Details
| Original language | English |
|---|---|
| Pages (from-to) | 2727-2740 |
| Number of pages | 14 |
| Journal | Clean Technologies and Environmental Policy |
| Volume | 23 |
| Issue number | 9 |
| Early online date | 6 Sept 2021 |
| Publication status | Published - Nov 2021 |
Abstract
Abstract: The organic wastes generated from centralized wholesale markets from urban centres are predominantly disposed in dumpsites/landfills. Although anaerobic digestion (AD) of wastes is a promising option for producing bio-fuel, the key barrier is the limitation in the waste conversion efficiency that demands the need for the organic waste pretreatment. Hence, the extrusion pre-treatment of wastes prior to AD of slaughterhouse wastes (ESHW) with mixed vegetable, fruit and flower market wastes (EVMW), from a centralized-wholesale market in an urban area, was studied in batch and continuous AD processes. Batch experiments were carried out in mono- and co-digestion modes of extruded wastes. The results of the batch study revealed maximum specific methane yield of 354.9 mLN/g oDM during anaerobic co-digestion of extruded slaughterhouse wastes with mixed vegetable, fruit and flower market wastes in 1:3 proportion (ESHW/EVMW). Based on these results, lab-scale continuous reactor study (15 L) at varying organic loading rates (OLR) was carried out and the maximum biogas yield of 618.5 mLN/g oDM with a methane content of 62.6% and energy potential of 12.2 MJ/kg DM was obtained for extruded wastes at an OLR of 2.5 g oDM/L/d (E) when compared with non-extruded wastes that showed biogas potential of 503.7 mLN/g oDM (with energy potential of 10.2 MJ/kg DM). The outcome of the study revealed that extrusion pretreatment along with anaerobic co-digestion resulted in an increase in the biogas production therein showing enhancement in green energy production during anaerobic co-treatment of centralized wholesale market and slaughterhouse wastes in urban centres. Graphic Abstract: [Figure not available: see fulltext.].
Keywords
- Biogas, Continuous anaerobic reactor, Extrusion pre-treatment, Slaughterhouse, Solid waste, Urban centres, Vegetable market wastes
ASJC Scopus subject areas
- Environmental Science(all)
- Environmental Engineering
- Environmental Science(all)
- Environmental Chemistry
- Environmental Science(all)
- Management, Monitoring, Policy and Law
Sustainable Development Goals
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In: Clean Technologies and Environmental Policy, Vol. 23, No. 9, 11.2021, p. 2727-2740.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Enhancing methane production by anaerobic co-digestion of extruded organic wastes from slaughterhouse and vegetable market in batch and continuous processes
AU - Mozhiarasi, Velusamy
AU - Balakumar, Rajan
AU - Benish Rose, Pious Michealammal
AU - Speier, Christopher Josef
AU - Weichgrebe, Dirk
AU - Srinivasan, Shanmugham Venkatachalam
AU - Suthanthararajan, Rengasamy
N1 - Funding Information: Indo-German Science and Technology Centre (IGSTC) (Grant number 01DQ15007A) under Department of Science and Technology (DST) and the German Federal Ministry of Education and Research (BMBF) for funding under the 2 + 2 Project “Resource and energy reliability by co-digestion of veg-market and slaughterhouse waste”. Funding Information: The authors acknowledge the Indo-German Science and Technology Centre (IGSTC) (Grant number 01DQ15007A) under Department of Science and Technology (DST) and the German Federal Ministry of Education and Research (BMBF) for funding under the 2 + 2 Project “Resource and energy reliability by co-digestion of veg-market and slaughterhouse waste”. The authors also thank the Director, CSIR-Central Leather Research Institute for providing support to carry out the research work (CSIR-CLRI communication no. 1383). The authors also thank the Industrial partners of this project (Lehmann-UMT GmbH, Germany & Ramky Enviro Engineers Ltd., India) for their support.
