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Lignin microparticles-reinforced cellulose filter paper for simultaneous removal of emulsified oils and dyes. Int J Biol Macromol 2023; 230:123120. [PMID: 36603724 DOI: 10.1016/j.ijbiomac.2022.123120] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Revised: 12/14/2022] [Accepted: 12/29/2022] [Indexed: 01/03/2023]
Abstract
The presence of multiple pollutants in wastewater, often with complex interactions, poses a significant challenge for conventional membranes to effectively remove multiple pollutants simultaneously. Herein, a lignin microparticles-reinforced cellulose filter paper (FP@AL-LS-DA) was fabricated via an aldol condensation between lignin and cellulose filter paper and cross-linking with dopamine hydrochloride (DA), which showed desired rejection of oil-in-water emulsions and dyes. Characterizations revealed that the addition of lignin and DA effectively narrowed the pore size (from 4.45 μm to 2.01 μm) and enhanced the rigidity and stability of the cellulose filter paper, thus making it not easily damaged in the water environment and showing excellent tolerance to strong acid and high-salt environments. The oil-in-water emulsions removal efficiency was higher than 99 % even after ten times usage, and the oil flux was kept stable at 52.54 L·m-2·h-1, indicating that FP@AL-LS-DA had outstanding reusability and stability. Remarkably, FP@AL-LS-DA showed excellent removal efficiency (>99 %) for complex pollutants containing dyes and oil-in-water emulsions. In this work, we demonstrate a lignin microparticles-reinforced cellulose filter paper that is simple to prepare and can efficiently separate oil-in-water emulsions and remove dyes.
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Fabrication of the Ordered Mesoporous nZVI/Zr-Ce-SBA-15 Composites Used for Crystal Violet Removal and Their Optimization Using RSM and ANN–PSO. SUSTAINABILITY 2022. [DOI: 10.3390/su14116566] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Crystal violet (CV), a triphenylmethane dye, is widely used in the textile, printing, paper, leather, and cosmetics industries. However, due to its higher chemical stability and lower biodegradability, CV has teratogenic and carcinogenic toxic effects on animals and humans. Therefore, the objective of the present study was to investigate whether or not the as-prepared nZVI supported on an ordered mesoporous Zr-Ce-SBA-15 composite (nZVI/Zr-Ce-SBA-15) had more potential for CV removal from simulated wastewater in comparison with Zr-Ce-SBA-15. Meanwhile, the parameters of CV adsorption onto nZVI/Zr-Ce-SBA-15 composites were optimized by a response surface methodology (RSM) and an artificial neural network combined with particle swarm optimization (ANN–PSO). According to XRD, FTIR, SEM, and TEM, N2 adsorption, and thermogravimetric analyses, nZVI was supported successfully on Zr-Ce-SBA-15 composites, becoming an ordered mesoporous material. The results of RSM indicated that the order of the effects of the four parameters on CV removal was, successively, initial pH, contact time, temperature, and initial CV concentration. ANN–PSO was more suitable, in comparison to RSM, to optimize the experimental parameters for CV removal from simulated wastewater using ordered mesoporous nZVI/Zr-Ce-SBA-15 composites. The optimized removal rate of CV was 93.87% under an initial pH of 3.00, a contact time of 20.00 min, an initial CV concentration of 261.00 mg/L, and a temperature of 45. Pseudo-second-order kinetics can better describe the behavior of CV adsorption onto nZVI/Zr-Ce-SBA-15 composites. The process of CV adsorption onto Zr-Ce-SBA-15 composites was followed by the Langmuir model, and its maximum adsorption capacity was 105 mg/g in 213 K. It was indirectly confirmed that the maximum adsorption capacity of nZVI/Zr-Ce-SBA-15 exceeded this value because the removal efficiency of CV using nZVI/Zr-Ce-SBA-15 was obviously higher than that of using Zr-Ce-SBA-15. The thermodynamics results indicated that CV adsorption onto nZVI/Zr-Ce-SBA-15 was a spontaneous, endothermic, and entropy-driven process. The dissolution of Fe ions and light/dark experiments confirmed nZVI/Zr-Ce-SBA-15 was simultaneously of adsorption and catalysis in the process of CV removal. The effect of removal CV was still maintained in the first four experiments (removal rate > 78%), and our suggestion is that nZVI/Zr-Ce-SBA-15 is a potential adsorbent for CV remediation from wastewater compared to Zr-Ce-SBA-15 and other adsorbents.
