Article
Environmental Sciences
Bin Cui, Shaozhu Fu, Xin Hao, Dandan Zhou
Summary: In this study, a simultaneous combination of ozonation and biodegradation (SCOB) was proposed to treat coking wastewater. The SCOB system showed higher COD and total phenol removal compared to individual biodegradation and ozonation systems. Ozonation contributed to the oxidation of organics with unsaturated functional groups and soluble microbial products (SMPs), resulting in a decrease in effluent toxicity and chroma. The core of the carrier became the dominant region for biodegradation, leading to the stabilization of COD removal at >80%.
Article
Environmental Sciences
Yu Xia, Weijia Li, Xuwen He, Dannuo Liu, Yichen Sun, Jie Chang, Jing Liu
Summary: Coagulation-adsorption with sludge-based activated carbon (SAC) can effectively remove organic matter in biotreated coking wastewater (BTCW). SAC has a well-developed pore structure and large specific surface area, resulting in high removal efficiency of organic matter. Compared with commercial powdered activated carbon, SAC achieves similar COD removal efficiency at a higher adsorption speed.
Article
Agricultural Engineering
Chen Wang, Yaming Liu, Mingjie Huang, Wei Xiang, Zhicheng Wang, Xiaohui Wu, Feixiang Zan, Tao Zhou
Summary: This study successfully developed a ternary process for efficient removal of nitrogen from coking wastewaters. The process involved biological pretreatment, Fenton sub-pretreatment, and final partial nitrification-denitrification process. The combination of these processes resulted in high removal rates of COD, SCN-, NH4+-N, and TN from the wastewater.
BIORESOURCE TECHNOLOGY
(2022)
Article
Environmental Sciences
Tamal Kanti Ghosh, Pinakpani Biswas, Prasenjit Bhunia, Sameer Kadukar, Saroj Kumar Banerjee, Rita Ghosh, Supriya Sarkar
Summary: The treatment of coking wastewater has always been a challenge due to its complex and toxic nature. Various technologies such as biological treatment, advanced oxidation processes, and activated carbon treatment are available for removing color and organic contaminants from wastewater. However, due to challenges associated with existing methods, there has been a push towards developing new promising technologies, like using coke breeze for adsorption treatment, which has shown significant removal efficiencies for color and COD within a short time period.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Engineering, Environmental
Hussein E. Al-Hazmi, Dominika Grubba, Joanna Majtacz, Aleksandra Ziembinska-Buczynska, Jun Zhai, Jacek Makinia
Summary: Recently, the combined partial denitrification and anammox (PD/anammox) process using organic matter in municipal wastewater has gained attention for sustainable N removal. It offers advantages such as reduced dissolved oxygen demand, lower organic carbon requirement, less excess sludge production, and lower greenhouse gas emissions compared to conventional nitrification-denitrification. This review discusses the latest improvements in PD/anammox systems and focuses on the production/consumption pathways of critical intermediate NO2-. The C/N ratio and concentration of dosed organic carbon are crucial for optimal efficiency, as overgrowth of denitrifying bacteria can negatively impact anammox activity. Microorganism competition in single-stage PD/anammox systems plays a key role in achieving efficient N removal from mainstream wastewater. Challenges and limitations in recognizing inhibition mechanisms and performance inhibitors are also addressed. Future research should explore combining PD/anammox with other processes and developing self-supporting bacterial systems to enhance total nitrogen removal efficiency.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Engineering, Environmental
Zeyuan Yang, Peng Liu, Jian Wang, Ling Ding, Luqi Li, Hanzhong Jia, Tiecheng Wang, Xuetao Guo, Shixiang Gao
Summary: This study investigated the effects and mechanisms of dissolved organic matter (DOM) derived from microplastics (MP-DOM) on the photodegradation of sulfamethazine (SMT) during UV disinfection. Results showed that MP-DOM accelerated the photodegradation of SMT by generating reactive oxygen species (ROS) through its photosensitizing properties. The production of ROS varied depending on the components of DOM.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Environmental Sciences
Tuo Wei, Zixin Ban, Xiong Ke, Acong Chen, Xianghong Guan, Haibo Gan, Jiamin Pan, Zemin Li, Cong Wei, Guanglei Qiu, Haizhen Wu, Chaohai Wei
Summary: Hydraulic retention time (HRT), an essential factor in wastewater treatment, significantly affects water quality and energy consumption. This study creatively linked HRT with process variation and developed a novel combined process model (CPM) based on operational and performance data. The relationships between HRT, effluent quality, and energy consumption were systematically analyzed, providing optimal process configurations to meet desired effluent quality with the lowest energy consumption.
