A review of anaerobic digestion of slaughterhouse waste: effect of selected operational and environmental parameters on anaerobic biodegradability

Selormey, Gilbert Kofi; Barnes, Belinda; Kemausuor, Francis; Darkwah, Lawrence

doi:10.1007/s11157-021-09596-8

Cited by 29 publications

(18 citation statements)

References 55 publications

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“…Most studies agree that the best operational temperatures for AD are under mesophilic (20-45°C) or thermophilic (>45°C) conditions [104]. Temperature affects, either directly or indirectly, the solubility of substrate compounds and the specific growth rate of the microorganisms involved, provoking a change in the HRT, the pH, and the methane yield [104]. Among the literature, the most common range is the mesophilic conditions due to its lower energy cost requirements and the similar methane yield when compared with higher temperature conditions [105].…”

Section: Effect Of Initial Conditionsmentioning

confidence: 96%

“…Although both sources are widely related, they can be studied and controlled separately. The main operational conditions are temperature, pH, configuration of bioreactors, acclimation of inoculum, hydraulic retention time (HRT), organic load rate (OLR), and inoculum to substrate ratio (ISR) [1,104]. The main factors related to substrates composition are the C/N ratio and macro and micronutrients [1,5,6,104].…”

Section: Factors Influencing Anaerobic Co-digestionmentioning

confidence: 99%

Section: Effect Of Initial Conditionsmentioning

confidence: 99%

“…Among the literature, the most common range is the mesophilic conditions due to its lower energy cost requirements and the similar methane yield when compared with higher temperature conditions [105]. However, temperature variations during AD performance have shown significant reductions in methane yield and the kinetics of the process [104,106].…”

Section: Effect Of Initial Conditionsmentioning

confidence: 99%

“…Based on that, a pH between 4.6 and 6.0 favored the hydrolysis, acidogenesis, and acetogenesis stages, while a pH between 6.0 and 8.0 favored the methanogenesis phase [1]. Literature shows that the most suitable pH range is between 6.5 and 7.5, where the methane production is most benefited [1,104]. Furthermore, it has been reported that the initial pH of the substrate had a significant Progress in Microalgae Research -A Path for Shaping Sustainable Futures impact on methane yield, being the optimum value in the range of 7.0-7.5 for the co-digestion of swine manure and maize stalk [107].…”

Section: Effect Of Initial Conditionsmentioning

confidence: 99%

See 4 more Smart Citations

Anaerobic Co-Digestion of Microalgae and Industrial Wastes: A Critical and Bibliometric Review

Lama-Calvente¹,

Cubero²,

Fernández-Rodríguez³

et al. 2022

Progress in Microalgae Research - A Path for Shaping Sustainable Futures

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Microalgae are photosynthetic organisms able to grow faster than land plants and produce biomass with relatively high energy potential. Accumulated high-value compounds like lipids, minerals, or proteins have focused the attention of scientists due to the potential production of biofuels and other value-added products. However, several drawbacks regarding both the biochemical structure of these organisms and technological difficulties have prevented the industry for implementing a comprehensive low-cost process regarding energy and environmental contamination. Among these technologies, anaerobic digestion (AD) has greatly increased research attention because of its simplicity and the ability to produce easily recycle by-products. Moreover, anaerobic co-digestion (AcoD) has shown promising results as a method to bypass the AD problems of microalgae as a sole substrate. This review is focused on the recent trends and comparison of the AcoD process to maximize energy recovery from microalgae biomass and agro-industrial wastes. The yield of methane gas among the studied bibliography is compared and a critical review of published data and methods used is included.

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Section: Effect Of Initial Conditionsmentioning

confidence: 96%