Article
Agricultural Engineering
Wang Yan, Yun Chen, Nan Shen, Guoxiang Wang, Junfeng Wan, Jinjin Huang
Summary: The study found that increasing the pH from 8 to 11 during anaerobic fermentation of Al waste activated sludge led to significantly higher production and release of volatile fatty acids (VFAs) and phosphorus (P).
BIORESOURCE TECHNOLOGY
(2021)
Article
Green & Sustainable Science & Technology
Qizi Fu, Dongbo Wang, Xiaoming Li, Qi Yang, Qiuxiang Xu, Bing-Jie Ni, Qilin Wang, Xuran Liu
Summary: Hydrogen production from waste activated sludge is a promising technology to recover energy from wastewater treatment plants, but there are challenges such as low organics utilization and rapid hydrogen consumption. Further research and solutions are needed to address these challenges and make the technology more feasible.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2021)
Article
Engineering, Environmental
Xianli Yang, Jingnan Yang, Xuran Liu, Qing Wang, Dongke Liu, Dongbo Wang
Summary: The widespread use of pharmaceuticals has raised concerns about their potential environmental effects. Previous studies have shown that most of the pharmaceuticals investigated had harmful effects on wastewater or sludge treatment. However, this study found that carbamazepine at environmentally relevant levels increased hydrogen production from anaerobic fermentation of waste activated sludge.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Xue-Ting Wang, Lei Zhao, Chuan Chen, Ke-Yang Chen, Han Yang, Xi-Jun Xu, Xu Zhou, Wen-Zong Liu, De-Feng Xing, Nan-Qi Ren, Duu-Jong Lee
Summary: The application of 0.8 V voltage significantly enhanced methane productivity in both rWAS and hWAS in MEC-AD, with rWAS maintaining high efficiency even after voltage removal. Additionally, the microbial structure in rWAS persisted at a high level post-voltage supply removal, while the enhanced effect in hWAS weakened. This suggests that enriching functional microorganisms, especially fermentative bacteria and syntrophic acetogenic bacteria, can lead to efficient methane production in MEC-AD.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Environmental Sciences
Jingnan Yang, Abing Duan, Dongbo Wang, Xianli Yang, Xuran Liu, Guojing Yang, Qi Yang
Summary: Hydrogen production from waste-activated sludge anaerobic fermentation is an effective method of resource recovery. However, the presence of diclofenac, a widely used anti-inflammatory drug, inhibits hydrogen production by binding to the active sites of hydrogenase, which leads to the inhibition of acetogenesis and acidogenesis processes that are responsible for hydrogen production.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Environmental Sciences
Yun Wang, Wei Wei, Xiaohu Dai, Bing-Jie Ni
Summary: The study proposed a green method using corncob ash to enhance hydrogen production during anaerobic fermentation of waste activated sludge. Corncob ash dosage positively correlated with hydrogen production, reaching up to 46.8 +/- 1.0 mL/g VS. Mechanistic studies showed benefits in solubilization, hydrolysis, and acetogenesis processes.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
Xinlei Pan, Junfeng Li, Ruining He, Yu Tian, Heliang Pang
Summary: This study proposed a simplified operation mode, which improved anaerobic fermentation efficiency and organic matter recovery rate by shortening the CER residence time, reducing engineering costs and footprint.
Article
Environmental Sciences
Xinlei Pan, Junfeng Li, Ruining He, Yu Tian, Heliang Pang
Summary: By shortening the residence period of cation exchange resin (CER) to 1 day, higher sludge solubilization and hydrolysis rates can be achieved, leading to increased production of short-chain fatty acids (SCFAs). The modified operation pattern with shortened CER residence period (1 day) can achieve similar effects as the conventional operation pattern, while reducing CER usage, alleviating CER pollution and increasing operation convenience.
Article
Environmental Sciences
Xiaoying Zheng, Linghua Zhu, Zhi Xu, Mengmeng Yang, Xiaoyao Shao, Shanshan Yang, Huijie Zhang, Fan Wu, Zongshuo Han
Summary: The study found that in anaerobic fermentation of waste activated sludge, low concentrations of polystyrene can significantly increase the production of volatile fatty acids, while high concentrations of polystyrene can lead to decreased production of volatile fatty acids due to inactive microbial activities.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Chemistry, Multidisciplinary
Jiawei Hu, Zhuo Li, Wenquan Tao
Summary: This study reported a high-efficiency and low-cost sludge pretreatment method using calcium hypochlorite for promoting anaerobic fermentation performance. The method effectively enhanced hydrogen yield and improved the biodegradability of sludge organics.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2022)
Article
Agricultural Engineering
Zhang-Wei He, Hong-Yu Jin, Yong-Xiang Ren, Wen-Jing Yang, Cong-Cong Tang, Chun-Xue Yang, Ai-Juan Zhou, Wen-Zong Liu, Ai-Jie Wang
Summary: This study proposed a promising approach, stepwise alkaline treatment coupled with ammonia stripping, to enhance short-chain fatty acids (SCFAs) production from waste activated sludge (WAS) anaerobic digestion. The strategy not only increased SCFAs production significantly, but also achieved nitrogen and carbon recovery, offering solutions for the carbon-neutral operation of wastewater treatment plants.
