Article
Chemistry, Multidisciplinary
Xiao-Hong Yi, Ya Gao, Chong-Chen Wang, Yu-Hang Li, Hong-Yu Chu, Peng Wang
Summary: MIL-88A(Fe)@sponge (MS) was synthesized using a dip-coating method and demonstrated efficient photocatalytic Cr(VI) reduction under both low power LED UV light and real solar light irradiation. MS (0.2 g/L) in combination with 0.4 mmol/L tartaric acid (TA) achieved 100% removal of Cr(VI) (10 mg/L) within 6.0 min and 3.0 min under UV light and real solar light irradiation, respectively. Furthermore, the photo-induced e- and radicals (O2 center dot- and CO2 center dot -) were found to be vital in the MS/TA/UVL/Cr(VI) system. The results also demonstrated the long-term stability of MS in Cr(VI) reduction, making it a potentially efficient catalyst for large-scale wastewater treatment.
CHINESE CHEMICAL LETTERS
(2023)
Article
Engineering, Environmental
Qian Zhao, Xiao-Hong Yi, Chong-Chen Wang, Peng Wang, Weiwei Zheng
Summary: The MA photocatalyst prepared via hydrothermal immobilization method can achieve efficient Cr(VI) reduction under white light, showing potential for continuous operation in fixed-bed reactors.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Chemical
Dibya Ranjan Rout, Hara Mohan Jena
Summary: In this study, a novel adsorbent was synthesized by decorating zinc oxide particles on reduced graphene oxide, which showed high adsorption capacity and kinetics for hexavalent chromium removal in wastewater treatment. The reusable nature of this composite material indicates its innovative and excellent performance.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2022)
Review
Environmental Sciences
Chong-Chen Wang, Xueying Ren, Peng Wang, Cheng Chang
Summary: This state of the art review discusses the use of metal-organic frameworks (MOFs) and their composites for photocatalytic reduction of toxic Cr(VI) to less toxic Cr(III). The construction of composites improves the efficiency of Cr(VI) reduction through enhanced charge transfer, and the corresponding mechanisms are clarified through experimental tests and calculations. The immobilization of MOFs onto substrates allows for continuous operations under real solar light. The review also analyzes the environmental applications of Cr(VI) reduction and identifies influencing factors. Overall, this review highlights the significant breakthrough achieved in the field of photocatalytic Cr(VI) reduction using MOFs.
Article
Engineering, Environmental
Veer Singh, Jyoti Singh, Vishal Mishra
Summary: In this study, chitosan coated MnO2 nanoparticles synthesized through a green route using curcumin and Citrus limetta peel extract were successfully used to biosorb and reduce Cr(VI) to less toxic Cr(III). The nanoparticles showed spherical shape, crystalline nature, and a size range of 14 to 24 nm. They exhibited high specific surface area, active binding sites for chromium ions, and were proven to be reusable over multiple cycles of adsorption-desorption. The results suggest that these nanoparticles have great potential for water treatment applications.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Chemistry, Physical
Buyisile Kholisa, Mpumelelo Matsena, Evans M. N. Chirwa
Summary: This study isolated and identified a microbial consortium culture from sludge in a wastewater treatment plant, showing strong reduction capability for Cr(VI) and high removal efficiency under various operational conditions. The results demonstrated the potential of using bacteria for hexavalent chromium remediation in contaminated sites.
Article
Engineering, Environmental
Chao-Chuan Ho, Jui-Shuan Yu, Shao-Wei Yang, Vinh Ya, Hoang Anh Le, Liao-Ping Cheng, Kwang-Ho Choo, Chi-Wang Li
Summary: The study found that Cr(VI) in electroplating wastewater can be effectively removed through electrochemical reduction, with the optimum ORP range being -200 to -100 mV. In terms of operating cost, continuous flow treatments are more cost-effective than batch reactor treatments.
