Open Access

ARTICLE

Magnetic Wakame-Based Biochar/Ni Composites with Enhanced Adsorption Performance for Diesel

by Hua Jing¹, Shiyao Lu¹, Lili Ji^1,*, Shijie Li¹, Baikang Zhu², Jian Guo³, Jiaxing Sun¹, Lu Cai⁴, Yaning Wang¹

1 National Marine Facilities Aquaculture Engineering Technology Research Center, Zhejiang Ocean University, Zhoushan, 316022, China
2 College of Petrochemical Engineering and Environment, Zhejiang Ocean University, Zhejiang Ocean University, Zhoushan, 316022, China
3 College of Food and Medical, Zhejiang Ocean University, Zhoushan, 316022, China
4 Institute of Ocean Higher Education, Zhejiang Ocean University, Zhoushan, 316022, China

* Corresponding Author: Lili Ji. Email:

(This article belongs to the Special Issue: Biochar Based Materials for a Green Future)

Journal of Renewable Materials 2022, 10(12), 3147-3165. https://doi.org/10.32604/jrm.2022.020215

Received 11 November 2021; Accepted 24 January 2022; Issue published 14 July 2022

Abstract

In this study, the magnetic wakame biochar/Ni composites were prepared with three activating reagents of H₃PO₄, ZnCl₂ and KOH by one-step pyrolysis activation, characterized by BET, SEM, TEM, FI-IR, XRD, Raman, and elemental analyzer, and their adsorption performance for diesel were also analyzed. The results showed that wakame biochar/Ni composites had larger specific surface area, abundant porous structure, and various reactive groups, rendering its enhancement of adsorption efficiency. The adsorption experiments indicated that the maximum adsorption capacities for diesel using WBPA 0.5, WBHZ 0.5 and WBPH 0.5 were 4.11, 8.83, and 13.47 g/g, respectively. The Langmuir model was more suitable for the adsorption isotherms process, and the Pseudo-second-order model could better describe the adsorption kinetic experimental. And the magnetic wakame biochar/Ni composites presented good stability and recyclability. This study provides a novel pattern for the high-value utilization of wakame, having huge potential in the treatment of oily wastewater.

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Keywords

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