Anaerobic co-digestion of glycerol and wastewater derived from biodiesel manufacturing

Siles, J.A.; Martı́n, M.A.; Chica, A.F.; Martı́n, A.

doi:10.1016/j.biortech.2010.03.042

Cited by 119 publications

(72 citation statements)

References 24 publications

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“…The evolution of pH in the reactor is shown in the Fig. 5, it decreases reaching a value of 6.5, These values are in line with those previously described by Martín et al (2010) and Siles et al (2009) but it was around neutrality because the optimal pH range for mesophilic anaerobic digestion is close to neutrality, varying for each type of bacteria between 6.5 and 7.5 (Martí, 2006). Figure 6 shows the variation of alkalinity during the process of mesophilic anaerobic digestion of organic household waste, the alkalinity is one of parameters which evaluate the stability in the effluents of reactor.…”

Section: Variation Of Alkalinity and Phsupporting

confidence: 90%

Evaluation the Anaerobic Digestion Performance of Organic Waste from a Landfill in Morocco

Ebich

Ramdan

Essamri

2017

American Journal of Environmental Sciences

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Organic household waste has a high organic content (69 g/kg), value of pH equal to 6,3 with 94% of moisture. Anaerobic digestion is one of the technologies for recycling and stabilization of organic waste, the process is carried out in 3L reactor at semi continuous and mesophelic conditions. During the anaerobic digestion of OHW, pH was around neutrality (between 6,5 and 8), a decrease of alkalinity was observed reaching a value of 900 mg CaCo 3 /L), total and volatile solid were accumulated at the end of the experiment. Result of biogas production indicates that a higher methane yield was obtained for the load 0,5 g VS/L, methanogenic potential for the anaerobic digestion of OHW was 0,15L STP /g VS.

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Section: Variation Of Alkalinity and Phsupporting

confidence: 90%

Evaluation the Anaerobic Digestion Performance of Organic Waste from a Landfill in Morocco

Ebich

Ramdan

Essamri

2017

American Journal of Environmental Sciences

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“…The extensive use of fossil fuels has generated environmental issues, such as global warming and atmospheric pollution (Siles et al 2010). The replacement of fossil fuels for renewable biofuels is a necessity.…”

Section: Introductionmentioning

confidence: 99%

Conversion of residues and by-products from the biodiesel industry into value-added products

Plácido

Capareda

2016

Bioresour. Bioprocess.

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Biodiesel, one of the most important sources of renewable energy, is produced in large quantities around the world; however, its production generates different kinds of residues and by-products which raise economic and environmental concerns. This review presents a compilation of the data on current state of transformation of residues and by-products of biodiesel industry into products that are suitable for bio-refining. The review has analyzed glycerol, biodiesel washing wastewaters, and solid residues. The technologies were described and the most significant experimental results and variables were summarized to allow researchers an easy access to this information.

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“…Recent studies on anaerobic co-digestion of glycerol and excreta from animal production have aimed to reduce the impact of excess crude glycerin and increase the potential of this process. This alternative seems to be very promising, since it allows the reduction of the hydraulic retention time (HTR) spent to achieve the same biogas production generated by using only wastes (Siles et al, 2009). …”

Section: Introductionmentioning

confidence: 99%

Co-digestion of swine excreta associated with increasing levels of crude glycerin

et al. 2016

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-The objective of this research was to evaluate the performance of anaerobic co-digestion of swine excreta associated with increasing doses of crude glycerin and different hydraulic retention times (HRT). A completely randomized design was adopted in a 3 × 4 factorial arrangement composed of three HRT (10, 17, and 24 days) and four crude glycerin doses (0, 5, 10, and 15 g/100 g of total solids [TS]), with four replications per treatment. The assessed parameters were: biogas production potential, reductions of volatile solids (VS), chemical oxygen demand (COD), and most probable number of total and thermotolerant coliforms. The biogas production per added VS presented quadratic effect at 17 and 24 days of HRT, with ideal doses of 5.5 and 5.9 g of crude glycerin/100 g TS, respectively. There was no difference among glycerin doses at 10-day HRT for VS reductions; however, at HRT of 17 and 24 days, there were differences, with greater reduction of 61.1% for 5 g of crude glycerin/100 g TS at 24-day HRT. The COD reduction values showed an effect among retention times, in which the 24-day HRT provided the best results. Reductions in coliforms were greater than 99%, with no difference among treatments. Addition of 5 to 6 g of crude glycerin/100 g TS with a 24-day HRT is more effective in biogas production and reduction of VS, COD, and coliforms from co-digestion of swine excreta.

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Anaerobic co-digestion of glycerol and wastewater derived from biodiesel manufacturing

Cited by 119 publications

References 24 publications

Evaluation the Anaerobic Digestion Performance of Organic Waste from a Landfill in Morocco

Evaluation the Anaerobic Digestion Performance of Organic Waste from a Landfill in Morocco

Conversion of residues and by-products from the biodiesel industry into value-added products

Co-digestion of swine excreta associated with increasing levels of crude glycerin

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