Article
Chemistry, Physical
Fei Li, Guang Zhang
Summary: The study investigates an efficient technique to remove toxic heavy metal cations from wastewater using a boroxine covalent organic framework, showing that the boroxine layer is effective in capturing the cations and reducing the HOMO-LUMO gap. Systems with higher electron transport rates exhibit higher binding energy and charge transfers between the cation and boroxine layer, suggesting potential applications for high-efficient materials in removing wastewater pollutants.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Engineering, Environmental
Xuemei Wang, Jinyao Ma, Qi Hu, Xiaohong Hou
Summary: The use of herbal medicine has a long history, and one of the most commonly used herbs is Radix Aconiti. However, Radix Aconiti contains highly toxic alkaloids, therefore, it needs to be processed before use. The processing wastewater from Radix Aconiti is highly toxic due to the presence of alkaloids, posing a significant threat to human and environmental safety. This study demonstrates that the Fenton method is effective in removing toxic substances from Radix Aconiti processing wastewater, and AOP shows great potential in treating toxic herbal wastewater.
JOURNAL OF WATER PROCESS ENGINEERING
(2023)
Article
Environmental Sciences
Wanjin Hu, Yang Qu, Jun Xiong, Lingli Li, Xuemei Wang, Xin Wang, Wenshi Liu, Yan Wu
Summary: The wastewater generated by solvent amine desulfurization in natural gas purification plants contains recalcitrant organic compounds and high salinity, posing a serious threat to the environment. This study conducted a molecular-level analysis of organic matter and compared the treatment efficacy of three oxidation processes, identifying O-3/H2O2-Fenton as the optimal approach. The combined oxidation method effectively degraded long-chain unsaturated compounds into short-chain aldehydes and fatty acids, and subsequent Fenton oxidation removed refractory organics and reduced the diversity of organic matter. The findings demonstrate the enhanced efficacy of Fenton oxidation in removing organic matter through the conversion of extended-chain unsaturated compounds.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
L. Jothinathan, Q. Q. Cai, S. L. Ong, J. Y. Hu
Summary: The combined microbubble-catalytic ozonation process (M-O-3/Fe/GAC) was found to significantly enhance the efficiency of ozonation in petrochemical wastewater treatment, achieving a COD removal efficiency of 88% and a reduction of phenolic compounds by 63% within 15 minutes.
Article
Environmental Sciences
Zilong Hou, Xin Zhou, Zilong Zhao, Wenyi Dong, Hongjie Wang, Huaguang Liu, Zhiwei Zeng, Jin Xie
Summary: The behavior and fate of aromatic organic compounds (AOCs) in a lab-scale step-feed three-stage integrated A/O biofilter (SFTIAOB) treating synthetic coking wastewater (COW) were investigated. Long-term operation showed simultaneous removal of COD, phenol, indole, quinoline, and pyridine. Various analysis methods including UV-visible spectroscopy, infrared spectroscopy, three-dimensional fluorescence spectroscopy, and gas chromatography-mass spectrometry confirmed carboxylation, ring cracking, mineralization, and the transformation and elimination of tryptophan and humic acid. Functional degrading bacteria and aromatic ring-cleavage enzymes were successfully identified, and the AOCs biodegradation mechanisms by alternating anoxic and aerobic treatment were revealed.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Engineering, Environmental
Ye Du, Wen-Long Wang, Zhi-Wei Wang, Chang-Jie Yuan, Ming-Qi Ye, Qian-Yuan Wu
Summary: Byproduct formation during sulfate radical-based processes like UV/PMS has raised concern. This study found that both PMS alone and UV/PMS can increase the toxicity of wastewater, while UV/H2O2 decreased the toxicity.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Green & Sustainable Science & Technology
Yufei Wang, Qianqian Liu, Long Yan, Jian Li, Gang Xie, Sanping Chen, Jianjun Wu
Summary: This study presents a novel reutilization strategy for semi-coking wastewater, converting phenols and ammonias into thermoset phenolic resin. The reaction with formaldehyde effectively removes pollutants and enables economic reutilization of the wastewater.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Chemistry, Multidisciplinary
Zilong Ma, Aosheng Yang, Yinfei Liao, Lei Wang, Yijun Cao
Summary: Semi-industrial tests demonstrated that the combined flotation process using FCSMC and mechanical flotation cells showed superior performance in beneficiation of Sanshandao low-grade gold ore, with improved efficiency and simplified flowsheet. The approach of combining fine particle efficiency of FCSMC and coarse particle effectiveness of mechanical flotation cells resulted in better separation performance, promising higher gold grade and recovery rates.