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Mai VC, Hou S, Pillai PR, Lim TT, Duan H. Universal and Switchable Omni-Repellency of Liquid-Infused Surfaces for On-Demand Separation of Multiphase Liquid Mixtures. ACS NANO 2021; 15:6977-6986. [PMID: 33754693 DOI: 10.1021/acsnano.0c10871] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Mixtures of immiscible liquids are commonly found in the scenarios of environmental protection and many industrial applications. Compared to widely explored water-oil mixtures, small differences in the surface energy of organic liquids, especially for those in multiphase mixtures, make their separation a formidable challenge. Here, a family of versatile coatings based on the reactions between plant polyphenols and 3-aminopropyl triethoxysilane is introduced to regulate the wetting behavior of substrates by forming stable liquid-infused interfaces. The key finding is that when a coated substrate is prewetted with a liquid forming a stable liquid-infused interface, it becomes repellent to any other immiscible liquids. This phenomenon is independent of the surface energy of the initial wetting liquid. This exclusive wetting behavior can lead to distinctive repellency toward almost any liquid by the infusion of an immiscible liquid, even if the difference of surface energy and dielectric constant of a liquid pair is as small as 2.0 mJ m-2 and 1.8, respectively, resulting in universal and switchable omni-repellency. Of particular importance is that the as-prepared coating makes possible the on-demand separation of multiphase liquid mixtures by both continuous membrane filtration and static absorption, presenting a green and cost-effective approach to addressing this major environmental and industrial challenge.
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Affiliation(s)
- Van Cuong Mai
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 70 Nanyang Drive, Singapore 637457, Singapore
| | - Shuai Hou
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 70 Nanyang Drive, Singapore 637457, Singapore
| | - Praveen Raghuram Pillai
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 70 Nanyang Drive, Singapore 637457, Singapore
| | - Teik-Thye Lim
- School of Civil and Environmental Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore
| | - Hongwei Duan
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 70 Nanyang Drive, Singapore 637457, Singapore
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Yang L, Zhan Y, Yu R, Lan J, Shang J, Dou B, Liu H, Zou R, Lin S. Facile and Scalable Fabrication of Antibacterial CO 2-Responsive Cotton for Ultrafast and Controllable Removal of Anionic Dyes. ACS APPLIED MATERIALS & INTERFACES 2021; 13:2694-2709. [PMID: 33400496 DOI: 10.1021/acsami.0c19750] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
A novel CO2-responsive cotton as an eco-friendly adsorbent derived from poly(4-acryloyloxybenzophenone-co-2-(dimethylamino) ethyl methacrylate) and cotton was fabricated via a facile and fast dip-coating method. As expected, upon CO2 stimulation, the protonated cotton presented CO2-induced "on-off" selective adsorption behaviors toward anionic dyes owing to electrostatic interactions. The adsorption isotherms and kinetics of the CO2-responsive cotton toward anionic dyes obeyed the Langmuir isotherm and pseudo-second-order kinetics models, respectively. It is noteworthy that the CO2-responsive cotton exhibited high adsorption capacity and ultrafast adsorption rate toward anionic dyes with the maximum adsorption capacities of 1785.71 mg g-1 for methyl orange (MO), 1108.65 mg g-1 for methyl blue (MB), and 1315.79 mg g-1 for naphthol green B (NGB), following the adsorption equilibrium times of 5 min for MO, 3 min for MB, and 4 min for NGB. Moreover, the CO2-responsive cotton also exhibited high removal efficiency toward anionic dyes in synthetic dye effluent. Additionally, the CO2-responsive cotton could be facilely regenerated via heat treatment under mild conditions and presented stable adsorption properties even after 15 cycles. Finally, the as-prepared CO2-responsive cotton exhibited outstanding antibacterial activity against E. coli and S. aureus. In summary, this novel CO2-responsive cotton can be viewed as a promising eco-friendly adsorbent material for potential scalable application in dye-contaminated wastewater remediation.
