Waste biorefinery models towards sustainable circular bioeconomy: Critical review and future perspectives

Mohan, S. Venkata; Nikhil, G.N.; Chiranjeevi, P.; Reddy, C. Nagendranatha; Rohit, M.V.; Kumar, Avanish; Sarkar, Omprakash

doi:10.1016/j.biortech.2016.03.130

Cited by 699 publications

(218 citation statements)

References 72 publications

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“…One of the approaches to producing useful hydrocarbons from microalgae is based on the isoprene molecule. This short-chain volatile hydrocarbon is derived from the first products of the Calvin cycle of photosynthesis, and is produced at substantial rates under certain conditions of environmental stress [57]. The heterologous expression of isoprene synthase in combination with the enzymes of the mevalonic acid pathway has improved the isoprene yield of approximately 2.5 times, compared to that measured in the cyanobacteria transformed only with the isoprene synthase gene.…”

Section: Hydrocarbonsmentioning

confidence: 99%

“…The traditional sources of phosphorus at the laboratory level are mainly inorganic salts such as K2HPO4, KH2PO4, K3PO4, (NH4)3PO4. Although phosphorus is a minor component of the biomass of microalgae, it is still necessary to identify and evaluate new alternatives for recovery and use of this element, taking into account that for this particular nutrient, there is no a biogeochemical mechanism that recirculate it at the level of the biosphere, in contrast of what happens with carbon and nitrogen [57].…”

Section: Phosphorousmentioning

confidence: 99%

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Microalgae biorefineries: applications and emerging technologies

Giraldo

Romo-Buchelly

Arbeláez-Pérez

et al. 2018

DYNA

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Microalgae transform CO2 into a broad portfolio of biomolecules, and thus should be considered as a valuable biotechnological platform. Despite several research programs and global efforts to establish a sustainable microalgae-based industry, most applications have not transcended academic boundaries. This limitation raises from the high transformation costs when target products are biofuels or fertilizers. Microalgae biorefinery emerges as an alternative to improve economic competitiveness, as Under such a model scope, the process inputs come from industrial waste, while biomass exploitation prioritizes the highest value molecules followed by extraction of less valuable compounds. This review describes a wide range of microalgae exploitation schemes focused on new uses of its constituents, while discussing emerging technologies designed to improve production and efficiencies as well.Keywords: microalgae; biorefinery; biofuels; fertilizers; active biomolecules. Biorefinerías de microalgas: aplicaciones actuales y nuevas tecnologías en desarrolloResumen Las microalgas transforman el CO2 en un amplio portafolio de biomoléculas, por lo cual, son consideradas una valiosa plataforma biotecnológica. A pesar de múltiples programas de investigación y esfuerzos globales para establecer una industria sostenible basada en microalgas, la mayoría de las aplicaciones potenciales no han trascendido las fronteras académicas. Esta limitación se debe a los altos costos en la transformación del producto principalmente cuando se obtiene compuestos económicos como biocombustibles y fertilizantes. La biorefinería de microalgas surge como alternativa para incrementar la competitividad económica. En este modelo, los insumos del proceso provienen de residuos industriales, mientras que la explotación de la biomasa inicia con las moléculas de alto valor y finaliza con los compuestos menos valiosos. En esta revisión se describe un amplio abanico de esquemas de explotación de microalgas enfocado en nuevos usos de sus constituyentes. Además, se exploran las tecnologías emergentes destinadas a aprovechar esta biomasa de una manera más versátil y eficiente.

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Section: Hydrocarbonsmentioning

confidence: 99%

Section: Phosphorousmentioning

confidence: 99%

Microalgae biorefineries: applications and emerging technologies

Giraldo

Romo-Buchelly

Arbeláez-Pérez

et al. 2018

DYNA

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“…), solvents (ethanol, butanol, propanol, and acetone), etc. is the prime benefit of the acidogenic process apart from utilization of various forms of feedstocks including waste streams (Thang et al, 2010 ;Venkata Mohan et al, 2016). The gaseous products of acidogenesis (i.e., H2 and CH4) are renewable and important energy carriers which can be used individually as well as in a blend.…”

Section: Introductionmentioning

confidence: 99%

“…Biohydrogen-enriched CH4 (i.e., biohythane) would be a good alternative to address the increasing demands for compressed natural gas (CNG) as engine fuel. Acidogenic fermentation of waste has attracted significant interest and is deemed to be one of the emerging areas in the domain of bio-economy (Nigam and Singh, 2011;Venkata Mohan et al, 2016). methodology is a factorial based approach which helps to study a designed system with a set of independent variables (factors) over a specific region of interest (levels) (Venkata Mohan et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

Deciphering acidogenic process towards biohydrogen, biohythane, and short chain fatty acids production: multi-output optimization strategy

Sarkar

Mohan

2016

Biofuel Res. J.

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“…For example, by cascading levels of extraction of, initially high-value-added chemicals and products, then bio-materials and finally 100% (aka zero waste [168,[175][176][177]) bioprocessing of residual biomass and further a CO 2 biosequestration, closed loop, zero emission bio-refinery [178][179][180].…”

Section: Zero Waste: Formation Convergence Circularity and Critiquementioning

confidence: 99%

Exploring the Phenomenon of Zero Waste and Future Cities

Hannon

Zaman

2018

Urban Science

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Abstract:The evolving phenomenon of zero waste encompasses the theory, practice, and learning of individuals, families, businesses, communities, and government organisations, responding to perceptions of crisis and failure around conventional waste management. The diverse and growing body of international zero waste experience, can be portrayed as both, an entirely new and alternative waste management paradigm, and or, interpreted as overlapping, extending, and synergetic with a general evolution towards more sustainable waste/resource management practices. Combining the terms zero and waste provokes creative, intellectual, and pragmatic tensions, which provide a contemporary axis for necessary debate and innovation in this sphere of resource management. This commentary draws on an interdisciplinary perspective and utilises some elements of the critique of zero waste, as a lens to examine and better understand this heterogeneous global community of practice. In particular, how the concept and implementation of a zero waste goal can increase community engagement and be a catalyst for the design and management of a more circular urban metabolism and hence, more adaptive, resilient, and sustainable future (zero waste) cities.

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Waste biorefinery models towards sustainable circular bioeconomy: Critical review and future perspectives

Cited by 699 publications

References 72 publications

Microalgae biorefineries: applications and emerging technologies

Microalgae biorefineries: applications and emerging technologies

Deciphering acidogenic process towards biohydrogen, biohythane, and short chain fatty acids production: multi-output optimization strategy

Exploring the Phenomenon of Zero Waste and Future Cities

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