Biohydrogen and biomethane production from cassava wastewater in a two-stage anaerobic sequencing batch biofilm reactor

Mari, Ângelo Gabriel; Andreani, Cristiane Lurdes; Tonello, Tamiris Uana; Leite, Luana C.C.; Fernandes, José R.; Lopes, Deize Dias; Rodrigues, José Alberto Domingues; Gomes, Simone Damasceno

doi:10.1016/j.ijhydene.2019.07.054

Cited by 33 publications

(7 citation statements)

References 58 publications

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“…The energy estimation found in the literature for each substrate individually demonstrates that co‐digestion could have the potential to provide more expressive values of energy yield. Mari et al 58 . reported values around 290.8–407.2 MJ ton −1 of energy recovery from CW.…”

Section: Resultsmentioning

confidence: 99%

Methane production by anaerobic co‐digestion of dairy manure and cassava wastes for energy recovery

Martins

Fonseca

Faria

et al. 2022

J of Chemical Tech & Biotech

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BACKGROUND: In this study, the anaerobic co-digestion of cassava wastewater (CW), cassava bagasse (CB), and dairy manure (DM) was investigated to produce biogas with energy recovery. Mixture experimental design was performed to establish the proportion of each substrate, on the basis of total weight (%wt). The digestion was carried out under mesophilic conditions (35 °C) using a batch test. RESULTS:The best methane yields were 150.33 NmLCH 4 gVS −1 (114.46 NmLCH 4 gCOD −1 ) for the condition with 100% CW (C/N ratio = 14.04) and 130.43 normal mililiters of methane per gram of volatile solid (NmLCH 4 gVS −1 ) and 93.84 normal mililiters of methane per gram of chemical oxygen demand (NmLCH 4 gCOD −1 ) obtained with 66.7% DM, 16.7% CB and 16.7% CW (C/N ratio = 34.84). Experimental conditions containing high proportions of CB (above 33%) yielded high C/N ratios (above 52), resulting in low pH and high volatile fatty acid production, mainly acetic and butyric acids. Kinetics of methane production under optimal conditions were best described by Groot's multi-stage model.CONCLUSION: An energy balance for the best conditions were performed, leading to 452.86 MJ ton substrate −1 for a high DM content mixture experiment (DM = 66.7%, CB = 16.7%, CW = 16.7%); thereby showing that anaerobic co-digestion can replace 22.5% of the energy demanded by cassava processing industry.

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Section: Resultsmentioning

confidence: 99%

Methane production by anaerobic co‐digestion of dairy manure and cassava wastes for energy recovery

Martins

Fonseca

Faria

et al. 2022

J of Chemical Tech & Biotech

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“…In addition, cassava wastewater anaerobic digestion is efficient in biogas production (Montoro et al 2019;Mari et al 2020). Jiraprasertwong et al (2019) observed the generation of 328 ml of CH 4 g −1 COD (92% COD reduction) by applying a three-stage UASB reactor.…”

Section: Valorization Of Cassava Wastewatermentioning

confidence: 99%

Cassava wastewater valorization for the production of biosurfactants: surfactin, rhamnolipids, and mannosileritritol lipids

Schmidt

Vasconcelos

Vicente

et al. 2022

World J Microbiol Biotechnol

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The global production of cassava was estimated at ca. 303 million tons. Due to this high production, the cassava processing industry (cassava flour and starch) generates approximately ca. 0.65 kg of solid residue and ca. 25.3 l of wastewater per kg of fresh processed cassava root. The composition of the liquid effluent varies according to its origin; for example, the effluent from cassava flour production, when compared to the wastewater from the starch processing, presents a higher organic load (ca. 12 times) and total cyanide (ca. 29 times). It is worthy to highlight the toxicity of cassava residues regarding cyanide presence, which could generate disorders with acute or chronic symptoms in humans and animals. In this sense, the development of simple and low-cost eco-friendly methods for the proper treatment or reuse of cassava wastewater is a challenging, but promising path. Cassava wastewater is rich in macro-nutrients (proteins, starch, sugars) and micro-nutrients (iron, magnesium), enabling its use as a low-cost culture medium for biotechnological processes, such as the production of biosurfactants. These compounds are amphipathic molecules synthesized by living cells and can be widely used in industries as pharmaceutical agents, for microbial-enhanced oil recovery, among others. Amongst these biosurfactants, surfactin, rhamnolipids, and mannosileritritol lipids show remarkable properties such as antimicrobial, biodegradability, demulsifying and emulsifying capacity. However, the high production cost restricts the massive biosurfactant applications. Therefore, this study aims to present the state of the art and challenges in the production of biosurfactants using cassava wastewater as an alternative culture medium.

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“…Pason et al [39] studied sustainable hydrogen production using untreated cassava pulp and a consortium of thermophilic anaerobic bacteria. Mari et al [36] evaluated the energy potential of cassava starch wastewater in a two-stage system (BioH 2 + BioCH 4 ) composed of anaerobic sequencing batch biofilm reactors (AnSBBRs). Hydrogen production using cassava starch wastewater was also evaluated by Corbari et al [37], but using a fixed-bed anaerobic reactor (UAFBR).…”

Section: Biohydrogenmentioning

confidence: 99%

Integrated Biorefinery and Life Cycle Assessment of Cassava Processing Residue–From Production to Sustainable Evaluation

Andrade

Felisardo

Cruz

et al. 2022

Plants

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Commonly known as a subsistence culture, cassava came to be considered a commodity and key to adding value. However, this tuber’s processing for starch and flour production is responsible for generating a large amount of waste that causes serious environmental problems. This biomass of varied biochemical composition has excellent potential for producing fuels (biogas, bioethanol, butanol, biohydrogen) and non-energetic products (succinic acid, glucose syrup, lactic acid) via biorefinery. However, there are environmental challenges, leading to uncertainties related to the sustainability of biorefineries. Thus, the provision of information generated in life cycle assessment (LCA) can help reduce bottlenecks found in the productive stages, making production more competitive. Within that, this review concentrates information on the production of value-added products, the environmental impact generated, and the sustainability of biorefineries.

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Biohydrogen and biomethane production from cassava wastewater in a two-stage anaerobic sequencing batch biofilm reactor

Cited by 33 publications

References 58 publications

Methane production by anaerobic co‐digestion of dairy manure and cassava wastes for energy recovery

Methane production by anaerobic co‐digestion of dairy manure and cassava wastes for energy recovery

Cassava wastewater valorization for the production of biosurfactants: surfactin, rhamnolipids, and mannosileritritol lipids

Integrated Biorefinery and Life Cycle Assessment of Cassava Processing Residue–From Production to Sustainable Evaluation

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