Article
Multidisciplinary Sciences
Dong Xiao, Lu Huang, Mohamed Keita, Hailun He, Dayong Chen, Jin Li
Summary: The CC30A CH4-CO2 combined analyzer with an infrared gas sensor as the core detection device can be widely used for online gas component analysis. A model for calculating effective values was designed using dimensionality reduction of dynamic data, improving efficiency and reducing the size of data analysis windows.
Article
Environmental Sciences
Yaohong Ma, Leilei Xiao, Yunwei Wei, P. Senthil Kumar, Yang Tan, Yiwei Li, Hengchang Zang
Summary: A novel voltammetric pH sensor based on rGO was designed in this study, which can rapidly read pH values in the range of 4.0-9.0 within 15 seconds, and was successfully applied for pH monitoring in MFC.
Article
Biotechnology & Applied Microbiology
Bruna Sampaio de Mello, Brenda Clara Gomes Rodrigues, Arnaldo Sarti
Summary: The study compared the use of UASB and ABR reactors for anaerobic digestion of soybean molasses under similar loading conditions, showing that high-rate anaerobic configurations can effectively degrade soybean molasses.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2021)
Article
Engineering, Environmental
Yeray Asensio, Maria Llorente, Patricia Fernandez, Sara Tejedor-Sanz, Juan Manuel Ortiz, Juan Francisco Ciriza, Victor Monsalvo, Frank Rogalla, Abraham Esteve-Nunez
Summary: The study evaluated the resilience capacity of a novel microbial electrochemical fluidized bed reactor (ME-FBR) in treating real brewery wastewater, outperforming traditional anaerobic fluidized bed reactor (AFBR) in various stress tests such as pollutant overloading, active biocide presence, long starvation periods, and low temperature operation. The ME-FBR showed better performance in COD removal rate, total nitrogen removal rate, and bioenergy recovery, highlighting its potential for industrial wastewater treatment.
CHEMICAL ENGINEERING JOURNAL
(2021)
Review
Engineering, Environmental
Camila D. Bastiani, David Kennedy, Anthony Reynolds
Summary: Anaerobic digestion processes can generate renewable energy in the form of biogas while treating organic wastewater. The hydrodynamic behavior in high-rate reactors such as UASB, EGSB, and IC reactors depends on the interactions between wastewater, biogas, and biomass granules. Computational fluid dynamics (CFD) has been used to study and model the hydrodynamic behavior in these reactors. This review critically analyzes the use of CFD in modeling anaerobic granular sludge reactors, discussing modeling aspects, model validations, and future perspectives.
Review
Engineering, Environmental
Yasmani Alba Reyes, Ernesto L. Barrera, Ke-ke Cheng
Summary: The global production of chicken meat leads to increased manure generation and environmental issues. Anaerobic digestion and pretreatments like leaching process and high-rate anaerobic reactors present potential solutions for biogas production to tackle these challenges, offering a technological simplicity and economic benefits for improving the environment and diversifying energy sources globally.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Agricultural Engineering
Nathan Innard, James P. J. Chong
Summary: Mixed anaerobic microbial communities play a key role in valorizing waste biomass through anaerobic digestion, and are important in soil and animal microbiomes. Understanding interactions between individual species within these communities is crucial for improving the performance and potential applications of green technology. The challenges associated with assessing the status of anaerobic microbial communities, incorporating measurements into control philosophies, and enhancing their potential to produce higher value products from waste materials are discussed.
BIORESOURCE TECHNOLOGY
(2022)
Article
Agricultural Engineering
Monika Yadav, Vivekanand Vivekanand
Summary: In this study, chitinolytic bacteria were used for bioaugmentation of fungal pretreated agricultural residues to enhance biogas production. Batch and continuous experiments showed that the addition of chitinolytic bacteria to wheat and pearl millet straw pretreated with Chaetomium globosporum resulted in increased biogas yield. Microbial community analysis revealed higher abundance of methanogens in reactors running with pretreated wheat straw, mainly consisting of Firmicutes, Bacteroidetes, Proteobacteria phyla.
