Biochemical methane potential (BMP) test for Ageratum conyzoides to optimize ideal food to microorganism (F/M) ratio. Issue 4 (August 2018)

• Record Type: Journal Article
• Authors: Saha, Biswanath; Sathyan, Arun; Mazumder, Payal; Choudhury, Shinjini Paul; Kalamdhad, Ajay S.; Khwairakpam, Meena; Mishra, Umesh
• Is Part Of: Journal of environmental chemical engineering. Volume 6:Issue 4(2018)
• Page Start: 5135
• Page End: 5140
• Publication Date: 2018-08
• Subjects: Terrestrial weed -- Ageratum conyzoides -- Food to microorganism (F/M) ratio -- Biochemical methane potential -- Biogas -- Kinetics; Chemical engineering -- Environmental aspects -- Periodicals; Environmental engineering -- Periodicals; Chemical engineering -- Environmental aspects; Environmental engineering; Periodicals; 660.0286
• DOI: 10.1016/j.jece.2018.07.036
• Languages: English
• ISSNs: 2213-2929

Abstract

Graphical abstract: Highlights: Aggressive invasive of Ageratum conyzoides one of the significant issue. Utilization of this noxious biomass for biogas production. F/M ratios was studied to find out the ideal combination. Kinetic study was done to compared with actual methane production. 20 L batch reactor study also has been done to compare with 1 L scale. Abstract: Ageratum conyzoides is a rapidly colonizing invasive alien terrestrial weed that has become troublesome all over the world. This noxious weed shows adverse effects on the rice fields, which is a staple food crop in many countries, and it increases the productivity cast, hence this weed needs to be managed in a systematic way. This study was performed to identify the ideal food to microorganism (F/M) ratio for maximum methane production. BMP assay revealed that, F/M ratio 2 acquired maximum biogas production from the anaerobic digestion of A.conyzoides biomass with cow dung as the microorganism source. Highest methane production was achieved on 25th day around 205 ± 10 mL CH4 /g VS (volatile solid) and cumulative biogas production reach up to (4994 ± 25 mL). 80% of the total biogas produced was achieved within the first 30 days. Highest Volatile solid reduction was observed in F/M ratio 2 (45.30%) as compared to other ratios. Volatile fatty acid (VFA) and Soluble chemical oxygen demand (sCOD) also found to be highest in F/M ratio 2. In kinetic study, M value was found to be 4.0000 L CH4 in ratio 2.