Article
Engineering, Environmental
Chen Chen, Xiaowen Zhang, Tianjiao Jiang, Mi Li, Ying Peng, Xudong Liu, Jian Ye, Yilong Hua
Summary: By successfully coating Mg(OH)(2) onto the surface of nZVI, the removal efficiency and stability of nZVI have been improved, enhancing the removal performance of U(VI). nZVI@Mg(OH)(2) is expected to play an important role in the in-situ remediation of U(VI).
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Engineering, Environmental
Mingyang Song, Xiaolei Hu, Tianhang Gu, Wei-xian Zhang, Zilong Deng
Summary: In this study, a nanocellulose-based composite, NC-nZVI, was developed for efficient removal of nickel. The nZVI was anchored to nanocellulose through a liquid-phase reduction method, resulting in varied morphology and dispersion status. Among the developed composites, CNC-nZVI showed the most evenly distributed nZVI particles. The binding between NC and nZVI was achieved through hydrogen bonds, electrostatic attractions, coordination-covalent bonds, and steric hindrance. The CNC-nZVI composite exhibited significantly higher removal efficiency of Ni2+ compared to bare nZVI, and remained effective under a wide pH range and in the presence of interference ions like NO3-, Cl-, and Ca2+. The observed hollow-out structure and Tafel extrapolation curves indicated that CNC activated diffusion path and accelerated electronic transfer from nZVI. The superior removal performance of NC-nZVI and the abundance of raw materials make it a promising material for environmental remediation and wastewater treatment.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Engineering, Environmental
Qi Cheng, Qingrui Li, Xiaojie Huang, Xiaoqin Li, Yunyan Wang, Weizhen Liu, Zhang Lin
Summary: In this study, cauliflower-like amorphous nanoscale zero-valent iron (A-nZVI) was prepared and found to have better performance for the removal of Sb(III) compared to nZVI. A-nZVI showed higher removal capacity and selectivity for Sb(III) and was less affected by interfering anions. The findings contribute to the remediation of Sb(III) in groundwater.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Engineering, Chemical
Li Liang, Weiying Li, Yue Li, Wei Zhou, Jiping Chen
Summary: The study investigated the removal mechanisms of sulfidated nanoscale zero-valent iron (S-nZVI) towards EDTA-chelated CdII (CdII-EDTA) and the effects of critical factors on CdII-EDTA removal by S-nZVI. Results showed that S-nZVI had a high removal capacity for CdII-EDTA and the mechanism involved two-step replacement reactions.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Environmental Sciences
Chunxia Ding, Wei-ai Zeng, A-juan Zhao, Mengyun Yang, Yanlan Xie, Yaocheng Deng, Daoxin Gong, Meizheng Duan, Hailin Cai, Pengfei Xie, Yong Zhou, Zhiyong Wen
Summary: Nanoscale zero-valent iron particles loaded on montmorillonite (nZVI/Mt) were synthesized for effective removal of thiamethoxam, with the reaction conditions optimized through response surface methodology. The removal efficiency of thiamethoxam reached 94.29% under the optimal conditions, and the degradation mechanism involved reduction and elimination of the -NO2 group on the thiamethoxam molecule by nZVI/Mt.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Engineering, Chemical
Yujun Cheng, Haoran Dong, Tianwei Hao
Summary: In this study, calcium carbonate coated nanoscale zero-valent iron (C-nZVI) was synthesized for Cr(VI) removal. The water chemistry had an influence on C-nZVI reactivity, with NO3 showing a positive effect on C-nZVI contrary to its influence on nZVI.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Biotechnology & Applied Microbiology
Anzhou Ma, Jianpeng Ma, Xianke Chen, Guoqiang Zhuang
Summary: A synergistic removal strategy using Pseudomonas sp. JS100 and immobilized nanoscale zero-valent iron (NZVI) was proposed for the degradation of pentachlorobenzene (PeCB). The removal efficiency of PeCB reached 80.2% within 48 hours in the synergistic system. NZVI particles were dispersed and attached to the biofilter to increase the specific surface area.
FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Qiming Li, Meili Liu, Xuchun Qiu, Xiang Liu, Malcom Frimpong Dapaah, Qijian Niu, Liang Cheng
Summary: Carbonized melamine foam-supported nZVI composites were evaluated for efficient Cr(VI) removal. Fe@MF-12.5-800 exhibited the highest removal efficiency and remarkable stability at a neutral pH.
Article
Engineering, Environmental
Peiyuan Deng, Guangzhou Wang, Changkan Li, Shentang Dou, Wei Yuan
Summary: Nano zero-valent iron-supported biochar pellets synthesized via liquid-phase reduction showed promising performance in estrogen removal. The adsorption equilibrium was reached within 10 minutes, with adsorption capacity decreasing with increasing solute pH and pellets dosage, while adsorptivity increasing with initial estrogen concentration.
WATER SCIENCE AND TECHNOLOGY
(2022)
Article
Agricultural Engineering
Xiaohui Liu, Jia Wei, Yaodong Wu, Jing Zhang, Luyi Xing, Yifei Zhang, Guoping Pan, Jiamei Li, Mengdie Xu, Jun Li
Summary: The study demonstrated that using SBC and nZVI for the bioremediation of nitrate-contaminated water shows promising potential in practical applications, especially with the use of immobilized active pellets which can improve nitrate removal efficiency and tolerance under different conditions.
