TY - JOUR

T1 - Variations in generation of vegetable, fruit and flower market waste and effects on biogas production, exergy and energy contents

AU - Mozhiarasi, Velusamy

AU - Speier, Christopher Josef

AU - Rose, P. M.Benish

AU - Mondal, Moni Mohan

AU - Pragadeesh, S.

AU - Weichgrebe, Dirk

AU - Srinivasan, Shanmugham Venkatachalam

N1 - Funding information: The evaluation of the datasets was supported by statistical analyses using the software Minitab®18 by Minitab Inc. The statistical analysis for correlation was conducted with a confidence level of 95%. Acknowledgements This work was supported by the German Federal Ministry of Education and Research (BMBF) and the Indian Department of Science and Technology (DST) under the Indo-German Science and Technology Centre (IGSTC) (Grant number 01DQ15007A) under the 2 + 2 Project “RESERVES—Resource and energy reliability by co-digestion of veg-market and slaughterhouse waste”. This work was supported by the German Federal Ministry of Education and Research (BMBF) and the Indian Department of Science and Technology (DST) under the Indo-German Science and Technology Centre (IGSTC) (Grant number 01DQ15007A) under the 2?+?2 Project ?RESERVES?Resource and energy reliability by co-digestion of veg-market and slaughterhouse waste?.

PY - 2019/5/1

Y1 - 2019/5/1

N2 - In India, large quantities of centrally generated wastes from vegetable, fruit and flower wholesale markets (VFF) are mostly disposed without treatment at open dumpsites. To implement sustainable waste treatment system including an adapted substrate management for Indian cities, detailed information on temporal mass and compositional fluctuations of VFF are fundamental. This article investigates the sources, extent and influence of fluctuating VFF characteristics, and examines its impact on biogas production and energy potentials. A comprehensive analysis of VFF in the city of Chennai revealed strong fluctuations of individual waste component shares of 34.5–142.9% (vegetables), 40.5–185.9% (fruits) and 33.0–244.9% (flowers) throughout the monitored year. Waste amounts occur independently of fresh vegetable, fruit and flower amounts entering the urban area. Specific biogas yields (SBY) of VFF varied from 403.7 to 570.5 mL N /g oDM during the analysis period of 4 months. A comparative analysis between calculated and measured SBY revealed that measured SBY are on average 9.7–22.4% lower, partly due to unfavourable C/N ratios. Despite fluctuations in VFF composition, monthly variations in theoretically available energy contents are not particularly pronounced if an adapted substrate management is applied for anaerobic treatment of VFF.

AB - In India, large quantities of centrally generated wastes from vegetable, fruit and flower wholesale markets (VFF) are mostly disposed without treatment at open dumpsites. To implement sustainable waste treatment system including an adapted substrate management for Indian cities, detailed information on temporal mass and compositional fluctuations of VFF are fundamental. This article investigates the sources, extent and influence of fluctuating VFF characteristics, and examines its impact on biogas production and energy potentials. A comprehensive analysis of VFF in the city of Chennai revealed strong fluctuations of individual waste component shares of 34.5–142.9% (vegetables), 40.5–185.9% (fruits) and 33.0–244.9% (flowers) throughout the monitored year. Waste amounts occur independently of fresh vegetable, fruit and flower amounts entering the urban area. Specific biogas yields (SBY) of VFF varied from 403.7 to 570.5 mL N /g oDM during the analysis period of 4 months. A comparative analysis between calculated and measured SBY revealed that measured SBY are on average 9.7–22.4% lower, partly due to unfavourable C/N ratios. Despite fluctuations in VFF composition, monthly variations in theoretically available energy contents are not particularly pronounced if an adapted substrate management is applied for anaerobic treatment of VFF.

KW - Anaerobic digestion

KW - Energy efficiency

KW - Specific biogas yield

KW - Substrate management

KW - Vegetable market waste

UR - http://www.scopus.com/inward/record.url?scp=85060208903&partnerID=8YFLogxK

U2 - 10.1007/s10163-019-00828-2

DO - 10.1007/s10163-019-00828-2

M3 - Article

AN - SCOPUS:85060208903

VL - 21

SP - 713

EP - 728

JO - Journal of Material Cycles and Waste Management

JF - Journal of Material Cycles and Waste Management

SN - 1438-4957

IS - 3

ER -