Preparation of spiramycin fermentation residue derived biochar for effective adsorption of spiramycin from wastewater

Tong Gao; Wansheng Shi; Mingxing Zhao; Zhenxing Huang; Xiaoling Liu; Wenquan Ruan

doi:10.1016/j.chemosphere.2022.133902

Preparation of spiramycin fermentation residue derived biochar for effective adsorption of spiramycin from wastewater

Chemosphere. 2022 Jun:296:133902. doi: 10.1016/j.chemosphere.2022.133902. Epub 2022 Feb 7.

Authors

Tong Gao¹, Wansheng Shi², Mingxing Zhao³, Zhenxing Huang³, Xiaoling Liu⁴, Wenquan Ruan³

Affiliations

¹ School of Environment and Civil Engineering, Jiangnan University, Wuxi, 214122, China.
² School of Environment and Civil Engineering, Jiangnan University, Wuxi, 214122, China; Jiangsu Engineering Laboratory for Biomass Energy and Carbon Reduction Technology, Jiangnan University, Wuxi, 214122, China; Jiangsu Key Laboratory of Anaerobic Biotechnology, Jiangnan University, Wuxi, 214122, China. Electronic address: wsshi@jiangnan.edu.cn.
³ School of Environment and Civil Engineering, Jiangnan University, Wuxi, 214122, China; Jiangsu Engineering Laboratory for Biomass Energy and Carbon Reduction Technology, Jiangnan University, Wuxi, 214122, China; Jiangsu Key Laboratory of Anaerobic Biotechnology, Jiangnan University, Wuxi, 214122, China.
⁴ Chinese Research Academy of Environmental Sciences, Beijing, 100012, China.

PMID: 35143862
DOI: 10.1016/j.chemosphere.2022.133902

Abstract

Spiramycin (SPI) fermentation residue (SFR) is classified as hazardous waste in China because of the residual antibiotics in it. SFR disposal in the traditional way is costly and wasteful of resources. In this study, pyrolysis method was adopted to covert SFR to biochar for SPI removal from wastewater, and the SPI adsorption performance was investigated. The results showed that the optimal pyrolysis temperature was 700 °C as the prepared biochar BC700 exhibited the highest SPI removal efficiency. The specific surface area of BC700 was 451.68 m²/g, and the maximum adsorption capacity was 147.28 mg/g. The adsorption mechanism involved electrostatic interaction, pore filling, π-π interaction, hydrogen bonding, and the participation of C-C and O-CO functional groups in the adsorption. No residual SPI was detected in BC700 indicating the detoxification of SFR was achieved. Moreover, after recycling for 5 times, the SPI removal efficiency was still higher than 80.0%. Therefore, this study could provide a promising method for SFR disposal.

Keywords: Adsorption; Biochar; Detoxification; Spiramycin fermentation residue; Spiramycin removal.

MeSH terms

Adsorption
Charcoal / chemistry
Fermentation
Kinetics
Spiramycin*
Wastewater
Water Pollutants, Chemical* / analysis

Substances

Waste Water
Water Pollutants, Chemical
biochar
Charcoal
Spiramycin