Article
Engineering, Environmental
Zhiwei Zhou, Yanyan Yao, Yanling Yang, Xing Li, Jiawei Ren, Jiangwei Qin
Summary: The physicochemical properties of powdered activated carbon (PAC) are important factors affecting its adsorption performance. In this study, the physicochemical properties of PACs were modified by hydrogen peroxide and/or ultrasound to improve the adsorption performance. The results showed that PAC with larger mesoporous volume, average pore size, and abundant acid groups had good adsorption performance towards organic pollutants.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Engineering, Environmental
Sangki Choi, Heejong Son, Young Mo Kim, Yunho Lee
Summary: A combined process of coagulation and powdered activated carbon (PAC) was tested as an alternative primary wastewater treatment option. The results showed that simultaneous coagulation and PAC treatment achieved higher removal rates of dissolved organic carbon and organic micropollutants.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Engineering, Environmental
Al-Bloushi Mohammed, Arun Kumar S. Raju, Jieun Lee, Yumin Oh, Sanghyun Jeong
Summary: This study successfully reduced the amount of nutrients and microorganisms in seawater using GAC biofiltration and UF membrane pretreatment systems, thereby minimizing biofouling. The hybrid GAC/UF process showed promising results in reducing chemical usage and mitigating biofouling growth in seawater cooling towers.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Engineering, Environmental
J. Qian, P. Riede, G. Abbt-Braun, J. Parniske, S. Metzger, T. Morck
Summary: In this study, the efficacy of Powdered Activated Carbon (PAC)-Activated Sludge (AS) treatment in removing organic micropollutants (OMPs) was investigated through batch and pilot plant experiments. The results showed that the treatment was capable of achieving a high removal efficiency for nine OMPs. Additionally, intermittent dosage of PAC was found to stably remove OMPs, suggesting potential cost savings in terms of investment and maintenance.
JOURNAL OF WATER PROCESS ENGINEERING
(2022)
Article
Environmental Sciences
Semra Bakkaloglu, Mahmut Ersan, Tanju Karan, G. Onur Apul
Summary: The study found that superfine pulverization can improve the adsorption kinetics of activated carbon, especially for short contact times, although the dissolved organic carbon concentration has a negative impact on the adsorption efficiency.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Engineering, Environmental
Jingyu Zhang, Sijia Yu, Jingwei Wang, Zhi-Ping Zhao, Weiwei Cai
Summary: In this study, a novel process combining powered carbon (PC) and fluidized granular activated carbon (GAC) with ultrafiltration was proposed to achieve high effluent quality and reduce membrane fouling. It was found that fluidized spherical GAC (RGAC) was highly effective in reducing fouling associated with biochar, and the overall fouling rate of the system was even lower than that of a system using powdered activated carbon (PAC). The RGAC-biochar-UF system achieved similar effluent quality but better permeability compared to the RGAC-PAC-UF system, with a 20% cost savings, making it a promising water treatment system for large-scale applications.
Article
Engineering, Environmental
Hana Atallah Al-asad, Janna Parniske, Jueying Qian, Jens Alex, Sreenivasan Ramaswami, Korbinian Kaetzl, Tobias Morck
Summary: This study presents a mathematical method to describe the removal of organic micropollutants and dissolved organic carbon from wastewater using powdered activated carbon. The developed model can predict the adsorption behavior of organic pollutants and simulate the process under different operating conditions.
Article
Green & Sustainable Science & Technology
Muthia Elma, Amalia Enggar Pratiwi, Aulia Rahma, Erdina Lulu Atika Rampun, Mahmud Mahmud, Chairul Abdi, Raissa Rosadi, Dede Heri Yuli Yanto, Muhammad Roil Bilad
Summary: The study investigated the use of coagulation and adsorption as pretreatments for ultrafiltration to remove NOM from peat water. The results showed that the combination of these treatment stages significantly improved the UF performance by effectively reducing NOM and lowering fouling propensity.
Article
Environmental Sciences
Xinyu Li, Yanling Yang, Xing Li, Nan Wang, Tingting Zhang, Siyang Ji, Zhiwei Zhou
Summary: Wooden PAC showed the best adsorption capacities among the three types compared in this study. Modification with formic acid significantly improved the adsorption efficiency, while NaOH modification decreased the adsorption capacity.
ENVIRONMENTAL TECHNOLOGY
(2021)
Article
Engineering, Chemical
Qi Wang, Frederik Zietzschmann, Roberta Hofman-Caris, Nan Jiang, Jonas Schuster, Zheng Wang, Jianwei Yu, Min Yang, Luuk C. Rietveld
Summary: It was found that dissolved organic matter (DOM) in natural water has ubiquitous competitiveness against organic micropollutants (OMPs) during adsorption onto activated carbon. However, not all adsorbable DOM fractions are competitive. The poorly adsorbable DOM was shown to be a non-competitive co-adsorbate and can even enhance the adsorption capacity of certain OMPs. The amount of DOM competitors increased for weaker adsorbable OMPs and at higher initial OMP concentrations.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Engineering, Environmental
Luan de Souza Leite, Maria Teresa Hoffmann, Fabio Simoes de Vicente, Danilo Vitorino dos Santos, Luiz Antonio Daniel
Summary: The traditional bituminous activated carbon showed the best performance for AOM removal, followed by babassu coconut activated carbon. Additionally, significant reductions in trihalomethanes formation potential were achieved.