BIORESOURCE TECHNOLOGY
(2021)
Article
Environmental Sciences
Vivian de Oliveira Lima, Valciney Gomes de Barros, Rose Maria Duda, Roberto Alves de Oliveira
Summary: Further studies are needed to improve the stability and efficiency of methane production from vinasse. Anaerobic digestion with one or more wastes and the addition of micronutrients, especially iron, are attractive operational strategies for this purpose. The performance of two treatment systems, consisting of UASB reactors operated under mesophilic and thermophilic temperature conditions, was evaluated for the anaerobic digestion of vinasse. The addition of water treatment plant (WTP) sludge in ADVS promoted the recovery of the reactors and increased methane production and stability, regardless of the system and proportion of WTP sludge used.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Agricultural Engineering
Miao Yan, Xinyu Zhu, Laura Treu, Giulia Ravenni, Stefano Campanaro, Estelle Maria Goonesekera, Rosa Ferrigno, Carsten S. Jacobsen, Athanasios Zervas, Irini Angelidaki, Ioannis A. Fotidis
Summary: Different strategies were attempted to recover ammonia-stressed AD reactors, with BioG, BioL, BW, and BS showing the most effective results in increasing methane production rates. BW may have acted as electrical conduits for Direct Electron Transfer, while BioG facilitated slow release of bioaugmentation inocula into the AD system. Microbial analysis showed increased abundance of Methanothermobacter thermautotrophicus with BioG, BioL, and BW, and selective raise of Methanosarcina thermophila with BS, leading to faster recovery of the AD process.
BIORESOURCE TECHNOLOGY
(2021)
Article
Engineering, Environmental
Charbel Abou Khalil, Mohamed T. Eraky, Sophia Ghanimeh
Summary: A novel localized mixing concept was tested in an Anaerobic Plug Flow Reactor treating Food Waste mixed with municipal Wastewater. The results showed that localized mixing reduced energy demand, increased system stability, and improved biogas production efficiency.
Article
Agricultural Engineering
Marinus J. Moerland, Laura Castanares Perez, Maria E. Ruiz Velasco Sobrino, Paraschos Chatzopoulos, Brendo Meulman, Vinnie de Wilde, Grietje Zeeman, Cees J. N. Buisman, Miriam H. A. van Eekert
Summary: Thermophilic and hyper-thermophilic anaerobic digestion are effective methods for treating concentrated black water, achieving efficient COD removal and methane production with a shorter start-up time, but may result in lower methane production rates at high temperatures.
BIORESOURCE TECHNOLOGY
(2021)
Article
Engineering, Environmental
Abhinav Choudhury, Stephanie Lansing
Summary: This study investigated the use of iron-impregnated biochar to increase H2S removal from biogas, showing significant improvements in H2S adsorption capacity. The iron-impregnated maple biochar had the highest saturation adsorption capacity for H2S, highlighting the potential of iron impregnation to enhance H2S removal in biogas scrubbing applications.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Green & Sustainable Science & Technology
Yeqing Li, Zhangmu Jing, Junting Pan, Gang Luo, Lu Feng, Hao Jiang, Hongjun Zhou, Quan Xu, Yanjuan Lu, Hongbin Liu
Summary: This study evaluated the microbial taxonomy, metabolism, function, and genetic differences in anaerobic digestion (AD) processes in biogas reactors. The results showed that temperature significantly affected the bacterial and archaeal community structure, while total inorganic carbon had a slight impact on the microbial structure. The findings deepen our understanding of the effect of temperature on AD microbial ecosystems and provide guidance for the construction and management of biogas plants.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2022)
Article
Engineering, Environmental
Denghui Wei, Xiaojing Zhang, Zhao Chen, Yu He, Jiaqian Dai, Shengnan Zhang
Summary: This study investigated the performance of three anaerobic digestion reactors for treating low-carbon wastewater. The results showed that UASB achieved the highest COD removal efficiency, and Methanothrix was identified as the dominant methane-producing microorganism.
WATER ENVIRONMENT RESEARCH
(2022)
Article
Engineering, Environmental
Xian-Zheng Zhu, Long-Fei Wang, Xin-Rong Pan, Feng Zhang, Min-Sheng Huang, Wen-Wei Li, Hou-Qi Liu
Summary: This study investigated the feasibility of using a forward osmosis (FO) dewatering process to selectively separate volatile fatty acids (VFA), ammonium, and phosphate from anaerobic acidogenic fermentation. The results showed that the rejection rate of VFA was less than 20% under acidic conditions, but significantly increased to 90% at neutral pH. The transfer of ammonium was greatly influenced by feed solution pH, while the rejection of phosphate was less sensitive to pH variations. The increase in water flux and membrane orientation also affected the separation of nutrients in the FO process.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Xiang Xiao, Chang-Xing Li, Jie-Ru Peng, Yang-Yang Fan, Wen-Wei Li
Summary: This study reveals the electron transfer mechanism of Shewanella oneidensis MR-1 exoelectrogens, and finds that the contribution of the CymA pathway is positively correlated with EET rate. These findings provide a new perspective for understanding bacteria-environment interactions and may inspire the discovery of new EET proteins and the development of more environmentally-robust biotechnologies.
