Article
Engineering, Environmental
Menghan Sun, Liangzhi Zou, Pengcheng Wang, Xinfei Fan, Zonglin Pan, Yanming Liu, Chengwen Song
Summary: This study proposes a membrane-based Fenton process with immobilized nano zero valent iron (NZVI) in a CNT membrane for efficient degradation of pollutants. The Fe0-CNT catalytic membrane enhances the generation rate of (OH)-O-center dot through the cycle of ferrous and ferric ions, while also improving mass transfer. The membrane shows high removal efficiency for various organic contaminants and is not significantly affected by environmental factors, suggesting its potential for wastewater treatment applications.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
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
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, Physical
Diana Rakhmawaty Eddy, Dian Nursyamsiah, Muhamad Diki Permana, Solihudin Solihudin, Atiek Rostika Noviyanti, Iman Rahayu
Summary: This study aims to synthesize zero-valent iron (ZVI) using biological reducing agents from tea-leaf extract and apply the Fenton method to degrade dyes in textile waste. The results show that ZVI 1:1 achieved the best degradation results with a 100% decrease in color intensity of the dye mixture and degradation percentages of 100% and 66.47% for rhodamine B and methyl orange, respectively, according to LC-MS analysis.
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
Yingying Xie, Guining Lu, Xueqin Tao, Zhen Wen, Zhi Dang
Summary: A novel collaborative strategy using nano zero valent iron (nZVI) assisted by schwertmannite (Sch) was designed for enhanced removal of Cr(VI). Batch experiments showed that nZVI/Sch-AP had better removal performance for Cr (VI) than nZVI/Sch-CO. The study provides new insights into the elimination of Cr(VI) from wastewater by nZVI/Sch, especially in acid mine drainage.
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
Rumin Yang, Guilu Zeng, Zhiqiang Xu, Zhengyuan Zhou, Zhikang Zhou, Meesam Ali, Yong Sun, Xuecheng Sun, Jingyao Huang, Shuguang Lyu
Summary: This study focuses on the role of nanoscale zero-valent iron (nZVI) in the Fenton-like process for removing polycyclic aromatic hydrocarbons (PAHs). The results show that nZVI addition can enhance the degradation of naphthalene (NAP) and promote the decomposition of hydrogen peroxide (H2O2) for NAP degradation. Multiple tests reveal that nZVI can release Fe (II) and promote the Fe (II)/Fe (III) redox cycle to enhance NAP degradation. The study also proposes three possible NAP degradation pathways based on the major degradation intermediates detected.
WATER ENVIRONMENT RESEARCH
(2022)
Article
Engineering, Environmental
Jia-Qi Chen, Guan-Nan Zhou, Rong-Rong Ding, Qi Li, Han-Qing Zhao, Yang Mu
Summary: In this study, the performance and mechanism of the S-nZVI/Fe2+ system for oxygen activation to remove emerging contaminants (ECs) were comprehensively explored. The S-nZVI/Fe2+ system showed significantly higher kinetic rate constant for the oxidative degradation of ECs compared to other systems, and demonstrated high efficiency in EC mineralization and detoxification. The addition of Fe2+ promoted the corrosion of S-nZVI, leading to improved O2 activation and consecutive single-electron O2 activation for & BULL;OH production. The pH-insensitive Fenton-like degradation process by S-nZVI/Fe2+ indicated its robust performance over a wide pH range. This study provides valuable insights for the practical implementation of nZVI-based technology in achieving high-efficiency removal of ECs from water.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
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
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
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
Engineering, Environmental
Limin Duan, Huihao Jiang, Wenhao Wu, Daohui Lin, Kun Yang
Summary: Introducing crystal defects into iron-based metal-organic frameworks (Fe-MOFs) is a promising strategy to enhance Fenton-like performance. However, developing a facile and effective strategy to construct defective Fe-MOFs as highly efficient Fenton-like catalysts is still challenging. In this study, MIL-100(Fe) (Def-MIL-100 (Fe)) with missing ligand defects was synthesized by a simple heterogeneous reaction, and it exhibited significantly higher Fenton-like activity compared to the perfect MIL-100(Fe). The missing ligand defects played a key role in promoting fast H2O2 adsorption, accelerating electron transfer, and improving OH generation and utilization efficiency.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Engineering, Environmental
Qihao Chen, Liang Wan, Hang Zhou, Fangzhou Luo, Lei Lei, Ning Wang
Summary: In this study, a photoelectro-Fenton microfluidic reactor was designed to efficiently decompose stubborn Nanoplastics (NPs). The reactor, equipped with a MOF-derived porous Fe2O3 material, exhibited unprecedented degradation efficiency and excellent reusability. The study also revealed the synergistic effect of various oxidation pathways. The proposed platform shows great potential for industrial NPs removal.
