An innovative approach to develop microporous activated carbons in oxidising atmosphere. (10th July 2017)

• Record Type: Journal Article
• Authors: Suhas, ; Carrott, P.J.M.; Ribeiro Carrott, M.M.L.; Singh, Randhir; Singh, L.P.; Chaudhary, Monika
• Is Part Of: Journal of cleaner production. Volume 156(2017)
• Page Start: 549
• Page End: 555
• Publication Date: 2017-07-10
• Subjects: Air activation -- Demineralised kraft lignin -- Kraft lignin -- Microporous activated carbon; Factory and trade waste -- Management -- Periodicals; Manufactures -- Environmental aspects -- Periodicals; Déchets industriels -- Gestion -- Périodiques; Usines -- Aspect de l'environnement -- Périodiques; 628.5
• DOI: 10.1016/j.jclepro.2017.04.078
• Languages: English
• ISSNs: 0959-6526

Abstract

Abstract: The aim of the study was to investigate a rather oxidising atmosphere such as air for the development of a microporous activated carbon from demineralised kraft lignin. Demineralisation of lignin makes the precursor low in reactivity and hence can allow the use of more oxidising atmospheres. Control of the activation conditions allowed development of microporous activated carbons with type I N2 adsorption isotherms from demineralised kraft lignin having micropore volumes and mean micropore widths up to 0.374 cm 3 g −1 and 1.12 nm, respectively. A unique feature of this study is to prepare high surface area (1305 m 2 g −1 ) microporous activated carbon at a high temperature (950 °C) in air atmosphere. The effect of temperature on the surface area, micropore volume, mean micropore width and total pore volume was also studied for the development of activated carbons from the precursor in the range 550–1050 °C. Graphical abstract: Highlights: Oxidising atmosphere used for preparation of microporous activated carbons. Low reactivity of demineralised lignin allow to use more oxidising atmosphere. Carbons had up to 1305 m 2 g −1 surface area and 0.374 cm 3 g −1 micropore volume. The activated carbons had mean micropore width in range 0.80–1.46 nm.