TY - JOUR
T1 - Biohydrogen, biomethane and bioelectricity as crucial components of biorefinery of organic wastes
T2 - A review
AU - Poggi-Varaldo, Héctor M.
AU - Munoz-Paez, Karla M.
AU - Escamilla-Alvarado, Carlos
AU - Robledo-Narváez, Paula N.
AU - Ponce-Noyola, M. Teresa
AU - Calva-Calva, Graciano
AU - Ríos-Leal, Elvira
AU - Galíndez-Mayer, Juvencio
AU - Estrada-Vázquez, Carlos
AU - Ortega-Clemente, Alfredo
AU - Rinderknecht-Seijas, Noemí F.
N1 - Funding Information:
The authors wish to thank ICYTDF-SECITI (grants PICCO 10-27 and 10-28) and CINVESTAV del IPN for financial support to the Group research on biorefineries and biofuels. KM-P, CE-A, and PNR-N, express their recognition to CONACYT for graduate scholarships. JG-M and NR-S acknowledge COFAA-IPN for academic scholarships.
PY - 2014/5
Y1 - 2014/5
N2 - Biohydrogen is a sustainable form of energy as it can be produced from organic waste through fermentation processes involving dark fermentation and photofermentation. Very often biohydrogen is included as a part of biorefinery approaches, which reclaim organic wastes that are abundant sources of renewable and low cost substrate that can be efficiently fermented by microorganisms. The aim of this work was to critically assess selected bioenergy alternatives from organic solid waste, such as biohydrogen and bioelectricity, to evaluate their relative advantages and disadvantages in the context of biorefineries, and nally to indicate the trends for future research and development. Biorefining is the sustainable processing of biomass into a spectrum of marketable products, which means: energy, materials, chemicals, food and feed. Dark fermentation of organic wastes could be the beach-head of complete biorefineries that generate biohydrogen as a first step and could significantly influence the future of solid waste management. Series systems show a better efficiency than one-stage process regarding substrate conversion to hydrogen and bioenergy. The dark fermentation also produces fermented by-products (fatty acids and solvents), so there is an opportunity for further combining with other processes that yield more bioenergy. Photoheterotrophic fermentation is one of them: photosynthetic heterotrophs, such as non-sulfur purple bacteria, can thrive on the simple organic substances produced in dark fermentation and light, to give more H2. Effluents from photoheterotrophic fermentation and digestates can be processed in microbial fuel cells for bioelectricity production and methanogenic digestion for methane generation, thus integrating a diverse block of bioenergies. Several digestates from bioenergies could be used for bioproducts generation, such as cellulolytic enzymes and saccharification processes, leading to ethanol fermentation (another bioenergy), thus completing the inverse cascade. Finally, biohydrogen, biomethane and bioelectricity could contribute to significant improvements for solid organic waste management in agricultural regions, as well as in urban areas.
AB - Biohydrogen is a sustainable form of energy as it can be produced from organic waste through fermentation processes involving dark fermentation and photofermentation. Very often biohydrogen is included as a part of biorefinery approaches, which reclaim organic wastes that are abundant sources of renewable and low cost substrate that can be efficiently fermented by microorganisms. The aim of this work was to critically assess selected bioenergy alternatives from organic solid waste, such as biohydrogen and bioelectricity, to evaluate their relative advantages and disadvantages in the context of biorefineries, and nally to indicate the trends for future research and development. Biorefining is the sustainable processing of biomass into a spectrum of marketable products, which means: energy, materials, chemicals, food and feed. Dark fermentation of organic wastes could be the beach-head of complete biorefineries that generate biohydrogen as a first step and could significantly influence the future of solid waste management. Series systems show a better efficiency than one-stage process regarding substrate conversion to hydrogen and bioenergy. The dark fermentation also produces fermented by-products (fatty acids and solvents), so there is an opportunity for further combining with other processes that yield more bioenergy. Photoheterotrophic fermentation is one of them: photosynthetic heterotrophs, such as non-sulfur purple bacteria, can thrive on the simple organic substances produced in dark fermentation and light, to give more H2. Effluents from photoheterotrophic fermentation and digestates can be processed in microbial fuel cells for bioelectricity production and methanogenic digestion for methane generation, thus integrating a diverse block of bioenergies. Several digestates from bioenergies could be used for bioproducts generation, such as cellulolytic enzymes and saccharification processes, leading to ethanol fermentation (another bioenergy), thus completing the inverse cascade. Finally, biohydrogen, biomethane and bioelectricity could contribute to significant improvements for solid organic waste management in agricultural regions, as well as in urban areas.
KW - Agricultural wastes
KW - batch dark fermentation
KW - bioelectricity
KW - biohydrogen
KW - biomethane
KW - biorefinery
KW - microbial fuel cell
KW - municipal wastes
UR - http://www.scopus.com/inward/record.url?scp=84904738452&partnerID=8YFLogxK
U2 - 10.1177/0734242X14529178
DO - 10.1177/0734242X14529178
M3 - Artículo de revisión
SN - 0734-242X
VL - 32
SP - 353
EP - 365
JO - Waste Management and Research
JF - Waste Management and Research
IS - 5
ER -