Article
Engineering, Environmental
Li Gong, Jingting Chen, Yao Hu, Kai He, Eric J. Bylaska, Paul G. Tratnyek, Feng He
Summary: This study developed a method of simultaneous sulfidation and nitridation of zerovalent iron (ZVI) through mechanochemical ball milling, which improved the degradation of chloroform (CF). The composite material (S-N(C)-ZVI) exhibited synergistic effects of nitridation and sulfidation on CF degradation. Material characterizations showed that sulfidation and nitridation promoted the formation of Fe3O4 on the S-N(C)-ZVI particles.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Nanoscience & Nanotechnology
Yangzhi Liu, Ting Wu, Jason C. White, Daohui Lin
Summary: The novel use of nanoscale zero-valent iron (nZVI) in paddy soil contaminated with pentachlorophenol (PCP) not only increased grain yield and decreased grain PCP content, but also enhanced the removal rate of PCP from the soil.
NATURE NANOTECHNOLOGY
(2021)
Article
Engineering, Environmental
Yalan Mo, Jiang Xu, Lizhong Zhu
Summary: This study reveals the influence of sulfidized nanoscale zerovalent iron (SNZVI) on the dechlorination reactivity and selectivity of chlorinated ethenes (CEs). SNZVI exhibits significantly improved dechlorination reactivity and selectivity compared to zerovalent iron, depending on the chlorine number, chlorine position, and sulfur content of the CEs. By controlling the sulfidation degree of SNZVI, the dechlorination pathway and reactivity of CEs can be altered. These findings are important for the rational design of SNZVI for in situ groundwater remediation of various CEs.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Engineering, Environmental
Emmanuella Anang, Hong Liu, Xianyuan Fan, Dongye Zhao, Xuan Gong
Summary: The study found that nFe(0) undergoes transformation during the reaction with chloro-organics, resulting in the formation of different iron oxides, and 2,4-DCP is rapidly dechlorinated to 2-CP, 4-CP, and phenol. Without the support of Ni and attapulgite, the transformation of nFe(0) and dechlorination of 2,4-DCP were not significantly achieved.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Engineering, Chemical
Leqi Shi, Qi Deng, Li Guo, Yaguang Du, Dongyun Du, Tian C. Zhang
Summary: In this study, a novel synthetic composite (S-nZVI@ECS) was prepared by loading sulfidized nanoscale zerovalent iron (S-nZVI) onto exhausted copper slag (ECS) for the removal of Cd(II), Cu(II), and Pb(II) from aqueous solutions. The composite provides a new idea for utilizing ECS and prevents S-nZVI particles from agglomerating. The optimized S-nZVI@ECS can efficiently remove the three heavy metals over a wide pH range without being affected by coexisting ions.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Engineering, Environmental
Qi Wang
Summary: This study investigates the degradation behaviors of coexisting chlorobenzene congeners and their influence on the dechlorination of hexachlorobenzene (HCB) by nanoscale zero-valent iron. The results show that nanoscale zero-valent iron can improve the degradation efficiency of highly toxic chlorinated benzenes and reduce their accumulative effects on HCB dechlorination.
