Open Access

ARTICLE

Facile Preparation of a Porous Biochar Derived from Waste Crab Shell with High Removal Performance for Diesel

Xiao Han¹, Zhaodi Wu¹, Yi Yang¹, Jian Guo¹, Yaning Wang², Lu Cai³, Wendong Song⁴, Lili Ji^2,*

1 College of Food and Medical, Zhejiang Ocean University, Zhoushan, 316022, China
2 Institute of Innovation & Application, Zhejiang Ocean University, Zhoushan, 316022, China
3 Donghai Science and Technology College, Zhejiang Ocean University, Zhoushan, 316000, China
4 College of Petrochemical and Energy Engineering, Zhejiang Ocean University, Zhoushan, 316022, China

* Corresponding Author: Lili Ji. Email:

(This article belongs to the Special Issue: Renewable Material from Agricultural Waste and By-Product and Its Applications)

Journal of Renewable Materials 2021, 9(8), 1377-1391. https://doi.org/10.32604/jrm.2021.015076

Received 19 November 2020; Accepted 04 January 2021; Issue published 08 April 2021

Abstract

In this study, a porous biochar material derived from waste crab shell was prepared by one-step hydrothermal carbonization and acetic acid activation method at 180°C, which was characterized by SEM, BET, XRD and FTIR. The results show that the as-prepared crab shell biochar (CSB) exhibits a fluffy irregular layered structure with abundant pores and oxygen-containing functional groups, which can facilitate the adsorption of diesel using CSB. In addition, batch adsorption experiments had been performed, effects of initial diesel concentration, adsorption time, adsorbent dosage and pH on the diesel adsorption using CSB were analyzed, which could be observed that CSB has high removal efficiency for diesel, and the maximum removal rate is up to 80.1%. The adsorption isotherms and kinetic studies were also investigated to determine the adsorption mechanism of diesel using CSB, the results show that the Langmuir model and the pseudo-second-order model are more suitable for describing the adsorption of diesel using CSB, indicating that the adsorption of diesel oil by CSB is monolayer chemical adsorption. This study will provide a theoretical basis for the high-value utilization of waste crab shell, which has a great potential in the treatment of oil spill.

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Keywords

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