Details

Autor(en) / Beteiligte

• Zhang, Yanzhuo
• Sun, Yutai
• He, Rui
• Zhao, Jing
• Wang, Jiqin
• Yu, Tonghuan
• Zhang, Xiaozhuan
• Bildyukevich, Alexandr V.

Titel

Effects of excess sludge composting process, environmentally persistent free radicals, and microplastics on antibiotics degradation efficiency of aging biochar

Ist Teil von

• Bioresource technology, 2024-02, Vol.393, p.130070-130070, Article 130070

Ort / Verlag

England: Elsevier Ltd

Erscheinungsjahr

2024

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• [Display omitted] •Compost aging affects the physicochemical properties of biochar.•Addition of PS increased the concentration of EPFRs.•Biochar increased the bacterial community in compost.•The concentration of EPFRs affect the degradation efficiency. Simulation of microbial aging biochar in compost is an important index for evaluating the biochar degradation efficiency of antibiotics. In this study, biochar was prepared by adding microplastics (MPs) to sludge, and the degradation effect of biochar/(peroxymonosulfate, PMS) on antibiotics was evaluated during the compost aging process of biochar. After the compost aging of biochars, the antibiotic degradation efficiency of HPBC500, HPBC500 + polystyrene (PS), HPBC900/PMS, and HPBC900 + PS/PMS decreased by 6.47, 15.2, 10.16, and 10.33 %, respectively. Environmentally persistent free radicals (EPFRs) and defect structure were the main contributors to the activation of PMS. EPFRs produced through PS pyrolysis of biochar exhibited strong reactivity but poor stability during the degradation of antibiotics. Biochar enhanced the growth of microorganisms in compost but reduced its specific surface area. The antibiotic degradation efficiency of the biochar was positively correlated with the concentration of EPFRs. This study elucidated the durability of different biochar toward antibiotic degradation.