Review
Environmental Sciences
Qian Li, Zhongshan Chen, Huihui Wang, Hui Yang, Tao Wen, Shuqin Wang, Baowei Hu, Xiangke Wang
Summary: This article reviews the key advancements in different methods for the synthesis of NZVI and NZVI-based materials, and introduces different modification methods as well as the removal mechanisms of various organic pollutants. It discusses the interaction mechanisms between NZVI/NZVI-based composites and organic pollutants, providing a basis for future studies on developing more effective NZVI-based materials for wastewater treatment.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Chemistry, Multidisciplinary
Shaodong Zhou, Kelei Xi, Songlin Zhuang, Qingqing Cheng
Summary: This study introduces a terahertz metalens with spherical aberration correction that utilizes dynamic phase for polarization multiplexed imaging. The metalens shows high imaging efficiencies and extinction ratios, exceeding 50% and 10:1 respectively. It offers a new approach for achieving multifunctional beam steering, tomographic imaging, and chiroptical detection.
Article
Environmental Sciences
Stephen Paul Blundell, Gary Owens
Summary: Among the three enhancement techniques studied, only ultrasonic energy significantly increased the degradation efficiency of nZVI for DDT and its primary degradation products. pH had no effect on the degradation efficiency of nZVI, while low pH significantly enhanced the effectiveness of mu ZVI remediation.
Review
Engineering, Environmental
Urvashi Kheskwani, Mansoor Ahammed
Summary: Nanotechnology, specifically the use of nanoscale zerovalent iron (nZVI), is being extensively studied for the treatment of various waste streams. The synthesis of nZVI particles using plant-based materials offers a green alternative that eliminates the need for toxic chemicals and reduces energy consumption. This review paper provides an overview of plant-based nZVI particle synthesis, its characteristics, and its application for the removal of different classes of pollutants from water.
WATER SCIENCE AND TECHNOLOGY
(2023)
Article
Green & Sustainable Science & Technology
Hao Tang, Jiaqi Wang, Shu Zhang, Hongwei Pang, Xiangxue Wang, Zhongshan Chen, Ming Li, Gang Song, Muqing Qiu, Shujun Yu
Summary: This paper introduces the potential of nanoscale zero-valent iron (NZVI) in environmental purification and explores modified NZVI, removal behaviors of heavy metal ions, radionuclides, and organic pollutants, as well as factors influencing pollutants removal and its implications to the environment.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Chemistry, Multidisciplinary
Yilong Hua, Wei Wang, Nan Hu, Tianhang Gu, Lan Ling, Wei-xian Zhang
Summary: The core-shell structure of nanoscale zero-valent iron (nZVI) has been shown to provide multiplex solution and surface chemistry for reliable and high-efficiency enrichment and separation of uranium from low-level sources. Treatment of uranium-tailings wastewater in continuous-flow reactors resulted in reacted nZVI with high uranium content and treated wastewater with significantly reduced uranium concentration. This research further supports the cost-effective use of nanotechnology for pollution control and resource recovery.
ENVIRONMENTAL SCIENCE-NANO
(2021)
Article
Environmental Sciences
Ying Pan, Pui-Ying Leung, Yuan-Yue Li, Juan Chen, R. Y. C. Kong, Nora F. Y. Tam
Summary: The study demonstrates the synergy between nZVI reduction and microbial debromination in remedying BDE-209 contamination in mangrove sediments. The debromination process depends on the levels of nZVI, with BDE-153 being the dominant debrominated congener. This combined approach shows promise in efficient and feasible remediation of BDE-209 in contaminated sediments.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Engineering, Environmental
Chao Gao, Jixue Sui, Kang Chen, Zongyuan Chen, Wangsuo Wu, Zhijun Guo
Summary: The study demonstrates that nZVI can effectively remove U(VI) from strongly alkaline solutions in anaerobic conditions, with a reduction efficiency of up to 95.5%, but the efficiency drops significantly in aerobic conditions due to oxidation and desorption processes. This offers new insights into the mechanisms of U(VI) interactions with nZVI in alkaline media and provides a potential approach for uranium recovery from spent nZVI.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Engineering, Environmental
