Article
Engineering, Environmental
Juntong Liu, Ruoyu Sun, Yinsu Wu, Shengtao Xing
Summary: In this study, MnO2/MnFe2O4 catalyst was successfully synthesized and used for the regeneration of GAC. The results showed that MnO2/MnFe2O4 exhibited high catalytic activity for GAC regeneration and effectively removed the adsorbed OFL. The regeneration efficiency of various organic pollutants was high at neutral pH, and MnO2/MnFe2O4 and GAC showed good stability and reusability.
JOURNAL OF WATER PROCESS ENGINEERING
(2023)
Article
Environmental Sciences
Ziwei Wang, Yannan Tan, Xiaoguang Duan, Yongbing Xie, Haibo Jin, Xiaowei Liu, Lei Ma, Qiangyang Gu, Huangzhao Wei
Summary: When a membrane is used to treat dye wastewater, the dye molecules accumulate at the membrane surface over time, causing a decrease in membrane flux. Pretreating dye wastewater with layered double hydroxide (LDH) to degrade organic pollutants has been thoroughly investigated in this study. LDH activates peroxymonosulfate (PMS) to produce oxidative free radicals, enhancing the reaction rate. Singlet oxygen (O-1(2)), sulfate radicals (SO4 center dot-), and hydroxyl radicals (center dot OH) were identified as the reactive species. The CoFe-LDH/PMS system showed a high degradation efficiency for Acid Red 27 dye with strong resistance to inorganic ions and pH.
Article
Environmental Sciences
Yuanyuan Li, Jingbo Feng, Yan Zhang, Chen Wang, Junjie Hao, Yukun Wang, Yinyin Xu, Xiuwen Cheng
Summary: By preparing a novel nanocomposite catalyst (CC@Co3O4) derived from MOFs-COFs and using PMS activation, the catalytic performance for the degradation of bisphenol A (BPA) and rhodamine B (RhB) was significantly improved.
Article
Energy & Fuels
Bingxing Zhu, Yang Yu, Yindi Ding, Shifu Ge
Summary: Fe3O4-loaded biochar derived from anaerobic granular sludge (AnGS) was synthesized as a catalyst for peroxymonosulfate (PMS) activation. The biochar exhibited excellent magnetic properties and catalytic activity, and showed potential for organic pollutants removal and PMS activation. At a pyrolysis temperature of 800 degrees C, the biochar had significantly enhanced surface area and microporosity.
BIOMASS CONVERSION AND BIOREFINERY
(2022)
Article
Environmental Sciences
Yong-Yoon Ahn, Jungwon Kim, Kitae Kim
Summary: This study demonstrates the positive effects of dissolved bicarbonate and carbonate anions on peroxymonosulfate (PMS) induced oxidation and the remarkable acceleration of the reaction by freezing. The unique reaction between bicarbonate and PMS in frozen conditions and the proposed oxidation mechanisms were highlighted in this research.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Review
Green & Sustainable Science & Technology
Jingwen Sun, Ting Wu, Zhifeng Liu, Binbin Shao, Qinghua Liang, Qingyun He, Songhao Luo, Yuan Pan, Chenhui Zhao, Danlian Huang
Summary: This paper reviews the advantages, mechanisms, and influencing factors of peroxymonosulfate (PMS) activation induced by spinel ferrite nanoparticles (NPs) and their nanocomposites (NCs) for organic pollutant removal. The challenges and directions for improvement are also discussed.
JOURNAL OF CLEANER PRODUCTION
(2022)
Review
Chemistry, Multidisciplinary
Liangyun Hao, Junkai Zhang, Jia Liu, Yuting Min, Chunguang Chen
Summary: Advanced oxidation processes (AOPs) based on activated peroxymonosulfate (PMS) are effective in removing organic pollutants from water due to their high oxidation ability, wide pH range, good selectivity, and absence of secondary pollution. Carbon-based materials, as green catalysts, can activate persulfates to degrade organic pollutants by generating radical and non-radical active species. Compared to transition metal catalysts, carbon-based materials have advantages such as low cost, non-toxicity, acid and alkali resistance, large specific surface area, and scalable surface charge, making them suitable for selective control of water pollutants.
