Article
Environmental Sciences
Xi Zhang, Xiaobin Yu, Xingyue Yu, Mohammadreza Kamali, Lise Appels, Bart Van der Bruggen, Deirdre Cabooter, Raf Dewil
Summary: This study investigated the efficiency and kinetics of the photoactivated periodate process for degrading 2,4-dichlorophenol in water, finding that UV/IO4- had a higher degradation rate than UV alone, regardless of pH. By adjusting the concentration of periodate and 2,4-DCP, the degradation rate and removal efficiency could be controlled effectively.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Environmental Sciences
Yunong Li, Hao Qin, Lixiao Wang, Junhe Lu, Jean-Marc Chovelon, Quansuo Zhou, Yuefei Ji
Summary: This study investigated the photolysis of 2,4-Dichloro-6-nitrophenol (DCNP) in aqueous solutions and found that the anionic form of DCNP is more photoreactive. Several photoproducts were identified, and the primary photochemical mechanisms were discussed. These findings provide insights into the transformation and fate of DCNP in UV-based engineering systems or natural sunlit surface waters.
Article
Environmental Sciences
V. G. Dileep Kumar, K. R. Balaji, R. Viswanatha, G. Ambika, R. Roopa, B. M. Basavaraja, Madhu Chennabasappa, C. R. Ravi Kumar, Zhong Chen, Xuan-Thanh Bui, M. S. Santosh
Summary: The study successfully used NaBiS2 as a photocatalyst to degrade 2,4-dichlorophenol in water, demonstrating its high stability, abundant surface-active sites, and efficient adsorption and catalytic activity. NaBiS2 showed promising properties such as non-toxicity and antifungal activity, making it a potential material for industrial and environmental applications.
Article
Engineering, Environmental
Yan Hu, Xuan Ma, Rongjian Liu, Iqra Mushtaq, Yongmei Qi, Cong Yuan, Dejun Huang
Summary: This study investigates the effects of 2,4-dichlorophenol (2,4-DCP) on the number of primordial germ cells (PGCs) in zebrafish. The results show that 2,4-DCP exposure increases PGC numbers and upregulates the expression of PGC marker genes. It is also found that 2,4-DCP interacts with estrogen receptor 2a (ESR2a) and the ESR2a signaling pathway plays a role in mediating the increase in PGC numbers.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Green & Sustainable Science & Technology
Hongjuan Qin, Zhen Wang, Shaocong Yang, Wenqiang Jiang, Yawei Gu, Jiachuan Chen, Guihua Yang
Summary: A novel type of iron-based nanoparticles decorated with cuprous sulfide and cuprous oxide was developed for the degradation of 2,4-dichlorophenol. The catalyst exhibited excellent catalytic performance through adsorption, Fenton-like oxidation, and photocatalytic processes. The research provides a promising approach for the treatment of chlorophenols polluted water.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Engineering, Environmental
Shuang Zhou, Ge Tong, Xiaoyu Meng, Yanhong Wang, Guohua Gu, Min Gan
Summary: This study investigates the mechanisms by which Acidithiobacillus ferrooxidans promotes the generation of ROS during pyrite oxidation under oxic and anoxic conditions, and its impact on the transformation and degradation of 2,4-DCP. The improvement in 2,4-DCP removal by A. ferrooxidans is mainly attributed to its increased ROS production.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Environmental Sciences
Zhiyong Zhang, Yi-Bo Hu, Wenjuan Ruan, Huiying Ai, Baoling Yuan, Ming-Lai Fu
Summary: Fe/Ni-D072 bimetallic nanoparticles supported on polystyrene cation exchange resin showed promising performance in removing 2,4-DCP. The study investigated the effects of various factors on the removal efficiency and identified Fe/Ni-D072 as a potential catalyst for chlorophenol removal with great application prospects in groundwater remediation.
Article
Environmental Sciences
Mengjuan Zhuang, Dajun Ren, Huiwen Guo, Zhaobo Wang, Shuqin Zhang, Xiaoqing Zhang, Xiangyi Gong
Summary: In this study, ultrasound-enhanced laccase was successfully used to degrade 2,4-DCP in soil, achieving a degradation rate of up to 51.7%. The optimal pH for laccase degradation of 2,4-DCP increased when ultrasound was utilized, making the degradation technology more practical. Analysis from HPLC and GC-MS revealed the degradation pathway of 2,4-DCP in soil, showing that it gradually transformed into phenol through dechlorination before generating small molecular organic matter.