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Affiliation(s)
- Lin Yang
- College of Biomass Science and Engineering, Sichuan University, Chengdu 610065, P.R. China
| | - Yifei Zhan
- College of Biomass Science and Engineering, Sichuan University, Chengdu 610065, P.R. China
| | - Ruiquan Yu
- College of Biomass Science and Engineering, Sichuan University, Chengdu 610065, P.R. China
- National Engineering Laboratory for Clean Technology of Leather Manufacture, Sichuan University, Chengdu 610065, P.R. China
| | - Jianwu Lan
- College of Biomass Science and Engineering, Sichuan University, Chengdu 610065, P.R. China
| | - Jiaojiao Shang
- College of Biomass Science and Engineering, Sichuan University, Chengdu 610065, P.R. China
- National Engineering Laboratory for Clean Technology of Leather Manufacture, Sichuan University, Chengdu 610065, P.R. China
| | - Baojie Dou
- College of Biomass Science and Engineering, Sichuan University, Chengdu 610065, P.R. China
| | - Hongyu Liu
- College of Biomass Science and Engineering, Sichuan University, Chengdu 610065, P.R. China
| | - Rui Zou
- College of Biomass Science and Engineering, Sichuan University, Chengdu 610065, P.R. China
| | - Shaojian Lin
- College of Biomass Science and Engineering, Sichuan University, Chengdu 610065, P.R. China
- National Engineering Laboratory for Clean Technology of Leather Manufacture, Sichuan University, Chengdu 610065, P.R. China
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Zhou J, Zhang Y, Jia G, Chen Z, Yang Y, Zhang L. A multifunctional sponge incorporated with TiO 2 and graphene oxide as a reusable absorbent for oil/water separation and dye absorption. NEW J CHEM 2021. [DOI: 10.1039/d0nj06298g] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Reusable TiO2–GO–SA sponges can be used for the oil/water separation and absorption of oils and dyes.
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Affiliation(s)
- Jian Zhou
- School of Material Engineering
- Shanghai University of Engineering Science
- Shanghai 201620
- P. R. China
| | - Yan Zhang
- School of Material Engineering
- Shanghai University of Engineering Science
- Shanghai 201620
- P. R. China
| | - Guangwen Jia
- School of Material Engineering
- Shanghai University of Engineering Science
- Shanghai 201620
- P. R. China
| | - Zhenfei Chen
- School of Material Engineering
- Shanghai University of Engineering Science
- Shanghai 201620
- P. R. China
| | - Yongqiang Yang
- National Graphene Products Quality Supervision and Inspection Center (Jiangsu)
- Jiangsu Province Special Equipment Safety Supervision Inspection Institute Branch of Wuxi
- Wuxi 214174
- P. R. China
| | - Lu Zhang
- School of Material Engineering
- Shanghai University of Engineering Science
- Shanghai 201620
- P. R. China
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Nandyala D, Wang Z, Hwang D, Cubaud T, Colosqui CE. Design, Fabrication, and Analysis of a Capillary Diode for Potential Application in Water-Oil Separation. ACS APPLIED MATERIALS & INTERFACES 2020; 12:45950-45960. [PMID: 32955850 DOI: 10.1021/acsami.0c10744] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
A capillary device is designed and fabricated in glass to work as a fluidic diode with vanishingly small hydrodynamic conductance for imbibition of water within a finite range of immersion depths. This is attained through patterning a section of predefined length on the device surfaces using a single-step laser-based ablation process and without resorting to chemical treatment of the hydrophilic glass substrate. While the studied device works as a fluidic diode for water, it can behave as a conventional capillary slit for the imbibition of oils (e.g., alkanes, silicone oils) with low surface tension. A prototype device with simple geometric design is demonstrated for selective adsorption and separation of water and oil in vertical imbibition experiments at controlled immersion depths. Efficient devices for passive separation of water and oil can be designed based on the demonstrated physical mechanism and the analytical model proposed in this work.
