Hydrogen production from sewage sludge via a fixed bed gasifier product gas

A method of monitoring sewage sludge pyrolysis and gasification was proposed. Samples of sludge were pyrolysed in Ar and gasified in CO 2 in a thermobalance. The evolved gases were analysed on the calibrated MS, the samples of sludge and solid residues at different stages of the processes were subjected to elemental analysis. The identification and the quantitative characterisation of chemical reactions were performed, based on the DTG and MS profiles.

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“…In the higher temperature range 755 -1000°C (with the maximum at 880°C) gasification of pyrolytic char occurs according to reaction 12,13 :…”

Section: A Quantitative Analysis Of the Gasification Productsmentioning

confidence: 99%

Application of the TG-MS system in studying sewage sludge pyrolysis and gasification

Bedyk

Nowicki

Stolarek

et al. 2008

Polish Journal of Chemical Technology

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“…In this study, the experiments were carried out in the pilot gasification plant consisting of a throated down-draft gasifier and a gas clean-up unit placed before the sample port. Fixed bed gasifiers are simple to use and downdraft gasifiers have been successfully used in other bio-fuels to generate a cleaner producer gas than other fixed bed systems (Dogru et al 2002, Midilli et al 2001. While, the specific objective is to carry out a fuel characterization of the producer gas generated from the closed-top throatless downdraft gasifier using groundnut shell fuel.…”

Section: Introductionmentioning

confidence: 99%

Gasification of ‘Loose’ Groundnut Shells in a Throathless Downdraft Gasifier

Kuhe

Aliyu

2015

Int. J. Renew. Energy Dev.

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Abstract:In this paper, gasification potential of biomass residue was investigated using a laboratory scale throatless downdraft gasifier. Groundnut shells gasified in a throatless downdraft gasifier could be used to produce a clean gas with a calorific value of 5.92 MJ/Nm3 and a combustible fraction of 45% v/v. Low moisture (8.6%) and ash content (3.19%) are the main advantages of groundnut shells for gasification. Gasification of shell waste products is a clean energy alternative to fossil fuels. The product gas can be used efficiently for heating and possible usage in internal combustion engines.

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“…Pyrolysis and gasification provide new opportunities for the conversion of the sewage sludge to clean fuel with no environmental impact. Both pyrolysis [6][7][8][9][10] and gasification [11][12][13] have been investigated by several researches and they all suggest that wastewater sludge has the potential for use as an energy source if processed in gasification or pyrolysis systems. The pyrolysis and gasification can reduce volume and fix heavy metal in the solid residue, while producing valuable product in the form of oil and syngas.…”

Section: Introductionmentioning

confidence: 99%