportunities of photo(electro)catalysis in lignin valorization.
GREEN ENERGY & ENVIRONMENT
(2023)
Article
Engineering, Environmental
Yunqian Song, Chun Zhao, Tuo Wang, Zheng Kong, Liushi Zheng, Haojie Ding, Yuanyuan Liu, Huaili Zheng
Summary: The novel water treatment process combining electrolysis, permanganate, and ozone showed synergistic effects in degrading various organic contaminants with less energy consumption. Increasing permanganate dosage, O-3 concentration, current density, and decreasing pH enhanced the degradation of diclofenac and other organic pollutants.
Article
Engineering, Environmental
Victor Manuel Torres Serrano, Lordina Ekua Eshun, Andreia Farinha, Geert-Jan Witkamp, Szilard Bucs
Summary: In this study, electrocoagulation with iron electrodes was used to remove two phosphonates from concentrates. The research showed the high selectivity of electrocoagulation in removing phosphonates and the effectiveness of calcium carbonate precipitation in capturing the phosphonates. Further research is needed to optimize the recovery procedure and improve the results.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Engineering, Environmental
Chong Wang, Zhi Wang, Jixiao Wang
Summary: A novel method involving UV irradiation was proposed in this study to improve the performance of polyamide thin film composite (PA-TFC) membrane, leading to enhanced water flux, selectivity, and anti-fouling performance. By adjusting material concentrations and reaction time, the method demonstrated the potential to further enhance membrane performance, indicating its potential for industrial applications.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Chemical
Yongli Jiao, Liwei Liu, Qizhan Zhang, Minghua Zhou, Ying Zhang
Summary: The study demonstrates that the EP process is the most efficient in treating ROC wastewater, and the combination of PC and EP processes significantly reduces energy consumption while achieving complete decolouration.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Yangyang Yan, Shaowen Cheng, Ping Zhou, Heying Li, Xiaoran Liu, Manping Lin, Feihu Xie, Keke Zhang, Yi Zhang, Chenyang Zhang, Shuang Zhao, Jiahua Shi, Jinghua Li
Summary: In this study, a photo-electro Fenton catalytic nanoplatform was developed using concave octopus-like PtCu nanoframes for the degradation of organic dyestuff. The electrochemical oxidation reaction was employed to generate hydrogen peroxide (H2O2) on the interface of PtCu nanoframes, facilitating on-demand aqueous remediation through the electro-Fenton process.
NANOSCALE ADVANCES
(2022)
Article
Engineering, Chemical
Yuhao Zhang, Haorui Wang, Tao Zhang, Zhi Geng, Wei Cheng
Summary: A facile citric acid chelated Fe(II)/PDS modification method was used to generate a controlled-release SO4.- oxidation condition at room temperature, which enhanced the performance of the membrane.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Maryam Behrouzeh, Mohammad Mehdi Parivazh, Elnaz Danesh, Mohammad Javad Dianat, Mohsen Abbasi, Shahriar Osfouri, Amir Rostami, Mika Sillanpaa, Mahdieh Dibaj, Mohammad Akrami
Summary: This study focuses on the treatment of organic compounds DMSO and DMAC in wastewater using advanced oxidation processes (AOPs). By studying various AOPs and analyzing the effects of operating parameters, it was concluded that the Electro-Fenton process is the most suitable method for the efficient removal of DMSO and DMAC.
ARABIAN JOURNAL OF CHEMISTRY
(2022)
Article
Engineering, Environmental
Qin Wang, Puxin Shi, Zhiye Sun, Jixiao Wang, Baoan Li
Summary: A hybrid ozone-membrane aerated biofilm reactor (O3-MABR) system was designed to treat municipal reverse osmosis concentrate (mROC). Under the optimal operating conditions, the effluent COD and TN concentration of the coupling system met the discharge standard of pollutants for wastewater treatment plants. High-throughput sequencing technology revealed the dominant phyla in the biofilms of MABR.
JOURNAL OF WATER PROCESS ENGINEERING
(2023)
Article
Environmental Sciences
Shizong Wang, Jianlong Wang
Summary: This study utilized various methods to activate PMS for SNRP process to enhance mineralization of SMX. The results showed that different SNRP methods had varying effects on the mineralization of SMX, with biochar-induced SNRP being the most effective.