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Affiliation(s)
- Dhiraj Nandyala
- Department of Mechanical Engineering, Stony Brook University, New York, New York 11794, United States
| | - Zhen Wang
- Department of Mechanical Engineering, Stony Brook University, New York, New York 11794, United States
| | - David Hwang
- Department of Mechanical Engineering, Stony Brook University, New York, New York 11794, United States
| | - Thomas Cubaud
- Department of Mechanical Engineering, Stony Brook University, New York, New York 11794, United States
| | - Carlos E Colosqui
- Department of Mechanical Engineering, Stony Brook University, New York, New York 11794, United States
- Department of Applied Mathematics and Statistics, Stony Brook University, New York, New York 11794, United States
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Wang Y, Yue G, Li D, Hou L, Zhao X, Cui Z, Bai J, Wang N, Zhao Y. A Robust Carbon Nanotube and PVDF‐HFP Nanofiber Composite Superwettability Membrane for High‐Efficiency Emulsion Separation. Macromol Rapid Commun 2020; 41:e2000089. [DOI: 10.1002/marc.202000089] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Revised: 03/25/2020] [Accepted: 03/26/2020] [Indexed: 11/10/2022]
Affiliation(s)
- Yaqiong Wang
- Key Laboratory of Bio‐Inspired Smart Interfacial Science and Technology of Ministry of Education, Beijing Advanced Innovation Center for Biomedical EngineeringSchool of Chemistry, Beihang University Beijing 100191 P. R. China
| | - Guichu Yue
- Key Laboratory of Bio‐Inspired Smart Interfacial Science and Technology of Ministry of Education, Beijing Advanced Innovation Center for Biomedical EngineeringSchool of Chemistry, Beihang University Beijing 100191 P. R. China
| | - Dianming Li
- Key Laboratory of Bio‐Inspired Smart Interfacial Science and Technology of Ministry of Education, Beijing Advanced Innovation Center for Biomedical EngineeringSchool of Chemistry, Beihang University Beijing 100191 P. R. China
| | - Lanlan Hou
- Key Laboratory of Bio‐Inspired Smart Interfacial Science and Technology of Ministry of Education, Beijing Advanced Innovation Center for Biomedical EngineeringSchool of Chemistry, Beihang University Beijing 100191 P. R. China
| | - Xiaochen Zhao
- Key Laboratory of Bio‐Inspired Smart Interfacial Science and Technology of Ministry of Education, Beijing Advanced Innovation Center for Biomedical EngineeringSchool of Chemistry, Beihang University Beijing 100191 P. R. China
| | - Zhimin Cui
- Key Laboratory of Bio‐Inspired Smart Interfacial Science and Technology of Ministry of Education, Beijing Advanced Innovation Center for Biomedical EngineeringSchool of Chemistry, Beihang University Beijing 100191 P. R. China
| | - Jie Bai
- Chemical Engineering CollegeInner Mongolia University of TechnologyInner Mongolia Key Laboratory of Industrial Catalysis Hohhot 010051 P. R. China
| | - Nü Wang
- Key Laboratory of Bio‐Inspired Smart Interfacial Science and Technology of Ministry of Education, Beijing Advanced Innovation Center for Biomedical EngineeringSchool of Chemistry, Beihang University Beijing 100191 P. R. China
| | - Yong Zhao
- Key Laboratory of Bio‐Inspired Smart Interfacial Science and Technology of Ministry of Education, Beijing Advanced Innovation Center for Biomedical EngineeringSchool of Chemistry, Beihang University Beijing 100191 P. R. China
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