04370nas a2200433 a 4500 20260817162227.0 160816s2014 th u m rtt 000 a eng d .b12168701 AIT Thesis no.EV-14-09 Arora, Nitasha Anaerobic digestion of cassava pulp with co-substrates : effect of organic loading rate Pathum Thani, Thailand : Asian Institute of Technology, 2014 122 p. : ill. + 1 online resource Thesis ; no. EV-14-09 A thesis submitted in partial fulfillment of the requirements for the degree of Master of Science in Environmental Engineering and Management Thesis (M.Sc.) - Asian Institute of Technology, 2014 Cassava pulp is a major solid waste produced from starch industries. Although, it contains high starch content on dry weight basis, but it has potential to produce methane. To provide a sufficient amount of nutrient to microbial community in anaerobic digestion process pig manure as a co-substrate was applied. An experiment was conducted to examine the effect of organic loading rate (OLR) on the performance and stability of single stage semi continuous stir tank reactor (CSTR) treating with three different feedstock at mesophillic temperature. Three different feedstock was fed in three different reactors, 10 L reactor was fed with mixed cassava pulp and pig manure (CP: PM) at ratio 77:23 % (w/w), 15 L reactor was fed with mixed cassava pulp, pig manure and molasses at ratio 36:36:28 % (w/w) and, 20 L reactor was fed with mixed molasses and pig manure at ratio 54.5:45.5 % (w/w). Feedstock were prepared according to maintain C/N ratio 35. Operating parameters were monitored to evaluate the biogas productivity and VS removal at various organic loading rates (1.0, 2.0 and 4.0 Kg Vs/m³ .d). An experiment was conducted in three phases startup phase, operational phase and digestate management phase. The results from start up phase brought out that molasses and pig manure 54.5:45.5% (w/w) has potential to improve the methane production. In the operational phase increasing of organic loading rate affected the 15L (CP: PM: MO) and 20 L (PM: MO) reactor performance as biogas production increased while methane yield decreased when comparing to 1.0 Kg Vs/m³ .d of OLR. However, increasing of OLR did not affect the 10L (CP: PM) reactor. As the biogas production rate (2.5L/Lreactor volume/d) and methane yield (0.35m³ /kgVS) increased with higher OLR 4.0Kg Vs/m³ .d. Therefore cassava pulp with co-substrate showed stable performance with high methane yield with high VSremoval around 87.9% during higher organic loading rate. Although the use of molasses at the initial start-up stage was beneficial for the reactor. Cassava industry Environmental aspects Cassava industry Waste disposal Annachhatre, Ajit P., Chairperson Visvanathan, C., Examination Committee Nguyen, Thi Kim Oanh, Examination Committee Asian Institute of Technology Fellowship, Scholarship donor Asian Institute of Technology. Thesis ; no. EV-14-09 Full-Text http://203.159.5.9/ait-thesis/detail.php?q=B02582 .b12168701 mnait z 240405 0 160816 m a z 0 000:001:PDF:b1216870:002601:0:0:0:0:0:0 Abstract--AIT Thesis no.EV-14-09 n mnait mnait mnarc 20 40 Barcode : 30050120388250 CREATED : 2016-08-16 RECORD # : i13050539 LPATRON : 1026123 LCHKIN : 2017-03-05 # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 1 TOT CHKOUT : 11 TOT RENEW : 2 Barcode : 30050120379655 CREATED : 2016-08-16 RECORD # : i13050540 LPATRON : 1028254 LCHKIN : 2018-09-27 # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 2 TOT CHKOUT : 2 TOT RENEW : 1 Barcode : 30050120402358 CREATED : 2017-11-09 RECORD # : i13098317 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 4355 4355 0 0 0 0 MAIN MAIN mnait 2026-08-17 50.00 0 AIT Thesis no.EV-14-09 30050120388250 2026-08-17 16:22:27 1 2026-08-17 20 0 0 0 0 MAIN MAIN mnait 2026-08-17 50.00 0 AIT Thesis no.EV-14-09 30050120379655 2026-08-17 16:22:27 2 2026-08-17 20 0 0 0 0 MAIN MAIN mnarc 2026-08-17 0 AIT Thesis no.EV-14-09 30050120402358 2026-08-17 16:22:27 2026-08-17 40