Residual Glycerol from Biodiesel Manufacturing, Waste or Potential Source of Bioenergy: A Review

This review provides a summary of the research conducted on the use of crude glycerol, the major byproduct of the biodiesel industry, as substrate for anaerobic co-digestion and production of biogas. In general, for every 100 kg biodiesel produced, approximately 10 kg crude glycerol is generated. Be...

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Lenguaje:	English
Publicado:	Instituto de Investigaciones Agropecuarias, INIA 2011
Materias:	Anaerobic co-digestion glycerol biogas biodiesel digestate
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392011000300019
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spelling	oai:scielo:S0718-583920110003000192018-10-01Residual Glycerol from Biodiesel Manufacturing, Waste or Potential Source of Bioenergy: A Review Anaerobic co-digestion glycerol biogas biodiesel digestate This review provides a summary of the research conducted on the use of crude glycerol, the major byproduct of the biodiesel industry, as substrate for anaerobic co-digestion and production of biogas. In general, for every 100 kg biodiesel produced, approximately 10 kg crude glycerol is generated. Because this glycerol is expensive to purify for use in food, pharmaceutical, or cosmetic industries, biodiesel producers must seek alternative methods for its disposal. Several studies have demonstrated that the use of crude glycerol as a C source for fermentation and biogas generation is a promising alternative use for this waste material. The high C content of glycerol increases the C:N ratio in the mixture, avoiding the inhibition of the process by the excess of N increasing methane production of digesters by 50 to 200%. Anaerobic co-digestion of glycerol and a variety of residual biomasses may be a good integrated solution for managing these wastes and simultaneously producing a source of bioenergy in an environmentally friendly way. On the other hand, after anaerobic treatment of glycerol, an organic matter-rich solid waste is generated (digestate). The incorporation of digestates from glycerol co-digestion to soils constitutes an important source of organic matter and nutrients for plants. However, the potential of digestates as an organic soil amendment has not been sufficiently studied. The utilization of glycerol as a potential source of energy, rather than as a waste, seems to be a convenient way of lowering the costs of biodiesel production and making this emerging industry more competitive.info:eu-repo/semantics/openAccessInstituto de Investigaciones Agropecuarias, INIAChilean journal of agricultural research v.71 n.3 20112011-09-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392011000300019en10.4067/S0718-58392011000300019
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Anaerobic co-digestion glycerol biogas biodiesel digestate
spellingShingle	Anaerobic co-digestion glycerol biogas biodiesel digestate Residual Glycerol from Biodiesel Manufacturing, Waste or Potential Source of Bioenergy: A Review
description	This review provides a summary of the research conducted on the use of crude glycerol, the major byproduct of the biodiesel industry, as substrate for anaerobic co-digestion and production of biogas. In general, for every 100 kg biodiesel produced, approximately 10 kg crude glycerol is generated. Because this glycerol is expensive to purify for use in food, pharmaceutical, or cosmetic industries, biodiesel producers must seek alternative methods for its disposal. Several studies have demonstrated that the use of crude glycerol as a C source for fermentation and biogas generation is a promising alternative use for this waste material. The high C content of glycerol increases the C:N ratio in the mixture, avoiding the inhibition of the process by the excess of N increasing methane production of digesters by 50 to 200%. Anaerobic co-digestion of glycerol and a variety of residual biomasses may be a good integrated solution for managing these wastes and simultaneously producing a source of bioenergy in an environmentally friendly way. On the other hand, after anaerobic treatment of glycerol, an organic matter-rich solid waste is generated (digestate). The incorporation of digestates from glycerol co-digestion to soils constitutes an important source of organic matter and nutrients for plants. However, the potential of digestates as an organic soil amendment has not been sufficiently studied. The utilization of glycerol as a potential source of energy, rather than as a waste, seems to be a convenient way of lowering the costs of biodiesel production and making this emerging industry more competitive.
title	Residual Glycerol from Biodiesel Manufacturing, Waste or Potential Source of Bioenergy: A Review
title_short	Residual Glycerol from Biodiesel Manufacturing, Waste or Potential Source of Bioenergy: A Review
title_full	Residual Glycerol from Biodiesel Manufacturing, Waste or Potential Source of Bioenergy: A Review
title_fullStr	Residual Glycerol from Biodiesel Manufacturing, Waste or Potential Source of Bioenergy: A Review
title_full_unstemmed	Residual Glycerol from Biodiesel Manufacturing, Waste or Potential Source of Bioenergy: A Review
title_sort	residual glycerol from biodiesel manufacturing, waste or potential source of bioenergy: a review
publisher	Instituto de Investigaciones Agropecuarias, INIA
publishDate	2011
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392011000300019
_version_	1714205300595097600

Residual Glycerol from Biodiesel Manufacturing, Waste or Potential Source of Bioenergy: A Review

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