Article
Engineering, Chemical
Chia -Chang Lin, Ya -Jung Cheng
Summary: This study shows that the use of nZVI and H2O2 can effectively degrade sulfamethazine in water, with optimal degradation efficiency at pH 3. Increasing nZVI dosage and decreasing initial sulfamethazine concentration can enhance the degradation efficiency.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2021)
Article
Environmental Sciences
Tan Phat Chau, Kathirvel Brindhadevi, Ramakrishnan Krishnan, Mansour Ali Alyousef, Hesham S. Almoallim, Niwooti Whangchai, Surachai Pikulkaew
Summary: Zerovalent Iron Nanoparticles (MC-ZVI NPs) were synthesized from Musa coocinea peel extract using a novel synthesis technique, confirmed by UV-vis spectroscopy. The chemical and structural characterization of MC-ZVI NPs were performed using FTIR, SEM, and DLS techniques. The synthesized MC-ZVI NPs showed antimicrobial efficacy against bacteria and fungi, as well as free radical scavenging activity.
ENVIRONMENTAL RESEARCH
(2022)
Article
Chemistry, Physical
A. Cordova-Lizama, C. Carrera-Figueiras, A. Palacios, P. M. Castro-Olivera, J. Ruiz-Espinoza
Summary: This study investigates the effects of zero valent iron nanoparticles (NZVI) and cobalt (CoNP) on hydrogen production from anaerobic digestion of waste activated sludge. The results show that the addition of NZVI and CoNP can significantly increase hydrogen yield and promote the anaerobic digestion process of waste activated sludge.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Engineering, Environmental
Jing Yang, Xiaoqin Zhang, Jia Tang, Jinlan Li, Aiping Zhang
Summary: In this study, the addition of MoS2 enhanced the Fe-0/H2O2 Fenton-like system, resulting in efficient removal of refractory organic matter from landfill leachate. The MoS2/Fe-0/H2O2 system exhibited a strong synergistic effect and could remove a wide range of aromatic organics.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Chemistry, Physical
Paula M. Gomez-Largo, Carlos D. Miranda, Alejandra C. Villagran-Olivares, Carlos A. Lopez, Bibiana P. Barbero
Summary: This study presents a comprehensive investigation on the iron incorporation in cobalt-iron mixed oxides lattice and its impact on physicochemical and catalytic properties. The results demonstrate that the incorporation of iron can modify the crystal structure and properties of the catalyst, thus affecting its catalytic activity and stability.
MOLECULAR CATALYSIS
(2022)
Article
Engineering, Environmental
Cheryl S. Y. Yeap, Nhung H. A. Nguyen, Roman Spanek, Chin Chin Too, Vladimir Benes, Jan Provaznik, Miroslav Cernik, Alena Sevcu
Summary: Research has shown that nanoscale zero-valent iron (nZVI) used to remediate polluted aquifers can cause stress to bacteria. This study aimed to investigate the physiological and transcriptomic response of the bacterium Pseudomonas putida NCTC 10936 to nZVI and dissolved iron obtained from nZVI suspension. The results revealed that dissolved iron had a stronger physiological effect than nZVI, activating genes related to oxidative stress responses, antioxidant activity, and metabolism, while downregulating genes associated with sensing external stimuli. Despite the stress caused by dissolved iron, cell viability was not affected.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Green & Sustainable Science & Technology
Tielong Li, Xiao Li, Yaxin Teng, Haitao Wang, Hongwen Sun
Summary: Phosphorus-doped microscale zero-valent iron (P-mZVI) was prepared using ball milling, which significantly enhanced the dechlorination of trichloroethylene (TCE). The degradation rate of TCE doubled with P-mZVI, and the dechlorination pathway shifted towards hydrogenolysis, producing non-toxic products such as cyclohexene and phosphate. These products can potentially stimulate the growth and metabolism of microorganisms.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Environmental Sciences
Hao Cheng, Chao Huang, Ping Wang, Dingxun Ling, Xiaoyu Zheng, Haiyin Xu, Chongling Feng, Hao Liu, Min Cheng, Zhiming Liu
Summary: In this study, molybdenum sulfide (MoS2) was used as a co-catalyst to enhance the performance of the nanoscale zero-valent iron (nZVI) based Fenton-like process for Rhodamine B (RhB) degradation. The addition of MoS2 significantly accelerated H2O2 decomposition and increased the RhB degradation rate constant compared to the conventional Fenton process. Furthermore, the effective pH range was expanded to 9.0 with a high removal rate of RhB. The MoS2/nZVI system exhibited stability and reusability. The involvement of various reactive species, such as hydroxyl radicals, superoxide anions, and singlet oxygen, was confirmed through quenching tests and electron paramagnetic resonance. The toxicity of degradation products decreased after treatment, indicating the potential of this MoS2 co-catalytic nZVI-based Fenton-like process for organic wastewater treatment.