Article
Chemistry, Multidisciplinary
Liquan Wang, Ruyi Li, Yimin Zhang, Yuexiang Gao, Xian Xiao, Zhiwei Zhang, Ting Chen, Yuan Zhao
Summary: In this study, oxygen-doped carbon nitride (O-C3N4) was prepared and used to activate peroxymonosulfate (PMS) for tetracycline (TC) degradation. The oxygen atom replaced the nitrogen atom in the triazine structure, improving the catalyst's specific surface area, pore structure, and electron transport capacity. The 0.4 O-C3N4/PMS system showed the best physicochemical properties and higher TC removal rate compared to the unmodified C3N4/PMS system. The O-C3N4/PMS system exhibited free radical and non-radical pathways for TC degradation, with singlet oxygen (O-1(2)) identified as the main active species.
Article
Chemistry, Multidisciplinary
Peiyuan Xiao, Ying Wang, Huanzheng Du, Zhiyong Yan, Bincheng Xu, Guangming Li
Summary: Burning and dumping textile wastes have caused serious damage to the environment and are wasteful of resources. This study demonstrates the use of textile wastes to produce a valuable and recyclable catalyst for the removal of bisphenol A from water.
Article
Engineering, Environmental
Yaowen Gao, Yue Zhu, Tong Li, Zhenhuan Chen, Qike Jiang, Zhiyu Zhao, Xiaoying Liang, Chun Hu
Summary: Single-atom iron catalyst prepared via a cascade anchoring method exhibits exceptional catalytic activity in peroxymonosulfate (PMS) conversion for organic pollutant oxidation, with the high-activity origin attributed to the Fe-pyridinic N-4 moiety that significantly increases active sites for PMS activation.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2021)
Article
Engineering, Chemical
Chuanyi Xu, Qingyou Liu, Meng Wei, Shihui Guo, Yueping Fang, Zhuobiao Ni, Xixian Yang, Shengsen Zhang, Rongliang Qiu
Summary: A novel advanced oxidation system based on surface oxidized metallic cobalt nanoparticles (Co@CoO) encapsulated with N-doped carbon nanotubes (NCT) was designed for the activation of peroxymonosulfate (PMS) to purify organic wastewater. The system showed excellent performance in degrading various organic pollutants.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Environmental Sciences
Yi-meng Huang, Guang Li, Mingzhen Li, Jijie Yin, Na Meng, Di Zhang, Xiao-qiang Cao, Fan-ping Zhu, Ming Chen, Lin Li, Xian-jun Lyu
Summary: In this study, N-doped kelp biochar (KB) materials were prepared from kelp biomass, showing excellent catalytic degradation ability under the influence of PMS. The non-radical pathways dominated the degradation process, allowing the system to perform well over a wide pH range. Reusability experiments confirmed the stability of the material, which could restore its catalytic performance through low-temperature pyrolysis.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Engineering, Environmental
Guanhong Liu, Jiahao Qian, Yu Zhang, Kuangfei Lin, Fuwen Liu
Summary: This study focused on the thermal treatment of PFOA contaminated soil, using fresh activated carbon (FAC) and modified activated carbon (NAC) as heterogeneous catalysts. The results showed that a significant reduction in PFOA levels was achieved with the use of FAC/PMS and NAC/PMS at 60°C.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Engineering, Environmental
Juntong Liu, Ruoyu Sun, Yinsu Wu, Shengtao Xing
Summary: In this study, CuOX/MnFe2O4 was synthesized and used as a catalyst for the regeneration of GAC. The results showed that CuOX/MnFe2O4 exhibited high catalytic activity, with singlet oxygen being the dominant reactive species for the degradation of organic pollutants.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Chemistry, Multidisciplinary
Dapeng Sun, Chuang Li, Shengsen Lu, Qingfeng Yang, Chiquan He
Summary: In this study, a novel core@shell magnetic nanocomposite Fe3O4@CoFe-LDH was successfully synthesized and employed as an efficient catalyst for removal of azo-dye AO7. The nanocomposite showed good ferromagnetism and a perfect crystalline structure, with good adaptability in a wide pH range. The Fe3O4@CoFe-LDH also exhibited outstanding stability and recyclability, making it a promising candidate for remediation of wastewater contaminated with synthetic dyes.