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Wang R, Liu Y, Lu Y, Liang S, Zhang Y, Zhang J, Shi R, Yin W. Fabrication of a corn stalk derived cellulose-based bio-adsorbent to remove Congo red from wastewater: Investigation on its ultra-high adsorption performance and mechanism. Int J Biol Macromol 2023; 241:124545. [PMID: 37085075 DOI: 10.1016/j.ijbiomac.2023.124545] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Revised: 04/04/2023] [Accepted: 04/17/2023] [Indexed: 04/23/2023]
Abstract
A cellulose-based bio-absorbent with various and plenty of amino groups was successfully prepared from corn stalk to achieve quantitative removal of Congo red from wastewater with wide pH values (5 ≤ pH ≤ 10). The maximum removal amount was 8.0 mmol·g-1 (5572 mg·g-1) under pH = 6.0 and 45 °C, which was obviously higher than reported absorbents. Investigation on dynamic adsorption and recyclability in authentic wastewater found that the removal efficiency of Congo red was >98 % within 180 min and decreased slightly in industrial water after five cycles, denoting this adsorbent with great potential for environmental application. The characterization results proved that 7.58 mmol·g-1 of different amino groups (-NH2, -NH- and -NR2) were introduced on adsorbent surface by two steps of modification and were the major functional groups for adsorption of Congo red. The inferred adsorption mechanism revealed that Congo red could be adsorbed equivalently on the amino groups by strong electrostatic interactions or hydrogen bonds. Different amino groups played different roles in adsorption due to great differences in protonation ability in 5 ≤ pH ≤ 10. The study was expected to high-efficiently remove Congo red from acidic or alkaline wastewater, and offered an alternative strategy for biowaste treatment of corn stalks in a high value-added manner.
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Affiliation(s)
- Rong Wang
- School of Chemistry and Chemical Engineering, Environmental Testing Center, Key Laboratory of Poyang Lake Environment and Resource Utilization, Ministry of Education, Nanchang University, Nanchang 330031, PR China
| | - Yi Liu
- School of Chemistry and Chemical Engineering, Environmental Testing Center, Key Laboratory of Poyang Lake Environment and Resource Utilization, Ministry of Education, Nanchang University, Nanchang 330031, PR China
| | - Yanhui Lu
- School of Chemistry and Chemical Engineering, Environmental Testing Center, Key Laboratory of Poyang Lake Environment and Resource Utilization, Ministry of Education, Nanchang University, Nanchang 330031, PR China
| | - Shuhuai Liang
- School of Chemistry and Chemical Engineering, Environmental Testing Center, Key Laboratory of Poyang Lake Environment and Resource Utilization, Ministry of Education, Nanchang University, Nanchang 330031, PR China
| | - Yafang Zhang
- School of Chemistry and Chemical Engineering, Environmental Testing Center, Key Laboratory of Poyang Lake Environment and Resource Utilization, Ministry of Education, Nanchang University, Nanchang 330031, PR China
| | - Jian Zhang
- School of Chemistry and Chemical Engineering, Environmental Testing Center, Key Laboratory of Poyang Lake Environment and Resource Utilization, Ministry of Education, Nanchang University, Nanchang 330031, PR China
| | - Ronghui Shi
- Fuzhou Green Chemical and Cleaner Production Industry Technology Innovation Center, Chemical Safety Institute of Fujian University of Technology, Fuzhou 350118, PR China
| | - Wang Yin
- Fuzhou University International (Hong Kong/Macao/Taiwan) Joint Laboratory of Thermochemical Conversion of Biomass, Fujian Universities Engineering Research Center of Reactive Distillation Technology, College of Chemical Engineering, Fuzhou University, Fuzhou 350108, Fujian, PR China.