BIORESOURCE TECHNOLOGY
(2021)
Article
Environmental Sciences
Jiawei Hu, Bing Guo, Zhuo Li, Zhigen Wu, Wenquan Tao
Summary: A novel high-efficiency technology combining freezing with potassium ferrate (PF) was reported for promoting hydrogen production in sludge anaerobic fermentation. The combined treatment showed positive synergetic effect on hydrogen production, enhancing the potential and rate of hydrogen production while accelerating sludge disintegration. Gene sequencing analysis revealed enrichment of hydrolytic and hydrogen generating bacteria in the combined pretreatment fermenter, with notable enhancement in dewatering performances of fermented sludge.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Green & Sustainable Science & Technology
Qinglian Wu, Heshan Zheng, Ying Chen, Min Liu, Xian Bao, Wanqian Guo
Summary: The study found that using alkylethoxyglucoside can significantly enhance the production of volatile fatty acids from waste activated sludge, and the degradation of AEG contributes to a certain extent to the total production, with AEG primarily promoting substrate hydrolysis and acidification by reducing surface charge.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Environmental Sciences
Xiang Zou, Junguo He, Heliang Pang, Pengfei Zhang, Xinlei Pan, Yijie Zhong, Shengye Duan, Xinxin Cui, Xiaodong Xin, Jie Zhang
Summary: The synergistic effect of protease and lysozyme on enhancing anaerobic fermentation efficiency and volatile fatty acids recovery was investigated. Asynchronous dosed enzyme cocktail pretreatment was proven to be a better strategy for solubilization and hydrolysis processes, leading to increased VFAs production.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Agricultural Engineering
Xiaodi Li, Bo Wang, Yuqing Ma, Tan Jiang, Yongzhen Peng
Summary: This study investigated the reduction of nitrate in waste activated sludge fermentation and found that nitrate promoted the release of organic matter in sludge and enhanced its biodegradability. The destruction of volatile suspended solids was increased significantly in the presence of nitrate. Nitrate reduction also promoted sludge hydrolysis and acetogenesis, but slightly inhibited acidogenesis. This study provides a feasible method to address the overabundance of waste activated sludge and the lack of carbon sources in the denitrification process.
BIORESOURCE TECHNOLOGY
(2023)
Article
Environmental Sciences
Ling Wang, Hongbo Liu, Wenduo Zhang, Tiantian Yu, Qiu Jin, Bo Fu, He Liu
Article
Biotechnology & Applied Microbiology
Lei Yu, Wenduo Zhang, He Liu, Ganghui Wang, Hongbo Liu
INTERNATIONAL BIODETERIORATION & BIODEGRADATION
(2018)
Article
Environmental Sciences
Hongbo Liu, Ling Wang, Bo Yin, Bo Fu, He Liu
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2018)
Article
Engineering, Environmental
Yan Zhang, Peng Han, He Liu, Lihui Zhang, Hongbo Liu, Bo Fu
WATER SCIENCE AND TECHNOLOGY
(2018)
Article
Agricultural Engineering
Yan Zhang, Lihui Zhang, He Liu, Linlin Gong, Qianqian Jiang, Hongbo Liu, Bo Fu
BIORESOURCE TECHNOLOGY
(2019)
Article
Environmental Sciences
Luyi Zou, Xiaoyue Zhang, Mingying Shao, Ruirui Sun, Yuting Zhu, Binbin Zou, Zhenxing Huang, He Liu, Yue Teng
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2019)
Article
Engineering, Environmental
Hongbo Liu, Ling Wang, Xuedong Zhang, Bo Fu, He Liu, Yajie Li, Xiaoyou Lu
JOURNAL OF HAZARDOUS MATERIALS
(2019)
Article
Agricultural Engineering
He Liu, Linlin Gong, Yan Zhang, Qianqian Jiang, Minhua Cui, Jie Zhang, Bo Fu, Hongbo Liu
BIORESOURCE TECHNOLOGY
(2019)
Article
Microbiology
Bo Fu, Xin Jin, Ralf Conrad, Hongbo Liu, He Liu
FRONTIERS IN MICROBIOLOGY
(2019)
Article
Environmental Sciences
Yan-Qin Yang, Min-Hua Cui, Yi-Gang Ren, Jian-Chao Guo, Zhi-Yong Zheng, He Liu
BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY
(2020)
Article
Environmental Sciences
Yan-Qin Yang, Min-Hua Cui, Jian-Chao Guo, Jing-Jing Du, Zhi-Yong Zheng, He Liu
Summary: Co-pyrolysis of rice husk and sewage sludge resulted in biochars with lower yield but higher carbon content, and reduced relative contents of lead and cadmium. This process transformed bioavailable heavy metals into stable speciation, reducing the environmental risk assessment codes of lead and cadmium by 1-2 grades. Co-pyrolysis technology provides a feasible method for the safe disposal of heavy metal-contaminated sewage sludge.
ENVIRONMENTAL TECHNOLOGY
(2021)
Article
Biotechnology & Applied Microbiology
Wenhao Liu, Zhiyong Zheng, Fuxin Sun, He Liu, Min-Hua Cui, Yuan Ye, Yan Zhang
BIOCHEMICAL ENGINEERING JOURNAL
(2020)
Article
Engineering, Chemical
Xiang Li, Yuqi Chen, Zhiyong Zheng, Minjie Gao, Zifan Wang, Kaining Zhang, He Liu, Xiaobei Zhan
CHEMICAL ENGINEERING RESEARCH & DESIGN
(2020)
Article
Green & Sustainable Science & Technology
Wenhao Liu, Zhiyong Zheng, Fuxin Sun, Maodong Miao, Min-Hua Cui, Hongbo Liu, Huimin Zhang, Cheng Zhang, Zhijie Hu, He Liu
JOURNAL OF CLEANER PRODUCTION
(2020)
Article
Engineering, Environmental
Yan Zhang, Qianqian Jiang, Linlin Gong, He Liu, Minhua Cui, Jie Zhang
JOURNAL OF HAZARDOUS MATERIALS
(2020)
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.