An innovative circular model for recycling the wastes into biochar using distillation units. (10th August 2022)

• Record Type: Journal Article
• Authors: Ahsan, Mohd.; Singh, Mayank; Singh, Raghvendra Pratap; Yadav, Vineet; Tandon, S.; Saikia, Binoy K.; Karak, Tanmoy; Khare, Puja
• Is Part Of: Journal of cleaner production. Volume 361(2022)
• Publication Date: 2022-08-10
• Subjects: Biochar production -- Sustainability -- Innovative circular model -- Carbon sequestration -- Greenhouse gas emissions; Factory and trade waste -- Management -- Periodicals; Manufactures -- Environmental aspects -- Periodicals; Déchets industriels -- Gestion -- Périodiques; Usines -- Aspect de l'environnement -- Périodiques; 628.5
• DOI: 10.1016/j.jclepro.2022.132258
• Languages: English
• ISSNs: 0959-6526

Abstract

Abstract: An innovative circular model was examined for the production of biochar in an ash pit (with 432 L volume and 350°–450° temperature) of essential oil distillation unit using different easily farm available feedstocks (13) for the sustainable use of resources and recycling of biomass and animal waste. The study demonstrated that residence time of 120 min was more suitable for biochar production as compared to 180 and 240 min. The biochar produced had 39–60% of yield, alkaline pH, 0.26–1.63 gm −3 bulk density, 11–78% water holding capacity, and 15–124 meq/100 g cation exchange capacity. Biochars from animal waste have greater potential for fertilizer supplements while distilled waste-derived biochar and crop residue can be more effective for carbon sequestration and reduction in greenhouse emissions. The estimated benefits to cost ratio was $54 to 2174 for soil application and $32–982 for selling purposes, hence could be sustainable and profitable for the farmers and aroma industry. Graphical abstract: Image 1 Highlights: An innovative circular model used for biochar production in ash pit of distillation units. Biochar yield varied from 35 to 62%. Production costs varied from 5 to 162 $/t under different scenarios. The profitability was 2645–8850 $/t on selling and 1914–53733 $/year on soil application. The model is sustainable and beneficial for the farmer and the aroma industry.