Experimental and feasibility assessment of biogas production by anaerobic digestion of fruit and vegetable waste from Joburg Market

S. O. Masebinu, E. T. Akinlabi, E. Muzenda, A. O. Aboyade, C. Mbohwa

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Substrate-induced instability of anaerobic digestion from fruit and vegetable waste (FVW) results in low biogas yield. In this study, substrate management through fruit to vegetable mix ratio in a two-stage semi-continuous digester was investigated as a pathway for optimality of yield. The experiment conducted over 105 days with 62.52 kg of FVWs sourced from Joburg Market, South Africa showed that a stable process was achieved at a fruit to vegetable waste mix ratio of 2.2:2.8. At this ratio, optimal organic loading rate ranged between 2.68 and 2.97 kg VS/m3-d which resulted in a specific biogas yield of 0.87 Nm3/kg VS with 57.58% methane on average. The results of the experimental study were used as a feasibility assessment for a full-scale 45 tonnes/d plant for Joburg Market considering three energy pathways. The plant will produce 1,605,455 Nm3/y of biogas with the potential for offsetting 15.2% of the Joburg Market energy demand. Conversion of all biogas to biomethane was the most economically attractive energy pathway with a net present value of $2,428,021, an internal rate of return of 16.90% and a simple payback period of 6.17 years. This route avoided the greenhouse gas emission of 12,393 tonnes CO2, eq. The study shows that the anaerobic digestion of FVWs as sole substrate is possible with financial and environmental attractiveness.

Original languageEnglish
Pages (from-to)236-250
Number of pages15
JournalWaste Management
Volume75
DOIs
Publication statusPublished - May 1 2018
Externally publishedYes

Fingerprint

biogas
fruit
market
substrate
vegetable
energy
greenhouse gas
experimental study
methane
vegetable waste
anaerobic digestion
experiment
rate

All Science Journal Classification (ASJC) codes

  • Waste Management and Disposal

Cite this

@article{d2ea1692735c4529ab51f68af57eebcd,
title = "Experimental and feasibility assessment of biogas production by anaerobic digestion of fruit and vegetable waste from Joburg Market",
abstract = "Substrate-induced instability of anaerobic digestion from fruit and vegetable waste (FVW) results in low biogas yield. In this study, substrate management through fruit to vegetable mix ratio in a two-stage semi-continuous digester was investigated as a pathway for optimality of yield. The experiment conducted over 105 days with 62.52 kg of FVWs sourced from Joburg Market, South Africa showed that a stable process was achieved at a fruit to vegetable waste mix ratio of 2.2:2.8. At this ratio, optimal organic loading rate ranged between 2.68 and 2.97 kg VS/m3-d which resulted in a specific biogas yield of 0.87 Nm3/kg VS with 57.58{\%} methane on average. The results of the experimental study were used as a feasibility assessment for a full-scale 45 tonnes/d plant for Joburg Market considering three energy pathways. The plant will produce 1,605,455 Nm3/y of biogas with the potential for offsetting 15.2{\%} of the Joburg Market energy demand. Conversion of all biogas to biomethane was the most economically attractive energy pathway with a net present value of $2,428,021, an internal rate of return of 16.90{\%} and a simple payback period of 6.17 years. This route avoided the greenhouse gas emission of 12,393 tonnes CO2, eq. The study shows that the anaerobic digestion of FVWs as sole substrate is possible with financial and environmental attractiveness.",
author = "Masebinu, {S. O.} and Akinlabi, {E. T.} and E. Muzenda and Aboyade, {A. O.} and C. Mbohwa",
year = "2018",
month = "5",
day = "1",
doi = "10.1016/j.wasman.2018.02.011",
language = "English",
volume = "75",
pages = "236--250",
journal = "Waste Management",
issn = "0956-053X",
publisher = "Elsevier Ltd",

}

Experimental and feasibility assessment of biogas production by anaerobic digestion of fruit and vegetable waste from Joburg Market. / Masebinu, S. O.; Akinlabi, E. T.; Muzenda, E.; Aboyade, A. O.; Mbohwa, C.

In: Waste Management, Vol. 75, 01.05.2018, p. 236-250.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Experimental and feasibility assessment of biogas production by anaerobic digestion of fruit and vegetable waste from Joburg Market

AU - Masebinu, S. O.

AU - Akinlabi, E. T.

AU - Muzenda, E.

AU - Aboyade, A. O.

AU - Mbohwa, C.

PY - 2018/5/1

Y1 - 2018/5/1

N2 - Substrate-induced instability of anaerobic digestion from fruit and vegetable waste (FVW) results in low biogas yield. In this study, substrate management through fruit to vegetable mix ratio in a two-stage semi-continuous digester was investigated as a pathway for optimality of yield. The experiment conducted over 105 days with 62.52 kg of FVWs sourced from Joburg Market, South Africa showed that a stable process was achieved at a fruit to vegetable waste mix ratio of 2.2:2.8. At this ratio, optimal organic loading rate ranged between 2.68 and 2.97 kg VS/m3-d which resulted in a specific biogas yield of 0.87 Nm3/kg VS with 57.58% methane on average. The results of the experimental study were used as a feasibility assessment for a full-scale 45 tonnes/d plant for Joburg Market considering three energy pathways. The plant will produce 1,605,455 Nm3/y of biogas with the potential for offsetting 15.2% of the Joburg Market energy demand. Conversion of all biogas to biomethane was the most economically attractive energy pathway with a net present value of $2,428,021, an internal rate of return of 16.90% and a simple payback period of 6.17 years. This route avoided the greenhouse gas emission of 12,393 tonnes CO2, eq. The study shows that the anaerobic digestion of FVWs as sole substrate is possible with financial and environmental attractiveness.

AB - Substrate-induced instability of anaerobic digestion from fruit and vegetable waste (FVW) results in low biogas yield. In this study, substrate management through fruit to vegetable mix ratio in a two-stage semi-continuous digester was investigated as a pathway for optimality of yield. The experiment conducted over 105 days with 62.52 kg of FVWs sourced from Joburg Market, South Africa showed that a stable process was achieved at a fruit to vegetable waste mix ratio of 2.2:2.8. At this ratio, optimal organic loading rate ranged between 2.68 and 2.97 kg VS/m3-d which resulted in a specific biogas yield of 0.87 Nm3/kg VS with 57.58% methane on average. The results of the experimental study were used as a feasibility assessment for a full-scale 45 tonnes/d plant for Joburg Market considering three energy pathways. The plant will produce 1,605,455 Nm3/y of biogas with the potential for offsetting 15.2% of the Joburg Market energy demand. Conversion of all biogas to biomethane was the most economically attractive energy pathway with a net present value of $2,428,021, an internal rate of return of 16.90% and a simple payback period of 6.17 years. This route avoided the greenhouse gas emission of 12,393 tonnes CO2, eq. The study shows that the anaerobic digestion of FVWs as sole substrate is possible with financial and environmental attractiveness.

UR - http://www.scopus.com/inward/record.url?scp=85042374476&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85042374476&partnerID=8YFLogxK

U2 - 10.1016/j.wasman.2018.02.011

DO - 10.1016/j.wasman.2018.02.011

M3 - Article

AN - SCOPUS:85042374476

VL - 75

SP - 236

EP - 250

JO - Waste Management

JF - Waste Management

SN - 0956-053X

ER -