Article
Environmental Sciences
Meesam Ali, Ali Shan, Yong Sun, Xiaogang Gu, Shuguang Lyu, Yanbo Zhou
Summary: In this study, the use of PVA@nCP/Fe(II)/CA system shows promising TCE degradation outcomes in actual groundwater, demonstrating great potential for prolonged benefits in the remediation of TCE polluted groundwater.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Environmental Sciences
Christina Makri, Thomas J. Aspray
Summary: This study demonstrates the use of an automated respirometer measuring CO2 production as a rapid and reliable method for selecting activator type and concentration in ISCO projects, providing greater confidence in treatability testing and reagent efficiency.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Environmental Sciences
Peng Wang, Zhiqiang Xu, Yulong Liu, Xianxian Sheng, Jiaqi Dong, Zhanpeng Lu, Ali Shan, Shuguang Lyu
Summary: This study demonstrated that peroxymonosulfate (PMS) activated by Fe(II)/citric acid (CA) could effectively degrade trichloroethylene (TCE) in the presence of surfactants, with the sulfate radical (SO4•−) identified as the major reactive species responsible for TCE degradation. The study also investigated the influence of pH and inorganic anions on TCE removal, and confirmed the practical potential of the PMS/Fe(II)/CA process in remediating TCE-contaminated groundwater.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Engineering, Environmental
Ayesha Idrees, Ali Shan, Waqas Qamar Zaman, Ali Mohsin, Zain Abbas, Tanvir Shahzad, Atif Shakeel, Shuguang Lyu
Summary: M-metal (Ca and Cu) doped Ca-Fe2O3 and Cu-Fe2O3 catalysts were synthesized using solvothermal method. The catalytic performance of these catalysts for trichloroethylene (TCE) removal were improved by M-metal doping, leading to significantly higher TCE removal efficiency. Doping created defective structures and increased oxygen vacancies, resulting in the generation of abundant active species during the activation process.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Environmental Sciences
Peng Wang, Zhiqiang Xu, Guilu Zeng, Shuguang Lyu
Summary: This study investigated the degradation of trichloroethylene (TCE) using peroxymonosulfate (PMS) activated by nano-zero-valent iron (nZVI) in the presence of tween-80 (TW-80) or sodium dodecyl sulfate (SDS). Results showed that 87.6% of TCE (with 1.3 g L-1 TW-80) and 89.7% of TCE (with 2.3 g L-1 SDS) were degraded by PMS/nZVI, with significant dechlorination.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Engineering, Environmental
Usman Farooq, Fei Wang, Jingyi Shang, Malik Zeeshan Shahid, Waseem Akram, Xinhai Wang
Summary: This study developed an efficient and environmentally friendly method for remediating groundwater contaminants using a natural organic ligand cysteine. By improving the redox cycling of iron species, the method achieved enhanced degradation of trichloroethylene (TCE) under neutral conditions.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Environmental Sciences
Jun Hou, Anqi Wang, Lingzhan Miao, Jun Wu, Baoshan Xing
Summary: This study systematically investigated the effect of NO3- on the degradation of TCE by S-ZVI and its mechanism. The results showed that NO3- did not affect the degradation pathway of TCE, but at high concentrations, it competed for electrons and led to an increase in the production of acetylene. Additionally, the presence of NO3- promoted the formation of Fe3O4, which improved the degradation efficiency of TCE.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Engineering, Chemical
Yong Sun, Xuecheng Sun, Meesam Ali, Ali Shan, Ayesha Idrees, Chaoxiang Yang, Shuguang Lyu
Summary: The role of bisulfite (HSO3-) in the nCaO(2)/Fe(III)/HSO3- system in promoting HO center dot generation and improving trichloroethene (TCE) removal was reported. The complexing and reducing effects of HSO3- on Fe(III) conversion to Fe(II), as well as the generation of SO4-center dot, were identified as the main mechanisms for enhancing TCE removal. Various reactive oxygen species (ROSs) were found to contribute to TCE degradation, with HO center dot being the dominant species in the nCaO(2)/Fe(III)/HSO3- system.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Environmental Sciences
Haibo Xie, Jiale Peng, Xuesong Zhang, Lihua Deng, Yani Ding, Xulei Zuo, Feng Wang, Yonggui Wu, Jiaxiang Zhang, Qixing Zhu
Summary: This study investigated the mechanism of NLRP3 inflammasome activation in trichloroethylene-sensitized mice. The results showed that C5b-9 caused calcium influx, resulting in mitochondrial injury and overexpression of mtROS, which activated the assembly of NLRP3 inflammasome and ultimately led to kidney injury in TCE-sensitized positive mice.
