Article
Engineering, Environmental
Anthony Heebner, Bassim Abbassi
Summary: This study evaluated a new combined treatment approach by combining ozonation and electrolysis for the mineralization of organic compounds in water. The results showed that the method was most effective for TOC removal in alkaline conditions and significantly enhanced performance compared to ozonation alone in acidic conditions. The initial pH had a more significant effect on TOC removal than current density, but both parameters were relevant. Under optimized conditions, 63% TOC removal was achieved.
JOURNAL OF WATER PROCESS ENGINEERING
(2022)
Article
Engineering, Environmental
Hazal Ozturk, Sibel Barisci, Ozge Turkay
Summary: The study investigated the degradation efficiency of different processes towards paracetamol, with E-peroxone process showing the highest efficiency. The degradation of PCT mainly occurs through hydroxyl radicals and molecular O-3. The EOX and GEF processes showed lower degradation efficiencies compared to E-peroxone process.
ENVIRONMENTAL ENGINEERING RESEARCH
(2021)
Article
Environmental Sciences
Yafang Shi, Chi Zhang, Jinbo Liu, Qingyang Dai, Yuanren Jiang, Mengning Xi, Hanzhong Jia
Summary: The study revealed the presence of different types of persistent free radicals in humic acid fractions with different molecular weight fractions, with lower molecular weight fractions having lower PFR concentrations compared to bulk HA and higher molecular weight fractions. In terms of redox capacity, higher molecular weight fractions exhibited greater reducing capacity, positively correlated with the content of PFRs and phenolic hydroxyl groups.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Environmental Sciences
Wen-Long Wang, Min-Yong Lee, Ye Du, Tian-Hui Zhou, Zheng-Wei Yang, Qian-Yuan Wu, Hong-Ying Hu
Summary: Pre-ozonation can effectively reduce the formation of disinfection byproducts (DBPs) during subsequent chlorination by oxidizing electron-donating-moieties (EDMs) and UVA in natural organic matter, especially in high and medium molecular weight fractions. The study found that pre-ozonation inhibited the formation of representative DBPs, total organic chloride, and cytotoxicity, but may have promoted the formation of carbonyl-DBPs. Additionally, EDM abatement was found to better reflect the formation of total organic chlorine and cytotoxicity, indicating a complex relationship between EDM removal and the speciation of DBPs.
ENVIRONMENT INTERNATIONAL
(2021)
Article
Engineering, Environmental
Sultan K. Alharbi, Ashley J. Ansari, Long D. Nghiem, William E. Price
Summary: This study investigated the structural elucidation of transformation products (TPs) formed during ozone and UV treatments of diclofenac (DCF) in wastewater. The results showed that TPs formed during ozonation were characterized by the addition of hydroxyl groups and changes in double bond equivalent, while TPs formed during UV photolysis involved removal of chlorine atoms and ring closure followed by dimerization. The study also proposed possible reaction pathways for the identified DCF TPs.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2022)
Article
Engineering, Environmental
Katrin Schulz, Laurel K. ThomasArrigo, Ralf Kaegi, Ruben Kretzschmar
Summary: This study investigates the effect and fate of silicate during Fe mineral recrystallization and transformation. The results show that the solid phase Si/Fe ratio strongly influences the extent of ferrihydrite transformation, while the Fe(II)/Fe(III) ratio has a minor effect. Silicate increases the thickness of lepidocrocite crystallites and inhibits the transformation of lepidocrocite when adsorbed. Silicate is an important factor to consider in understanding Fe mineral dynamics in reducing soil conditions.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Soil Science
Oladapo P. Olayemi, Cynthia M. Kallenbach, Matthew D. Wallenstein
Summary: Soil organic matter (SOM) plays a crucial role in soil productivity, but there is still limited understanding on how different SOM fractions respond to priming and in which direction.
SOIL BIOLOGY & BIOCHEMISTRY
(2022)
Article
Agriculture, Multidisciplinary
Mengmeng Wang, Bowen Yang, Ping Shao, Fan Jie, Xuan Yang, Baiyi Lu
Summary: Dietary intake of plant sterols reduces cholesterol levels in serum and liver, but increases cholesterol levels in the brain, while intake of cholesterol oxidation products increases levels of all COPs in serum.
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Anika Salanti, Marco Orlandi, Heiko Lange, Federica Ferruti, Luca Zoia
Summary: An analytical approach based on phenol fluorescence labeling was used to understand the phenolic group distribution in different lignin specimens. The method involved selective derivatization of lignin phenolic functionalities and analysis using gel permeation chromatography. The results provided insights into the distribution of phenolic groups in different lignins.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2022)
Article
Materials Science, Multidisciplinary
Junhua Jiang, John Stempien, Yaqiao Wu
Summary: The influence of three fission products Sr, Eu, and I on the oxidation of IG-110 nuclear graphite was studied. The introduction of these three compounds significantly decreased the onset temperature for the oxidation of graphite, with NaI being the most active compound.
