Anaerobic reactors with biofilter and different diameter-length ratios in cassava starch industry wastewater treatment

Kunzler, Kathia Regina; Gomes, Simone Damasceno; Piana, Pitágoras Augusto; Torres, Douglas Guedes Batista; Boas, Márcio Antônio Vilas; Tavares, Maria Hermínia Ferreira

doi:10.1590/s0100-69162013000400003

Cited by 14 publications

(9 citation statements)

References 16 publications

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“…As the support media, 12 bamboo stems were used, vertically arranged, which were 40cm in length and had a porosity of 74% (KUNZLER et al, 2013). The sludge used as inoculum was collected from bamboo pieces, used as support media in a pilot scale anaerobic reactor (total volume of 32.000L) by treating effluent from starch production.…”

Section: Methodsmentioning

confidence: 99%

Hydrogen production from cassava processing wastewater in an anaerobic fixed bed reactor with bamboo as a support material

Andreani

Torres

Schultz³

et al. 2015

Eng. Agríc.

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Attempting to associate waste treatment to the production of clean and renewable energy, this research sought to evaluate the biological production of hydrogen using wastewater from the cassava starch treatment industry, generated during the processes of extraction and purification of starch. This experiment was carried out in a continuous anaerobic reactor with a working volume of 3L, with bamboo stems as the support medium. The system was operated at a temperature of 36°C, an initial pH of 6.0 and under variations of organic load. The highest rate of hydrogen production, of 1.1 L.d-1.L-1, was obtained with application of an organic loading rate of 35 g.L-1.d-1, in terms of total sugar content and hydraulic retention time of 3h, with a prevalence of butyric and acetic acids as final products of the fermentation process. Low C/N ratios contributed to the excessive growth of the biomass, causing a reduction of up to 35% in hydrogen production, low percentages of H2 and high concentrations of CO2in the biogas.

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Section: Methodsmentioning

confidence: 99%

Hydrogen production from cassava processing wastewater in an anaerobic fixed bed reactor with bamboo as a support material

Andreani

Torres

Schultz³

et al. 2015

Eng. Agríc.

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“…Larsen et al (2013) obtained the best removal of 81.19% for the organic loading rate of 3.05 g L -1 d -1 , without the addition of glycerin. Kunzler et al, (2013) observed removal greater than 98% at the highest applied load (5.6 g L -1 d -1 ) and average removal efficiency of appro ximately 93% for reactors of different lengths, and Kuczman et al (2016) verified the maximu m removal efficiency of approximately 88% in the organic loading rate of 0.68 g L -1 d -1 . In general, methane-fueled reactors with continuous flow and packed bed have good removal rates, higher than 90%.…”

Section: Res Ults and Discussionmentioning

confidence: 63%

“…Using the wastewater fro m cassava starch extraction, Co lin et al (2007) evaluated the methane production in a horizontal anaerobic reactor with continuous flow, partially filled with p ieces of bamboo in a packed-bed. Using the same substrate, Kunzler et al (2013) tested the methane production, in horizontal reactors, with different diameter:length ratios, containing bamboo support mean, and varying the values of organic loading rates. Larsen et al (2013), using this same reactor configuration, obtained an increase in the volu metric biogas production with the addition of glycerin to the wastewater fro m the starch extraction; Kuczman et al (2014Kuczman et al ( , 2016 evaluated the biogas production and methane yield in a p ilot scale reactor with packed-bed of bamboo stalks and biogas recircu lation inside the reactor.…”

Section: Introductionmentioning

confidence: 99%

Methane Production From Cassava Starch Wastewater in Packed-Bed Reactor and Continuous Flow

et al. 2018

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The aim of this study was to evaluate the behavior of an anaerobic reactor of packed-bed and continuous flow, in relation to the biogas and methane production and the removal of organic load, from the wastewater of cassava starch extraction. For this purpose, were tested, in a reactor with a useful volume of 2.82 L and support mean of polypropylene filled with polyethylene foam, the organic loading rate (OLR) of 2.5, 5.0, 8.0 and 10.0 g L -1 d -1 . It was evaluated the removal of COD, the pH, the VA/TA ratio, the biogas and the methane production. It was concluded from this study that it is possible to produce biogas with methane percentages higher than 80% (maximum) and remove the organic load more than 90% under the tested conditions. In relation to stability, the reactor can be considered stable for the parameters, pH, the relationship between volatile acidity and total alkalinity and organic load removal. The best results in relation to the average volumetric biogas production (0.174 and 0.311 L g COD -1 ) were obtained for the higher organic loading rate (of 8 and 10 g L -1 d -1 , respectively) and the observed tendency is that with the increase of the organic loading rate, the specific biogas production will increase as well as the specific production of methane.

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“…In reactors, bamboo has been applied in the immobilization of microorganisms for different uses as biogas production and organic matter removal (KUNZLER et al, 2013;WENPING et al, 2012); quinoline biodegradation (ZHUANG et al, 2015), nitrate removal (LIU et al, 2012) and biohydrogen production (ANDREANI et al, 2015).Among the advantages of these reactors are the availability, low cost, higher superficial area, adsorption capacity and physical-chemical stability (LIN et. al., 2010).…”

Section: Introductionmentioning

confidence: 99%

Hydrogen Production and Performance of Anaerobic Fixed-Bed Reactors Using Three Support Arrangements From Cassava Starch Wastewater

et al. 2017

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Fixed-bed reactors have been considered promise alternatives for hydrogen production due to their simple construction and increase in the biomass retention. The purpose of this study was to investigate the biological production of hydrogen in anaerobic fixed-bed reactors with cassava starch wastewater used as substrate. Different support materials and arrangements of fixed-bed were used to evaluate the biological production of hydrogen in anaerobic continuous fixed-bed reactors, with cassava starch wastewater as substrate -recycled low-density polyethylene scraps, in packed bed (R1), recycled low-density polyethylene cylinders, in ordained bed (R3) and bamboo stems, in vertical arrangement (R2 and R4). In R1 the initial pH was adjusted for 6.0, with hydraulic retention time (HRT) of 4 h and organic loading rate (OLR) of 9.5 g.L -1 .d -1 . In R2 the initial pH was maintained in 4.5, with HRT of 4 h and OLR of 9.5 g. -1 ) were verified in the reactors with bamboo stems. In R4, the increase of OLR and the reduction of the initial pH contributed to the increase of butanol concentration in 1.8 times, diminishing the VHPR in 41.68%, yield in 63.95% and H2 in 37.6%, and indicating that the effect of pH is more pronounced with the increase of OLR, leading to the solventogenesis.

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Anaerobic reactors with biofilter and different diameter-length ratios in cassava starch industry wastewater treatment

Cited by 14 publications

References 16 publications

Hydrogen production from cassava processing wastewater in an anaerobic fixed bed reactor with bamboo as a support material

Hydrogen production from cassava processing wastewater in an anaerobic fixed bed reactor with bamboo as a support material

Methane Production From Cassava Starch Wastewater in Packed-Bed Reactor and Continuous Flow

Hydrogen Production and Performance of Anaerobic Fixed-Bed Reactors Using Three Support Arrangements From Cassava Starch Wastewater

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