Assessment of anaerobic digestion of food waste at psychrophilic conditions and effluent post-treatment by microalgae cultivation

Muñoz, Pedro; Cordero, Cecilia; Tapia, Ximena; Muñoz, Luis; Candia, Oscar

doi:10.1007/s10098-019-01803-z

Cited by 19 publications

(8 citation statements)

References 37 publications

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“…The increase of viscosity affects the mixing of the substrate with the inoculum, reducing the diffusion of soluble substrates and limitating the mass transfer, resulting in a reduction of affinity of microorganisms for the substrate. All this causes shortcomings in the kinetics of the process and generates a slow hydrolysis rate with a longer duration of the lag phase and low CH4 yields [ 24 , 112 , 120 ].…”

Section: Resultsmentioning

confidence: 99%

Research trends and strategies for the improvement of anaerobic digestion of food waste in psychrophilic temperatures conditions

Rodríguez-Jiménez

Pérez-Vidal

Torres–Lozada

2022

Heliyon

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Section: Resultsmentioning

confidence: 99%

Research trends and strategies for the improvement of anaerobic digestion of food waste in psychrophilic temperatures conditions

Rodríguez-Jiménez

Pérez-Vidal

Torres–Lozada

2022

Heliyon

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“…Psychrophilic digestion has been studied by different authors, reporting lower biogas yields [142,143] and solid accumulation [144], but successful experiences have also been described, with gas yields similar to those obtained at higher temperatures, indicating that the process was not significantly affected by the increase in the OLR, as would be expected [145,146]. These reports are important as many small-scale digesters operate under this regimen.…”

Section: Temperature and Digestion Performancementioning

confidence: 93%

High-Solid Anaerobic Digestion: Reviewing Strategies for Increasing Reactor Performance

et al. 2021

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High-solid and solid-state anaerobic digestion are technologies capable of achieving high reactor productivity. The high organic load admissible for this type of configuration makes these technologies an ideal ally in the conversion of waste into bioenergy. However, there are still several factors associated with these technologies that result in low performance. The economic model based on a linear approach is unsustainable, and changes leading to the development of a low-carbon model with a high degree of circularity are necessary. Digestion technology may represent a key driver leading these changes but it is undeniable that the profitability of these plants needs to be increased. In the present review, the digestion process under high-solid-content configurations is analyzed and the different strategies for increasing reactor productivity that have been studied in recent years are described. Percolating reactor configurations and the use of low-cost adsorbents, nanoparticles and micro-aeration seem the most suitable approaches to increase volumetric production and reduce initial capital investment costs.

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“…An increase in viscosity affects the mixing of the substrate with the inoculum and reduces the diffusion of soluble substrates, resulting in limited mass transfer efficiency, thereby decreasing the affinity of microorganisms to utilize the substrate. All of these create flaws in process kinetics, resulting in a slow hydrolysis rate, longer lag phase, and lower CH 4 yields because of the reduced bioavailability of the substrate [48][49][50][51][52].…”

Section: Enhancing Biogas Production In Cold Climatesmentioning

confidence: 99%

Household biogas technology in the cold climate of low-income countries: a review of sustainable technologies for accelerating biogas generation

Lohani,

Shaw,

Shrestha

et al. 2024

Prog. Energy

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Low-income countries have long benefited from household biogas plants for extracting clean energy and fertilizer. Despite the popularity, such ordinary plants do not have heating systems and suffer lower biogas production in cold regions or cold winters. This paper attempts a comprehensive review on research and development of household biogas technology in cold climate. This review specifically highlights the influence of temperature on biogas production, and technologies and recent advances in psychrophilic biogas production. Such measures are introduction of adapted inoculums, maneuvering operational parameters like hydraulic retention time (HRT) and organic loading rate (OLR), co-digestion approach and additives and digester designs. In addition to that, the review portrays adoption of low-cost heating arrangements including construction of greenhouse over bio-digesters, digester insulation, and integration of solar heating is crucial to enhance biogas production. Furthermore, this review identified gaps in the operation of bio-digesters under psychrophilic temperature in low-income countries and recommends operational consistencies in full scale psychrophilic biogas plants through development of standards, operational guidelines, and users' trainings.

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Assessment of anaerobic digestion of food waste at psychrophilic conditions and effluent post-treatment by microalgae cultivation

Cited by 19 publications

References 37 publications

Research trends and strategies for the improvement of anaerobic digestion of food waste in psychrophilic temperatures conditions

Research trends and strategies for the improvement of anaerobic digestion of food waste in psychrophilic temperatures conditions

High-Solid Anaerobic Digestion: Reviewing Strategies for Increasing Reactor Performance

Household biogas technology in the cold climate of low-income countries: a review of sustainable technologies for accelerating biogas generation

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