ENVIRONMENTAL TECHNOLOGY
(2021)
Article
Chemistry, Physical
Siqin He, Bin Xu, Ying Liu, Xiaoshuang Yin, Wenzhong Yang, Yun Chen
Summary: Polyaminoamide (PAMAM) dendrimers with different generations were successfully grafted on Fe3O4-SiO2 composite particles, and laccase was immobilized to the surface using covalent cross-linking. The immobilized laccase showed excellent catalytic degradation ability for 2,4-dichlorophenol (2,4-DCP) with high stability.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Article
Environmental Sciences
Shurui Liu, Jin Wang, Zijie Zhang, Mengmeng Dou, Kaili Huo, Guoyu Ding, Yanmei Zhou, Chen Qiao
Summary: Porous sludge biochar (PSDBC) and zero-valent iron (ZVI) supported on porous sludge biochar composite (ZVI@PSDBC) were synthesized and showed enhanced performance in persulfate (PS) activation for 2,4-dichlorophenol (2,4-DCP) degradation. The degradation of 2,4-DCP was nearly complete within 20 minutes under low PS dosage in both PSDBC/PS and ZVI@PSDBC/PS systems. The stability and practicality of the sludge biochar materials were demonstrated in reusability and actual wastewater experiments, providing a promising method for municipal sludge reuse and effective PS activation in wastewater treatment.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Engineering, Environmental
Tianyi Li, Chengwu Zhang, Jingyi Zhang, Song Yan, Chuanyu Qin
Summary: This study found that 2,4-DCP degrades rapidly at high Fe concentrations primarily through oxidation by hydroxyl radicals, while at low Fe concentrations, a combination of hydroxyl radicals and superoxide radicals play a role. Additionally, the degradation of 2,4-DCP was significantly affected by solution pH.
FRONTIERS OF ENVIRONMENTAL SCIENCE & ENGINEERING
(2021)
Article
Engineering, Environmental
Yanli Man, Chi Wu, Bochi Yu, Liangang Mao, Lizhen Zhu, Lan Zhang, Yanning Zhang, Hongyun Jiang, Shankui Yuan, Yongquan Zheng, Xingang Liu
Summary: In this study, the abiotic transformation of kresoxim-methyl was investigated. The results showed that kresoxim-methyl degraded quickly in pH9 solutions but remained stable in neutral or acidic environments in the dark. Photolysis of kresoxim-methyl was influenced by natural substances and multiple transformation pathways were observed. Eighteen transformation products (TPs) were identified, most of which have not been previously described. The TPs showed lower aquatic toxicity compared to the parent compound, but further evaluation of their potential hazards is warranted.
Article
Electrochemistry
Vu Thi Thu Ha, Manh B. Nguyen, Tran Nhu Tam, Vu Thi Thu, Pham Thi Hai Yen, Pham Hong Phong, Dao Ngoc Nhiem, Le Quoc Hung, Tran Quang Hai
Summary: A sensitive and selective electrochemical sensor based on a zirconia oxide-decorated gold nanoflake nanocomposite-modified glassy carbon electrode was developed for the detection of 2,4-dichlorophenol. The sensor showed a low detection limit of 0.053 μM and a wide linear range from 1.5 to 24 μM. Good recoveries were achieved in real samples, demonstrating the potential for practical field applications.
JOURNAL OF APPLIED ELECTROCHEMISTRY
(2022)
Article
Engineering, Chemical
Hongwei Pang, Lijie Liu, Ziang Bai, Ruixing Chen, Hao Tang, Yawen Cai, Shujun Yu, Baowei Hu, Xiangke Wang
Summary: The research investigates the surface sulfidation impact on the modification of NZVI materials and the mechanism and efficiency of organic matter degradation by Sulfide NZVI. The results show that sulfidation treatment significantly enhances the stability and functionality of the material, resulting in higher degradation efficiency and pollutant removal capacity, which is beneficial for environmental governance.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Environmental Sciences
Weibin Huang, Andi Liu, Bobin Tang, Yuanhang Fu, Jinzhong Zhang
Summary: This study found that Pd-MWCNTs/Ni-foam electrode showed excellent dechlorination efficiency and phenol conversion rate in the electrocatalytic reduction of 2,4-dichlorophenol (2,4-DCP) and electro-Fenton oxidation (EFO) process. In the sequential electrocatalytic reduction and oxidation processes, the removal efficiencies of 2,4-DCP, phenol, and total organic carbon (TOC) reached 99.72%, 97.07%, and 61.45%, respectively.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(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.