CHEMICAL ENGINEERING JOURNAL
(2023)
Review
Engineering, Environmental
Zhongjuan Wang, Ye Du, Peng Zhou, Zhaokun Xiong, Chuanshu He, Yang Liu, Heng Zhang, Gang Yao, Bo Lai
Summary: Low Fe(II) generation is the main limitation for Fenton process, and providing electrons is the solution to promote Fe(III) reduction. This study systematically reviewed the strategies for enhancing Fe(III)/Fe(II) cycle based on electron donors, which can be classified into five categories: e-PF, e-EF, e-Re, e-Ox, and e-TC. The principles and mechanisms of each enhanced Fenton process were clarified, and the role of chelate agents and carbon-based materials were discussed. Among them, e-Re showed the best performance in pollutant degradation, making it the most promising approach. The development of reductants for future practical application is necessary.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Shuo Cui, Yang Si, Xian-Zhong Fu, Hui-Hui Li, Xue-Meng Wang, Wen-Zheng Du, Lang Teng, Ru-Li He, Hou-Qi Liu, Ruquan Ye, Wen-Wei Li
Summary: This study presents a self-assembled, intracellularly-photosensitized bio-hybrid system combining heterotrophic denitrifiers and biogenic quantum dots to enhance photo-electrons utilization in wastewater denitrification. The bio-hybrid exhibited significantly improved nitrate removal efficiency compared to bare cells and physically-mixed cells. It also stimulated the expression of key denitrifying enzymes and showed good performance in treating various real wastewaters.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Multidisciplinary Sciences
Wen-Wei Li, Xin Hou, Qing-Wen Wang
Summary: This paper addresses the classification problem of permutation matrices and the importance of permutation similarity relations in investigating symmetric matrix equations. Three problems are solved: the canonical form of a permutation similarity class, the standard form of arbitrary permutation matrix, and finding the permutation matrix T such that T(-1 )AT is in canonical form for any permutation matrix A. The paper also demonstrates the decomposition theorem of permutation matrices and the factorization theorem of both permutation matrices and monomial matrices.
Article
Engineering, Environmental
Jing Wu, Jun-Hua Zhou, Dong-Feng Liu, Jie Wu, Ru-Li He, Zhou-Hua Cheng, Hui-Hui Li, Wen-Wei Li
Summary: Previous studies focused on direct interactions of plastics with microorganisms, but ignored their ecotoxicity effects on the dissemination of antibiotic resistance genes (ARGs). This study reveals that environmentally relevant concentrations of phthalates (PAEs) significantly enhance the transfer of ARGs among environmental microorganisms. The interaction between PAEs and cell membrane phospholipids lowers membrane fluidity and increases permeability, facilitating gene transfer. Increased levels of reactive oxygen species and overexpression of conjugation-associated genes under PAE stress also contribute to enhanced gene transfer. This study provides important insights into the environmental risks of plastics and the control of ARG spreading.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Engineering, Environmental
Junjie You, Junyi Li, Heng Zhang, Mengfan Luo, Bo Xing, Yi Ren, Yang Liu, Zhaokun Xiong, Chuanshu He, Bo Lai
Summary: In this study, a g-C3N4 supported NiCx nanoclusters catalyst (NiCx-CN) was developed and its capability in activating peroxymonosulfate (PMS) was investigated. The mechanism investigation revealed that singlet oxygen (1O2) formed during the catalytic process had limited contribution to BPA elimination. Interestingly, high-valent nickel-oxo species (Ni&+=O) generated after the interaction of NiCx-CN and PMS were identified as the dominant reactive oxygen species (ROS). The prepared NiCx-CN also exhibited excellent resistance to interference from inorganic anions. Three BPA degradation routes were proposed based on the transformation intermediates. This study provides a new approach for the efficient degradation of organic pollutants using heterogeneous Ni-based catalysts through PMS activation via a nonradical mechanism.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Engineering, Environmental
Xian-Zhong Fu, Jie Wu, Jie Li, Jian Ding, Shuo Cui, Xue-Meng Wang, Yun-Jie Wang, Hou-Qi Liu, Xin Deng, Dong-Feng Liu, Wen-Wei Li
Summary: In this study, a pH-regulation strategy was used to enhance bio-FeS synthesis and improve the activity and stability of bio-hybrids for the treatment of high-concentration chromium-containing wastewater. The findings provide new insights into the environmental-responses of bio-hybrid self-assembly process and have important implications for optimized application of bio-hybrids in wastewater treatment and environmental remediation.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Engineering, Environmental
Xianhu Long, Hongle Shi, Rongfu Huang, Lingyun Gu, Yang Liu, Chuan-shu He, Ye Du, Zhaokun Xiong, Wen Liu, Bo Lai
Summary: In this study, sustainable Fe(III)/Fe(II) cycles in different inorganic peroxides activation systems were accelerated by using electro-catalysis (EC) as the electron donor. The electro-cocatalytic Fenton-like systems exhibited excellent degradation efficiency of sulfamethoxazole (SMX). Various reactive oxygen species (ROS) including hydroxyl radical ((OH)-O-center dot), singlet oxygen (O-1(2)), and sulfate radical (SO4 center dot-) were produced in EC/Fe(III)/PMS system, contributing to 38%, 37%, and 24% respectively. The dominant ROS in EC/Fe(III)/ PDS and EC/Fe(III)/HP processes was (OH)-O-center dot. The study provides a strong basis for constructing suitable systems to achieve different treatment requirements.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Agricultural Engineering
Jialing Ni, Jiayuan Ji, Yu-You Li, Kengo Kubota
Summary: An anaerobic membrane bioreactor (AnMBR) was used to treat domestic sewage at 15 degrees C under different hydraulic retention time (HRT) conditions (6, 12, 16, and 24 h). The viability of microbial community in anaerobic digestion was assessed using Propidium monoazide (PMA)-PCR, which targeted microorganisms with intact cell membranes. The study found that a 6-hour HRT resulted in poor treatment performance, with low chemical oxygen demand removal efficiency and high mean trans-membrane pressure and flux. PMA-PCR combined with next-generation sequencing provided better identification of microbial changes compared to conventional 16S rRNA gene sequencing.
