Efficient removal of cationic dyes via activated carbon with ultrahigh specific surface derived from vinasse wastes

• Published in: Bioresource technology Vol. 322; p. 124540
• Main Authors: Li, Lindong, Wu, Mingbang, Song, Chuhan, Liu, Lin, Gong, Wenli, Ding, Yanhong, Yao, Juming
• Format: Journal Article
• Language: English
• Published: England Elsevier Ltd 01.02.2021
• Subjects: Activated carbon; Adsorption; Cationic dye; Charcoal; Coloring Agents; Methylene Blue - analysis; Ultrahigh specific surface; Vinasse; Water Pollutants, Chemical - analysis; Cationic dye; Adsorption; Ultrahigh specific surface; Activated carbon; Vinasse
• ISSN: 0960-8524; 1873-2976
• DOI: 10.1016/j.biortech.2020.124540

[Display omitted] •Feasible approach for converting waste vinasse into activated carbon was proposed.•AC had abundant micropores of 0.9613 cm3/g and ultrahigh specific surface areas of 2015 m2/g.•AC displayed superior performance with the maximum adsorption capacity of 2251 mg/g for MB.•Removal efficiency for industrial wastewater reached up to 99%. In this work, a simple and feasible approach for converting waste vinasse generated from the alcohol industries into high value-added activated carbon (AC) was proposed. The obtained AC possessed abundant micropores with micropore volume of 0.9613 cm3/g and ultrahigh specific surface areas (2015 m2/g), indicating prominent adsorption capacity. The adsorption ability of AC to cationic methylene blue (MB) was investigated systematically. The resultant AC exhibited superior adsorption ability to MB with a maximum amount of 2251 mg/g, derived from its excellent pore textural features and abundant surface O-containing functional groups. Moreover, AC showed excellent removal efficiency for treating industrial polyacrylonitrile wastewater with 99% removal within 60 min. Our results provide great inspirations in solid waste treatment and their high value-added transformation, meanwhile exploit a promising application of AC for practical wastewater purification.