Article
Engineering, Environmental
Jaemin Choi, Hak-Hyeon Kim, Ki-Myeong Lee, Na Chen, Min Sik Kim, Jiwon Seo, Donghyun Lee, Haein Cho, Hyoung-il Kim, Jaesang Lee, Hongshin Lee, Changha Lee
Summary: The generation of hydroxyl radicals by visible light-illuminated tungsten oxide is significantly improved in the presence of hydrogen peroxide and bicarbonate ion. The ternary system shows synergistic enhancement in benzoic acid oxidation, with less consumption of hydrogen peroxide compared to the binary system.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Environmental Sciences
Sungwon Kim, Saemi Kim, Hee-Jin Park, Soomin Park, Jee Yeon Kim, Yong Won Jeong, Hae Heon Yang, Youngsup Choi, Minjoo Yeom, Daesub Song, Changha Lee
Summary: The practical scale photocatalytic air purifier equipped with a TiO2/H-ZSM-5 composite bead filter showed effective removal of indoor VOCs and viruses under UVA-LED illumination. The composite beads exhibited superior photocatalytic activity for degrading VOCs and excellent efficacy in inactivating pathogenic coronaviruses, including SARS-CoV-2, by more than 99.999% in 1 hour. The sustainability of the composite bead filter for VOC removal was confirmed through regeneration and accelerated durability tests.
ENVIRONMENTAL RESEARCH
(2022)
Review
Engineering, Environmental
Yeonseo Jeong, Gyeongtaek Gong, Hye-Jin Lee, Jihye Seong, Seok Won Hong, Changha Lee
Summary: Microplastics (MPs) are emerging contaminants that pose threats to the environment and human health. Efficient treatment methods are needed at wastewater treatment plants and drinking water treatment plants. This review explores the potential of various oxidation processes in treating MPs, but many of them have not been widely applied due to cost and lack of research.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Engineering, Environmental
Beom Joon Kim, Joon-Young Choi, Hye-Jin Lee, Changha Lee
Summary: Advanced oxidation processes (AOPs) have been proposed as alternative methods for treating reverse osmosis (RO) concentrate, which is a major concern for water reclamation plants. Different AOPs, including conventional Fenton, UV/H2O2, ozonation, anodic oxidation, and electro-Fenton processes, were evaluated for their ability to remove dissolved organic carbon (DOC) in RO concentrate. The study also calculated the operation costs of these AOPs. The results showed that conventional Fenton and ozonation processes were the most cost-efficient among the tested methods.
ENVIRONMENTAL ENGINEERING RESEARCH
(2023)
Article
Engineering, Environmental
Mingizem Gashaw Seid, Aseom Son, Kangwoo Cho, Jeehye Byun, Seok Won Hong
Summary: This study aimed to investigate the structural effect of engineered TiO2 samples on the formation of major nitrosamines during photocatalysis. The nitrogen-containing impurities and leached metal ions from doped-TiO2 samples could exacerbate nitrosamine formation potential. Pre-purification and immobilization of doped-TiO2 samples are suggested to remove a considerable amount of nitrosamines.
Article
Engineering, Environmental
Dongwon Cha, Gyuseung Lim, Hwajoo Joo, Jeyong Yoon, Changha Lee
Summary: This study demonstrates the feasibility of incorporating experimental results from a pilot-scale UV/H2O2 system into a multiphysics model. Various factors affecting contaminant degradation and oxidant production were investigated, and the model predictions exhibited a good correlation with the experimental results. 3-D visualizations using the model allow further in-depth analysis of the distribution of oxidants and target pollutant in the UV photoreactor, providing insights into the possibilities of reactor optimization.
ENVIRONMENTAL ENGINEERING RESEARCH
(2023)
Article
Biotechnology & Applied Microbiology
Dongwoo Suh, Hoeun Jin, Hosik Park, Changha Lee, Young Hoon Cho, Youngbin Baek
Summary: Virus filtration is an important step in biopharmaceutical downstream processes to ensure viral safety. However, protein fouling poses a challenge to the filtration capacity and may result in virus breakthrough. This study investigated the effects of protein fouling on filtrate flux and virus breakthrough using different commercial membranes. The results showed that protein concentration and hydrodynamic forces influenced the flux decay tendency, and membranes with larger pore diameters were more prone to virus breakthrough.
