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

verfasst von

Velusamy Mozhiarasi, Christopher Josef Speier, P. M.Benish Rose, Moni Mohan Mondal, S. Pragadeesh, Dirk Weichgrebe, Shanmugham Venkatachalam Srinivasan

Abstract

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.

Organisationseinheit(en)

Institut für Siedlungswasserwirtschaft und Abfalltechnik

Externe Organisation(en)

Central Leather Research Institute

Typ

Artikel

Journal

Journal of Material Cycles and Waste Management

Band

21

Seiten

713-728

Anzahl der Seiten

16

ISSN

1438-4957

Publikationsdatum

01.05.2019

Publikationsstatus

Veröffentlicht

Peer-reviewed

Ja

ASJC Scopus Sachgebiete

Abfallwirtschaft und -entsorgung, Werkstoffmechanik

Ziele für nachhaltige Entwicklung

SDG 7 – Erschwingliche und saubere Energie, SDG 11 – Nachhaltige Städte und Gemeinschaften

Elektronische Version(en)

https://doi.org/10.1007/s10163-019-00828-2 (Zugang: Geschlossen)