Enhanced biogas production from rice straw by selective micronutrients under solid state anaerobic digestion (original) (raw)

Bioresource Technology, 2016

Abstract

Biomethanation of rice straw (RS) was studied in a batch mode at high total solid content (TSC) of 25% in outdoor pilot scale digesters. Performance was monitored for over six months by supplementing Nickel and Cobalt 15 and 10mgkg(-1) RS to each of mesophilic and thermophilic digesters for 35 and 21days retention time (RT), respectively. The average biogas production from mesophilic and thermophilic digesters were found varying 310 and 396Lkg(-1)TS, respectively. The corresponding figures for the control digesters were 225 and 270Lkg(-1)TS. Around 37 and 46% higher biogas production was recorded by supplementing the micronutrients in mesophilic and thermophilic digesters, respectively. Methane content in biogas was 57-59%. Matured compost had nitrogen, phosphorus and potassium contents of 1.0-1.2, 1.3-2.2, and 1.2-2.1%, respectively. The results demonstrated that the present process is faster, requires less than 85% water and produces green energy in addition to manure in less time compared to conventional process.

Anil Kurchania hasn't uploaded this paper.

Let Anil know you want this paper to be uploaded.

Ask for this paper to be uploaded.