title: Gasification: An alternative solution for energy recovery and utilization of vegetable market waste.
abstract: Vegetables waste is generally utilized through a bioconversion process or disposed of at municipal landfills, dumping sites or dumped on open land, emitting a foul odor and causing health hazards. The presents study deals with an alternative way to utilize solid vegetable waste through a thermochemical route such as briquetting and gasification for its energy recovery and subsequent power generation. Briquettes of 50 mm diameter were produced from four different types of vegetable waste. The bulk density of briquettes produced was increased 10 to 15 times higher than the density of the dried vegetable waste in loose form. The lower heating value (LHV) of the briquettes ranged from 10.26 MJ kg-1to 16.60 MJ kg-1depending on the type of vegetable waste. The gasification of the briquettes was carried out in an open core downdraft gasifier, which resulted in syngas with a calorific value of 4.71 MJ Nm-3at the gasification temperature between 889°C and 1011°C. A spark ignition, internal combustion engine was run on syngas and could generate a maximum load up to 10 kWe. The cold gas efficiency and the hot gas efficiency of the gasifier were measured at 74.11% and 79.87%, respectively. Energy recovery from the organic vegetable waste was possible through a thermochemical conversion route such as briquetting and subsequent gasification and recovery of the fuel for small-scale power generation.
authors.affiliation: 1 Thermochemical Conversion Division, Sardar Patel Renewable Energy Research Institute, Gujarat, India.
authors.forename: Sunil L
authors.initials: SL
authors.lastname: Narnaware
authors.affiliation: 1 Thermochemical Conversion Division, Sardar Patel Renewable Energy Research Institute, Gujarat, India.
authors.forename: Nsl
authors.initials: N
authors.lastname: Srivastava
authors.affiliation: 2 Bioconversion Divisions, Sardar Patel Renewable Energy Research Institute, Gujarat, India.
authors.forename: Samir
authors.initials: S
authors.lastname: Vahora
mesh_terms: D056804:Biofuels / Q000032:analysis*; D005523:Food Supply; D005740:Gases / Q000032:analysis; D012037:Refuse Disposal; D062611:Solid Waste / Q000032:analysis*; D014675:Vegetables; D018505:Waste Management / Q000379:methods*
chemical_list: D056804:Biofuels; D005740:Gases; D062611:Solid Waste
keywords: Vegetable market waste; briquettes; downdraft gasifier; gasification; power generation; syngas