JOURNAL OF NUCLEAR MATERIALS
(2023)
Article
Engineering, Environmental
Hong-Rui Chen, Qian Li, Xiao-Juan Zhao, Duo-Rui Zhang, Eva Pakostova
Summary: This study aims to enhance the dissolution of arsenopyrite through a sequential two-step process comprising aerobic bio-oxidation and reductive dissolution under anaerobic conditions, catalyzed by Acidithiobacillus (At.) thiooxidans DSM 504. During aerobic bio-oxidation, a double passivation layer forms on the mineral surface, inhibiting further bio-oxidation, while a more permeable oxidation layer is formed in acid mine drainage. The proposed two-step bio-oxidation process has the potential to contribute to improved extractive technologies and avoid the accumulation of unstable As pollution sources.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Environmental Sciences
Azar Fattahi, Maricor J. Arlos, Leslie M. Bragg, Sarah Kowalczyk, Robert Liang, Olivia M. Schneider, Norman Zhou, Mark R. Servos
Summary: This study compared the photocatalytic efficiency of commercially available titanium dioxide nanoparticles and titanium dioxide nanoparticles modified by silver nanoparticles in degrading 23 target PPCPs. The results indicate that Ag-P25 is a promising photocatalyst for degrading persistent substances such as PPCPs and NOM, even in complex water matrices.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Engineering, Environmental
Tiantian Chen, Zhenyang Yu, Ting Xu, Rong Xiao, Wenhai Chu, Daqiang Yin
Summary: The formation and degradation mechanisms of CX3R-type OBPs during cobalt catalyzed peroxymonosulfate (Co2+/PMS) oxidation were investigated, highlighting the significant role of Co3+ in OBP formation and toxicity values, and the importance of SO4 center dot- in OBP degradation and conversion.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Environmental Sciences
Mladen Popov, Marijana Kragulj Isakovski, Jelena Molnar Jazic, Aleksandra Tubic, Malcolm Watson, Marina Sciban, Jasmina Agbaba
Summary: This study investigates the impact of ozone dose and GAC filtration on the formation of oxidation by-products and chlorination by-products in a full-scale drinking water treatment plant utilizing Danube river bank filtration. It was found that specific ozone doses are needed for different processes, and seasonal variations have minimal effects on the quality of treated water and the content of organic matter in raw water.
ENVIRONMENTAL TECHNOLOGY
(2021)
Article
Chemistry, Physical
Masoud Shiri, Mahmoud Parvazinia, Ali Akbar Yousefi, Naeimeh Bahri-Laleh, Albert Poater
Summary: A mathematical model for the time evolution of molecular weight distribution (MWD) was developed in this study. The model is based on the Ziegler-Natta polymerization mechanism and reaction kinetics, and can be extended to other types of catalysts. The model provides a more precise prediction over active sites and kinetic parameters using a simple mathematical equation, leading to improved reactor design in large-scale production.
Review
Engineering, Environmental
Bingdi Cao, Tao Zhang, Weijun Zhang, Dongsheng Wang
Summary: Sludge is a byproduct of sewage treatment containing pathogens, heavy metals, organic pollutants and other toxic substances. Chemical preconditioning is crucial for improving sludge dewatering efficiency, and different chemical conditioning technologies have a significant impact on the dewatering process. Research and evaluation of various enhanced dewatering technologies are important for improving dewatering efficiency.
Article
Engineering, Environmental
Lihong Wang, Haodan Xu, Ning Jiang, Suyan Pang, Jin Jiang, Tao Zhang
Summary: The study found that natural manganese-containing minerals can effectively activate PMS to degrade bisphenols in water, and the activation process is different from previous literature reports, mainly through inner-sphere complexation to enhance the reactivity of PMS.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Engineering, Environmental
Tamilarasan Palanisamy, S. Assiyeh Alizadeh Tabatabai, Tao Zhang, TorOve Leiknes
Summary: Chemical cleaning was conducted on PVDF hollow fiber UF membranes irreversibly fouled by cutting fluid using anionic, cationic and non-ionic surfactants. The study found that anionic surfactants showed better cleaning efficiency, while residual substances were observed on the membrane surfaces after cleaning with cationic and non-ionic surfactants.