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2022)
Article
Engineering, Chemical
Zhengyuan Zhou, Jingyao Huang, Zhiqiang Xu, Meesam Ali, Ali Shan, Rongbing Fu, Shuguang Lyu
Summary: This study investigated the synergistic effect of Fe(II)/CA, Fe(II)/nZVI, and Fe(II)/S-nZVI as activated catalysts for TCE removal, with HO center dot and SO4 center dot playing crucial roles in TCE degradation. Additionally, the presence of CA was found to maintain Fe(II) concentration for catalytic activity.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Engineering, Environmental
Jingyao Huang, Zhengyuan Zhou, Muhammad Danish, Qian Sui, Shuguang Lyu
Summary: This study investigated the effect of synergistic strengthening by citric acid (CA) coupled with micron zero valent iron (mZVI) in Fe(II) catalyzed sodium percarbonate (SPC) system on trichloroethylene (TCE) removal in an aqueous environment with the existence of sodium dodecyl sulfate (SDS). Compared with SPC/Fe(II), SPC/Fe (II)/mZVI, SPC/Fe(II)/CA, and SPC/Fe(II)/CA/mZVI systems, the synergistic strengthening effect by CA and mZVI could maximize TCE removal to 92.0 % and dechlorination of TCE to 88.0 % within 30 min. Furthermore, the synergistic system has the widest pH range of 3-7. The presence of CA and mZVI continuously releases Fe(II) and efficiently promotes the formation of hydroxyl radicals, as well as other reductive radicals such as superoxide radical and carbon dioxide radical. The system shows superiority in the remediation of actual contaminated groundwater.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Engineering, Environmental
Ayesha Idrees, Ali Shan, Meesam Ali, Zain Abbas, Tanvir Shahzad, Sabir Hussain, Faisal Mahmood, Usman Farooq, Muhammad Danish, Shuguang Lyu
Summary: Polyvinylpyrrolidone coated nano zero valent iron-copper (PVP-nZVI-Cu) bimetallic nanoparticles were successfully synthesized for dechlorination of trichloroethylene (TCE) into non-toxic byproducts in the presence of persulfate oxidant. The system showed significant potential in real groundwater for remediation of TCE contaminated groundwater.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Engineering, Environmental
Jia Deng, Xin-Ming Hu, Enlai Gao, Feng Wu, Weizhao Yin, Li-Zhi Huang, Dionysios D. Dionysiou
Summary: Electrochemical dechlorination using FeNC catalysts is an effective strategy for removing TCE in groundwater, with FeNC-1000 showing the highest electron transfer efficiency and electrochemical active surface area.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Environmental Sciences
Rumin Yang, Guilu Zeng, Zhiqiang Xu, Zhengyuan Zhou, Jingyao Huang, Rongbing Fu, Shuguang Lyu
Summary: The presence of polycyclic aromatic hydrocarbons (PAHs) in groundwater poses a significant threat to human health worldwide, with Fenton oxidation processes showing promising results in removing naphthalene (NaP). Among different oxidants, hydrogen peroxide (H2O2) proved to be the most effective in degrading NaP. Additionally, the inhibitory effects of weak alkaline pH and HCO3- in actual groundwater can be counteracted by increasing dosages of oxidants and Fe(II).
Article
Engineering, Environmental
Oladotun P. Bolade, Kayode O. Adeniyi, Akan B. Williams, Nsikak U. Benson
Summary: This study characterized Nigerian crude oil using GC-MS and investigated the efficiency of alkaline activated sodium persulphate in degrading petroleum hydrocarbons. The research found that the alkaline activated persulphate was effective in degrading petroleum hydrocarbons in crude oil-polluted water.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)