BIORESOURCE TECHNOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Liang Dai, Kai Meng, Weifan Zhao, Tao Han, Zhenle Lei, Gui Ma, Xia Tian, Jun Ren
Summary: In this study, attapulgite-supported nano zero-valent iron (nZVI@ATP) was synthesized and used for Pb2+ remediation in aqueous solution. The adsorption performance of nZVI@ATP for Pb2+ was improved, and the mechanism included reduction, precipitation, and complex formation.
Article
Environmental Sciences
Feiyang Sun, Yuhuan Zhu, Xinyang Liu, Zifang Chi
Summary: In this study, nanoscale zero-valent iron supported by reduced graphene oxide (nZVI/rGO) was synthesized for the removal of Se(IV) from wastewater. The effects of different environmental conditions on the removal efficiency were investigated, and the reaction mechanism was further analyzed through characterization techniques.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Chemistry, Physical
Zhicheng Dong, Yunyun Xu, Can Wu, Jin Chao, Chen Tian, Zhang Lin
Summary: In this study, a novel method for removing natural organo-chromium (NOCr) was demonstrated by transforming it into structures similar to Cr-Fe minerals in nature using nano zero-valent iron (nZVI). The process involved adsorption, decomplexation, and re-immobilization stages, resulting in a high removal efficiency of chromium glycinate (Cr-Gly) under ambient conditions. This research provided a new and efficient approach for mitigating chromium pollution in the environment.
Article
Environmental Sciences
Guocui Wu, Wenjia Kong, Yue Gao, Yan Kong, Zhenguo Dai, Hongbing Dan, Yanan Shang, Shouquan Wang, Fengjiao Yin, Qinyan Yue, Baoyu Gao
Summary: The study demonstrates that sulfide-modified nanoscale zero-valent iron (S-nZVI) is a more promising catalyst for activating persulfate (PS) compared to normal nZVI, especially in the treatment of saline pharmaceutical wastewater. The sulfidation behavior enhances the removal efficiency of chloramphenicol (CAP) and possible degradation pathways of CAP in the S-nZVI/PS system were inferred through liquid chromatography-mass spectrometry (LC-MS) and density functional theory (DFT) calculations.
Article
Environmental Sciences
Yuping Han, Huanhuan Xu, Guangzhou Wang, Peiyuan Deng, Lili Feng, Yaoshen Fan, Jiaxin Zhang
Summary: This study summarized the preparation, characterization, and application of biochar and nZVI-biochar composite for estrogens removal. The experiment results showed that nZVI-biochar exhibited superior removal performance for estrogens pollutants compared to biochar. The adsorption kinetics of estrogens on nZVI-biochar followed the quasi-second-order model, and the adsorption isotherm could be well represented by the Freundlich model.
Article
Engineering, Environmental
Jiajia Fan, La Rao, Yi-Ting Chiu, Tsair-Fuh Lin
Article
Engineering, Environmental
Jiajia Fan, Bo-Hung Lin, Che-Wei Chang, Yuqing Zhang, Tsair-Fuh Lin
Article
Environmental Sciences
Jiajia Fan, Robert Daly, Peter Hobson, Lionel Ho, Justin Brookes
Article
Engineering, Environmental
Jiajia Fan, Lionel Ho, Peter Hobson, Robert Daly, Justin Brookes
JOURNAL OF ENVIRONMENTAL ENGINEERING
(2014)
Article
Engineering, Environmental
Jiajia Fan, Peter Hobson, Lionel Ho, Robert Daly, Justin Brookes
JOURNAL OF HAZARDOUS MATERIALS
(2014)
Article
Engineering, Environmental
Jiajia Fan, Lionel Ho, Peter Hobson, Justin Brookes
Article
Environmental Sciences
Kejia Zhang, Renjie Pan, Zhang Luo, Tuqiao Zhang, Jiajia Fan
Article
Engineering, Environmental
Shiyuan Lin, Xin Yu, Jingyun Fang, Jiajia Fan
Article
Environmental Sciences
Ruoxue Xin, Xin Yu, Jiajia Fan
Summary: The presence of antibiotics in source waters may affect the growth and formation of harmful algal blooms dominated by Microcystis aeruginosa. A study investigated the responses of this cyanobacterium to the antibiotic roxithromycin (ROX) at environmentally relevant concentrations. The results showed that ROX influenced the growth, microcystin production, and release of algal organic matters of M. aeruginosa, indicating potential effects on water quality and the formation of harmful algal blooms.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Green & Sustainable Science & Technology
Yinan Huang, Jiajia Fan, Huan Liu, Xiancai Lu
Summary: This study identified and characterized the vertical distribution of microplastics in the sediment of Lake Taihu. The results showed that microplastics were present at all depths and their abundance may be underestimated. The main types of microplastics were fibers, primarily composed of polyamide, and the majority were white in color. The textile industry and fishery activities may be the sources of microplastics.
SUSTAINABLE ENVIRONMENT RESEARCH
(2022)
Article
Chemistry, Physical
Songhai Zheng, Jiajia Fan, Xiancai Lu
Summary: A low-cost and eco-friendly absorbent for phosphate removal was developed using an in-situ synthesis method. The high phosphate adsorption capacity of the absorbent was attributed to the presence of nanoscale lanthanum hydroxide flakes on the heated kaolinite surface. Chemical adsorption of phosphate followed by the precipitation of LaPO4 on the absorbent surface was observed.
APPLIED CLAY SCIENCE
(2023)
Article
Environmental Sciences
Jia Wang, Lijuan Zhang, Jiajia Fan, Yuezhong Wen