BIOTECHNOLOGY AND BIOENGINEERING
(2023)
Article
Engineering, Chemical
Min Sik Kim, Dongwon Cha, Se Mi Lee, Hyungjin Jeong, Changha Lee
Summary: This study presents four models for predicting the rate of brine evaporation from different meteorological factors. The models were validated through laboratory and outdoor experiments, showing good accuracy and reliability.
Article
Engineering, Environmental
Hye-Jin Lee, Minjung Shin, Min Sik Kim, Taewan Kim, Ki-Myeong Lee, Noh-Back Park, Jong-Chan Lee, Changha Lee
Summary: This study evaluated four different chemical disinfectants for their potential use in inland fish farms to control red tides. It found that ozone (O3) and permanganate (MnO4 ) showed the highest efficacy in inactivating C. polykrikoides cells. Sodium hypochlorite (NaOCl) and hydrogen peroxide (H2O2) also showed effectiveness but produced byproducts and had lower toxicity to fish. Based on the overall factors, H2O2 was suggested as the most practical disinfectant for controlling red tides in inland fish farms.
Article
Nanoscience & Nanotechnology
Evandi Rahman, Jiho Lee, Seung Ji Lim, Aseom Son, Jiyun Han, Kangwoo Cho, Seok Won Hong
Summary: We developed low-cost cathodes for the electrochemical reduction of NO3- in wastewater. By simple reconstruction of stainless steel, we obtained cathodes with superior stability and efficiency, making them suitable for NO3- removal in wastewater treatment.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Biotechnology & Applied Microbiology
Dongwoo Suh, Hoeun Jin, Changha Lee, Youngbin Baek
Summary: Virus filtration in biopharmaceutical downstream process ensures viral safety, but there is a risk of virus breakthrough. This study used Viresolve & REG; Pro membrane to investigate virus breakthrough under various conditions. The results suggest that protein concentration and low flux operation can increase the likelihood of virus escape through the membrane. These findings provide important insights for ensuring viral safety in biopharmaceutical production.
BIOCHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Jiyun Han, Subeen Park, Mingizem Gashaw Seid, Byeongho Park, Soo Hyun Lee, Hyung Min Kim, Changha Lee, Jaesang Lee, Jae Hun Kim, Seok Won Hong
Summary: Due to the increase in plastic waste during the COVID-19 pandemic, concerns about microplastic pollution in water environments are growing. In this study, a differential interference contrast (DIC) system was proposed and demonstrated to detect microplastics in aqueous samples. The results showed that this method enables real-time morphological detection and quantification of microplastics down to 200 nm, improving analysis efficiency and size-detection limit.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Engineering, Environmental
Sung Ho Chae, Seung Ji Lim, Mingizem Gashaw Seid, Wondesen Workneh Ejerssa, Aseom Son, Heejong Son, Sangki Choi, Woongbae Lee, Yunho Lee, Seok Won Hong
Summary: This study aimed to implement a comprehensive prediction model for the fate of micropollutants in wastewater treatment plants (WWTPs). Through monitoring five WWTPs in South Korea, it was found that the majority of micropollutants were effectively removed by biological treatment processes. Furthermore, the prediction model was improved by optimizing the biodegradation rate constants of each micropollutant, resulting in more accurate predictions of actual data.
Article
Engineering, Environmental
Ji Won Lee, Donghyun Lee, Hye-Jin Lee, Soojin Shim, Je Hun Kim, Changha Lee
Summary: This study observed that the oxidative degradation of urea by chlorination can be enhanced by a pH swing, where the first stage reaction occurs under acidic pH and the second stage reaction occurs at a neutral or alkaline pH. The degradation rate of urea is influenced by chlorine dose and pH in the second stage. pH-swing chlorination is based on the pH dependence of urea chlorination sub-processes. The formation of different chlorinated ureas is favored under specific pH conditions.
