Issue 52, 2018, Issue in Progress
From the journal:

RSC Advances

Superb adsorption capacity of biochar derived from leather shavings for Congo red†

Xueping Huang,a   Fan Yu,a   Qifan Penga  and  Yaqin Huang ORCID logo *a  

* Corresponding authors

a Beijing Laboratory of Biomedical Materials, Beijing Key Laboratory of Electrochemical Process and Technology for Material, Beijing University of Chemical Technology, Beijing, China
E-mail: huangyq@mail.buct.edu.cn

Abstract

Research on biochar for removal of dyes has been a hot topic because of its excellent eco-friendly and economical properties. In this study, leather shavings biochar (LSB) with high adsorption capacity was prepared and tested with Congo red as a model dye for adsorption. The research results show that the as-prepared biochar exhibits a porous structure, with a high specific surface area (2365 m2 g−1), and it would be beneficial for removing Congo red from effluents. More interestingly, adsorption capacity of LSB for Congo red was enhanced by chromium compounds on the surface of biochar through chelation and electrostatic interactions. Chelation occured between the chromium compounds and amino groups of Congo red. Adsorption data for Congo red on the biochar were successfully described by Langmuir isotherm and the pseudo-second order kinetics model. Langmuir maximum adsorption capacity of LSB at 30 °C reached 1916 mg g−1, which is much higher than that of conventional activated carbon (AC). Recycling experiment shows that LSB has a potential market for removing Congo red.

Graphical abstract: Superb adsorption capacity of biochar derived from leather shavings for Congo red

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Article information

DOI
https://doi.org/10.1039/C8RA06370B
Article type
Paper
Submitted
28 Jul 2018
Accepted
07 Aug 2018
First published
22 Aug 2018
This article is Open Access
Creative Commons BY-NC license

RSC Adv., 2018,8, 29781-29788

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Superb adsorption capacity of biochar derived from leather shavings for Congo red

X. Huang, F. Yu, Q. Peng and Y. Huang, RSC Adv., 2018, 8, 29781 DOI: 10.1039/C8RA06370B

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