JOURNAL OF WATER PROCESS ENGINEERING
(2021)
Article
Environmental Sciences
Dongxia Luo, Rongyue Geng, Youxian Zhang, Ping Li, Jianjun Liang, Qiaohui Fan, Shirong Qiang
Summary: The interaction behaviors of Cr(VI) and biotite were studied, and the effect of Fe(II) and organic solute on Cr(VI) removal was observed.
Article
Microbiology
Margarita Y. Grabovich, Dmitry D. Smolyakov, Alexey Beletsky, Andrey Mardanov, Maria Gureeva, Nikita D. Markov, Tatyana S. Rudenko, Nikolai Ravin
Summary: The bacteria Sphaerotilus natans subspecies sulfidivorans and subspecies natans were originally described as subspecies based on high similarity in their 16S rRNA sequences, but due to significant differences in their genome characteristics and metabolic potential, it is proposed to classify them as different species, S. natans and S. sulfidivorans sp. nov.
ARCHIVES OF MICROBIOLOGY
(2021)
Article
Engineering, Environmental
Hai Liu, Guipeng Tian, Wenyi Wang, Jiachunxiu Zhang, Tianshu Wu, Xinye Ni, Yin-Hu Wu
Summary: The reduction of Cr(VI) to Cr(III) and subsequent precipitation, using a flow-through electrode system (FES), simplifies the treatment processes and offers potential for recollecting Cr resources. The study demonstrates that a multi-cathode FES system can significantly enhance Cr(VI) reduction and Cr(III) precipitation efficiency.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Environmental Sciences
Juqing Lou, Hui Xu, Hao Jin, Yongqing Cao, Ruyi Wang
Summary: The mechanism of Tubificidae in a sludge reduction system under Cr stress was studied by conducting predation experiments and analyzing enzyme activities. The results showed that Tubificidae had detoxification capabilities and could convert Cr(VI) to Cr(III). These findings suggest that Tubificidae can be considered an effective scavenger of environmental Cr(VI).
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Environmental Sciences
Yihao Wang, Jianjun Yang, Hui Han, Yongfeng Hu, Jian Wang, Ya Feng, Baoshan Yu, Xing Xia, Aminu Darma
Summary: Utilizing synchrotron-based techniques and high-throughput sequencing, this study revealed the reduction and distribution mechanisms of Cr(VI) in different types of agricultural soils, as well as the distinct bacterial communities present in each soil type, providing valuable insights into the transformation processes of Cr(VI) in agricultural soils.
Article
Environmental Sciences
Xinru Yang, Peng Liu, Meng Yao, He Sun, Ruxue Liu, Jiayin Xie, Yongsheng Zhao
Summary: The study found that using molasses to remediate Cr(VI)-contaminated groundwater is cost-effective and can effectively avoid secondary contamination. The addition of ascorbic acid can promote the rate of bioremediation, while NaHCO3 can buffer pH changes and promote the precipitation of Cr(III).
