Super-effective biochar adsorbents from Co-pyrolysis of rice husk and sewage sludge: Adsorption performance, advanced regeneration, and economic analysis

Q1 Environmental Science Bioresource Technology Reports Pub Date : 2025-02-01 DOI:10.1016/j.biteb.2025.102046

Behnam Rezvani , Ahmad Hallajisani , Omid Tavakoli

{"title":"Super-effective biochar adsorbents from Co-pyrolysis of rice husk and sewage sludge: Adsorption performance, advanced regeneration, and economic analysis","authors":"Behnam Rezvani , Ahmad Hallajisani , Omid Tavakoli","doi":"10.1016/j.biteb.2025.102046","DOIUrl":null,"url":null,"abstract":"<div><div>This study investigates the co-pyrolysis of rice husk and sewage sludge to produce unmodified biochar (UBC) and modified biochar (MBC) for contaminant removal. The maximum alizarin red S (ARS) adsorption appeared in sewage sludge to rice husk ratio of 0.8:0.2 and pyrolysis temperature of 400 °C. The biochar was modified by acid treatment using hydrochloric acid, nitric acid, and phosphoric acid. Various factors of the adsorption were evaluated. The adsorbents had remarkable adsorption capacities. The maximum adsorption capacity of the MBCs reached 1466.38 to 1524.18 mg/g. The adsorption process followed pseudo-second-order kinetics and the Freundlich isotherm model. Fourier transform infrared (FTIR) analysis showed the diverse functional groups. Brunauer-Emmett-Teller (BET), Field emission scanning electron microscopy (FESEM), energy dispersive X-ray spectroscopy (EDS), and Thermogravimetric analysis (TGA) were utilized. Furthermore, the UBC was regenerated using solvents and an advanced technique. Additionally, the techno-economic significance of the biochar production was assessed.</div></div>","PeriodicalId":8947,"journal":{"name":"Bioresource Technology Reports","volume":"29 ","pages":"Article 102046"},"PeriodicalIF":0.0000,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Bioresource Technology Reports","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2589014X25000283","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"Environmental Science","Score":null,"Total":0}

引用次数: 0

Abstract

This study investigates the co-pyrolysis of rice husk and sewage sludge to produce unmodified biochar (UBC) and modified biochar (MBC) for contaminant removal. The maximum alizarin red S (ARS) adsorption appeared in sewage sludge to rice husk ratio of 0.8:0.2 and pyrolysis temperature of 400 °C. The biochar was modified by acid treatment using hydrochloric acid, nitric acid, and phosphoric acid. Various factors of the adsorption were evaluated. The adsorbents had remarkable adsorption capacities. The maximum adsorption capacity of the MBCs reached 1466.38 to 1524.18 mg/g. The adsorption process followed pseudo-second-order kinetics and the Freundlich isotherm model. Fourier transform infrared (FTIR) analysis showed the diverse functional groups. Brunauer-Emmett-Teller (BET), Field emission scanning electron microscopy (FESEM), energy dispersive X-ray spectroscopy (EDS), and Thermogravimetric analysis (TGA) were utilized. Furthermore, the UBC was regenerated using solvents and an advanced technique. Additionally, the techno-economic significance of the biochar production was assessed.

Abstract Image