Systematic optimization of biochars derived from corn wastes, pineapple leaf, and sugarcane bagasse for Cu(II) adsorption through response surface methodology

Kesinee Iamsaard; Chih-Huang Weng; Jing-Hua Tzeng; Jin Anotai; Astrid R Jacobson; Yao-Tung Lin

doi:10.1016/j.biortech.2023.129131

Systematic optimization of biochars derived from corn wastes, pineapple leaf, and sugarcane bagasse for Cu(II) adsorption through response surface methodology

Bioresour Technol. 2023 Aug:382:129131. doi: 10.1016/j.biortech.2023.129131. Epub 2023 May 12.

Authors

Kesinee Iamsaard¹, Chih-Huang Weng², Jing-Hua Tzeng³, Jin Anotai⁴, Astrid R Jacobson⁵, Yao-Tung Lin⁶

Affiliations

¹ Department of Soil and Environmental Sciences, National Chung Hsing University, Taichung 402227, Taiwan.
² Department of Civil Engineering, I-Shou University, Kaohsiung 84001, Taiwan.
³ Department of Soil and Environmental Sciences, National Chung Hsing University, Taichung 402227, Taiwan; Department of Civil and Environmental Engineering, University of Delaware, DE 19716, USA.
⁴ Department of Environmental Engineering, King Mongkut's University of Technology Thonburi, Bangkok 10140, Thailand.
⁵ Department of Plants, Soils and Climate, Utah State University, Logan, UT 84322, USA.
⁶ Department of Soil and Environmental Sciences, National Chung Hsing University, Taichung 402227, Taiwan. Electronic address: yaotung@nchu.edu.tw.

PMID: 37182679
DOI: 10.1016/j.biortech.2023.129131

Abstract

Many industrial wastewaters contain an appreciable amount of toxic copper (Cu(II)) that needs to be properly treated before discharging into receiving water body. Adsorption can effectively remove Cu(II) with optimized parameters. This study investigates the critical pyrolysis parameters of biochar derived from agricultural waste. Optimized biochar showed maximum Cu(II) adsorption capacity of 60.7, 36.8, and 35.5 mg g^-1 by PLB, SBB, and CWB at pyrolysis temperatures of 555 ℃, 559 ℃, 507 ℃, respectively, compared with commercial activated carbon (CAC, 40.8 mg g^-1). Surface characterization confirmed surface complexation, electrostatic interaction, and cation exchange capacity as Cu(II) removal mechanisms. The presence of humic acid reduced the Cu(II) removal of both CAC and optimized biochars. Optimized PLB displayed high reusability (87% Cu(II) removal efficiency) after five consecutive cycles using pressure cooker regeneration. With excellent Cu(II) adsorption capacity and reusability, the investigated biochars show high applicability potential to Cu(II)-laden wastewater treatment.

Keywords: Adsorption; Agricultural Wastes; Biochar; Optimization; Response Surface Methodology.

MeSH terms

Adsorption
Ananas*
Cellulose
Charcoal
Copper
Saccharum*
Water Pollutants, Chemical*
Zea mays

Substances

biochar
bagasse
Cellulose
Charcoal
Copper
Water Pollutants, Chemical