PY - 2021/11
Y1 - 2021/11
N2 - Abstract: The organic wastes generated from centralized wholesale markets from urban centres are predominantly disposed in dumpsites/landfills. Although anaerobic digestion (AD) of wastes is a promising option for producing bio-fuel, the key barrier is the limitation in the waste conversion efficiency that demands the need for the organic waste pretreatment. Hence, the extrusion pre-treatment of wastes prior to AD of slaughterhouse wastes (ESHW) with mixed vegetable, fruit and flower market wastes (EVMW), from a centralized-wholesale market in an urban area, was studied in batch and continuous AD processes. Batch experiments were carried out in mono- and co-digestion modes of extruded wastes. The results of the batch study revealed maximum specific methane yield of 354.9 mLN/g oDM during anaerobic co-digestion of extruded slaughterhouse wastes with mixed vegetable, fruit and flower market wastes in 1:3 proportion (ESHW/EVMW). Based on these results, lab-scale continuous reactor study (15 L) at varying organic loading rates (OLR) was carried out and the maximum biogas yield of 618.5 mLN/g oDM with a methane content of 62.6% and energy potential of 12.2 MJ/kg DM was obtained for extruded wastes at an OLR of 2.5 g oDM/L/d (E) when compared with non-extruded wastes that showed biogas potential of 503.7 mLN/g oDM (with energy potential of 10.2 MJ/kg DM). The outcome of the study revealed that extrusion pretreatment along with anaerobic co-digestion resulted in an increase in the biogas production therein showing enhancement in green energy production during anaerobic co-treatment of centralized wholesale market and slaughterhouse wastes in urban centres. Graphic Abstract: [Figure not available: see fulltext.].
AB - Abstract: The organic wastes generated from centralized wholesale markets from urban centres are predominantly disposed in dumpsites/landfills. Although anaerobic digestion (AD) of wastes is a promising option for producing bio-fuel, the key barrier is the limitation in the waste conversion efficiency that demands the need for the organic waste pretreatment. Hence, the extrusion pre-treatment of wastes prior to AD of slaughterhouse wastes (ESHW) with mixed vegetable, fruit and flower market wastes (EVMW), from a centralized-wholesale market in an urban area, was studied in batch and continuous AD processes. Batch experiments were carried out in mono- and co-digestion modes of extruded wastes. The results of the batch study revealed maximum specific methane yield of 354.9 mLN/g oDM during anaerobic co-digestion of extruded slaughterhouse wastes with mixed vegetable, fruit and flower market wastes in 1:3 proportion (ESHW/EVMW). Based on these results, lab-scale continuous reactor study (15 L) at varying organic loading rates (OLR) was carried out and the maximum biogas yield of 618.5 mLN/g oDM with a methane content of 62.6% and energy potential of 12.2 MJ/kg DM was obtained for extruded wastes at an OLR of 2.5 g oDM/L/d (E) when compared with non-extruded wastes that showed biogas potential of 503.7 mLN/g oDM (with energy potential of 10.2 MJ/kg DM). The outcome of the study revealed that extrusion pretreatment along with anaerobic co-digestion resulted in an increase in the biogas production therein showing enhancement in green energy production during anaerobic co-treatment of centralized wholesale market and slaughterhouse wastes in urban centres. Graphic Abstract: [Figure not available: see fulltext.].
KW - Biogas
KW - Continuous anaerobic reactor
KW - Extrusion pre-treatment
KW - Slaughterhouse
KW - Solid waste
KW - Urban centres
KW - Vegetable market wastes
UR - http://www.scopus.com/inward/record.url?scp=85114314036&partnerID=8YFLogxK
U2 - 10.1007/s10098-021-02198-6
DO - 10.1007/s10098-021-02198-6
M3 - Article
AN - SCOPUS:85114314036
VL - 23
SP - 2727
EP - 2740
JO - Clean Technologies and Environmental Policy
JF - Clean Technologies and Environmental Policy
SN - 1618-954X
IS - 9
ER -