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Yeo KFH, Dong Y, Xue T, Chen Z, Zhang N, Yang Y, Han L, Liu M, Nsilani Kouediatouka A, Mouguegue HPPL, Wang W. Characterisation of kapok fibre's biochar for arsenate adsorption removal from aqueous solution. Environ Res 2023; 228:115822. [PMID: 37028542 DOI: 10.1016/j.envres.2023.115822] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/16/2022] [Revised: 03/17/2023] [Accepted: 03/30/2023] [Indexed: 05/16/2023]
Abstract
Al-KBC was produced through the simple pyrolysis of Al-modified kapok fibres at high temperatures. Using the N2 adsorption Brunauer Emmett Teller (BET) process, Fourier transforms infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), the energy-dispersive X-ray spectroscopy (EDS) spectroscopy, and X-ray photoelectron spectroscopy (XPS), the sorbent changes and characteristics were analysed. As a result of Al's addition to the fibre's surface, Al-KBC exhibited superior As(V) adsorption performance compared to KBC due to better pore structures. Experiments on the kinetics of As(V) adsorption revealed that the adsorption followed the pseudo-second-order model and that intradiffusion was not the only factor governing the adsorption. Experiments with isotherms indicated that the adsorption mechanism corresponded to the Langmuir model, and the adsorption capacity Qm of Al-KBC at 25 °C was 483 μg/g. The thermodynamic experiments suggested that the adsorption reactions were spontaneous endothermic with a random approach at the adsorption interface. 25 mg/L of coexisting ions such as sulphate and phosphate reduced the sorbent As(V) removal ability to 65% and 39%. After seven cycles of adsorption/desorption, Al-KBC demonstrated satisfactory performance in terms of reusability, adsorbing 53% of 100 μg/L As(V) from the water. This novel BC can probably be used as a filter to purify groundwater with high As(V) concentration in the rural zone.
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Affiliation(s)
- Kanfolo Franck Herve Yeo
- School of Human Settlements and Civil Engineering, Xi'an Jiaotong University, 28 Xianning West Road, Xi'an, Shaanxi, 710049, PR China
| | - Yingying Dong
- School of Human Settlements and Civil Engineering, Xi'an Jiaotong University, 28 Xianning West Road, Xi'an, Shaanxi, 710049, PR China
| | - Tongxuan Xue
- School of Human Settlements and Civil Engineering, Xi'an Jiaotong University, 28 Xianning West Road, Xi'an, Shaanxi, 710049, PR China
| | - Zhiwen Chen
- School of Human Settlements and Civil Engineering, Xi'an Jiaotong University, 28 Xianning West Road, Xi'an, Shaanxi, 710049, PR China
| | - Nan Zhang
- School of Human Settlements and Civil Engineering, Xi'an Jiaotong University, 28 Xianning West Road, Xi'an, Shaanxi, 710049, PR China
| | - Ye Yang
- School of Human Settlements and Civil Engineering, Xi'an Jiaotong University, 28 Xianning West Road, Xi'an, Shaanxi, 710049, PR China
| | - Liu Han
- School of Human Settlements and Civil Engineering, Xi'an Jiaotong University, 28 Xianning West Road, Xi'an, Shaanxi, 710049, PR China
| | - Meiling Liu
- School of Human Settlements and Civil Engineering, Xi'an Jiaotong University, 28 Xianning West Road, Xi'an, Shaanxi, 710049, PR China
| | - Ange Nsilani Kouediatouka
- Key Laboratory of Education Ministry for Modern Design and Rotor Bearing Systems, Department of Mechanical Engineering, Xi'an Jiaotong University, 28 Xianning West Road, Xi'an, Shaanxi, 710049, PR China
| | | | - Wendong Wang
- School of Human Settlements and Civil Engineering, Xi'an Jiaotong University, 28 Xianning West Road, Xi'an, Shaanxi, 710049, PR China; Loess Plateau Eco-environment Restoration & Livable Villages Research Center, Xi'an, Shaanxi, 710000, PR China.
