Adsorption Mechanism of Anionic Groups Found in Sulfonated Mulberry Stem Chemi-Mechanical Pulp (SCMP) for Removal of Methylene Blue Dye

Lianxin Luo; Ye Jin; Mingfu Li; Lingyu Hu; Guangxing Li; Yi Liu

doi:10.15376/biores.12.2.2452-2465

BioResources (Feb 2017)

Adsorption Mechanism of Anionic Groups Found in Sulfonated Mulberry Stem Chemi-Mechanical Pulp (SCMP) for Removal of Methylene Blue Dye

Lianxin Luo,
Ye Jin,
Mingfu Li,
Lingyu Hu,
Guangxing Li,
Yi Liu

Affiliations

Lianxin Luo: College of Light Industry and Food Engineering, Guangxi University, Nanning, 530004, P. R. China; Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Nanning 530004, P. R. China; China
Ye Jin: College of Light Industry and Food Engineering, Guangxi University, Nanning, 530004, P. R. China; Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Nanning 530004, P. R. China; China
Mingfu Li: College of Light Industry and Food Engineering, Guangxi University, Nanning, 530004, P. R. China; Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Nanning 530004, P. R. China; China
Lingyu Hu: College of Light Industry and Food Engineering, Guangxi University, Nanning, 530004, P. R. China; Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Nanning 530004, P. R. China; China
Guangxing Li: College of Light Industry and Food Engineering, Guangxi University, Nanning, 530004, P. R. China; Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Nanning 530004, P. R. China; China
Yi Liu: College of Light Industry and Food Engineering, Guangxi University, Nanning, 530004, P. R. China; Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Nanning 530004, P. R. China; China

DOI: https://doi.org/10.15376/biores.12.2.2452-2465
Journal volume & issue: Vol. 12, no. 2
pp. 2452 – 2465

Abstract

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The anionic groups (AGs) present in mulberry stem sulfonated chemi-mechanical pulp (SCMP) were studied relative to the adsorption of methylene blue (MB) dye. Adsorption isotherm experiments were carried out for the unbleached pulp, and for pulp that had been subjected to hydrogen peroxide (H2O2) bleaching. AGs present in the pulps appeared to govern the adsorption of MB. MB adsorption kinetics were evaluated for the bleached pulp. The methylene blue adsorption by SCMP, made from mulberry stems, conformed to the Langmuir adsorption model, which is consistent with a monolayer adsorption process. The adsorption thermodynamics showed that the adsorption process was spontaneous and exothermic. A pseudo-second order kinetic model described the adsorption mechanism of MB by the SCMP made from mulberry stems.

Anionic groups; Methylene blue; Absorption thermodynamics; Kinetic model

Published in BioResources

ISSN: 1930-2126 (Online)
Publisher: North Carolina State University
Country of publisher: United States
LCC subjects: Technology: Chemical technology: Biotechnology
Website: https://bioresources.cnr.ncsu.edu/

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