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
Materials Science, Multidisciplinary
Hangdao Qin, Hao Cheng, Sizhan Wu, Jing Chen, Jiming Huang, Wei Shi, Hui Li
Summary: A magnetic Fe0/MnFe2O4 nanocomposite was used to activate peroxymonosulfate (PMS) for the degradation of cefadroxil (CDX) in water. The Fe0/MnFe2O4 showed higher catalytic activity than pure Fe0 and MnFe2O4. The Fe0/MnFe2O4/PMS system demonstrated a good potential for eliminating antibiotics in the aquatic environment with 93.4% CDX removal and 58.2% TOC removal achieved within 120 minutes.
Article
Engineering, Environmental
Hui Jin, Zhizhi Cang, Wei Ding, Wentong Wu, Hongkun Ma, Chenxi Wang, Zhongwei Qi, Zifu Li, Lingling Zhang
Summary: Sulfidated ZVI activated persulfate system shows high efficiency in removing antibiotic resistant bacteria and genes, suitable for water treatment. The system has a significant inactivation effect on antibiotic resistant E. coli, mainly achieved through SO4•- and HO• radicals.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Environmental Sciences
Eslam Salama, Kenneth Mensah, Marwa ElKady, Hassan Shokry, Mahmoud Samy
Summary: In this study, pure zero-valent iron (ZVI) supported on silica and starch was used to enhance the activation of persulfate (PS) for tetracycline degradation. The synthesized catalysts were characterized and their physical and chemical properties were evaluated. The addition of light and the modified ZVI-Si/PS system improved the degradation performance of tetracycline. The optimal operating parameters were determined by response surface methodology, and the degradation pathway and mechanism were explained. Tetracycline degradation was influenced by the presence of inorganic ions and dissolved organic matter in different matrices.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Engineering, Environmental
Qing Zhao, Xiaomin Li, Shengtao Xiao, Weihua Peng, Wenhong Fan
Summary: Integrated-remediation technologies using sulfate reducing bacteria (SRB) and nano zero valent iron (nZVI) have shown great potential in immobilizing Cd in contaminated sediments, particularly with higher doses of nZVI. The study identified five typical SRBs that play a significant role in transforming Cd speciation and stabilizing it into sulfide precipitation through dissimilatory sulfate reduction (DSR). The results suggest that nZVI may stimulate SRB bio-immobilization by providing electrons and enhancing enzyme activities during DSR, leading to the formation of Cd-S-Fe complexes.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Environmental Sciences
Ruirui Sun, Jiapeng Yang, Rong Huang, Chongqing Wang
Summary: Nano zero-valent iron loaded porous carbon derived from microplastics was designed as a heterogeneous catalyst for degradation of persistent organic pollutants. The catalyst exhibited high carbon yield and large surface area, leading to effective degradation of various pollutants. Hydroxyl radicals generated from the activation of H2O2 enhanced by zero-valent iron in Fe/MMPC were identified as the predominant species in the catalytic reactions.
Article
Environmental Sciences
Changsheng Du, Nan Xu, Zihan Yao, Xu Bai, Yuxi Gao, Lei Peng, Baohua Gu, Jiating Zhao
Summary: This study investigates the effects of sulfate and phosphate on the removal kinetics of hexavalent chromium (Cr(VI)) by different nano zero-valent iron materials. The results reveal that sulfate promotes the reaction while phosphate inhibits it. When both sulfate and phosphate are present, the inhibition effect of phosphate is stronger than the promotion effect of sulfate. This study provides new insights into the efficient removal of Cr(VI) from contaminated water using nano zero-valent iron.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Engineering, Environmental
Shambhu Kandel, Yelena P. Katsenovich, Daria Boglaienko, Hilary P. Emerson, Tatiana G. Levitskaia
Summary: The removal of TcO4 by Fe-0 under oxidative conditions is affected by the initial pH, with the fastest removal rate observed at pH(i) 7 and the slowest at pH(i) 10.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
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
Engineering, Environmental
Nuntiya Paepatung, Nimaradee Boonapatcharoen, Warinthorn Songkasiri, Hidenari Yasui, Chantaraporn Phalakornkule
Summary: This study investigates the effects of zero-valent iron (ZVI) on the growth and activities of methane-producing archaea and sulfate-reducing bacteria in the anaerobic digestion process. The results show that ZVI not only provides extra electrons for methane production, but also reduces the inhibition of methane-producing archaea by co-precipitating sulfides.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Environmental Sciences
Weiquan Li, Yuhang Yang, Xueying Lin, Weizhao Yin, Zhanqiang Fang, Ping Li, Jinhua Wu
Summary: In this study, zero-valent iron (ZVI) and anaerobic bacteria were used to remediate Cd(II)-polluted soil, mediated by sulfate (SO42-). The hydrogen-autotrophic sulfate reduction resulted in severe corrosion on sulfate-mediated biotic ZVI, forming massive corrosive products which played a crucial role in immobilizing Cd (II). Compared to the sulfate-mediated ZVI system, this integrated system achieved a 4.9-fold increase in aqueous Cd(II) removal and converted over 53% of easily available Cd(II)-fractions to stable forms. Increasing SO42- concentration and ZVI dosage showed a positive correlation with Cd(II) immobilization, suggesting the essential role of hydrogen-autotrophic desulfuration. It was found that hydrogen-autotrophic desulfuration could accelerate iron corrosion, promote reactive mineral formation, and generate CdS precipitates to effectively immobilize Cd(II). The reaction was favorable at neutral pH. This study highlights the promoted effect of hydrogen-autotrophic desulfuration on ZVI corrosion for Cd(II) immobilization and provides a practical technique for remediating Cd(II)-polluted soil.