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Pu ZQ, Liu D, Lobo Mouguegue HPP, Jin CW, Sadiq E, Qin DD, Yu TF, Zong C, Chen JC, Zhao RX, Lin JY, Cheng J, Yu X, Li X, Zhang YC, Liu YT, Guan QB, Wang XD. NR4A1 counteracts JNK activation incurred by ER stress or ROS in pancreatic β-cells for protection. J Cell Mol Med 2020; 24:14171-14183. [PMID: 33124187 PMCID: PMC7754045 DOI: 10.1111/jcmm.16028] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2020] [Revised: 09/08/2020] [Accepted: 10/05/2020] [Indexed: 12/20/2022] Open
Abstract
Sustained hyperglycaemia and hyperlipidaemia incur endoplasmic reticulum stress (ER stress) and reactive oxygen species (ROS) overproduction in pancreatic β‐cells. ER stress or ROS causes c‐Jun N‐terminal kinase (JNK) activation, and the activated JNK triggers apoptosis in different cells. Nuclear receptor subfamily 4 group A member 1 (NR4A1) is an inducible multi‐stress response factor. The aim of this study was to explore the role of NR4A1 in counteracting JNK activation induced by ER stress or ROS and the related mechanism. qPCR, Western blotting, dual‐luciferase reporter and ChIP assays were applied to detect gene expression or regulation by NR4A1. Immunofluorescence was used to detect a specific protein expression in β‐cells. Our data showed that NR4A1 reduced the phosphorylated JNK (p‐JNK) in MIN6 cells encountering ER stress or ROS and reduced MKK4 protein in a proteasome‐dependent manner. We found that NR4A1 increased the expression of cbl‐b (an E3 ligase); knocking down cbl‐b expression increased MKK4 and p‐JNK levels under ER stress or ROS conditions. We elucidated that NR4A1 enhanced the transactivation of cbl‐b promoter by physical association. We further confirmed that cbl‐b expression in β‐cells was reduced in NR4A1‐knockout mice compared with WT mice. NR4A1 down‐regulates JNK activation by ER stress or ROS in β‐cells via enhancing cbl‐b expression.
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Affiliation(s)
- Ze-Qing Pu
- Department of Cell Biology, Shandong University School of Medicine, Jinan, China
| | - Dong Liu
- Department of Cell Biology, Shandong University School of Medicine, Jinan, China
| | | | - Cheng-Wen Jin
- Department of Cell Biology, Shandong University School of Medicine, Jinan, China
| | - Esha Sadiq
- Department of Cell Biology, Shandong University School of Medicine, Jinan, China
| | - Dan-Dan Qin
- Department of Cell Biology, Shandong University School of Medicine, Jinan, China
| | - Tian-Fu Yu
- Department of Cell Biology, Shandong University School of Medicine, Jinan, China
| | - Chen Zong
- Department of Cell Biology, Shandong University School of Medicine, Jinan, China
| | - Ji-Cui Chen
- Blood Transfusion Department, Qilu Hospital of Shandong University, Jinan, China
| | - Ru-Xing Zhao
- Department of Endocrinology, Qilu Hospital of Shandong University, Jinan, China
| | - Jing-Yu Lin
- Department of Physiology, Shandong University School of Medicine, Jinan, China
| | - Jie Cheng
- Department of Physiology, Shandong University School of Medicine, Jinan, China
| | - Xiao Yu
- Department of Physiology, Shandong University School of Medicine, Jinan, China.,Key Laboratory of Protein Sciences for Chronic Degenerative Diseases in Universities of Shandong (Shandong University), Jinan, China
| | - Xia Li
- Department of Cell Biology, Shandong University School of Medicine, Jinan, China
| | - Yu-Chao Zhang
- Department of Endocrinology, Qingdao Municipal Hospital, Qingdao, China
| | - Yuan-Tao Liu
- Department of Endocrinology, Qingdao Municipal Hospital, Qingdao, China
| | - Qing-Bo Guan
- Department of Endocrinology, Shandong Provincial Hospital, Affiliated to Shandong University, Jinan, China
| | - Xiang-Dong Wang
- Department of Cell Biology, Shandong University School of Medicine, Jinan, China.,Key Laboratory of Protein Sciences for Chronic Degenerative Diseases in Universities of Shandong (Shandong University), Jinan, China
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