Article
Biotechnology & Applied Microbiology
Eva Maria Prem, Mira Mutschlechner, Blaz Stres, Paul Illmer, Andreas Otto Wagner
Summary: Lignin intermediates may hinder anaerobic mineralisation, with phenyl acids serving as early indicators. The length and structure of side chains influence the methanogenic system, while specific microbial genera are associated with phenyl acid formation.
BIOTECHNOLOGY FOR BIOFUELS
(2021)
Article
Agricultural Engineering
Shiva Khoei, Abigail Stokes, Brandon Kieft, Paul Kadota, Steven J. Hallam, Cigdem Eskicioglu
Summary: The addition of powdered biochar significantly increased methane production, shortened lag phase, and altered microbial community structure in thermophilic anaerobic digestion.
BIORESOURCE TECHNOLOGY
(2021)
Article
Environmental Sciences
Jiadong Yu, Lixin Zhao, Zonglu Yao, Jing Feng, Xufeng Yuan, Hongliang Wang, Yi Liang, Jiankun Chen, Yizhuo Du, Ruixia Shen
Summary: The study investigates the synergistic characteristics of abiotic and biotic transformation to improve the methane production efficiency in thermophilic and mesophilic sequencing batch dry anaerobic digestion (SBDAD). A pilot scale experiment using corn straw and cow dung as lignocellulosic material shows significant differences in biogas production and VFA concentration and composition. The combination of first-order hydrolysis and a modified Gompertz model increases cellulose and hemicellulose conversion efficiency by 112.03% and 90.09%, respectively, at thermophilic temperatures. The microbial community exhibits different functional network relationships under the two temperature conditions. Simulation of SBD-AD engineering shows reduced heat energy consumption and increased net energy production at thermophilic temperatures.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Biotechnology & Applied Microbiology
Feng Zhen, Xinjian Luo, Tao Xing, Yongming Sun, Xiaoying Kong, Wenzhe Li
Summary: The study showed that micmaembic pretreatment (MP) can improve the stability and biogas production performance of thermophilic dry anaerobic digestion (AD). Proper MP enhanced methane production, reduced environmental risks, promoted substrate hydrolysis and improved AD performance by accelerating the growth of hydrogenotrophic methanogens.
BIOCHEMICAL ENGINEERING JOURNAL
(2021)
Article
Energy & Fuels
Shiyou Pan, Qiangqiang Liu, Chuan Wen, Zhenchong Li, Liqin Du, Yutuo Wei
Summary: This study investigated microbial dynamics during a 20-day anaerobic digestion of rice straw at 35 degrees C, revealing consistent trends in biogas and methane production with distinct stages. The dominant microorganisms varied at different stages, with Bacteroides and Clostridium_sensu_stricto_1 being dominant early on, and Methanosarcina becoming significantly more abundant at the peak methane production stage. The results provide detailed insights into the fluctuating and constant digestion process, which can benefit industrial applications of anaerobic digestion of rice straw.
BIOENERGY RESEARCH
(2021)
Article
Green & Sustainable Science & Technology
Gloria Misson, Matia Mainardis, Fabio Marroni, Alessandro Peressotti, Daniele Goi
Summary: This study analyzed methane emissions from beach-cast seagrass, finding that seagrass can have a high methane potential under specific temperature and salinity conditions, and the composition of microbial communities is also influenced by environmental factors.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Agricultural Engineering
Dawei Yu, Qingqing Zhang, Bram De Jaegher, Jibao Liu, Qianwen Sui, Xiang Zheng, Yuansong Wei
Summary: The study found that in anaerobic digestion under ammonia stress, proton pump inhibitors can mitigate ammonia accumulation by inhibiting beta-oxidation of fatty acids and stimulating syntrophic acetate oxidation, thereby enhancing methane production.
BIORESOURCE TECHNOLOGY
(2021)
Article
Agricultural Engineering
Elisa Clagnan, Mirko Cucina, Raveena Vilas Sajgule, Patrizia De Nisi, Fabrizio Adani
Summary: This paper reports a novel study on the microbial acclimatization for anaerobic degradation and conversion of bioplastics into biogas. The results showed that microbial acclimatization can enhance the biogas production from starch-based and polyactic-acid bioplastics. This study highlights the importance of microbial acclimatization for the circularity of bioplastics.