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Engineering, Environmental
Zhiyan Yan, Chenrui Liu, Yun Liu, Xiaoqian Tan, Xinyue Li, Yan Shi, Chunlian Ding
Summary: This study investigated the interaction of ZnO nanoparticles, Cr(VI), and Pannonibacter phragmitetus BB, and found that ZnO NPs inhibited Cr(VI) reduction but had no effect on bacterial viability. Cr(VI) induced BB to produce organic acids and release Zn2+ from ZnO NPs. The dissolved Zn2+ promoted Cr(VI) reduction, but hindered Cr(V)/Cr(IV) transformation.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Environmental Sciences
Qing Wu, Qiannan Li, Ying Zhang, Ruihan Wan, Sen Peng
Summary: This study isolated two novel Cr(VI)-reducing bacteria from a Cr salt plant and optimized their reduction conditions. It was found that Agrobacterium sp. Cr-1 showed a high capacity for Cr(VI) reduction, making it a promising candidate for the remediation of Cr(VI)-contaminated sites.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Engineering, Environmental
Shun-Shun Chen, Xu-Xiu Chen, Tian-Yu Yang, Li Chen, Zheng Guo, Xing-Jiu Huang
Summary: A temperature-modulated sensing strategy was proposed to identify and determine BTEX compounds. Highly effective identification of BTEX was achieved using linear discrimination and convolutional neural network analyses. Additionally, quantitative analysis of concentration was accomplished by establishing the relationship between concentration and response.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Myungkyung Noh, Jeong Yeon Sim, Jisung Kim, Jee Hwan Ahn, Hye-Young Min, Jong-Uk Lee, Jong-Sook Park, Ji Yun Jeong, Jae Young Lee, Shin Yup Lee, Hyo-Jong Lee, Choon-Sik Park, Ho-Young Lee
Summary: This study reveals that chronic exposure to PM induces chronic inflammation and development of COPD by dysregulating NAD+ metabolism and subsequent SIRT1 deficiency in pulmonary macrophages. Activation of SIRT1 by resveratrol effectively mitigates PM-induced inflammation and COPD development. Targeting metabolic and epigenetic reprogramming in macrophages induced by PM is a promising strategy for COPD treatment.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Yu Liu, Linlin Qin, Yiming Qin, Tong Yang, Haoran Lu, Yulong Liu, Qiqi Zhang, Wenyan Liang
Summary: Co/NC/PAC electrode was prepared by compounding ZIF-67 with powder-activated carbon for the electrocatalytic treatment of nitrogen-containing heterocyclic compounds. The degradation efficiency of the four compounds reached 90.2-93.7% under optimal conditions, and the degradation order was pyridazine < pyrimidine < pyrazine < pyridine.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Julien Couturier, Pierre Tamba Oulare, Blanche Collin, Claire Lallemand, Isabelle Kieffer, Julien Longerey, Perrine Chaurand, Jerome Rose, Daniel Borschneck, Bernard Angeletti, Steven Criquet, Renaud Podor, Hamed Pourkhorsandi, Guilhem Arrachart, Clement Levard
Summary: This study analyzes the properties of bauxite residue samples and explores the influence of bauxite ore origin, storage conditions, and storage time. The results show that the speciation of yttrium is related to the origin of bauxite ore, while no significant variation was observed with storage conditions or aging of the residues.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Sakthinarenderan Saikumar, Ravi Mani, Mirunalini Ganesan, Inbakandan Dhinakarasamy, Thavamani Palanisami, Dharani Gopal
Summary: Microplastic contamination in marine ecosystems poses a growing concern due to its trophic transfer and negative effects on marine organisms. This study investigates the transfer and impacts of polystyrene microplastics in an estuarine food chain. The results show that microplastics can be transferred through the food chain, although the transfer rates are low. The exposed organisms exhibit stress responses, suggesting the potential risk of microplastics reaching humans through the food chain.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Review
Engineering, Environmental
Yan-Jiao Li, Ying Yuan, Wen-Bing Tan, Bei-Dou Xi, Hui Wang, Kun-Long Hui, Jia-Bao Chen, Yi-Fan Zhang, Lian-Feng Wang, Ren-Fei Li
Summary: This review investigated and analyzed the distribution, composition, and abundance of heavy metals and antibiotic resistance genes (ARGs) in landfill. The results showed that heavy metals have lasting effects on ARGs, and complexes of heavy metals and organic matter are common in landfill. This study provides a new basis to better understand the horizontal gene transfer (HGT) of ARGs in landfill.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Jessy Joseph, Ari Vaisanen, Ajay B. Patil, Manu Lahtinen
