Adsorption of Methylene Blue on Sodium-Modified Bentonite from Southern Part of Henan

被引：0
|
作者：
Cheng F.-P. [1 ]
Yang D.-L. [1 ]
Chang L. [2 ]
Wu D.-F. [1 ]
机构：
[1] College of Chemical Engineering, Beijing University of Chemical Technology, Beijing
[2] School of Resources and Environment, University of Electronic Science and Technology of China, Chengdu
来源：
Huanjing Kexue/Environmental Science | 2022年 / 43卷 / 12期
关键词：
adsorption; adsorption mechanism; kinetics model; methylene blue; sodium-based bentonite;
D O I：
10.13227/j.hjkx.202202179
中图分类号：
学科分类号：
摘要：
Natural calcium-based bentonite from southern Henan province was used as raw material, and sodium-based bentonite was obtained through sodium modification. The removal efficiency of natural calcium-based bentonite (PRT-1), calcium-based purified bentonite (PRT-1T), and sodium-based bentonite (PRT-1Na) on MB was analyzed and compared by regulating the adsorbent dosage, methylene blue (MB) concentration, adsorption time, solution pH, and temperature. Meanwhile, the adsorption kinetics and adsorption mechanism of PRT-1T and PRT-1Na on MB were investigated. The results showed that PRT-1Na exhibited better adsorption of MB due to its larger specific surface area, higher cation exchange capacity, and more abundant hydroxyl structure. Under the same adsorption conditions, the adsorption effect of PRT-1Na was four times that of PRT-1, and PRT-1T was twice that of PRT-1. At 20℃, a pH of 6, PRT-1Na dosage of 1.0 g, adsorption time of 2 h, 500 mL of MB, and an initial concentration of 500 mg.L-1, the MB removal rate was as high as99. 89%. In addition, there was both physical and chemical adsorption of PRT-1Na on MB dye wastewater, and the Elovich model fitted well for both PRT-1T and PRT-1Na adsorption of MB dye wastewater; however, the pseudo first-order kinetic model fitted best for PRT-1Na. © 2022 Science Press. All rights reserved.
引用
收藏
页码：5676 / 5686
页数：10
相关论文
共 49 条
  • [1] Tkaczyk A, Mitrowska K, Posyniak A., Synthetic organic dyes as contaminants of the aquatic environment and their implications for ecosystems: A review [ J], Science of the Total Environment, 717, (2020)
  • [2] Joshi P, Sharma O P, Ganguly S K, Et al., Fruit waste-derived cellulose and graphene-based aerogels: Plausible adsorption pathways for fast and efficient removal of organic dyes, Journal of Colloid and Interface Science, 608, pp. 2870-2883, (2022)
  • [3] Chen B, Long F X, Chen S J, Et al., Magnetic chitosan biopolymer as a versatile adsorbent for simultaneous and synergistic removal of different sorts of dyestuffs from simulated wastewater, Chemical Engineering Journal, 385, (2020)
  • [4] Li W, Mu B N, Yang Y Q., Feasibility of industrial-scale treatment of dye wastewater via bio-adsorption technology [ J], Bioresource Technology, 277, pp. 157-170, (2019)
  • [5] Zhang J L, Yu H T, Quan X, Et al., Ceramic membrane separation coupled with catalytic ozonation for tertiary treatment of dyestuff wastewater in a pilot-scale study [ J ], Chemical Engineering Journal, 301, pp. 19-26, (2016)
  • [6] Kausar A, Iqbal M, Javed A, Et al., Dyes adsorption using clay and modified clay: A review, Journal of Molecular Liquids, 256, pp. 395-407, (2018)
  • [7] Selim K A, Youssef M A, El-Rahiem A, Et al., Dye removal using some surface modified silicate minerals, International Journal of Mining Science and Technology, 24, 2, pp. 183-189, (2014)
  • [8] Wang X X, Meng Z F, Liu X, Et al., Adsorption of BS- 18 amphoterically modified bentonite to tetracycline and norfloxacin combined pollutants, Environmental Science, 42, 5, pp. 2334-2342, (2021)
  • [9] Jain A, Balasubramanian R, Srinivasan M P., Hydrothermal conversion of biomass waste to activated carbon with high porosity: A review, Chemical Engineering Journal, 283, pp. 789-805, (2016)
  • [10] Li Y, Wang Z W, Xie X Y, Et al., Removal of Norfloxacin from aqueous solution by clay-biochar composite prepared from potato stem and natural attapulgite, Colloids and Surfaces A: Physicochemical and Engineering Aspects, 514, pp. 126-136, (2017)
12345