BIORESOURCE TECHNOLOGY
(2023)
Article
Engineering, Environmental
Zhen Zhou, Qiang Ming, Ying An, Danian Ruan, Guang Chen, Haijuan Wei, Mengyu Wang, Zhichao Wu
Summary: The study found that in-situ microaeration can increase biogas production and VS removal rate of sludge through mechanisms such as stimulating hydrolytic enzyme activity, enlarging sludge particle size, and improving sludge dewaterability.
JOURNAL OF WATER PROCESS ENGINEERING
(2021)
Article
Biotechnology & Applied Microbiology
Tianjie Ao, Zhijie Xie, Pan Zhou, Xiaofeng Liu, Liping Wan, Dong Li
Summary: The study found differences in the microbial community composition and methane production mechanism between mesophilic and thermophilic digestion of vegetable waste. High concentrations of volatile fatty acids led to severe inhibition of methanogens, with mesophilic digestion exhibiting higher microbial diversity and richness than thermophilic digestion.
BIOPROCESS AND BIOSYSTEMS ENGINEERING
(2021)
Article
Agricultural Engineering
Yusron Sugiarto, Nimas Mayang S. Sunyoto, Mingming Zhu, Isabelle Jones, Dongke Zhang
Summary: Compared to the control without biochar addition, the addition of raw biochar significantly increased YM by 46.9% and RM by 43.0%, while leached biochar only increased the YM by 33.2% and RM by 18.2%, respectively. The Fe-containing minerals in biochar were found to enhance VFA degradation and increase population of Clostridia and Methanosaeta, improving the CH4 production.
BIORESOURCE TECHNOLOGY
(2021)
Article
Environmental Sciences
Wenqian Li, Jianglin Chen, Lina Pang, Yuanyuan Lu, Ping Yang
Summary: This study investigated the effects of micron zero valent iron (mZVI) on the performance and microbial traits in thermophilic anaerobic digestion (TAD) of waste activated sludge. The results showed that methane production and consumption of volatile fatty acids were significantly increased by mZVI at different dosages. The microbial community stabilized after day 18, and different dosages of mZVI induced shifts in the functional community of archaea involved in TAD. Furthermore, the physicochemical properties and certain key factors were found to have a significant influence on the bacterial and archaeal abundance and metabolic pathways. This study provides new insights into the potential application of mZVI in solid waste treatment.
ENVIRONMENTAL RESEARCH
(2023)
Article
Biotechnology & Applied Microbiology
Eva Maria Prem, Rudolf Markt, Mathias Wunderer, Andreas Otto Wagner
Summary: Efficient biogas production from organic waste is crucial for achieving carbon neutrality in the future. This study investigated the further digestion of thermophilic press water from a municipal solid waste digester using a combination of thermo- and mesophilic posttreatment methods. The results demonstrated that the press water still had significant biogas potential, particularly during the high season in central Europe. While there was an initial decrease in biogas production during the mesophilic posttreatment, the overall losses could be compensated, resulting in no significant difference in biogas production between the thermo- and mesophilic approaches. These findings suggest that the change in microbial community and the enhanced degradation of problematic intermediates, such as valerate, in the mesophilic reactor contribute to this compensatory effect.
BIOTECHNOLOGY AND BIOENGINEERING
(2023)
Article
Agricultural Engineering
Aijun Zhu, Yu Qin, Jing Wu, Min Ye, Yu-You Li
Summary: The optimal performance was achieved in the thermophilic anaerobic co-digestion process of sewage sludge with paper waste at a ratio of 4:6, where the COD removal efficiency and biogas production increased significantly. The addition of paper waste had a positive impact on the competition between carbohydrate and protein degradation, with cellulolytic bacteria becoming the predominant group.