JOURNAL OF WATER PROCESS ENGINEERING
(2021)
Article
Engineering, Environmental
Haodan Xu, Lihong Wang, Xuchun Li, Zhiqiang Chen, Tao Zhang
Summary: The coupling reaction of thiourea dioxide with trace copper ions can efficiently degrade refractory Diatrizoate, achieving deiodination and degradation at neutral pH values. In this process, copper(I) ions play a key role, and increasing the thiourea dioxide dosage and extending the reaction time can improve the degradation efficiency.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Wei Fang, Xuedong Zhang, Henri Spanjers, Tao Zhang
Summary: This study found that direct addition of persulfates into the fermenter can enhance VFA production from waste activated sludge, with lower cost-effectiveness for PMS compared to PDS, and preactivation not being necessary. The generated radicals from persulfates in the fermenter enhance WAS disintegration and solubilization, promoting the formation of biodegradable substances.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2021)
Review
Engineering, Environmental
Lihong Wang, Jin Jiang, Jun Ma, Suyan Pang, Tao Zhang
Summary: This review discusses the hot topic of cost-effective oxidation in the remediation of environmental pollutants, focusing on the role of copper species as efficient activators or catalysts and their application potential in polluted water remediation. The review also highlights approaches in literature to improve the performance of Cu(II)-initiated AOPs and methodologies for identifying intrinsic reactive species.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Environmental
Peizhi Wang, Wei Cheng, Xiaolei Zhang, Qianliang Liu, Ji Li, Jun Ma, Tao Zhang
Summary: The presence of humic acid (HA) in membrane distillation (MD) desalination can mitigate membrane scaling and wetting by forming a compact and protective gypsum/HA scale layer, which blocks the flow channel of scaling ions and suppresses the intrusion of scale particles into membrane pores.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Engineering, Environmental
Wei Cheng, Haodan Xu, Peizhi Wang, Lihong Wang, Anthony Szymczyk, Jean-Philippe Croue, Tao Zhang
Summary: We investigated the modification mechanisms of polyamide reverse osmosis membranes using sulfate radical and hydroxyl radical. The sulfate radical modification improved water permeability and salt rejection rates, while the hydroxyl radical modification enhanced membrane stability. Mass spectrometry analysis revealed that sulfate radical initiated polymerization reactions, while hydroxyl radical degraded the amide groups.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Engineering, Environmental
Ya Liu, Yunfeng Zhao, Ning Jiang, Wei Cheng, Dongwei Lu, Tao Zhang
Summary: This study reports a CO2-responsive material that can extract emulsified oil and demulsify oil droplets, allowing for separate reclamation of oil and surfactant. The material exhibits a high adsorption capacity for emulsified oil and can switch its surface wettability to achieve the separation of oil and surfactant. High rates of oil removal, oil recovery, and surfactant recovery are maintained during repeated adsorption/desorption operations.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Engineering, Environmental
Huabin Zeng, Yue Cheng, Xueci Xing, Tao Zhang, Xu Zhao
Summary: In this study, a coupled process using trace iron was developed to simultaneously activate the HSO3-/O2 system and PDS oxidation system, leading to accelerated generation of sulfate radical and hydroxyl radical for efficient phenol degradation. Density function theory revealed the role of a single electron shuttle in spatially separating the electron-donating activation and electron-accepting activation, avoiding mutual-annihilation of reactants. Furthermore, the in-situ generated electron shuttle was able to effectively inactivate chlorine-resistant pathogens and inhibit biofilm regrowth.
Article
Engineering, Environmental
Haodan Xu, Wei Cheng, Zhiqiang Chen, Xuedong Zhai, Jun Ma, Tao Zhang
Summary: Selective pollutant removal was achieved through oxidative filtration on a ceramic membrane doped with highly dispersed cobalt. The oxidative filtration showed insensitivity to chloride, bicarbonate, and humic substances, and utilized more oxidation capacity of PMS compared to the homogeneous PMS/Co2+ system.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Environmental
Peizhi Wang, Wei Cheng, Xiaolei Zhang, Ji Li, Jun Ma, Tao Zhang
Summary: Membrane distillation (MD) is a promising technology for hypersaline wastewater treatment, but its performance is hindered by inorganic scaling and wetting. This study presents a simple method to engineer membranes that resist scaling and wetting. Results show that coating a PVA layer significantly mitigates scaling and prevents wetting during MD.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Chemical
Wei Cheng, Peizhi Wang, Xiaolei Zhang, Ji Li, Yiwen Luo, Wenjuan Zhang, Jun Ma, Tao Zhang
Summary: This study successfully fabricates Janus membranes with high water flux and anti-scaling/wetting capacities by spray-coating polyvinyl alcohol layers on hydrophobic membrane substrates. The spray-coating method promotes the crosslinking of PVA polymer networks and facilitates water molecule transport, resulting in improved surface properties and wastewater treatment performances compared to traditional methods.
Article
Engineering, Environmental
Lihong Wang, Ning Jiang, Haodan Xu, Yiwen Luo, Tao Zhang
Summary: Cu(II) can catalyze the transition from Cu(II) to Cu(I) to Cu(III) during PDS activation, facilitating the removal of refractory pollutants such as BTH. The coordination of pollutants with Cu(II) plays a crucial role in the oxidative transformation process.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Engineering, Chemical
Yuhao Zhang, Haorui Wang, Tao Zhang, Zhi Geng, Wei Cheng
Summary: A facile citric acid chelated Fe(II)/PDS modification method was used to generate a controlled-release SO4.- oxidation condition at room temperature, which enhanced the performance of the membrane.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
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.
