Article
Engineering, Chemical
Xianke Sun, Yanxin Qin, Wen Zhou
Summary: This paper studied the degradation of amoxicillin by ultrasound-zero valent iron activated sodium persulfate and optimized the best degradation conditions. The research found that ultrasonic power, sulfate concentration, and zero-valent iron dosage have significant impacts on the removal efficiency of amoxicillin.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Chemistry, Physical
Minda Yu, Xuhui Mao, Xiaosong He, Mingxia Zheng, Xu Zhang, Jing Su, Beidou Xi
Summary: This study demonstrates the enhancement of peroxide activation efficiency and organic contaminant degradation by mechanically silicified microscale zero-valent iron (mZVI). The silicification process improves the generation of reactive intermediates, resulting in a significant increase in sulfamethazine removal rate. Continuous generation of ferrous ions in the Si-mZVI(bm)/PDS system after silicification contributes to the excellent performance of peroxide activation.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Engineering, Environmental
Jinyu Hou, Yun Zhang, Xianghua Wu, Linmeng Liu, Yucheng Wu, Wuxing Liu, Peter Christie
Summary: The study found that zero-valent iron (ZVI) can promote the biomineralization of lindane, but it has a certain inhibitory effect on the growth and functions of soil bacterial community. Metagenomic analysis revealed that the genes involved in the degradation of lindane were upregulated, but the presence of genes responsible for lindane dechlorination was not confirmed. In addition, the benzoate biodegradation pathway linked to the downstream catabolism of lindane was enhanced.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Environmental Sciences
Inyoung Kim, Daniel K. Cha
Summary: The study found that ZVI-supported microbial denitrification is more sustainable at lower temperatures, and it becomes a more dominant reaction for nitrate removal in microbial-ZVI systems at low temperatures.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Chemistry, Physical
Ge Gao, Lei Zhang, Yixin Shi, Shengjiong Yang, Gen Wang, Huining Xu, Dahu Ding, Rongzhi Chen, Pengkang Jin, Xiaochang C. Wang
Summary: The study found that the microscopic galvanic cell (mGC) exhibited higher Fe(II) release performance compared to ordinary nanoscale-ZVI (nZVI), resulting in improved Cr(VI) removal efficiency. Density functional theory (DFT) revealed that the close proximity of cathode and anode in mGC enhanced the galvanic corrosion of Fe(0). Additionally, hydroxyl radicals generated by a series of side-reactions slightly hindered the reduction of Cr(VI) in the system.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Engineering, Environmental
Hao Cui, Yu Tian, Jun Zhang, Shanshan Ma, Lipin Li, Wei Zuo, Lei Zhang, Tong Wang
Summary: The study proposes a novel two-stage US-ZVI/PS process that can reduce ZVI usage and energy consumption significantly compared to traditional methods. By controlling the release of Fe2+ within a reasonable range, the efficiency of sulfadiazine removal is greatly enhanced.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Environmental Sciences
Tong Wei, Xin-Sheng Zhu, Qi-Xue Wang, Ke-Ke Xu, Fu-Kai Tang, Ming-Zhu Zhang, Shi-Wen Lv, Feng Ge
Summary: In this study, zero valent iron (ZVI) derived from Fe-based prussian blue analogues was successfully synthesized and exhibited excellent charge transfer properties. The ZVI-2 catalyst effectively activated peroxymonosulfate (PMS), leading to rapid degradation of phenol with a removal efficiency of 94.9% within 24 minutes. The ZVI-2/PMS oxidation system showed good stability and strong anti-interference capability, making it a promising candidate for wastewater treatment.
ENVIRONMENTAL RESEARCH
(2023)
Article
Chemistry, Multidisciplinary
Xiang Wang, Rufeng Deng, Wenbo Shen, Jianbo Huang, Qun Li, Yuanchao Zhao, Jinzhong Wan, Yan Zhou, Tao Long, Shengtian Zhang
Summary: The study demonstrated that the nZVI/BC activated PS system could achieve over 90% removal of three NCB isomers at a low initial concentration. The combination of nZVI/BC composite and PS showed superior performance to using PS alone, with optimal treatment conditions being a Fe:BC ratio of 1:1, Fe amount of 6 mmol/L, and a mole ratio of Fe to persulfate of 1:1.