JOURNAL OF WATER PROCESS ENGINEERING
(2023)
Article
Biology
Palanisamy Gowthami, Karuppan Muthukumar, Manickam Velan
BIOCONTROL SCIENCE
(2015)
Article
Engineering, Environmental
Govindarajan Ramadoss, Karuppan Muthukumar
CHEMICAL ENGINEERING JOURNAL
(2015)
Article
Environmental Sciences
S. R. Vijayalakshmidevi, Karuppan Muthukumar
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2015)
Article
Biotechnology & Applied Microbiology
V. P. Manjamadha, Karuppan Muthukumar
BIOPROCESS AND BIOSYSTEMS ENGINEERING
(2016)
Article
Green & Sustainable Science & Technology
Govindarajan Ramadoss, Karuppan Muthukumar
Article
Acoustics
Govindarajan Ramadoss, Karuppan Muthukumar
ULTRASONICS SONOCHEMISTRY
(2016)
Article
Chemistry, Physical
Balasubramani Ramprakash, Karuppan Muthukumar
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2018)
Article
Biochemistry & Molecular Biology
Rajendran Lakshmidevi, Nagarajan Nagendra Gandhi, Karuppan Muthukumar
APPLIED BIOCHEMISTRY AND BIOTECHNOLOGY
(2020)
Article
Chemistry, Physical
Madhumitha Rajakumar, Matheswaran Manickam, Nagarajan Nagendra Gandhi, Karuppan Muthukumar
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2020)
Article
Energy & Fuels
Rajendran Lakshmidevi, Nagarajan Nagendra Gandhi, Karuppan Muthukumar
Summary: This study investigates the influence of immobilized bacterial anode on the performance of algal-assisted microbial fuel cell (AAMFC) that treats dairy wastewater. The results show that using immobilized bacteria can improve power density, COD removal, and VFA recovery in the fuel cell.
BIOMASS CONVERSION AND BIOREFINERY
(2022)
Article
Biotechnology & Applied Microbiology
Lakshmidevi Rajendran, Nagendra Gandhi Nagarajan, Muthukumar Karuppan
BIOCHEMICAL ENGINEERING JOURNAL
(2020)
Article
Energy & Fuels
Khadeeja Parveen Kallarakkal, Karuppan Muthukumar, Arun Alagarsamy, Arivalagan Pugazhendhi, Samsudeen Naina Mohamed
Summary: Biobutanol is a renewable eco-friendly fuel with high energy input potential. Increasing carbohydrate content in algal biomass can boost biobutanol production, as demonstrated by experimental results showing higher production efficiency under deprived conditions. The study highlights the compatibility of Oscillatoria sp. in wastewater with nutrient alterations for biobutanol production.
Article
Chemistry, Multidisciplinary
Kartikeya Shukla, A. Arunagiri, K. Muthukumar
Summary: This study synthesized glycerol and succinic acid-based polyesters and characterized them using various techniques. The addition of different dicarboxylic acids increased the thermal stability of poly (glycerol succinate). The hydrolytic degradation of polyesters was found to be influenced by the pH of the medium, with significant degradation occurring under basic conditions.
JOURNAL OF THE INDIAN CHEMICAL SOCIETY
(2023)
Article
Energy & Fuels
V. S. Neeraj, M. Yashwanth, B. Pavan Kalyan, Kartikeya Shukla, A. Arunagiri, K. Muthukumar
Summary: This study investigates the electrochemical degradation of commercial kitchen wastewater. The results show that the operating factors have a significant impact on COD reduction, with the optimum current density and electrolyte concentration being 2 A/dm2 and 2 g/L, respectively. The treatment is enhanced by incorporating mechanical stirring and ultrasound irradiation.
CHEMICAL ENGINEERING AND PROCESSING-PROCESS INTENSIFICATION
(2023)
Article
Engineering, Chemical
Ashvini More, V. S. Neeraj, A. Arunagiri, K. Muthukumar
Summary: This study investigated the treatment of synthetic dye wastewater using a sono-electrochemical reactor. The results showed that the addition of NaCl as a supporting electrolyte resulted in higher decolorization. Increasing the applied current density and decreasing the pH also improved the color removal. The sono-electrochemical process demonstrated better decolorization and COD reduction compared to the electrochemical process. The combined treatment under optimum conditions showed promising results in degrading recalcitrant compounds in wastewater.
INDIAN CHEMICAL ENGINEER
(2023)