Waste bio-refineries for the cassava starch industry: New trends and review of alternatives

Sánchez, Antonio Santos; Silva, Yuri Lopes; Kalid, Ricardo de Araújo; Cohim, Eduardo; Torres, Ednildo Andrade

doi:10.1016/j.rser.2017.02.007

Cited by 88 publications

(53 citation statements)

References 95 publications

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“…Cassava is recognised as a crop which requires low agrochemical input, as well as being one of the most draught complaisant crops. Hence, it thrives even in mediocre soils [1]. There has been a substantial increase in world production of cassava since 2001, with the peak reaching 293.01 million tons in 2015 (Fig.…”

Section: Introductionmentioning

confidence: 99%

Characterization Of Yellow Root Cassava And Food Products: Investigation Of Cyanogenic Glycosides And Pro-Vitamin A

Odoemelam

Percival

Ahmad

et al. 2020

Preprint

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Section: Introductionmentioning

confidence: 99%

Characterization Of Yellow Root Cassava And Food Products: Investigation Of Cyanogenic Glycosides And Pro-Vitamin A

Odoemelam

Percival

Ahmad

et al. 2020

Preprint

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“…Their residues are available in the fields after harvest (Zhang et al, 2003). The roots are collected and transported, while some stems are used for crop replating and most of the green mass is left in soil, which decompose and some nutrients return to the soil (Isahak et al, 2012;Sorapipatana and Yoosin, 2011;Liu et al, 2013;Sánchez et al, 2017). It was noted that few papers discussed the use of cassava residues by thermochemical processes as energy source.…”

Section: Introductionmentioning

confidence: 99%

Application of cassava harvest residues (Manihot esculenta Crantz) in biochemical and thermochemical conversion process for bioenergy purposes: A literature review

Rodrigues¹,

Cruz²,

Souza³

et al. 2018

Afr. J. Biotechnol.

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Bioenergy production from biomass and agricultural wastes has gained significant interest due to rising fossil fuel prices and their decrease in air pollutant emissions. This review paper evaluates the state-of-art for the several applications from cassava harvest residues and their use in bioenergy industry, using different thermochemical and biochemical processes. Regarding the great available literature for this biomass, several pretreatment techniques, including mechanical, chemical, biological, thermal, ultrasonic and wet explosion were observed. The use of cassava harvest residues for the biochemical pretreatments, for example, hydrolysis, fermentation and thermochemical processes, such as direct combustion, gasification, pyrolysis, fast pyrolysis and oxy-fuel combustion was also discussed. Therefore, studies are necessary in order to understand that the use of cassava residues in thermal processes can increase the viability of this feedstock for biofuels production and/or in power co-firing units. After extensive study, it was observed that informations are still lacking about the use of cassava harvest residues in other conversion processes, thus, new studies to discover more on the use of this biomass, in order to extend their application in the bioenergy market is encouraged.

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“…However, this characteristic also makes cassava wastewater a source of pollution . According to Magalhães et al, cassava wastewater is often discarded without treatment, causing serious environmental problems .…”

Section: Introductionmentioning

confidence: 99%

“…Among the different processes for wastewater treatment, studies have demonstrated that anaerobic digestion is a viable alternative due to the reduction of the organic matter content of the wastewater, as well as the possibility of generating products with economic and environmental value, such as biogas . Therefore, this option aggregates value to the agribusiness of cassava production and enables the replacement of firewood in cassava flour toasting ovens due the energy obtained from the biogas.…”

Section: Introductionmentioning

confidence: 99%

Viability of rapid startup and operation of UASB reactors for the treatment of cassava wastewater in the semi‐arid region of northeastern Brazil

et al. 2017

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The production of cassava flour generates wastewater with a high concentration of organic matter and nutrients, which gives this effluent potential as a source of both bioenergy and pollution. Thus, cassava wastewater needs to be properly treated prior to release into the environment. Different treatment processes are employed for this purpose, but studies involving up‐flow anaerobic sludge blanket (UASB) reactors without modifications are scarce due to the rapid acidification of cassava wastewater. Thus, the aim of the present study was to evaluate the rapid startup of UASB reactors at 30 °C for the cassava wastewater treatment. The reactor was operated under eight different conditions with a hydraulic retention time (HRT) of 8 or 12 h and organic loading rates (OLR) of 12.0 or 15.5 g COD · L−1 · d−1. The systems were evaluated based on chemical oxygen demand (COD) removal, the production of methane, and the stability of the volatile fatty acids/total alkalinity ratio. The UASB system with the best performance was that with the 8 h HRT and OLR of 12.0 g COD · L−1 · d−1, with COD removal rates ranging from 71 to 80 % and methane production of 0.260 L CH4 · g −1 CODremoved. The system offers a real‐scale prospect and is a promising option for the replacement of firewood in cassava flour toasting ovens, thereby contributing to the preservation of the semi‐arid Caatinga biome in northeastern Brazil.

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Waste bio-refineries for the cassava starch industry: New trends and review of alternatives

Cited by 88 publications

References 95 publications

Characterization Of Yellow Root Cassava And Food Products: Investigation Of Cyanogenic Glycosides And Pro-Vitamin A

Characterization Of Yellow Root Cassava And Food Products: Investigation Of Cyanogenic Glycosides And Pro-Vitamin A

Application of cassava harvest residues (Manihot esculenta Crantz) in biochemical and thermochemical conversion process for bioenergy purposes: A literature review

Viability of rapid startup and operation of UASB reactors for the treatment of cassava wastewater in the semi‐arid region of northeastern Brazil

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