Summary: Efficient and environmentally friendly porous hybrid adsorbent beads have been developed for the removal of arsenic from drinking water. The structural tuning of the adsorbents has been shown to have a significant impact on their adsorption performance, with high crystallinity leading to increased adsorption capacity and selectivity towards As5+.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Yangyang Liu, Minhua Xiao, Kaiqin Huang, Juntao Cui, Hongli Liu, Yingxin Yu, Shengtao Ma, Xihong Liu, Meiqing Lin
Summary: This study measured the levels of phthalate metabolites in breast milk collected from mothers in southern China. The results showed that phthalates are still prevalent in the region, and breastfeeding contributes to phthalate intake in infants. However, the levels detected do not pose significant health risks to infants based on dietary exposure. The increasing exposure to certain phthalates calls for further research into their sources and potential risks.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Zhiqiang Wu, Jianxing Sun, Liting Xu, Hongbo Zhou, Haina Cheng, Zhu Chen, Yuguang Wang, Jichao Yang
Summary: Ocean depth affects microbial diversity, composition, and co-occurrence patterns of microplastic microbial communities. Deterministic processes dominate the assembly of mesopelagic plastisphere microbial communities, while stochastic processes shape the assembly of bathypelagic microbial communities. The relationships between microorganisms in the mesopelagic layer are more complex and stable, with Proteobacteria and Actinobacteriota playing important roles.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Tingting Xiao, Renjie Chen, Chen Cai, Shijie Yuan, Xiaohu Dai, Bin Dong, Zuxin Xu
Summary: Based on the efficiency of catalytic ozonation techniques in enhancing sludge dewaterability, this study investigated its effectiveness in simultaneous reduction of antibiotics and antibiotic resistance genes. The results showed that catalytic ozonation conditioning changed the distribution of antibiotics and achieved high degradation rates. It also significantly reduced the abundance of ARGs, inhibited horizontal gene transfer, and decreased the signal transduction of typical ARGs host bacteria.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Yang Deng, Xiaohong Guan
Summary: This article discusses two different development approaches for ferrate(VI) technology in water treatment, arguing that process integration is a promising method that can drive technological innovation and revolution in water treatment, achieving higher treatment efficiency, reduced costs and energy consumption, and a smaller physical footprint.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Zhe Zhang, Lu Zhang, Zhihao Huang, Yuxin Xu, Qingqing Zhao, Hongju Wang, Meiqing Shi, Xiangnan Li, Kai Jiang, Dapeng Wu
Summary: In this study, a floating catalytic foam was designed and prepared to enhance the mass transfer in immobilized photocatalysts for wastewater treatment. The floating catalytic foam could float on the water surface and establish a temperature gradient, effectively promoting the diffusion and adsorption of target molecules during the photocatalytic process.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Muhammad Nafees, Adiba Khan Sehrish, Sarah Owdah Alomrani, Linlin Qiu, Aasim Saeed, Shoaib Ahmad, Shafaqat Ali, Hongyan Guo
Summary: The accumulation of cadmium and antibiotics in edible plants and fertile soil is a worldwide problem. This study investigated the potential of zinc oxide nanoparticles to alleviate the toxicity of both cadmium and antibiotics and promote spinach growth.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Lurui Wan, Kai Wang, Yuan Chen, Zhiyong Xu, Wenbo Zhao
Summary: In this study, a low viscosity and high thermal stability SO2 absorbent with dual interacting sites was successfully synthesized. The absorbent showed the highest absorption enthalpy change and entropy change values among reported SO2 absorbents, and exhibited lower viscosity and comparable thermal stability to ILs.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Zhengwei Zhou, Guojie Ye, Yang Zong, Zhenyu Zhao, Deli Wu
Summary: This study utilized Mo powder and STPP to enhance the performance of the sodium percarbonate system in pollutant degradation. The presence of Mo and STPP resulted in a higher degradation rate of the model pollutant SMX, with low oxidant consumption. The system generated multiple active species through a series of chain reactions at different pH values, exhibiting excellent performance towards electron-rich pollutants. Furthermore, Mo demonstrated excellent stability and reusability.
JOURNAL OF HAZARDOUS MATERIALS
(2024)