Magnetic nanocellulose-based adsorbent for highly selective removal of malachite green from mixed dye solution

Xuelun Zhang; Chongpeng Qiu; Feng Li; Xuefeng Zhang; Mei-Chun Li; Jiulong Xie; Cornelis F de Hoop; Jinqiu Qi; Xingyan Huang

doi:10.1016/j.ijbiomac.2023.126752

Magnetic nanocellulose-based adsorbent for highly selective removal of malachite green from mixed dye solution

Int J Biol Macromol. 2023 Dec 31;253(Pt 2):126752. doi: 10.1016/j.ijbiomac.2023.126752. Epub 2023 Sep 8.

Authors

Xuelun Zhang¹, Chongpeng Qiu¹, Feng Li², Xuefeng Zhang³, Mei-Chun Li⁴, Jiulong Xie¹, Cornelis F de Hoop⁵, Jinqiu Qi⁶, Xingyan Huang⁷

Affiliations

¹ College of Forestry, Sichuan Agricultural University, Chengdu, Sichuan 611130, China.
² Research Institute of Characteristic Flowers and Trees, Chengdu Agricultural College, Chengdu 611130, China.
³ Department of Sustainable Bioproducts, Mississippi State University, MS 39762, USA.
⁴ School of Petroleum Engineering, China University of Petroleum (East China), Qingdao, Shandong 266580, China.
⁵ School of Renewable Natural Resources, Louisiana State University Agricultural Center, Baton Rouge, LA 70803, USA.
⁶ College of Forestry, Sichuan Agricultural University, Chengdu, Sichuan 611130, China. Electronic address: 13584@sicau.edu.cn.
⁷ College of Forestry, Sichuan Agricultural University, Chengdu, Sichuan 611130, China. Electronic address: hxy@sicau.edu.cn.

PMID: 37678694
DOI: 10.1016/j.ijbiomac.2023.126752

Abstract

Herein, a novel magnetic adsorbent (BC/AA/MN@Fe₃O₄) was successfully prepared from waste bamboo fiber tissue and montmorillonite, and subsequently applied for the highly selective removal of malachite green (MG, removal efficiency = 97.3 %) from the mixed dye solution of MG with methyl orange (MO, removal efficiency = 4.5 %). The magnetic adsorbent has a high porosity with abundant mesopores. In the single dye MG solution, the adsorbent could effectively remove MG over a wide pH range from 4 to 10, and the maximum adsorption capacity (q_max) was 2282.3 mg/g. Moreover, the magnetic adsorbent could remove MG from various solutions including mixed dye solution, high salinity solution, and real river water dye solution. The thermodynamic results proved that the adsorption process of MG was spontaneous and endothermic. The adsorption of MG was due to the comprehensive effects of electrostatic attraction, hydrogen bonding interactions and ions exchange, between the adsorbent and MG. Furthermore, the BC/AA/MN@Fe₃O₄ exhibited an excellent reusability with adsorption efficiency above 53.4 % after five consecutive cycles. Therefore, the prepared magnetic nanocellulose-based adsorbent was expected to be a promising material for highly selective adsorption and separation of MG from mixed dye solution.

Keywords: Malachite green; Nanocellulose; Organic dye; Selective adsorption.

MeSH terms

Adsorption
Hydrogen-Ion Concentration
Kinetics
Magnetic Phenomena
Rosaniline Dyes
Thermodynamics
Water Pollutants, Chemical* / analysis

Substances

malachite green
Water Pollutants, Chemical
Rosaniline Dyes