Article
Biochemistry & Molecular Biology
Yael Gilboa, Yuval Alfiya, Sara Sabach, Eran Friedler, Yael Dubowski
Summary: This study investigated the feasibility of using vacuum-ultraviolet (VUV) radiation for advanced oxidation treatment to remove H2S from groundwater.
Article
Engineering, Environmental
Hang Li, Yanling Yang, Jiawei Ren, Zhiwei Zhou, Xing Li, Yuankun Liu, Jianyong Feng
Summary: This study investigated the use of a combined ozone and vacuum ultraviolet process to enhance the removal of organic contaminants in greywater. The results showed that the process was effective in removing bio-polymers and humic substances, but had limited effect on larger molecules.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Green & Sustainable Science & Technology
Wei Yang, Zhifei Dou, Yangxian Liu, Yongchun Zhao, Renkun Huang
Summary: Seaweed-based biochars derived from pyrolysis waste were utilized to reduce elemental mercury emissions. An environmentally-friendly UV/hydrogen peroxide oxidation modification method was used to enhance the adsorption of elemental mercury by seaweed-based biochars. The modified seaweed biochars exhibited improved mercury capture performance. This research provides new insights into the green modification of biochar and the development of clean mercury removal adsorbents.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Chemistry, Physical
Vittorio Zorzi, Andrea Bertini, Andrew Robertson, Annachiara Berardinelli, Leonardo Palmisano, Francesco Parrino
Summary: The accumulation of off-flavour compounds such as geosmin (GSM) and 2-methylisoborneol (MIB) in recirculating aquaculture system (RAS) threatens its popularity. Advanced oxidation processes (AOPs) have shown promise in controlling these off-flavours throughout the production cycle. This review highlights the current state of AOPs application to GSM and MIB degradation, emphasizing the advantages of promising coupled processes such as photocatalytic ozonation.
MOLECULAR CATALYSIS
(2023)
Article
Materials Science, Multidisciplinary
Yuanzheng Huang, Ying Jia, Xiaomeng Lv, Ruomeng Hou, ZhiYong Huang, Yongyong Zhang, Keke Shen, Guofeng Jin, Jun Su, Li'an Hou
Summary: The study demonstrated that mesoporous TiO2 combined with H2O2 can efficiently degrade UDMH under VUV irradiation. Addition of H2O2 significantly enhances the degradation efficiency through photoactivation and synergistic effects.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Agricultural Engineering
Ramsey Kropp, Steven T. Summerfelt, Kyle Woolever, Samuel A. Johnson, David W. Kapsos, Christopher Haughey, Terence P. Barry
Summary: This study aims to evaluate the effects of a novel advanced oxidation process on the removal of off-flavor chemicals in Atlantic salmon aquaculture. The results indicate that the technology can speed up the purging process and save water, leading to positive economic impacts for commercial operators.
AQUACULTURAL ENGINEERING
(2022)
Article
Engineering, Environmental
Zonghao Liu, Hao Lan, Yuan Wang, Jinsheng Zhang, Jun Qin, Ruixue Zhang, Nan Dong
Summary: The study investigated the enhanced degradation and mineralization of bisphenol A (BPA) in VUV/UV-activated persulfate process, which was found to be more effective compared to UV-activated PS process. At the optimal experimental conditions, the maximum degradation efficiency of BPA reached up to 92.2% within 2 minutes.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Environmental
Chuang Wang, Xiaohong Guan, Wenhao Wang, Zhiwei Zhao, Fuyi Cui, Wenxin Shi, Jing Zhang
Summary: The study showed that in the vacuum UV (VUV) and VUV/Fe2+ processes, H2O2 and HO center dot play important roles in drug degradation, and HO2 center dot was also generated. The energy consumption of VUV/Fe2+ was always lower than VUV, with an energy-saving rate of 37.12%.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Marine & Freshwater Biology
Marianna Correia Aragao, Kelly Cristina dos Reis, Maria Aparecida Melo Rocha, Dayvson de Oliveira Guedes, Eduardo Costa dos Santos, Jose Capelo-Neto
Summary: This study compared the effects of hydrogen peroxide (H2O2) on Dolichospermum circinale and Microcystis aeruginosa, finding that even a small concentration of H2O2 could completely remove D. circinale, while a higher concentration was needed for the latter. It was also observed that oxidative stress may increase the detection of microcystin when cyanobacterial cells are lysed.
AQUATIC TOXICOLOGY
(2021)
Article
Engineering, Environmental
Hawzhin Amanollahi, Gholamreza Moussavi, Stefanos Giannakis
Summary: By comparing different processes, it was found that the VUV/H2O2/PMS process showed the best performance in converting NH4+ to N-2, with high removal efficiency and N-2 selectivity. Operating under near neutral pH, it can rapidly and efficiently remove high concentrations of NH4+, making it a promising technique.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Review
Environmental Sciences
S. Mustapha, J. O. Tijani, M. M. Ndamitso, A. S. Abdulkareem, D. T. Shuaib, A. K. Mohammed
Summary: The exposure to geosmin and 2-methylisoborneol in water has negative impact on product reputation and customer distrust. Conventional treatment methods are ineffective in removing these compounds, while the combination of activated carbon and ozonation shows promise but with drawbacks. Advanced oxidation processes may offer a new approach to remove these compounds effectively.
ENVIRONMENTAL MONITORING AND ASSESSMENT
(2021)
Article
Engineering, Environmental
Allisson Barros de Souza, Joerg Mielcke, Izba Ali, Raf Dewil, Tom van de Goor, Deirdre Cabooter
Summary: This study examined the degradation of miconazole (MCZ) in water using ozone, photodegradation, and electrochemical processes. The results showed that MCZ can be efficiently removed by ozonation (98%) and electrochemical processes (94%). Matrix effects were observed in simulated wastewater, and the formation mechanism and ecological toxicity of degradation by-products were studied. Moreover, the automated online sampling technology provided a diagnostic tool for real-time process monitoring during water treatment.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Chemistry, Physical
Thallis M. Souza, Zuy M. Magriotis, Priscila F. Sales, Ricardo F. Resende, Andre L. Sales, Felipe M. Pinto, Adelir A. Saczk
Summary: In this study, a Cr2O3 catalyst was synthesized from sulfochromic residue (SCR) obtained during the analysis of soil organic matter. The catalytic performance of Cr2O3 was evaluated using methylene blue (MB) dye as a model molecule. The results showed that Cr2O3 exhibited high catalytic activity and could be reused effectively.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2022)
Review
Engineering, Environmental
Manoj P. Rayaroth, Charuvila T. Aravindakumar, Noor S. Shah, Grzegorz Boczkaj
Summary: This paper focuses on the formation of nitro-products in wastewater treatment processes and compares the mechanisms of various AOPs. Increased attention should be given to monitoring and minimizing the formation of nitro-products during oxidative degradation processes.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Chemical
Ming Su, Yiping Zhu, Tom Andersen, Xianyun Wang, Zhiyong Yu, Jinping Lu, Yichao Song, Tengxin Cao, Jianwei Yu, Yu Zhang, Min Yang
Summary: This study investigates the relationships between two filamentous cyanobacteria in a drinking water reservoir and finds that light is the major driving force responsible for the succession between these cyanobacteria. Subtle niche differentiation may play an important role in shaping the cyanobacterial assemblages, leading to MIB odor problems in drinking water reservoirs.
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.