Article
Engineering, Environmental
Bo Wang, Chi Zhu, Dan Ai, Zhiping Fan
Summary: In this study, green nano zero-valent iron biochar was prepared using green synthesis method with green tea extraction solution as reducing agent and green tea residues as raw material. This material showed improved dispersibility of Fe0, prevented agglomeration, and promoted PNP degradation. The system had high oxidation resistance, effective catalytic degradation pathways, and good removal effect on PNP.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Engineering, Environmental
Dandan Dong, Oh Kyung Choi, Jae Woo Lee
Summary: Both zero valent iron (ZVI) and nano-scaled ZVI (nZVI) can be used for biomethanation of CO2 under anaerobic conditions, but ZVI shows more effective and stable CO2 conversion with less loss.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Environmental Sciences
Huiping Tang, Wencai Cheng, Yunpeng Yi, Congcong Ding, Xiaoqin Nie
Summary: Fe-0/APTES-GO composites show promising results in removing U(VI) due to the reducing activity of Fe-0 and abundant functional groups on the composites. Batch experiments demonstrate the effective removal of uranium by Fe-0/APTES-GO composites.
Article
Acoustics
Nastaran Azizollahi, Ensiyeh Taheri, Mohammad Mehdi Amin, Arvin Rahimi, Ali Fatehizadeh, Xun Sun, Sivakumar Manickam
Summary: In this research, hydrodynamic cavitation (HC) and zero-valent iron (ZVI) were used to generate sulfate radicals for the degradation of Direct Red 83 (DR83). The degradation efficiency of HC/ZVI/sulfite process was highly dependent on the solution pH and the dosage of ZVI and sulfite. The HC/ZVI/sulfite treatment showed a significantly higher degradation constant and contribution of radicals compared to the individual processes.
ULTRASONICS SONOCHEMISTRY
(2023)
Article
Environmental Sciences
Meicheng Wang, Lizhi He, Min Wang, Lin Chen, Sicong Yao, Wenju Jiang, Yao Chen
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2019)
Article
Chemistry, Physical
Xue Ye, Xia Jiang, Lin Chen, Wenju Jiang, Hualin Wang, Wanglai Cen, Shenggui Ma
APPLIED SURFACE SCIENCE
(2020)
Article
Energy & Fuels
Qiuxu Ma, Wenhua Chen, Ziheng Jin, Lin Chen, Qiying Zhou, Xia Jiang
Summary: The use of urea phosphate in synthesizing biochar adsorbent resulted in significant improvements in both yield and adsorption performance, mainly attributed to the doping of nitrogen functional groups due to the release of phosphoric acid during synthesis, thereby significantly enhancing the adsorption capacity for CO2 and H2S.
Article
Environmental Sciences
Lin Chen, Jin Yuan, Tianbao Li, Xia Jiang, Shenggui Ma, Wanglai Cen, Wenju Jiang
Summary: In this study, nitrogen-rich hierarchical porous carbons (NPCs) were synthesized from cypress saw-dust via a one-step strategy, showing excellent performance for H2S removal with high sulfur capacity and regeneration ability. The NPCs with carbon nitride (CN) loading exhibited a hierarchical porous structure with high nitrogen content, identified as active sites for H2S adsorption. These results demonstrate that NPCs are promising catalysts for efficient H2S removal with low cost and high reusability.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Engineering, Environmental
Jianping Wu, Wenhua Chen, Lin Chen, Xia Jiang
Summary: In this study, N-doped biomass derived activated carbon (NBAC) with superhigh content of surface N atoms (17.2 at.%) and microchannel structure was successfully prepared for catalytic oxidation of H2S under room temperature. The superhigh content of N atoms provided massive active sites for the oxidation of H2S, while the microchannel structure enhanced the mass transfer of reactants and product elemental sulfur, facilitating the continuous catalytic oxidation of H2S.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Engineering, Chemical
Lin Chen, Xia Jiang, Wenhua Chen, Zhongde Dai, Jianping Wu, Shenggui Ma, Wenju Jiang
Summary: N-doped mesoporous carbon is an efficient metal-free catalyst for hydrogen sulfide removal. This study presents a facile and green synthesis of N-doped interconnected mesoporous biochars. The method shows higher removal efficiency and more active sites compared to traditional synthesis methods. It can also be easily applied to other waste biomass.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Engineering, Chemical
Lin Chen, Xia Jiang, Ruzhen Xie, Yuzhou Zhang, Yan Jin, Wenju Jiang
SEPARATION AND PURIFICATION TECHNOLOGY
(2020)
Article
Chemistry, Multidisciplinary
Guangzhi Xin, Min Wang, Lin Chen, Yuzhou Zhang, Meicheng Wang, Wenju Jiang, Yao Chen