Review
Environmental Sciences
Attila Csaba Kondor, Anna Viktoria Vancsik, Laszlo Bauer, Lili Szabo, Zoltan Szalai, Gergely Jakab, Gabor Maasz, Marta Pedrosa, Maria Jose Sampaio, Ana Rita Lado Ribeiro
Summary: This review provides a critical overview of research on the removal efficiency of priority substances and compounds of emerging concern through bank filtration, discussing influencing factors and future challenges. The findings show that the efficiency of bank filtration is influenced by multiple factors and varies for different substances.
ENVIRONMENTAL POLLUTION
(2024)
Article
Environmental Sciences
Xinyan Wang, Shuai Zhang, Huihui Yan, Zhao Ma, Yunshan Zhang, Haining Luo, Xueli Yang
Summary: This study investigated the association between ambient PM2.5, O3 pollution, and ovarian reserve in reproductive-aged Chinese women. The results showed that increased exposure to PM2.5 and O3 was associated with decreased AMH levels, indicating reduced ovarian reserve. Notably, the effects of O3 exposure on ovarian reserve were different from those of PM2.5 exposure.
ENVIRONMENTAL POLLUTION
(2024)
Article
Environmental Sciences
Tingting Ma, Yanjuan Ding, Fengjiao Xu, Chen Zhang, Min Zhou, Ya Tang, Yanrong Chen, Yating Wen, Rufei Chen, Bin Tang, Shigui Wang
Summary: The dragonfly species Orthetrum albistylum can accumulate heavy metals, and its heat shock protein genes have the potential to serve as biomarkers for monitoring environmental pollutants.
ENVIRONMENTAL POLLUTION
(2024)
Article
Environmental Sciences
Naoto Ishiwaka, Koya Hashimoto, Masayoshi K. Hiraiwa, Francisco Sanchez-Bayo, Taku Kadoya, Daisuke Hayasaka
Summary: Systemic insecticides and rising temperatures have combined effects on the abundance of Odonata nymphs in paddy fields. The standalone effect of insecticide exposure decreased the Odonata community, while nymphs decreased synergistically with temperature rise in paddy water. However, the impacts of each stressor alone varied among species.
ENVIRONMENTAL POLLUTION
(2024)
Article
Environmental Sciences
Marco Vecchiato, Carlo Barbante, Elena Barbaro, Francois Burgay, Warren R. L. Cairns, Alice Callegaro, David Cappelletti, Federico Dallo, Marianna D'Amico, Matteo Feltracco, Jean-Charles Gallet, Andrea Gambaro, Catherine Larose, Niccolo Maffezzoli, Mauro Mazzola, Ivan Sartorato, Federico Scoto, Clara Turetta, Massimiliano Varde, Zhiyong Xie, Andrea Spolaor
Summary: The Arctic region is facing contamination from long-range pollution and local human activities. Polycyclic Aromatic Hydrocarbons (PAHs) are used as environmental indicators for emission, transport, and deposition processes. Research conducted in the Arctic surface snow in Ny-Ålesund, Svalbard from October 2018 to May 2019 shows that long-range inputs of PAHs mainly occur in winter, while the most abundant analyte retene exhibits opposite seasonal trends.
ENVIRONMENTAL POLLUTION
(2024)
Review
Environmental Sciences
Maoshui Zhuo, Zhijie Chen, Xiaoqing Liu, Wei Wei, Yansong Shen, Bing-Jie Ni
Summary: This paper discusses the application of three catalytic processes (photocatalysis, electrocatalysis, and biocatalysis) in the management of microplastic pollution, and introduces the efficiency and catalytic mechanisms of different catalysts. It also proposes the development prospects for sustainable management of microplastic pollution.
ENVIRONMENTAL POLLUTION
(2024)
Article
Environmental Sciences
Shiyu Chen, Zhenzhen Shi, Qiang Zhang
Summary: In this study, a human physiologically based pharmacokinetic (PBPK) model of diethyl phthalate (DEP) was developed to assess its toxicity. The model considers the distribution and metabolism of DEP and its active metabolite monoethyl phthalate (MEP) in different tissue compartments. Sensitivity analysis and Bayesian Markov chain Monte Carlo (MCMC) simulations were performed to evaluate the uncertainty and variability of the model parameters. The results suggest that dermal absorption is an important route of exposure to DEP in the environment.
ENVIRONMENTAL POLLUTION
(2024)
Article
Environmental Sciences
Bangguo Wang, Lijing Wang, Wenxi Cen, Tao Lyu, Peter Jarvis, Yang Zhang, Yuanxun Zhang, Yinghui Han, Lei Wang, Gang Pan, Kaili Zhang, Wei Fan
Summary: This study investigates the feasibility and mechanisms of a chemical-free nanobubble-based AOP for treating organic micropollutants in water. The results show that the oxygen nanobubble AOP has a significantly higher removal efficiency compared to air and nitrogen nanobubbles. The treatment performance is not affected by pH and the presence of ions. Higher initial concentrations of the micropollutant lead to slower treatment processes, but similar removal performance is achieved in the end. The presence of organic matter reduces the removal rate of the micropollutant. The results have practical feasibility for water and wastewater treatment.
