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Li Z, Zhao L, Ao Q, Zhang G, Kang D, Li Y, Liu J, Ding G, Ma Z, Teow YH, Sajab MS, Li Z, Wang Z. Exploring the cationic surfactant adsorption efficiency at concentrations relative to the critical micelle concentration by SA/SiO 2 microspheres. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 367:122069. [PMID: 39098071 DOI: 10.1016/j.jenvman.2024.122069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/23/2024] [Revised: 07/24/2024] [Accepted: 07/30/2024] [Indexed: 08/06/2024]
Abstract
Studying the adsorption behavior of cationic surfactants can help to develop more effective strategies to limit their dispersion in the environment. However, there have few studies on the adsorption of cationic surfactants from the perspective of critical micelle concentration (CMC). In this study, with cetyltrimethylammonium bromide (CTAB) and octadecyl trimethylammonium bromide (OTAB) serving as the model cationic surfactants, the effect of CMC on the adsorption behavior of cationic surfactant onto the surface of sodium alginate/silica (SA/SiO2) microspheres was systematically revealed. The adsorption mechanism relative to CMC was investigated under different conditions, including surfactant concentration, pH, temperature, and adsorption time. The results suggest that at identical concentrations, the smaller the CMC value of the cationic surfactants, the greater the adsorption amount (qt). qt for CTAB and OTAB were 583.2 and 678.0 mg/g respectively, with the concentration higher than their CMC value. When the concentration was lower than the CMC value of the cationic surfactants, qt for CTAB and OTAB were 123.2 and 138.7 mg/g, respectively. The CMC value of CTAB was lower than that of OTAB under identical conditions, suggesting that the adsorption of cationic surfactants is related to their CMC. These results are beneficial for the removal of cationic surfactants by adsorption methods.
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Affiliation(s)
- Zhiying Li
- Key Laboratory of Biotechnology and Bioengineering of State Ethnic Affairs Commission, Biomedical Research Center, Engineering Research Center of Key Technology and Industrialization of Cell-based Vaccine, Ministry of Education, Gan-su Tech Innovation Center of Animal, China-Malaysia National Joint Laboratory, Northwest Minzu University, Lanzhou, Gansu, 730030, China; School of Chemical Engineering, Northwest Minzu University, Lanzhou, Gansu, 730124, China
| | - Lei Zhao
- Key Laboratory of Biotechnology and Bioengineering of State Ethnic Affairs Commission, Biomedical Research Center, Engineering Research Center of Key Technology and Industrialization of Cell-based Vaccine, Ministry of Education, Gan-su Tech Innovation Center of Animal, China-Malaysia National Joint Laboratory, Northwest Minzu University, Lanzhou, Gansu, 730030, China
| | - Qing Ao
- Key Laboratory of Biotechnology and Bioengineering of State Ethnic Affairs Commission, Biomedical Research Center, Engineering Research Center of Key Technology and Industrialization of Cell-based Vaccine, Ministry of Education, Gan-su Tech Innovation Center of Animal, China-Malaysia National Joint Laboratory, Northwest Minzu University, Lanzhou, Gansu, 730030, China
| | - Ge Zhang
- Key Laboratory of Biotechnology and Bioengineering of State Ethnic Affairs Commission, Biomedical Research Center, Engineering Research Center of Key Technology and Industrialization of Cell-based Vaccine, Ministry of Education, Gan-su Tech Innovation Center of Animal, China-Malaysia National Joint Laboratory, Northwest Minzu University, Lanzhou, Gansu, 730030, China
| | - Dongqing Kang
- School of Chemical Engineering, Northwest Minzu University, Lanzhou, Gansu, 730124, China
| | - Yingli Li
- School of Chemical Engineering, Northwest Minzu University, Lanzhou, Gansu, 730124, China
| | - Jian Liu
- Institute of Advanced Materials, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang, 330022, China
| | - Gongtao Ding
- Key Laboratory of Biotechnology and Bioengineering of State Ethnic Affairs Commission, Biomedical Research Center, Engineering Research Center of Key Technology and Industrialization of Cell-based Vaccine, Ministry of Education, Gan-su Tech Innovation Center of Animal, China-Malaysia National Joint Laboratory, Northwest Minzu University, Lanzhou, Gansu, 730030, China
| | - Zhongren Ma
- Key Laboratory of Biotechnology and Bioengineering of State Ethnic Affairs Commission, Biomedical Research Center, Engineering Research Center of Key Technology and Industrialization of Cell-based Vaccine, Ministry of Education, Gan-su Tech Innovation Center of Animal, China-Malaysia National Joint Laboratory, Northwest Minzu University, Lanzhou, Gansu, 730030, China
| | - Yeit Haan Teow
- Faculty of Engineering and Built Environment, The National University of Malaysia, Bangi, 43600, Selangor Darul Ehsan, Malaysia
| | - Mohd Shaiful Sajab
- Faculty of Engineering and Built Environment, The National University of Malaysia, Bangi, 43600, Selangor Darul Ehsan, Malaysia
| | - Zhiqiang Li
- Department of Medical, Northwest Minzu University, Lanzhou, Gansu, 730030, China.