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Fan K, Su J, Zeng Z, Hu J, Yang H, Hou Z. Anti-fouling and protein separation of PVDF-g-PMAA@MnO 2 filtration membrane with in-situ grown MnO 2 nanorods. CHEMOSPHERE 2022; 286:131756. [PMID: 34365174 DOI: 10.1016/j.chemosphere.2021.131756] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2021] [Revised: 07/26/2021] [Accepted: 07/30/2021] [Indexed: 06/13/2023]
Abstract
MnO2 nanorods with controllable scale were grown in the PVDF-g-PMAA modified membrane to form PVDF-g-PMAA@ MnO2 membrane through the in situ redox reaction of KMnO4 solution, which is confirmed by scanning electron microscopy (SEM) and X-ray energy-dispersion spectroscopy (EDX). The pore size of the membrane decreased with the increase of KMnO4 solution concentration. The thermodynamic stability and the hydrophilicity of the membrane were also enhanced by the MnO2 nanorods. The water flux, bovine serum albumin (BSA)/Lysozyme protein solution flux and rejection, flux recovery, etc. showed effective improvement of the anti-fouling performance of the PVDF-g-PMAA@ MnO2 membrane. More importantly, it can effectively separate BSA from lysozyme, which provided a potential application in the field of biology, food, and other industrial fields for the requirement of separation and purification.
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Affiliation(s)
- Kai Fan
- School of Architecture and Materials, Chongqing College of Electronic Engineering, Chongqing, 401331, China; Key Laboratory of Interfacial Physics and Technology, Chinese Academy of Sciences, Shanghai, 201800, China
| | - Jiang Su
- School of Architecture and Materials, Chongqing College of Electronic Engineering, Chongqing, 401331, China
| | - Zihang Zeng
- School of Architecture and Materials, Chongqing College of Electronic Engineering, Chongqing, 401331, China
| | - Jun Hu
- Key Laboratory of Interfacial Physics and Technology, Chinese Academy of Sciences, Shanghai, 201800, China; Shanghai Synchrotron Radiation Facility, Zhangjiang Laboratory (SSRF, ZJLab), Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai, 201204, China
| | - Haijun Yang
- Key Laboratory of Interfacial Physics and Technology, Chinese Academy of Sciences, Shanghai, 201800, China; Shanghai Synchrotron Radiation Facility, Zhangjiang Laboratory (SSRF, ZJLab), Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai, 201204, China.
| | - Zhengchi Hou
- Key Laboratory of Interfacial Physics and Technology, Chinese Academy of Sciences, Shanghai, 201800, China; Shanghai Synchrotron Radiation Facility, Zhangjiang Laboratory (SSRF, ZJLab), Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai, 201204, China.
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Wei T, Qu Y, Zou Y, Zhang Y, Yu Q. Exploration of smart antibacterial coatings for practical applications. Curr Opin Chem Eng 2021. [DOI: 10.1016/j.coche.2021.100727] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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Cationic peptide-based salt-responsive antibacterial hydrogel dressings for wound healing. Int J Biol Macromol 2021; 190:754-762. [PMID: 34517027 DOI: 10.1016/j.ijbiomac.2021.09.019] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2021] [Revised: 08/19/2021] [Accepted: 09/03/2021] [Indexed: 12/19/2022]
Abstract
Development of biological dressings has received widespread attentions due to their good breathability, biocompatibility, wettability, and the ability to absorb wound exudate without sticking to the wound. However, current proposed antibacterial hydrogels are limited antibacterial ability, short service life and insufficient biocompatibility, which are still challenging to address intricate practical applications. Here we develop a cationic peptide-based, salt-responsive hydrogel dressing with triple functions of antifouling, bactericidal, and bacterial release by combining ε-poly-l-lysine, poly(ethylene glycol) diglycidyl ether, and poly(DVBAPS-co-GMA) via a one-pot method. These designed hydrogels enabled to further quaternize to enhance antibacterial property due to the presence of amine residues. The resultant hydrogels present good antibacterial activity (>90%), biocompatibility, cell proliferation efficacy (~400%) and adhesiveness. Through in vivo and in vitro antibacterial capability tests, it is also found that hydrogels have good antifouling and sterilization capabilities, and the sterilization rate could reach up to ~96%. In addition, ~94% of the attached bacterial can be released after saline/water switching for several cycles. Taken together, the designed multiple antibacterial dressing prolongs the lifespan relying on reversible salt-responsive release and meet special requirements for wound healing. This work not only provides a platform to highlight its promising potentials in wound management but also gives a custom strategy to biomedical applications.
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