Article
Nanoscience & Nanotechnology
Evandi Rahman, Sukhwa Hong, Jaesang Lee, Seok Won Hong, Kangwoo Cho
Summary: This study reports a Ni0.33Fe0.67Oy/TiO2 heterojunction anode prepared by sol-gel coating and thermal decomposition, which showed comparable ClER efficiency to benchmarking Ir7Ta3Oy/TiO2 in neutral NaCl solutions. The outer TiO2 was identified as the active ClER center. Ni0.33Fe0.67Oy exhibited superior OER activity compared to other Fe-doped Ni oxides, indicating its potential as an ohmic contact for ClER.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Engineering, Environmental
Rong-Gui Zhu, Chang-Gui Pan, Feng-Jiao Peng, Chao-Yang Zhou, Jun-Jie Hu, Kefu Yu
Summary: This comprehensive survey investigated the occurrence, bioaccumulation, and trophic magnification of parabens and their metabolite 4-HB in a marine food web. Results showed that parabens were the predominant pollutants in marine organisms, with significant bioaccumulation from sediments. The estimated trophic magnification factor indicated biomagnification for MeP and trophic dilution for 4-HB. Overall, the risks for humans consuming marine organisms were found to be low.
Article
Engineering, Environmental
Andres F. Torres-Franco, Deborah Leroy-Freitas, Cristina Martinez-Fraile, Elisa Rodriguez, Pedro A. Garcia-Encina, Raul Munoz
Summary: Anaerobic and microalgae-based technologies have emerged as sustainable alternatives for municipal wastewater treatment. However, the presence of viruses in the treated wastewater is a major concern for reuse applications. This study assessed the ability of these technologies to reduce viruses during secondary wastewater treatment. The results showed that all technologies were effective in reducing the concentration of viruses, with microalgae-based treatment exhibiting the highest potential for reducing the disinfection requirements of treated wastewater.
Article
Engineering, Environmental
Young Gwang Kim, Sae Yun Kwon, Spencer J. Washburn, Scott C. Brooks, Ji Won Yoon, Lucien Besnard
Summary: The study uses Hg isotope ratios to identify the sources and exposure pathways of mercury in bivalves, finding that dissolved Hg phases in the water column are the primary source and exposure pathway to bivalves. This provides new insights into using bivalves as bioindicators for sediment quality monitoring.
Article
Engineering, Environmental
Hui Geng, Ying Xu, Rui Liu, Dianhai Yang, Xiaohu Dai
Summary: This study investigates the effect of cation exchange resin (CER) on the sequential recovery of hydrogen and methane from anaerobic digestion (AD) and the corresponding mechanisms. The results show that CER can simultaneously enhance the production of hydrogen and methane by promoting the solubilisation, hydrolysis, and acidification of organic matter. Additionally, CER facilitates effective contact between bacteria and organic particulates and reduces the energy barrier for mass transfer during methane production. The study also reveals changes in the microbial community structure and metagenomics during the AD process.
Article
Engineering, Environmental
Xiaojing Lin, Zhan Jin, Shunfeng Jiang, Zhiquan Wang, Suqing Wu, Ke Bei, Min Zhao, Xiangyong Zheng
Summary: Dehumidification combined with addition of absorbent resin supplement (ARS) was used to achieve rapid evaporation of non-pretreated urine, resulting in high water evaporation efficiency and nutrient recovery.
Article
Engineering, Environmental
Yangli Che, Chaoran Lin, Shen Li, Jiao Liu, Longhai Zhu, Shilei Yu, Nan Wang, Haoshuai Li, Mutai Bao, Yang Zhou, Tonghao Si, Rui Bao
Summary: Hydrodynamic processes play a crucial role in the transmission of sediments, microbial assembly, and organic carbon redistribution in the ocean. Through experiments and analysis, we found that hydrodynamics shape the assembly of microbial communities and control the redistribution of different sourced organic carbon, thereby influencing microbial-mediated biogeochemical transformation.
Article
Engineering, Environmental
Chao Chen, Yu Yang, Nigel J. D. Graham, Zhenyu Li, Xingtao Yang, Zhining Wang, Nadia Farhat, Johannes S. Vrouwenvelder, Li -an Hou
Summary: The fouling of seawater reverse osmosis membranes is a persistent challenge in desalination. This study monitored the operational performance of a desalination plant for 7 years and the fouling development in different areas of membrane modules. The findings showed that operational performance declined over time and fouling mainly occurred at the feed side of the modules, with the highest microbial diversity. Keystone species like Chloroflexi and Planctomycetes played an important role in maintaining community structure and biofilm maturation. Polysaccharides, soluble microbial products, marine humic acid-like substances, and inorganic substances contributed to fouling. Overall, biofouling had a significant impact on membrane fouling after 7 years of operation.