BIORESOURCE TECHNOLOGY
(2021)
Article
Engineering, Environmental
Qi Lu, Dandan He, Xuran Liu, Mingting Du, Qing Xu, Dongbo Wang
Summary: In this study, the effects of BmimCl on glucose anaerobic digestion were investigated, and it was found that BmimCl inhibited methane production and the biotransformation of butyrate, hydrogen, and acetate. The toxicological mechanism showed that BmimCl destroyed the conformational structure of extracellular polymeric substances, leading to microbial cell inactivation. Molecular ecological network analysis revealed the reduced stability of the microbial community in the presence of BmimCl.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Agricultural Engineering
Kyungjin Cho, Yeongmi Jeong, Kyu Won Seo, Seockheon Lee, Adam L. Smith, Seung Gu Shin, Si-Kyung Cho, Chanhyuk Park
BIORESOURCE TECHNOLOGY
(2018)
Review
Agricultural Engineering
Yamrot M. Amha, Muhammad Zohaib Anwar, Andrew Brower, Carsten S. Jacobsen, Lauren B. Stadler, Tara M. Webster, Adam L. Smith
BIORESOURCE TECHNOLOGY
(2018)
Article
Engineering, Chemical
S. Gee, B. Johnson, A. L. Smith
JOURNAL OF MEMBRANE SCIENCE
(2018)
Article
Engineering, Environmental
Siming Chen, Adam L. Smith
ENVIRONMENTAL SCIENCE-WATER RESEARCH & TECHNOLOGY
(2018)
Review
Engineering, Environmental
Siming Chen, Moustapha Harb, Pooja Sinha, Adam L. Smith
ENVIRONMENTAL SCIENCE-WATER RESEARCH & TECHNOLOGY
(2018)
Article
Engineering, Environmental
Ali Zarei-Baygi, Moustapha Harb, Phillip Wang, Lauren B. Stadler, Adam L. Smith
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2019)
Review
Biochemical Research Methods
Moustapha Harb, Esther Lout, Adam L. Smith, Lauren B. Stadler
CURRENT OPINION IN BIOTECHNOLOGY
(2019)
Article
Engineering, Environmental
Yamrot M. Amha, Michael Corbett, Adam L. Smith
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2019)
Article
Engineering, Environmental
Moustapha Harb, Phillip Wang, Ali Zarei-Baygt, Megan H. Plumlee, Adam L. Smith
ENVIRONMENTAL SCIENCE & TECHNOLOGY LETTERS
(2019)
Article
Engineering, Environmental
Siming Chen, Adam L. Smith
Review
Engineering, Environmental
Eric W. Rice, Phillip Wang, Adam L. Smith, Lauren B. Stadler
ENVIRONMENTAL SCIENCE & TECHNOLOGY LETTERS
(2020)
Editorial Material
Engineering, Environmental
Aaron Bivins, Devin North, Arslan Ahmad, Warish Ahmed, Eric Alm, Frederic Been, Prosun Bhattacharya, Lubertus Bijlsma, Alexandria B. Boehm, Joe Brown, Gianluigi Buttiglieri, Vincenza Calabro, Annalaura Carducci, Sara Castiglioni, Zeynep Cetecioglu Gurol, Sudip Chakraborty, Federico Costa, Stefano Curcio, Francis L. de los Reyes, Jeseth Delgado Vela, Kata Farkas, Xavier Fernandez-Casi, Charles Gerba, Daniel Gerrity, Rosina Girones, Raul Gonzalez, Eiji Haramoto, Angela Harris, Patricia A. Holden, Md. Tahmidul Islam, Davey L. Jones, Barbara Kasprzyk-Hordern, Masaaki Kitajima, Nadine Kotlarz, Manish Kumar, Keisuke Kuroda, Giuseppina La Rosa, Francesca Malpei, Mariana Mautus, Sandra L. McLellan, Gertjan Medema, John Scott Meschke, Jochen Mueller, Ryan J. Newton, David Nilsson, Rachel T. Noble, Alexander van Nuijs, Jordan Peccia, T. Alex Perkins, Amy J. Pickering, Joan Rose, Gloria Sanchez, Adam Smith, Lauren Stadler, Christine Stauber, Kevin Thomas, Tom van der Voorn, Krista Wigginton, Kevin Zhu, Kyle Bibby
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2020)
Article
Engineering, Environmental
Ali Zarei-Baygi, Phillip Wang, Moustapha Harb, Lauren B. Stadler, Adam L. Smith
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2020)
Article
Engineering, Environmental
Esther Ge Lou, Moustapha Harb, Adam L. Smith, Lauren B. Stadler
ENVIRONMENTAL SCIENCE-WATER RESEARCH & TECHNOLOGY
(2020)
Article
Engineering, Environmental
Moustapha Harb, Noel Ermer, Christelle BouNehme Sawaya, Adam L. Smith
ENVIRONMENTAL SCIENCE-WATER RESEARCH & TECHNOLOGY
(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.