ENVIRONMENTAL RESEARCH
(2023)
Article
Chemistry, Physical
Sameena Naaz Malik, Rena, Sunil Kumar
Summary: This study found that adding optimized particle size nZVI and nIO can significantly improve the fermentative biohydrogen production rate and yield from molasses-based distillery wastewater, and also has a significant promoting effect on COD reduction.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Green & Sustainable Science & Technology
Wenjing Tian, Jianhao Li, Lirong Zhu, Wen Li, Linyan He, Li Gu, Rui Deng, Dezhi Shi, Hongxiang Chai, Meng Gao
Summary: The combination of CaO2 pretreatment and ZVI addition effectively enhances the anaerobic digestion of wheat straw by promoting hydrolysis and acidification processes, leading to increased biogas production. ZVI improves enzyme activity and provides electrons for the conversion of CaO2 to methane, resulting in higher methane content in the digesters.
Article
Chemistry, Physical
Shenghui Xie, Jiaxin Su, Jianxin Zhao, Haipeng Yang, Haixia Qian
Summary: This study investigates the improved catalytic activity of Fe3O4-decorated glassy zero-valent iron (GZVI) through a low-cost ball milling technique. The addition of 10% Fe3O4 to GZVI resulted in the best surface morphology and highest catalytic efficiency. The Fe3O4/GZVI catalyst exhibited excellent stability and reusability, achieving a 97.37% degradation of p-nitrophenol within 15 minutes. The formation of a galvanic cell between Fe3O4 and GZVI played a crucial role in promoting electron transfer and hydroxyl radical generation, thereby enhancing the pollutant degradation process.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Engineering, Environmental
Jiaqi Chen, Guannan Zhou, Mengjie Luo, Mingzhou Wang, Qi Li, Yiran Wang, Yang Mu
Summary: In this study, iron phosphides modified zero-valent iron (P-ZVI) was synthesized using a simple ball-milling method, which showed enhanced degradation of various contaminants compared to ZVI. The incorporation of phosphorus improved the electron transfer capability of ZVI and promoted the accumulation of atomic hydrogen (H*), resulting in favorable reductive reactivity of P-ZVI. The FePX species on the surface of P-ZVI played a crucial role in stabilizing atomic hydrogen by forming P-H* bonds and lowering H* adsorption energy. This study provides insights for the design and optimization of nZVI-based technology for water decontamination.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Environmental Sciences
Kai-Kai Wu, Lei Zhao, Zhong-Fang Sun, Zi-Han Wang, Chuan Chen, Hong-Yu Ren, Shan-Shan Yang, Nan-Qi Ren
Summary: This study investigated the effect of nanoscale zero-valent iron (nZVI) on hydrogen-assisted ex-situ biogas upgrading. The results showed that nZVI at the appropriate concentration could enhance the efficiency of biogas upgrading, increasing the biomethane purity and acetate yield. Microbial community analysis revealed the role of nZVI in the upgrading process.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Environmental Sciences
Cancan Qian, Jian Wu, Haodong Wang, Desong Yang, Jianghu Cui
Summary: nZVI treatment resulted in decreased soil pH value, redox potential, and Fe (II) content. It also significantly decreased the relative abundance of certain microbial communities related to carbon and nitrogen cycles. Additionally, nZVI treatment led to reduced grain yield and decreased protein content and essential nutrient levels in a dose-dependent manner. The metabolomics results indicated that nZVI interfered with the expression of lysine and glutathione by regulating antioxidant and protein synthesis pathways in rice.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Engineering, Environmental
Jingjing Zhan, Xinqi Yang, Xiujuan Zhang, Yuxin Wang, Xiyun Cai, Hongkun Chen
Summary: A biological precipitation method was developed to prepare S-nZVI with the in situ formation of ferrous disulfide on the surface of nZVI by sulfate-reducing bacteria. The obtained BP-S-nZVI particles showed excellent performance in TCE degradation without the need for harmful chemical sulfidating agents, making the preparation process more environmentally friendly.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)