ENVIRONMENTAL POLLUTION
(2024)
Article
Environmental Sciences
Yingmei Huang, Jicai Yi, Yao Huang, Songxiong Zhong, Bin Zhao, Jing Zhou, Yuxuan Wang, Yiwen Zhu, Yanhong Du, Fangbai Li
Summary: This study investigates the impact of biochar on methylmercury (MeHg) accumulation in rice. The results show that biochar reduces MeHg levels in paddy soils by decreasing bioavailable Hg and microbial Hg methylation. Additionally, biochar decreases the uptake and translocation of MeHg in rice plants, resulting in a reduction of MeHg accumulation in rice grains.
ENVIRONMENTAL POLLUTION
(2024)
Article
Environmental Sciences
Nengde Zeng, Fei Huang, Jiani Du, Chenghao Huang, Qian Yang, Xinhua Zhan, Baoshan Xing
Summary: This study investigates the protein targets and protein-ligand interactions related to PAH contamination in crop xylem sap using computational tools. The results show that phenanthrene has a more pronounced effect on the xylem sap proteins of maize and wheat, with maize DEPs associated with lipid biosynthesis and wheat DEPs exhibiting an increase in ABC transporters. This study provides insights into the regulation and movement of PAHs within plant xylem.
ENVIRONMENTAL POLLUTION
(2024)
Article
Environmental Sciences
Xinwei Chen, Hao Ma, Run Wang, Man Wang, Binbin Zhu, Yanqing Cong, Xiayue Zhu, Guoqin Wang, Yi Zhang
Summary: Co3O4/TiO2-NRs electrodes with excellent photoresponse were prepared via plasma-assisted modification of Co3O4 on TiO2. The combination of Co3O4 and TiO2 improved the light utilization efficiency and showed potential for degradation of pollutants.
ENVIRONMENTAL POLLUTION
(2024)
Article
Environmental Sciences
Wenjing Ji, Liying Song, Jing Wang, Hongqing Song
Summary: This study conducted a life-cycle assessment to examine the correlation between natural gas consumption and carbon emissions in different end uses in China. The results showed that both natural gas consumption and life-cycle carbon emissions have been increasing since 2017. Significant variations in NG life-cycle carbon emissions were found across different provinces and sectors, highlighting the need for targeted efforts to reduce carbon emissions.
ENVIRONMENTAL POLLUTION
(2024)
Article
Environmental Sciences
Youyi Chen, Boxuan Zhang, Pojun Zhang, Guogui Shi, Hao Liang, Wu Cai, Jingyu Gao, Sumin Zhuang, Kaiyin Luo, Jiaqi Zhu, Chaoxiang Chen, Kunyu Ma, Jinrong Chen, Chun Hu, Xueci Xing
Summary: The synergistic effects of trace sulfadiazine and cast-iron corrosion scales on the formation of disinfection by-products in drinking water distribution systems were investigated. The presence of magnetite resulted in increased concentrations of DBPs due to the higher microbial activity and enhanced microbial extracellular electron transport pathway. The study highlights the importance of considering trace antibiotics pollution and corrosion scales in water sources for DBP control.
ENVIRONMENTAL POLLUTION
(2024)
Review
Environmental Sciences
Bishwa Raj Pokharel, Vijay Sheri, Manoj Kumar, Zhiyong Zhang, Baohong Zhang
Summary: This review summarizes the interactions, uptake, and transport of aluminum nanoparticles (Al-NPs) in plants, highlighting their negative effects on plant growth and development, as well as their potential to alter plant defense systems and gene expression.
ENVIRONMENTAL POLLUTION
(2024)
Article
Environmental Sciences
Yonglu Wang, Fengsong Zhang, Xiaoyong Liao, Xiao Yang, Guixiang Zhang, Liyun Zhang, Chaojun Wei, Pengge Shi, Jiongxin Wen, Xiaorong Ju, Can Xu, Yang Liu, Ying Lan
Summary: This study aims to explore the effects of thiencarbazone-methyl center dot isoxaflutole on soil microflora and the potential mitigation mechanisms to bacterial communities. It was found that increasing the application of thiencarbazone-methyl center dot isoxaflutole resulted in increased stress on soil bacterial community structure and diversity. Increasing soil pH was recognized as a key factor in improving the diversity and structure of soil microflora. Supplemental use of nitrapyrin or modified attapulgite can increase soil pH and improve bacterial diversity.
ENVIRONMENTAL POLLUTION
(2024)