BIORESOURCE TECHNOLOGY
(2023)
Review
Engineering, Chemical
Yu-Dan Dong, Yang Shi, Yong-Li He, Shu-Run Yang, Si-Ying Yu, Zhaokun Xiong, Heng Zhang, Gang Yao, Chuan-Shu He, Bo Lai
Summary: With the development of industry and agriculture, environmental pollution and water quality deterioration have become increasingly serious, posing a threat to human health. Fe-Mn-based materials, which are nontoxic, low-cost, easy to prepare, and highly efficient, have been widely used for wastewater decontamination. This review summarizes the synthesis methods and application progress of Fe-Mn-based materials in various catalysis processes, highlighting their potential in environmental remediation.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Microbiology
Qi-Zhong Wu, Wei-Qiang Lin, Wen-Zheng Du, Jian-Yu Wu, Wen-Wei Li
Summary: This article presents the complete genome of Microbacterium proteolyticum ustc, a Gram-positive bacterium belonging to the Micrococcales order of the Actinomycetota phylum. It is resistant to high concentrations of heavy metals and plays a role in metal detoxification. The genome consists of one plasmid and one chromosome.
MICROBIOLOGY RESOURCE ANNOUNCEMENTS
(2023)
Article
Engineering, Environmental
Han Xi, Lujia Shi, Fan Wang, Jie-Jie Chen, Zhi-Yan Guo, Wen-Qi Xia, Yang Si, Jing-Hang Wu, Houqi Liu, Fei Chen, Wen-Wei Li
Summary: Two-dimensional metal oxide nanomaterials have abundant surface active sites for Fenton-like catalysis, but improving their performance is limited by a lack of knowledge on the material structure-activity relationships. This study explores the different catalytic behaviors of bismuth bromide (BiOBr) nanosheets on their (010) and (001) facets in nonradical Fenton-like oxidation of pollutants. The (010) facet shows stronger binding and electronic interaction with PMS, leading to the generation of singlet oxygen (O-1(2)), resulting in one-order-of-magnitude higher bisphenol A degradation kinetics and a 4-fold enhancement in intrinsic activity compared to the (001) facet.
ACS ES&T ENGINEERING
(2023)
Article
Engineering, Environmental
Zhenyu Wang, Yang Si, Yunjie Wang, Tian Liu, Miao Gao, Wenwei Li
Summary: In recent years, conductive membranes have been extensively studied for their unique antifouling mechanisms and regenerative properties. Current strategies focus on enhancing membrane conductivity, but the resulting antifouling performance enhancement is limited. In this study, a hierarchical-nanostructure membrane CNT-PANI-GQDs was constructed, demonstrating a capacitance-tuning strategy to enhance the membrane's antifouling performance. This work provides valuable references for designing electric antifouling membranes for water purification applications.
ACS ES&T ENGINEERING
(2023)
Article
Environmental Sciences
Cheng Yang, Wen Jie Du, Ru-Li He, Yi-Rong Hu, Houqi Liu, Tianyin Huang, Wen-Wei Li
Summary: This study used machine learning techniques to reveal the patterns of methane and nitrous oxide emissions from China's inland waters. The results showed significant seasonal variations in methane emissions, influenced by total nitrogen and chemical oxygen demand concentrations. Northern watersheds were identified as hotspots of methane emissions, while nitrous oxide had a lower contribution to total carbon emissions with smaller temporal and spatial variations. The research provides valuable insights for counting and controlling greenhouse gas emissions from environmental water bodies.