ENVIRONMENTAL GEOCHEMISTRY AND HEALTH
(2023)
Article
Engineering, Environmental
Miroslav Brumovsky, Jana Oborna, Vesna Micic, Ondrej Malina, Josef Kaslik, Daniel Tunega, Miroslav Kolos, Thilo Hofmann, Frantisek Karlicky, Jan Filip
Summary: The article discusses the significant enhancement in reactivity and corrosion resistance of zerovalent iron nanoparticles (nZVI) through nitriding. The study demonstrates the outstanding catalytic performance of iron nitrides (FexN) in various applications and their potential as a tool for trichloroethylene (TCE) dechlorination. The research findings provide valuable insights into the application of nitriding nanoparticles in environmental remediation.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Engineering, Environmental
Shichao Cai, Bo Chen, Xiaojiang Qiu, Jiamei Li, Paul G. Tratnyek, Feng He
Summary: Sulfidation of microscale ZVI using elemental sulfur as a reactant can achieve high efficiency in contaminant removal, with higher sulfidation efficiency compared to traditional sulfidation agents. The sulfidated mZVI has shown significantly enhanced reactivity and electron efficiency when reacting with trichloroethylene, making it a promising product for engineering applications.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2021)
Article
Engineering, Environmental
Payel Singh, Prabir Pal, Priyanka Mondal, Govindachetty Saravanan, Penumaka Nagababu, Swachchha Majumdar, Nitin Labhsetwar, Subhamoy Bhowmick
Summary: Sulphur modified nano zerovalent iron (S?nZVI) has shown high efficiency in removing inorganic arsenic from water, especially under acidic conditions. The addition of FeS on the surface of nZVI can significantly alter the sequestration mechanism of arsenic, leading to enhanced removal efficiency in contaminated water.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Engineering, Environmental
Zhen Wang, Yangyi Yu, Qin Guo, Chaoting Guan, Jin Jiang
Summary: This study investigates the relative role of different reactive intermediates in microscale and nanoscale zerovalent iron (ZVI) activated peroxydisulfate (PDS) processes. The results show that the relative role of Fe(IV) in PDS transformation varies in different stages, and the fast dissolution of nanoscale ZVI leads to a relatively lower relative role of Fe(IV) in PDS transformation.
Article
Chemistry, Multidisciplinary
Zhen Cao, Hao Li, Shuangyu Zhang, Yunxuan Hu, Jiang Xu, Xinhua Xu
Summary: The amount of NaBH4 used in the liquid-phase reduction method can significantly impact the properties of SNZVI, such as the S/Fe molar ratio and Fe-0 content. These properties are correlated to the reactivity and selectivity of SNZVI in trichloroethylene dechlorination reactions.
ENVIRONMENTAL SCIENCE-NANO
(2021)
Article
Engineering, Environmental
Huimin Hu, Qiwu Zhang, Qian Wang, Min Chen, Chao Wang, Zhenxing Wang
Summary: This study investigates the use of zero-valent silicon as an additive for mechanochemical dechlorination of hexachlorobenzene. The results show that zero-valent silicon can efficiently degrade hexachlorobenzene and produce safe byproducts for soil remediation. This research introduces a new alternative for practical application of mechanochemical remediation.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Engineering, Environmental
Junmin Deng, Sunho Yoon, Mathieu Pasturel, Sungjun Bae, Khalil Hanna
Summary: This study comprehensively examines the effect of AgNPs on the reductive ability of NZVI, and finds that low doses of AgNPs decrease the reactivity of NZVI while high doses enhance it. Additionally, sulfate and humic acid are found to enhance the removal of p-NP in the NZVI-AgNP suspension.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Environmental
Shuang Qiu, Zhengshuai Wu, Zhipeng Chen, Abdul-Wahab Abbew, Jinxiang Li, Shijian Ge
Summary: The study proposed a novel approach using nanoscale zerovalent iron (nZVI) to simultaneously promote microalgal activity and nutrient uptake from wastewater. By enhancing metabolic pathways and intracellular regulations, nZVI significantly increased biomass production, NH4+N and PO43--P uptake rates. The findings suggest that nZVI can regulate various metabolisms and gene expressions, providing a molecular mechanism for enhancing microalgal activities in wastewater treatment.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Engineering, Environmental
Xike Tian, Xiang Wang, Yulun Nie, Chao Yang, Dionysios D. Dionysiou
Summary: This study confirmed the oxidation process of PNP by S-ZVI, which is mediated by Fe(II) and H2O2 activation. The efficient degradation of PNP by S-ZVI is attributed to its dual role of reduction into p-aminophenol and oxidation into p-benzoquinone. The oxidative process accounts for 10% while the reduction process contributes to 90% of PNP degradation by S-ZVI.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2021)
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)