biofuels-congress-2017-posters-accepted-abstracts

Page 80

conferenceseries

.com

Volume 8, Issue 5 (Suppl)

J Bioremediat Biodegrad, an open access journal

ISSN: 2155-6199

Biofuels Congress 2017

September 05-06, 2017

September 05-06, 2017 | London, UK

Biofuels and Bioenergy

World Congress on

Biomethane, variables and wastes conversion: Optimal process conditions for enhanced

biomethanation of animal and fruit wastes

Oluwafunmilayo O Aworanti

Lautech, Nigeria

iomethanation of animal and fruit wastes is an environmental benign and cheap source of energy. However, biomethanation

has the problem of large hydraulic retention time and low gas production which has led to its underutilization. Therefore,

research is focused on biomethanation enhancement for efficient and high yield biomethane production. Laboratory scale

batch anaerobic digester was used to investigate the effects of operating variables [Total Solid Content (TSC), Temperature

(TEMP), Agitation (AGT) and Feed/Inoculum Ratio (FIR)] on biomethane generation from mixture of animal wastes (cattle

dung, pig dung and poultry droppings), co-substrates (orange, mango and pineapple wastes) and (chicken rumen). 5 different

slurries [Animal and Orange wastes with Inoculum (AOI); Animal and Mango wastes with Inoculum (AMI); Animal and

Pineapple wastes with Inoculum (API); Animal and the three fruits wastes with Inoculum (AOMPI) and Animal wastes (A)]

were charged into the digester. The process were carried out for 70 days at these conditions TSC (2- 10%), TEMP (25 -60ºC),

AGT (35- 70 rpm) and FIR (1:1, 1:2, 1:3, 2:1 and 3:1). Biomethane produced was collected continuously into a gas bag and

analysed using Gas Chromatography. One-Factor-at-A-Time was used to select TEMP, TSC and FIR for Central Composite

Design of experiment to obtain optimal conditions that maximise the yield of biogas (Y1), biomethane content (Y2) and

minimise the hydraulic retention time (Y3). Kinetic parameters of the process were estimated. Maximum yield (%) were

obtained in API having the range 43.5 - 65.5; 65.5 - 69.5 and 50.1- 66.8 for TSC, FIR and TEMP, respectively. Maximum of

7.2 kg (Y1), 71.54 % (Y2) and 8 days (Y3) were obtained at optimum conditions TEMP (55.2ºC), TSC (6.25 %) and FIR (1:2).

MG model best fitted the experimental data. Use of pineapple waste as a co-substrate is more productive in biomethanation.

Operating variables enhanced biomethanation.

J Bioremediat Biodegrad 2017, 8:5(Suppl)

DOI: 10.4172/2155-6199-C1-009