Experimental design technique is useful tool to compare anaerobic systems

Puebla, Yans Guardia; Rodríguez-­Pérez, Suyén; Hernández, Janet Jiménez; Sánchez-Girón, V.; Morgan-Sagastume, Juan Manuel; Noyola, A.

doi:10.7243/2052-6237-2-3

Cited by 5 publications

(13 citation statements)

References 27 publications

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“…During tests 1 and 2, the concentration of TP was approximately 40 mg/L and higher than the values for the CPW found in Beyene et al (2014), Rossmann et al (2013) and Guardia-Puebla et al (2014).…”

Section: Cpw Characteristicscontrasting

confidence: 54%

“…TSS for tests 1 and 2 corresponded to over 50 % of total organic matter represented as COD, which can be considered particularly high in comparison with values of 12 % (Guardia-Puebla et al 2014) or at most 25 % (Beyene et al 2014) obtained in other studies with CPW. However, over 50 % of TSS were in the volatile form, whereas dissolved COD exceeded 60 % of the total COD.…”

Section: Cpw Characteristicsmentioning

confidence: 40%

“…CPW has a high sugar content that suffers rapid hydrolysis and acidification and leads to a high production of volatile acids (Selvamurugan et al 2010a, b;Guardia-Puebla et al 2014). Although this condition is desirable for anaerobic digestion, it requires greater attention to the operational process control for the avoidance of instability or failure in the process caused by VFA accumulation (Guardia-Puebla et al 2014). PA in the substrate of tests 1 and 2 ranged between 261 and 338 mg/L, as a result of the lime addition for neutralization.…”

Section: Cpw Characteristicsmentioning

confidence: 99%

“…Likewise, the reactor configuration directly affects the efficiency of organic matter removal and methane production; therefore, the following anaerobic reactors have been tested for the treatment of CPW: horizontal anaerobic reactor (HAR), anaerobic fixed-bed reactors (FBR), upflow anaerobic sludge blanket (UASB) and hybrid UASB Oliveira 2013, Selvamurugan et al 2010a, b;Fia et al 2012;Guardia-Puebla et al 2014).…”

Section: Introductionmentioning

confidence: 99%

“…Similarly, the two-stage configuration of the UASB system can separate acidogenic and methanogenic phases for the enrichment of specific microorganisms in separate reactors, prevention of overload and inhibition of toxic elements, as phenols (Camarillo and Rincón 2012). The systems can also act on quickly acidified compounds present in the waste that can cause reactors to collapse in the CPW treatment (Guardia-Puebla et al 2014).…”

Section: Introductionmentioning

confidence: 99%

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Removal of phenols and methane production with coffee processing wastewater supplemented with phosphorous

Montoya

Ferro

Oliveira

2016

Int. J. Environ. Sci. Technol.

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This manuscript addresses the evaluation of the methane production and removal of organic matter and phenols from coffee fruits processing wastewater (CPW). The systems consisted of two serial upflow anaerobic sludge blankets (UASB1 and UASB2) and one sequential batch reactor (SBR). The organic loading rate (OLR) was increased from 3 to 6 g COD/L.d, and the hydraulic retention times (HRT) applied to UASB1, UASB2 and SBR were 60, 30 and 75 h, respectively. Similar OLRs were tested with raw CPW (tests 1 and 2) and CPW after the addition of Simple Super Phosphate (SSP) (tests 3 and 4). The COD removals in the two stages UASB ? SBR were approximately 85 % in tests 1 and 3 and 88 % in tests 2 and 4. The total phenols (TF) removal ranged between 70 and 92 %. The highest bioenergy productivities were achieved in UASB1, i.e., approximately 0.33 and 0.70 L CH 4 /L.d with OLR of approximately 3 and 6 g COD/L.d. Although, the addition of SSP did not induce a superior methane production or TF removal, it promoted enabled a faster biomass growth after acidification time. SBR was tested with two cycles-cycle 1 with anaerobic ? aerobic reactions (tests 1 and 2) and cycle 2 with anaerobic ? aerobic ? anaerobic reactions and lower sedimentation time (tests 3 and 4). Cycle 2 obtained higher COD and TF removal. The addition of SSP enhanced the SBR performance and increased between 13 and 24 % the TF removal.

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Section: Cpw Characteristicscontrasting

confidence: 54%

Section: Cpw Characteristicsmentioning

confidence: 40%

Section: Cpw Characteristicsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Removal of phenols and methane production with coffee processing wastewater supplemented with phosphorous

Montoya

Ferro

Oliveira

2016

Int. J. Environ. Sci. Technol.

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Bioprocess Parameters for Thermophilic and Mesophilic Biogas Production: Recent Trends and Challenges

Kumar

Neerudu

Gothalwal

et al. 2021

Clean Energy Production Technologies

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Predominance of syntrophic bacteria, Methanosaeta and Methanoculleus in a two-stage up-flow anaerobic sludge blanket reactor treating coffee processing wastewater at high organic loading rate

Suárez

Vantini

Duda

et al. 2018

Bioresource Technology

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The effect of the organic loading rate (OLR) on the performance and microbial composition of a two-stage UASB system treating coffee processing wastewater was assessed. The system was operated with OLR up to 18.2 g COD (L d) and effluent recirculation. Methane production and effluent characteristics were monitored. The microbial composition was examined through next-generation sequencing and qPCR from the anaerobic sludge of the first reactor (R1) operated at low and high OLR. The system showed operational stability, obtaining a maximum methane production of 2.2 L CH (L d), with a removal efficiency of COD and phenolic compounds of 84 and 73%, respectively. The performance of R1 at high OLR in steady conditions was associated with an appropriate proportion of nutrients (particularly Fe) and a marked increase of the syntrophic bacteria Syntrophus and Candidatus Cloacimonas, and acetoclastic and hydrogenotrophic methanogens, mainly Methanosaeta, Methanoculleus, Methanobacterium and Methanomassiliicoccus.

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Experimental design technique is useful tool to compare anaerobic systems

Cited by 5 publications

References 27 publications

Removal of phenols and methane production with coffee processing wastewater supplemented with phosphorous

Removal of phenols and methane production with coffee processing wastewater supplemented with phosphorous

Bioprocess Parameters for Thermophilic and Mesophilic Biogas Production: Recent Trends and Challenges

Predominance of syntrophic bacteria, Methanosaeta and Methanoculleus in a two-stage up-flow anaerobic sludge blanket reactor treating coffee processing wastewater at high organic loading rate

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