Engineered mesoporous biochar derived from rice husk for efficient removal of malachite green from wastewaters

Chen-Yu Tsai; Pei-Ying Lin; Shu-Ling Hsieh; Rajendranath Kirankumar; Anil Kumar Patel; Reeta-Rani Singhania; Cheng-Di Dong; Chiu-Wen Chen; Shuchen Hsieh

doi:10.1016/j.biortech.2022.126749

Engineered mesoporous biochar derived from rice husk for efficient removal of malachite green from wastewaters

Bioresour Technol. 2022 Mar:347:126749. doi: 10.1016/j.biortech.2022.126749. Epub 2022 Jan 20.

Authors

Chen-Yu Tsai¹, Pei-Ying Lin¹, Shu-Ling Hsieh², Rajendranath Kirankumar¹, Anil Kumar Patel³, Reeta-Rani Singhania³, Cheng-Di Dong³, Chiu-Wen Chen³, Shuchen Hsieh⁴

Affiliations

¹ Department of Chemistry, National Sun Yat-sen University, Kaohsiung 80424, Taiwan.
² Department of Seafood Science, National Kaohsiung University of Science and Technology, Kaohsiung 81157, Taiwan.
³ Department of Marine Environmental Engineering, National Kaohsiung University of Science and Technology, Kaohsiung 81157, Taiwan; Sustainable Environment Research Center, National Kaohsiung University of Science and Technology, Kaohsiung City 81157, Taiwan.
⁴ Department of Chemistry, National Sun Yat-sen University, Kaohsiung 80424, Taiwan; School of Pharmacy, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 80708, Taiwan; Regenerative Medicine and Cell Therapy Research Center, Kaohsiung Medical University, Kaohsiung 80708, Taiwan. Electronic address: shsieh@faculty.nsysu.edu.tw.

PMID: 35066130
DOI: 10.1016/j.biortech.2022.126749

Abstract

Extremely soluble Malachite green (MG) acts as potential carcinogen for aquatic life in polluted aqueous environments. Current study aims to modify rice husk derived biochar to improve its removal efficiency for MG from MG-containing wastewaters. The hydrothermal alkali activation was effective for preparing modified biochar (RHMB) from native biochar (RHB) derived from rice husk. After modification, surface area and pore volume of RHMB was determined respectively 434.62 m²g^-1 and 287.28 cm³g^-1, significantly improved from native RHB values 21.764 m²g^-1 and 65.53 cm³g^-1. Pseudo second order kinetic model fitted well. RHMB exhibits an equilibrium adsorption capacity of 373.02 mg g^-1. RHMB showed an excellent MG removal ability and was not susceptible to ion interference even at highly saline environments. It has exhibited 96.96 ± 1.17% removal efficiency of MG and is expected to be used as potential adsorbent for MG remediation from aquaculture wastewater and other MG containing industrial wastewaters.

Keywords: Adsorption; Biochar; Malachite green; Organic pollutant; RHMB.

MeSH terms

Adsorption
Charcoal
Kinetics
Oryza*
Rosaniline Dyes
Wastewater
Water Pollutants, Chemical* / analysis

Substances

Rosaniline Dyes
Waste Water
Water Pollutants, Chemical
biochar
malachite green
Charcoal