Open Access

ARTICLE

Surfactant-Modified Hydrophobic Biochar Derived from Laver (Porphyra haitanensis) with Superior Removal Performance for Kitchen Oil

by Jiaxing Sun¹, Lili Ji^1,*, Qianrui He¹, Ran Li¹, Xiaoyue Xia², Yaning Wang¹, Yi Yang², Lu Cai³, Jian Guo²

1 National Marine Facilities Aquaculture Engineering Technology Research Center, Zhejiang Ocean University, Zhoushan, 316022, China
2 College of Food and Medical, Zhejiang Ocean University, Zhoushan, 316022, China
3 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 2023, 11(8), 3227-3243. https://doi.org/10.32604/jrm.2023.027160

Received 17 October 2022; Accepted 01 December 2022; Issue published 26 June 2023

Abstract

In this study, a novel absorpent (MSAR600°C) with a hydrophobic surface and hierarchical porous structure for the removal of kitchen oil was facilely fabricated from the macroalgae, laver (Porphyra haitanensis) by incorporating high-temperature carbonization and alkyl polyglucosides (APG) and rhamnolipid (RL) surfactants modification. The characterization results showed MSAR600°C possessed a louts-leaf-like papillae microstructure with high contact angle (137.5°), abundant porous structure with high specific surface area (23.4 m²/g), and various oxygen-containing functional groups (-OH, C=O, C-O). Batch adsorption experiments were conducted to investigate the effect of adsorption time, temperature, pH, and absorbent dose on kitchen oil adsorption performance. Then the practical application for the removal of kitchen oil using MSAR600°C was also performed. The results showed that MSAR600°C had a higher removal efficiency for kitchen oil (75.98%), compared with the commercial detergent (72.3%). This study demonstrates an example of fabricating a green tableware detergent for enhanced removal performance of kitchen oil.

---

Graphic Abstract

---

Keywords

---