JOURNAL OF WATER PROCESS ENGINEERING
(2021)
Article
Engineering, Chemical
Sijia Yu, Jingwei Wang, Zhiping Zhao, Weiwei Cai
Summary: This study proposes a method that combines fluidized granular activated carbon (GAC) and PAC with the UF process to improve water treatment efficiency. The results show that fluidized GAC particles effectively remove PAC deposition and fouling. PAC improves the effluent quality by adsorbing humic acid-like substances, and the energy consumption of GAC fluidization is lower compared to conventional fouling control methods in UF. This integrated GAC-PAC-UF process is technically feasible and economically viable, potentially achieving high permeate quality and reducing membrane fouling.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Engineering, Environmental
Phuoc-Dan Nguyen, Thi-Minh-Tam Le, Thi-Kim-Quyen Vo, Phuong-Thao Nguyen, Thi-Dieu-Hien Vo, Bao-Trong Dang, Nguyen-Thanh Son, Dinh Duc Nguyen, Xuan-Thanh Bui
Summary: The study investigated the combination of submerged membrane filtration and powdered activated carbon for nonylphenol ethoxylates removal, showing that the best removal efficiency was achieved under specific conditions. Removal efficiency varied over time, with a majority of organic carbon adsorbed into activated carbon.
WATER SCIENCE AND TECHNOLOGY
(2021)
Article
Engineering, Environmental
Salma Ebrahimzadeh, Bas Wols, Arianna Azzellino, Franca Kramer, Jan Peter van Der Hoek
Summary: Powdered activated carbon (PAC) is a promising technology for removing organic micropollutants (OMPs) in water treatment plants, especially when combined with rapid sand filters (RSFs). However, the mechanism of OMPs removal by the combination of PAC and RSF is not fully understood.
JOURNAL OF WATER PROCESS ENGINEERING
(2022)
Article
Engineering, Environmental
Christoph Schwaller, Grit Hoffmann, Christian X. Hiller, Brigitte Helmreich, Jorg E. Drewes
Summary: Hybrid membrane processes involving inline dosing of PAC have shown potential for TOrC abatement, with the addition of PACl coagulant helping to reduce transmembrane pressure buildup. Precoating UF with PACl and using continuous inline dosing of PAC results in good TOrC removal and reduced membrane fouling.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Engineering, Chemical
Chengcheng Li, Corinne Cabassud, Christelle Guigui
JOURNAL OF MEMBRANE SCIENCE
(2015)
Article
Engineering, Environmental
Chengcheng Li, Corinne Cabassud, Bernard Reboul, Christelle Guigui
Article
Engineering, Chemical
Mathias Monnot, Stephanie Laborie, Corinne Cabassud
Article
Engineering, Chemical
Mathias Monnot, Stephanie Laborie, Corinne Cabassud
DESALINATION AND WATER TREATMENT
(2016)
Article
Engineering, Chemical
Thanh Duong Dao, Stephanie Laborie, Corinne Cabassud
SEPARATION AND PURIFICATION TECHNOLOGY
(2016)
Article
Engineering, Chemical
Mathias Monnot, German Dario Martinez Carvajal, Stephanie Laborie, Corinne Cabassud, Remi Lebrun
Article
Engineering, Chemical
Paul Jacob, Stephanie Laborie, Corinne Cabassud
Review
Engineering, Chemical
Chengcheng Li, Corinne Cabassud, Christelle Guigui
DESALINATION AND WATER TREATMENT
(2015)
Article
Engineering, Chemical
Qiuming Ma, Aras Ahmadi, Corinne Cabassud
JOURNAL OF MEMBRANE SCIENCE
(2018)
Article
Engineering, Chemical
Paul Jacob, Tianyi Zhang, Stephanie Laborie, Corinne Cabassud
Article
Engineering, Chemical
Qiuming Ma, Aras Ahmadi, Corinne Cabassud
Article
Engineering, Chemical
Paul Jacob, Baptiste Dejean, Stephanie Laborie, Corinne Cabassud
JOURNAL OF MEMBRANE SCIENCE
(2020)
Article
Chemistry, Multidisciplinary
Nicolas Dietrich, Kalyani Kentheswaran, Aras Ahmadi, Johanne Teychene, Yolaine Bessiere, Sandrine Alfenore, Stephanie Laborie, Dominique Bastoul, Karine Loubiere, Christelle Guigui, Mathieu Sperandio, Ligia Barna, Etienne Paul, Corinne Cabassud, Alain Line, Gilles Hebrard
JOURNAL OF CHEMICAL EDUCATION
(2020)
Article
Engineering, Chemical
Qiuming Ma, Aras Ahmadi, Corinne Cabassud
Summary: This article models and studies an intensified desalination module that integrates membrane distillation (MD) and solar flat-plate collector (FPC) into the same equipment. The study compares the performance of direct contact MD (DCMD) and vacuum MD (VMD) modules in terms of water production and electricity consumption. The results show significant differences in performance between the two desalination devices, with production limited by incoming solar energy.
Article
Energy & Fuels
Mathias Monnot, Hoa Thi Khanh Nguyen, Stephanie Laborie, Corinne Cabassud
CHEMICAL ENGINEERING AND PROCESSING-PROCESS INTENSIFICATION
(2017)
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.