Anaerobic co-digestion of sugarcane press mud with vinasse on methane yield

González, Lisbet Mailin López; Reyes, Ileana Pereda; Romero, Osvaldo Romero

doi:10.1016/j.wasman.2017.07.016

Cited by 83 publications

(37 citation statements)

References 20 publications

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“…As the OLR increased from 0.25 to 1.0 g COD/L·d, the methane production rate (MPR) of RM gradually increased from 86.5 to 249.0 mL/L·d, whereas the methane yield (MY; per substrate COD fed) decreased from 320 to 230 mL/g COD fed (Table 1). Nevertheless, the MY values are still reasonable and comparable to those previously reported in mesophilic digesters treating sulfur-rich feedstocks including Ulva biomass [21,27,28], and MY often tends to decrease with increasing OLR [29][30][31]. On the other hand, the MPR of RT gradually increased from 57.3 to 156.0 mL/L·d with increasing OLR from 0.25 to 0.75 g COD/L·d, but a further increase in OLR to 1.0 g COD/L·d caused a significant drop in MPR to 33.1 mL/L·d.…”

Section: Methanogenic Performancesupporting

confidence: 87%

Temperature Effects on Methanogenesis and Sulfidogenesis during Anaerobic Digestion of Sulfur-Rich Macroalgal Biomass in Sequencing Batch Reactors

2019

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Methanogenesis and sulfidogenesis, the major microbial reduction reactions occurring in the anaerobic digestion (AD) process, compete for common substrates. Therefore, the balance between methanogenic and sulfidogenic activities is important for efficient biogas production. In this study, changes in methanogenic and sulfidogenic performances in response to changes in organic loading rate (OLR) were examined in two digesters treating sulfur-rich macroalgal waste under mesophilic and thermophilic conditions, respectively. Both methanogenesis and sulfidogenesis were largely suppressed under thermophilic relative to mesophilic conditions, regardless of OLR. However, the suppressive effect was even more significant for sulfidogenesis, which may suggest an option for H 2 S control. The reactor microbial communities developed totally differently according to reactor temperature, with the abundance of both methanogens and sulfate-reducing bacteria being significantly higher under mesophilic conditions. In both reactors, sulfidogenic activity increased with increasing OLR. The findings of this study help to understand how temperature affects sulfidogenesis and methanogenesis during AD.

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Section: Methanogenic Performancesupporting

confidence: 87%

Temperature Effects on Methanogenesis and Sulfidogenesis during Anaerobic Digestion of Sulfur-Rich Macroalgal Biomass in Sequencing Batch Reactors

2019

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“…However, these practices can affect soil porosity, generate bad odours, and contaminate water sources due to the presence of fats and organic compounds in the SPM. e general composition of the SPM demonstrates its potential for the production of renewable energy through anaerobic digestion (AD) [5,6]; however, being formed by a lignocellulosic structure, avoids the solubilisation of nutrients for absorption by microorganisms [7] and affects its degradability, being the hydrolysis the limiting stage [8]. To solve this problem, physical, mechanical, and chemical pretreatments and combinations of these have been carried out; however, they are costly alternatives that require specialized equipment and qualified personnel or can generate toxic by-products [9].…”

Section: Introductionmentioning

confidence: 99%

Anaerobic Codigestion of Sugarcane Press Mud with Food Waste: Effects on Hydrolysis Stage, Methane Yield, and Synergistic Effects

Cárdenas-Cleves

Marmolejo-Rebellón

Torres–Lozada

2018

International Journal of Chemical Engineering

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Sugarcane press mud (SPM) has a high potential to produce renewable energy through anaerobic digestion (AD); however, hydrolysis is the limiting stage of the process due to the presence of slowly biodegradable compounds. An alternative that can improve this deficiency is anaerobic codigestion (AcoD). In this investigation, the monodigestion of SPM and its AcoD with food waste (FW) were evaluated through the biochemical methane potential (BMP) test, and kinetic parameters were analyzed through the analysis of the kinetic models of first order and modified Gompertz. This study showed that the AcoD of SPM with FW improved the hydrolysis stage, increased methane (CH4) yield, improved the stability of the process, and presented synergistic effects. As regards the hydrolysis stage, the hydrolysis constant was increased, and the lag phase was reduced. The monodigestion of SPM (SPM : FW 100 : 0) showed an increase of 9% with the addition of external nutrients solution, while that of AcoD in the SPM : FW 80 : 20 ratio showed the highest CH4 yield, with increments of 12 and 22% in comparison with the monodigestion of SPM under WN and NN conditions, respectively. It is even possible to add up to 40% of FW (SPM : FW 60 : 40) and achieve an increase of 5% compared to the monodigestion of SPM under the NN condition. The synergistic effects obtained in this study showed that the incorporation of FW, in the substrates ratios evaluated, would improve the AD of the SPM without addition of external nutrients solution, which represents economic and environmental benefits of implementing this alternative at full scale.

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“…Temperatures chosen for aging were 38ºC which is believed to be subsurface temperature, 65ºC is the temperature between surface temperature and bottom hole temperature and 93ºC is the maximum permissible temperatures for water based mud to perform rheological test so as to avoid degradation of polymers [16,17]. Temperature of 49ºC was taken as standard temperature to measure rheological properties of the mud [18] after aging.…”

Section: Aging Processmentioning

confidence: 99%

Improving the Rheological Properties of Water Based Mud with Moringa oleifera Leaves

Biwott

Akaranta

Kiprop

et al. 2019

CSIJ

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This paper aimed at improving the water-based drilling mud using Moringa oleifera (M. Oleifera) plant leaves. The rheological properties (plastic viscosity (PV), yield point (YP), and gel strength) of the mud were measured using standard procedures. The mud weight was not affected by M. oleifera concentration (10.03-10.63 pounds per gallon (ppg)). pH of the formulated mud decreased by 28% with increasing concentration of the M. oleifera leaves. The highest PV (33cP) was recorded by mud with 1% M. oleifera leaves at 50ºC while the least value (22cP) was given by control mud at 70ºC temperature. Highest YP (57 1b/100ft 2 ) was recorded by mud sample with 4% concentration of M. oleifera leaves while 1% gave the lowest YP value of 91b/100ft2 at 30ºC and Original Research Article

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Anaerobic co-digestion of sugarcane press mud with vinasse on methane yield

Cited by 83 publications

References 20 publications

Temperature Effects on Methanogenesis and Sulfidogenesis during Anaerobic Digestion of Sulfur-Rich Macroalgal Biomass in Sequencing Batch Reactors

Temperature Effects on Methanogenesis and Sulfidogenesis during Anaerobic Digestion of Sulfur-Rich Macroalgal Biomass in Sequencing Batch Reactors

Anaerobic Codigestion of Sugarcane Press Mud with Food Waste: Effects on Hydrolysis Stage, Methane Yield, and Synergistic Effects

Improving the Rheological Properties of Water Based Mud with Moringa oleifera Leaves

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