| | - Zifan Wang
- Key Laboratory of Biotechnology and Bioengineering of State Ethnic Affairs Commission, Biomedical Research Center, Engineering Research Center of Key Technology and Industrialization of Cell-based Vaccine, Ministry of Education, Gan-su Tech Innovation Center of Animal, China-Malaysia National Joint Laboratory, Northwest Minzu University, Lanzhou, Gansu, 730030, China.
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Golder AK, Chauhan S, Ravi R. Synthesis of low-cost bentonite/Duranta erecta's fruit powder imbedded alginate beads and its application in surfactant removal. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:58945-58957. [PMID: 33987721 DOI: 10.1007/s11356-021-14306-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Accepted: 05/03/2021] [Indexed: 06/12/2023]
Abstract
High industrialization and improved medical facilities are deteriorating aquatic bodies through untreated effluents. This study is aimed to design and characterize the bentonite, Duranta erecta, and their hybrid-alginate beads for the removal of cetyltrimethylammonium bromide (CTAB) from its aqueous solution. D. erecta's seed powder was treated by using a sonochemical method and embedded into alginate beads. All designed beads were characterized by using physicochemical methods, Fourier-transform infrared (FTIR) spectroscopy, and X-ray diffraction (XRD) technique. Hybrid beads were found to form an appropriate hydrogel structure with maximum surface area per unit gram (544 cm2 g-1), 0.42 mg dry weight, and 2.70 mm diameter. Kinetics and intraparticle diffusion models were fitted where involvement of both chemisorption and intraparticle diffusion was observed during the initial 30 and post-30-min phase, respectively. Thermodynamic studies corroborated the spontaneity of the CTAB adsorption process. Bentonite alginate beads showed the highest adsorption capacity of 97.06 mg g-1 in 100 mg L-1 CTAB solution at optimized conditions, while hybrid-alginate beads showed excellent efficiency with a wide range of physicochemical conditions frame. Conclusively, designed beads can be used to remove the surfactant, i.e., CTAB, from industrial waste effluents for the betterment of water reservoirs.
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Affiliation(s)
- Animes Kumar Golder
- Department of Chemical Engineering, Indian Institute of Technology Guwahati, Assam, 781039, India.
| | - Soma Chauhan
- University Institute of Engineering and Technology, Kurukshetra University, Kurukshetra, Haryana, 136119, India
| | - Ravi Ravi
- Department of Chemical Engineering, Indian Institute of Technology Guwahati, Assam, 781039, India
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Miao Y, Peng W, Cao Y, Chang L, Fan G, Yu F. Facile preparation of sulfhydryl modified montmorillonite nanosheets hydrogel and its enhancement for Pb(II) adsorption. CHEMOSPHERE 2021; 280:130727. [PMID: 33964761 DOI: 10.1016/j.chemosphere.2021.130727] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2020] [Revised: 02/25/2021] [Accepted: 04/26/2021] [Indexed: 06/12/2023]
Abstract
In the work, sulfhydryl functionalized montmorillonite nanosheets based hydrogel balls were firstly synthesized for Pb(II) adsorption, and then characterized by scanning electron microscope (SEM), fourier transform infrared spectroscopy (FTIR), surface area analyzer (BET), thermogravimetry (TG), and zeta potential. Effects of initial solution pH, adsorbent dosage, contact time, temperature on Pb(II) adsorption of the resulting hydrogel balls were investigated systematically. The experimental results showed that the increase amount of sulfhydryl functionalized montmorillonite nanosheets (MMTNs-SH) maintained the hydrogel balls a better porous structure and bigger specific surface area, endowing it a bigger adsorption capacity. The adsorption process was fitted well with pseudo-second-order kinetics model and Freundlich model, and more than 97% of Pb(II) could be removed under the optimum conditions. Moreover, hydrogel spheres have a certain cycle performance. In addition, the interactions between Pb(Ⅱ) ions and the oxygen atoms in the hydroxyl groups and the sulfur atoms in the sulfhydryl groups, and the ion exchange in MMTNs-SH dominated the adsorption.
