Research Publications

A. Edward Membere

1.

Dr. A. Edward Membere *, Ugbebor John and Okeke Joshua

(Department of Civil and Environmental Engineering,

University of Port Harcourt, Port Harcourt, Rivers

State, Nigeria).

TITLE. Computational Model for Biogas Production from Solid

Waste

LINK. http://www.londoncss.co.uk/scientific-jurnalso.co.uk/web_documents/4020208_computational_model_biogas_production.pdf

 

 

Abstract

 

This study describes and evaluates a computational model for biogas production as a function of time using urea, cow and horse dung as inoculums. The inoculums were co-digested with Organic Fractions o Municipal Solid Waste

(OFMSW) at room temperature. A series of laboratory experiments using 1500 ml bio-digester and super saturated saline water flask were performed in batch operation mode for a period of 46 days. Four (4) batch digesters were utilized; each contained varying amounts of the inoculums with that of food waste kept constant. Biogas production was measured indirectly by water displacement method. The actual bio-digester potential was determined using the modelled equation to adequately describe the cumulative biogas production from these digesters (A-D). It was observed that the rates of removal of biodegradable fractions of the substrate could be obtained by plotting 1/t (lndyt/dt) against 1/t. The results showed that the first order kinetic constant of -0.0114 and Short Term Anaerobic Biodegradability Index (STABI) of 5.4495 for Digester A, containing 30 g of urea and 10 g of food waste; had the

Highest  yield of biogas with cumulative volume of 389.7 ml and an R2 value of 0.9934. Digester A was followed by Digester C with a STABI of 3.8401 and removal rate constant of -0.0273; which was in turn followed by Digester D.

 

Keywords:

Biogas, Anaerobic Digestion, Organic Fraction of Municipal Solid Waste, Biodegradability Index, urea.

 

2.

Dr. Edward A. Membere, John Ugbebor, Udoh E. Akan.

  (Department of Civil and Environmental Engineering, University of Port Harcourt, Port Harcourt, Rivers State, Nigeria.

TITLE: Biomechanization potential of organic fraction of municipal solid waste (OFMSW) from co-digestion of PIG and COW DUNG

Email: This email address is being protected from spambots. You need JavaScript enabled to view it.

LINK: http://www.londoncss.co.uk/scientific-jurnalso.co.uk/web_documents/4020208_computational_model_biogas_production.pdf

published on 26 November, 2013.

 

Abstract

 

The production of biogas, an alternative source of renewable energy from biomechanization of (OFMSW) were studied in different reactors (A-D) using a 5-liter digester at room temperature for a period of 30 days. The OFMSW were co-digested with pig and cow dung as inoculum. OFMSW addition was varied through proximate analysis determination for design dry weight of 6g, 16g, 18g and 26g for a fixed amount of pig and cow dung until maximum biogas production was achieved. The determined empirical formular of the OFMSW through ultimate analysis were A(C575H4300O300N12.5,S), B(C590H940O430N6S), C(C670H1050O460N20S), D(C500H770O320N10S). Biogas production was measured indirectly by water displacement method. The experimental result for digester D with 26g of OFMSW gave a higher value of 2.31L. The predictive result of OFMSW showed a parabolic relationship with a maximum volume of 2.52L and a mass of 68g beyond digester D. The actual digester potential was determined using modified first order equation to adequately described the cumulative biogas production from these digesters. It w

 

Keywords

Biogas, Organic Fraction of Municipal Solid Waste (OFMSW), Biodegradability index, Digesters, Anaerobic

http://www.indianjournals.com/ijor.aspx?target=ijor:ijes&volume=2&issue=4&article=053

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