Application of locally available microbial inoculant to accelerate green waste composting at a community level. (December 2021)

• Record Type: Journal Article
• Authors: Mishra, Sandeep Kumar; Yadav, Kunwar D.
• Is Part Of: Bioresource technology reports. Volume 16(2021)
• Publication Date: 2021-12
• Subjects: Community-composting -- Garden waste -- In-vessel composting -- Microbial culture -- Yard waste; Biomass energy -- Periodicals; Biotransformation (Metabolism) -- Periodicals; Agricultural wastes -- Periodicals; Factory and trade waste -- Periodicals; Organic wastes -- Periodicals; Waste products as fuel -- Periodicals; Waste products as fuel; Organic wastes; Factory and trade waste; Biotransformation (Metabolism); Biomass energy; Agricultural wastes; Periodicals; Electronic journals; 662.88
• DOI: 10.1016/j.biteb.2021.100859
• Languages: English
• ISSNs: 2589-014X

Abstract

Abstract: The present study investigates application of locally available microbial inoculants to accelerate green waste composting and selection of best inoculant based upon selected physico-chemical and biological parameters for 45 days composting duration. Five inoculants were prepared using cow-dung, cow-urine, jaggery, processed food waste, vegetable waste, and mature compost, each prepared in different ways named as C1, C2, C3, C4, C5 and C0 (control) and sprayed over 500 kg green waste and fed into aerated in-vessels. The blades of reactors provided adequate aeration to diverse microbial populations in different inoculants to degrade recalcitrant compounds resulting in high thermophilic phase duration (3–8 days), high volatile solid reduction (13–29%), high germination index (85–97%), fecal population < 1000, NPK value in range of N (1.6–2.4%) P (2.8–5.2 mg/kg) and K (6.2–9.3 mg/kg) and low C/N ratio (14.5–20.2). Performance of C1 inoculant (processed food waste) was most effective followed by C5 inoculant (vegetable waste). Graphical abstract: Unlabelled Image Highlights: Application of different inoculants prepared from waste for degradation of green waste. Aerated in vessel accelerated green waste composting due to its blade design. Diverse group of microorganisms aided in rapid breakdown of lignocellulose compounds. Inoculant prepared by using processed food waste and vegetable waste proved to be best.