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Affiliation(s)
- Yiheng Miao
- Henan Province Industrial Technology Research Institute of Resources and Materials, Zhengzhou University, Zhengzhou, Henan, 450001, PR China
| | - Weijun Peng
- Henan Province Industrial Technology Research Institute of Resources and Materials, Zhengzhou University, Zhengzhou, Henan, 450001, PR China; School of Chemical Engineering, Zhengzhou University, Zhengzhou, Henan, 450001, PR China; National and Local Joint Engineering Research Center for Green Mineral Metallurgy and Processing, Zhengzhou, Henan, 450001, PR China; Provincial and Ministerial Joint Innovation Center for Resource Materials, Zhengzhou, Henan, 450001, PR China.
| | - Yijun Cao
- Henan Province Industrial Technology Research Institute of Resources and Materials, Zhengzhou University, Zhengzhou, Henan, 450001, PR China; School of Chemical Engineering, Zhengzhou University, Zhengzhou, Henan, 450001, PR China; National and Local Joint Engineering Research Center for Green Mineral Metallurgy and Processing, Zhengzhou, Henan, 450001, PR China; Provincial and Ministerial Joint Innovation Center for Resource Materials, Zhengzhou, Henan, 450001, PR China.
| | - Luping Chang
- Henan Province Industrial Technology Research Institute of Resources and Materials, Zhengzhou University, Zhengzhou, Henan, 450001, PR China
| | - Guixia Fan
- Henan Province Industrial Technology Research Institute of Resources and Materials, Zhengzhou University, Zhengzhou, Henan, 450001, PR China
| | - Futao Yu
- Evaluation and Utilization of Strategic Rare Metals and Rare Earth Resource Key Laboratory of Sichuan Province, Chengdu Analytical & Testing Center, Sichuan Bureau of Geology & Mineral Resources, Chengdu, 610081, PR China
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Chang L, Cao Y, Peng W, Li C, Fan G, Song X, Jia C. Insight into the effect of oxidation degree of graphene oxides on their removal from wastewater via froth flotation. CHEMOSPHERE 2021; 262:127837. [PMID: 32768755 DOI: 10.1016/j.chemosphere.2020.127837] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2020] [Revised: 07/08/2020] [Accepted: 07/24/2020] [Indexed: 06/11/2023]
Abstract
The effect of oxidation degree of graphene oxides (GO) on their removal from wastewater via froth flotation was studied in this work. Four types of GO samples with different oxidation degrees were synthesized and characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), transmission electron microscopy (TEM), atomic force spectroscopy (AFM) et al. The effects of cetyl trimethyl ammonium bromide (CTAB) concentration, pH, stirring time on the removal of GO by froth flotation had been discussed. It was found that the addition of CTAB could improve surface hydrophobicity of GO, endowing GO to be easily separated by froth flotation. The removal was dependent on CTAB dosage, pH and stirring time. Moreover, the removal first increased and then decreased with the increasing oxidation degree of GO, and less kinetic energy input was needed to overcome the energy barrier between GO flocs with the increase of oxidation degree. The removal mechanism was proven to be electrostatic attraction, and the different contents of oxgenous-containing functional groups in GOs with various oxidation degrees played a vital role in their removal via froth flotation.
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Affiliation(s)
- Luping Chang
- School of Chemical Engineering, Zhengzhou University, Zhengzhou, Henan, 450001, PR China
| | - Yijun Cao
- School of Chemical Engineering, Zhengzhou University, Zhengzhou, Henan, 450001, PR China; Henan Province Industrial Technology Research Institute of Resources and Materials, Zhengzhou University, Zhengzhou, Henan, 450001, PR China.
| | - Weijun Peng
- School of Chemical Engineering, Zhengzhou University, Zhengzhou, Henan, 450001, PR China.
| | - Chao Li
- Henan Province Industrial Technology Research Institute of Resources and Materials, Zhengzhou University, Zhengzhou, Henan, 450001, PR China
| | - Guixia Fan
- School of Chemical Engineering, Zhengzhou University, Zhengzhou, Henan, 450001, PR China
| | - Xiangyu Song
- School of Chemical Engineering, Zhengzhou University, Zhengzhou, Henan, 450001, PR China
| | - Chenxi Jia
- School of Chemical Engineering, Zhengzhou University, Zhengzhou, Henan, 450001, PR China
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