FRONTIERS IN CHEMISTRY
(2021)
Article
Engineering, Environmental
Waseem Hayat, Ze-hua Liu, Yi-ping Wan, Xiaodong Du, Shaobin Huang, Yongqing Zhang
Summary: The ZVI-PS system showed high efficiency in degrading FEN, with influential parameters such as ZVI dosage, PS concentration, initial pH, FEN concentration, and initial temperature.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Environmental Sciences
S. Fernandez-Velayos, J. Sanchez-Marcos, A. Munoz-Bonilla, P. Herrasti, N. Menendez, E. Mazario
Summary: A method using 3D printing technology to prepare ZVI@PLA catalysts without post etching treatment was reported. The use of non-contact heating by magnetic induction (MIH) was shown to reactivate the surface of the catalyst, allowing for the ZVI@PLA catalyst to be reused up to 10 cycles with maintained efficiency. On the other hand, traditional thermal bath heating resulted in a gradual decrease in kinetic constant over 10 cycles.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Engineering, Chemical
Yufeng Du, Min Dai, Iffat Naz, Xiangying Hao, Xixi Wei, Rong Rong, Changsheng Peng, Imran Ali
Summary: In the present research, zero-valent iron (ZVI) synthesized by carbothermal reduction method was studied for its formation mechanism and application as a catalyst for ciprofloxacin degradation. The experimental parameters including pH, Fe@BC dosage, PS concentration, and temperature on ciprofloxacin degradation were thoroughly investigated. Results showed that Fe@BC has excellent catalytic performance, removing 90.78% of ciprofloxacin within 120 min. Free radical quenching experiments confirmed the reaction mainly occurs on the Fe@BC surface.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Environmental Sciences
Xingya Wei, Changjun Li, Naiyun Gao
Summary: This study demonstrated that sulfate radical produced from persulfate by zero-valent iron can effectively degrade acyclovir. The optimal degradation conditions were identified and the main degradation pathways and intermediates were proposed. Although the mineralization rate was not high, ZVI/PS oxidation was proven to be a viable treatment method for acyclovir-induced water pollution.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Engineering, Environmental
Junxue Song, Wei Fang, Jing Lai, Bingdi Cao, Tao Zhang, Zhenzhen Xu
Summary: This study investigated the efficiency of fecal sludge conditioning using peroxydisulfate (PDS) activated by zero-valent iron (ZVI) . The ZVI/PDS coupling greatly improved the dewaterability of fecal sludge and the quality of the supernatant. The combination of 0.15 g/g TS ZVI and 0.2 g/g TS PDS reduced the capillary suction time (CST) and supernatant turbidity of fecal sludge up to 97% and 73% respectively in 10 min.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Environmental Sciences
Bahareh Montazeri, Olga Koba-Ucun, Idil Arslan-Alaton, Tugba Olmez-Hanci
Summary: The study compared the degradation of iprodione (IPR) by UV-C light, zero-valent iron (ZVI), and zero-valent aluminum (ZVA) activated persulfate (PS) oxidation processes in distilled water (DW) and simulated urban wastewater (SWW). The results showed that ZVI/PS treatment was the most effective oxidation process in SWW, with the treatment performance being strongly influenced by the constituents of SWW, and UV-C/PS treatment being the most sensitive to it.
Article
Engineering, Chemical
Ningfan Song, Zihan Chen, Jinghua Shi, Dezhi Shi, Li Gu
Summary: The study demonstrated that the Pd/Cu bimetallic catalyst supported on a chelating resin can effectively reduce nitrate to N2 under neutral conditions, without generating other intermediate compounds or by-products, showing a high selectivity for N2.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)