Article
Engineering, Environmental
Dan Li, Jieyi Sun, Yibo Fu, Wentao Hong, Heli Wang, Qian Yang, Junhong Wu, Sen Yang, Jianhui Xu, Yunfei Zhang, Yirong Deng, Yin Zhong, Ping'an Peng
Summary: Sulfidation-oxidation treatment of magnetite (Fe3O4) enhances the production of dark center dot OH, which can efficiently degrade dissolved organic matter (DOM) and accelerate carbon cycling.
Article
Engineering, Environmental
Cheng Yu, Kaijun Wang, Kaiyuan Zhang, Ruiyang Liu, Pingping Zheng
Summary: This study implemented a microaerobic-aerobic configuration in a full-scale municipal wastewater treatment facility and investigated the effects on sludge characteristics, pollutant removal, microbial community, and granulation mechanisms. The results showed successful transition from flocculent-activated sludge to well-defined AGS after two months of operation. The primary pathways for pollutant removal were simultaneous nitrification, denitrification, and phosphorus removal. Moreover, the incorporation of internal separators induced shifts in the flow pattern, which promoted granulation.
Article
Engineering, Environmental
Zhe Zhang, Shaoyang Hu, Guangrong Sun, Wei Wang
Summary: Halogenated aromatic disinfection byproducts (DBPs), such as halogenated phenols, have garnered widespread attention due to their high toxicity and prevalence. This study reports on the analysis, occurrence, and cytotoxicity of a group of emerging halogenated aromatic DBPs, known as halogenated polyhydroxyphenols (HPPs), in drinking water.
Article
Engineering, Environmental
Shengyue Chen, Jinliang Huang, Peng Wang, Xi Tang, Zhenyu Zhang
Summary: Accurate prediction of river water quality is crucial for sustainable water management. This study introduces wavelet analysis and transfer learning techniques to assist LSTM modeling, proposing a newly coupled modeling approach that improves short-term prediction of river water quality.
Article
Engineering, Environmental
Bang Du, Xinmin Zhan, Piet N. L. Lens, Yifeng Zhang, Guangxue Wu
Summary: Efficient anaerobic digestion relies on the cooperation of different microorganisms with different metabolic pathways. This study investigated the effects of different operational modes and the addition of powdered activated carbon (PAC) on ethanol metabolic pathways. The results showed that the SBR mode and the presence of CO2 facilitated ethanol metabolism towards propionate production, while the CFR mode with extended solids retention time enriched Geobacter. Adjusting operational modes and PAC addition can modulate anaerobic ethanol metabolism and enrich Geobacter.
Article
Engineering, Environmental
Wanfa Wang, Si-Liang Li, Jun Zhong, Yuanbi Yi, Fujun Yue, Zenglei Han, Qixin Wu, Ding He, Cong-Qiang Liu
Summary: This study compares the carbon biogeochemical processes in karst and non-karst regions within large thermal stratified river-reservoir systems. The results demonstrate that karst reservoirs have a reduced potential for carbon emissions and highlight the importance of considering geologic settings to improve accuracy in regional and global CO2 emission estimates.
Article
Engineering, Environmental
Chunxia Jiang, Zelong Zhao, Dong Zhu, Xiong Pan, Yuyi Yang
Summary: This study analyzed the occurrence and distribution of antibiotic resistance genes (ARGs) in different environmental media of the Yangtze River using metagenomics. Core resistome dominated by multidrug resistance genes was found in all samples, while rare resistome dominated by various resistance genes was more prevalent in plasmids. Specific bacteria were identified as hosts for both core and rare resistomes, with high clinical concern ARGs found in the rare resistome. Particle-associated environment provided the most ideal conditions for resistome hosts. This study provided insights into the genetic locations of ARGs and the community assembly mechanisms of ARG hosts in freshwater environments.
Article
Engineering, Environmental
Yu Zhang, Yongtao He, Linchun Jia, Lei Xu, Zheng Wang, Yueling He, Ling Xiong, Xumeng Lin, Hong Chen, Gang Xue
Summary: By synergizing organic carbon source, thiosulfate, and zero-valent iron, efficient mixotrophic denitrification of oligotrophic secondary effluent can be achieved. Thiosulfate plays a vital role in promoting TN removal efficiency, while corrosion of Fe0 releases OH- to neutralize H+ from thiosulfate-driven denitrification, creating a suitable environment for denitrification. The coordination of thiosulfate and Fe0 maintains the dominance of Thiobacillus for denitrification.