So Yeon Yoon, Min Ji Kim, Hye Won Kim, Seon Hwa Lim, Choe Earn Choong, Sang-Eun Oh, Jung Rae Kim, Yeomin Yoon, Jae young Choi, Eun Ha Choi, Min Jang
Summary: The aim of this study was to investigate the effects of hydrophilic sulfur-modified nanoscale zero-valent iron (S-nZVI) as a biocatalyst for denitrification. The researchers found that the denitrifying bacteria Cupriavidus necator promote Fe corrosion during biocatalytic denitrification, resulting in a higher synergistic factor for S-nZVI compared to nanoscale zero-valent iron. Kinetic profiles showed that the preferred electron acceptor for biocatalytic denitrification using S-nZVI and C. necator was SO42-, and up-flow column experiments demonstrated a high nitrogen removal capacity using S-nZVI for 127 days. Microbiome taxonomic profiling revealed that the addition of S-nZVI promoted the growth of specific microbes that can enhance denitrification.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Engineering, Environmental
Xi Li, Ling Liu
Summary: This review systematically summarizes the application of nanoscale zero-valent iron (nZVI) as catalysts in different oxidants activation processes for pollutant removal in water and soil. It thoroughly investigates the performance and remediation mechanism of different nZVI/oxidant, as well as discusses the possible interaction mechanism in organic and heavy metal co-contamination. Additionally, it also examines the influencing factors and proposes the potential effects of nZVI/oxidant on biological systems and practical applications, while highlighting the constraints of the technology and future research prospects.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Environmental Sciences
Long Zhou, Yunqiang Yi, Zhanqiang Fang
Summary: In this study, nZVI/ZIF-8 nanocomposites were synthesized and their activity in removing Cr(VI) from wastewater was investigated. The results showed that nZVI/ZIF-8 exhibited superior activity and high efficiency in removing heavy metal ions from wastewater.
Article
Engineering, Environmental
Nuo Liu, Yuxiu Gong, Xingxing Peng, Shaolin Li, Wei-xian Zhang
Summary: This study investigates the reaction between sulfidated nanoscale zero valent iron (S-nZVI) and Cr(VI) in the sludge system and explores the effect of S-nZVI on microbes. The results show that S-nZVI has a high Cr(VI) removal capacity and a mild impact on microbial diversity. This study suggests that the usage of S-nZVI in sludge is a win-win solution.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Chemistry, Physical
Zengqiang Ci, Yanxue Yue, Jingting Xiao, Xinshui Huang, Yubing Sun
Summary: This study demonstrated the removal mechanism of U(VI) on nZVI/clay composites through batch experiments, XPS analysis, and surface complexation modeling. The findings include the adsorption capacity, reduction process, and surface complexation reaction of U(VI) on nZVI/clay composites. These findings are crucial for the highly efficient removal of radionuclides in actual environmental remediation.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Engineering, Environmental
Ying Liang, Lu Tang, Jun Jiang, Meng-li Li, Hua-gang Lv, Yong He, Hong-yu Liu, Sheng-guo Xue
Summary: In this study, by utilizing the dual support effect of coupling surface-modified carbon black with a surfactant, the removal capacity and mobility of nanoscale zero-valent irons (nZVIs) were enhanced for in situ remediation of contaminated groundwater.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Green & Sustainable Science & Technology
Peipei Song, Haiyin Xu, Saiwu Sun, Weiping Xiong, Zhaohui Yang
Summary: Biochar-loaded nanoscale zero-valent iron (nZVI@BC) was prepared for remediation of arsenic-contaminated soil. The effects of different factors on arsenic fractionation, pH, and CEC in soil were investigated. The results demonstrated that nZVI@BC can effectively stabilize arsenic and improve the available iron, pH, and CEC in the soil.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Environmental Sciences
Yilong Hua, Wei Wang, Xiaoyue Huang, Tianhang Gu, Dexin Ding, Lan Ling, Wei-xian Zhang
Article
Chemistry, Physical
Tianhang Gu, Wei Teng, Nan Bai, Zehan Chen, Jianwei Fan, Wei-xian Zhang, Dongyuan Zhao
JOURNAL OF MATERIALS CHEMISTRY A
(2020)
Article
Chemistry, Multidisciplinary
Liu Jing, Gu Tianhang, Wang Wei, Liu Ai-rong, Zhang Wei-xian
ACTA CHIMICA SINICA
(2019)
Article
Chemistry, Multidisciplinary
Gu Tianhang, Shi Junming, Hua Yilong, Liu Jing, Wang Wei, Zhang Wei-xian
ACTA CHIMICA SINICA
(2017)
