Anaerobic digestion of crude glycerol from biodiesel manufacturing using a large-scale pilot plant: Methane production and application of digested sludge as fertilizer

Baba, Yasunori; Tada, Chika; Watanabe, Ryoya; Fukuda, Yasuhiro; Chida, Nobuyoshi; Nakai, Yutaka

doi:10.1016/j.biortech.2013.04.020

Cited by 62 publications

(37 citation statements)

References 28 publications

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“…The work carried out by Baba et al (2013) also proposes the production of biogas from large-scale anaerobic digestion. However, the authors highlight an important problem, the fate of the sludge generated after the glycerol biodigestion.…”

Section: Production Of Biomethanolmentioning

confidence: 99%

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Biomethanol Production from the Glycerol Byproduct of the Biodiesel Production Process, a Proposition

Almeida¹,

Andrade²,

Santos³

2018

dtetr

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Abstract. Currently, studies have been carried out with the objective of developing alternative fuels, which are sustainable and renewable. The proposal of this work is to present methodologies present in the literature that provide the conversion of glycerol to biogas and, from biogas to the production of biomethanol. Thus, to propose the study of a process plant, based on simulations and data obtained experimentally, to carry out the conversion of glycerol into biogas and convert the biogas into biomethanol. With the purpose of producing methanol from renewable sources. This work also proposes, the mass and energy integration in the biodiesel production plant, once, that the biomethanol produced can be used in the process itself.

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Section: Production Of Biomethanolmentioning

confidence: 99%

“…However, the authors highlight an important problem, the fate of the sludge generated after the glycerol biodigestion. The authors present as solution the use of this sludge as biofertilizer for pasture [17].…”

Section: Production Of Biomethanolmentioning

confidence: 99%

Biomethanol Production from the Glycerol Byproduct of the Biodiesel Production Process, a Proposition

Almeida¹,

Andrade²,

Santos³

2018

dtetr

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“…Approximately 1 kg of glycerol is generated per 10 kg of biodiesel produced. Various methods have been used for the disposal or utilization of crude glycerol (CG), including direct combustion [2,3], fertilizer [4,5], animal feed [6,7], or anaerobic digestion feedstock [5,8], and thermo-chemical or biological conversion to value added products [9][10][11][12][13][14]. However, with the rapid expansion of the biodiesel industry, the market is now flooded with excessive CG and any increase in biodiesel production rates will significantly raise the quantity of glycerol above the current market demands and decrease its economic value.…”

Section: Introductionmentioning

confidence: 99%

Preparation of sludge-derived KOH-activated carbon for crude glycerol purification

Hunsom

Autthanit

2015

J Mater Cycles Waste Manag

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Activated carbon (AC) was prepared from wastewater treatment sludge by KOH activation and then used for the adsorptive purification of crude glycerol (CG). The effect of different KOH: char (w/w) ratios (1-6), KOH soaking times (5-25 h), and activation temperatures (500-900°C) on the surface properties of the obtained sludge-derived ACs and their adsorption capacity for impurities in H 3 PO 4 pretreated CG was explored. The preparation conditions affected the textural properties and surface chemistry of the sludge-derived AC and its efficiency in the adsorptive purification of CG. Oxygen-containing surface functional groups, particularly carbonyl groups, as well as the textural properties, played a more important role in the adsorptive purification of CG. Among the sludge-derived ACs, the one impregnated at a KOH: char (w/w) ratio of 5.0 for 25 h and then activated at 800°C exhibited the most suitable surface properties for the purification of pretreated CG, attaining a 93.0 % (w/w) glycerol level at an AC dose of 67 g/L for 2 h with agitation at 250 rpm. The AC adsorption of impurities from the pretreated CG followed the Langmuir isotherm. However, the reusability of the used AC by hexane or diethyl ether extraction was not suitable.

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“…Studies observing plant response to biogas slurry, e.g., [28,[44][45][46][47] or (composted) biochar e.g., [33,[48][49][50][51][52][53][54][55], have often revealed positive results in terms of stimulated crop productivity. Furthermore, co-composting of source-separated human faeces has also been empirically studied, cf.…”

Section: Intersectional Resource Management For Subsistence Fertilizementioning

confidence: 99%

Recycling Improves Soil Fertility Management in Smallholdings in Tanzania

Krause

Rotter

2018

Agriculture

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Abstract:Residues from bioenergy and ecological sanitation (EcoSan) can be utilized to sustain soil fertility and productivity. With regard to certain cooking and sanitation technologies used in smallholder households (hh), we systematically analyzed how utilization of the respective potentials to recover residues for farming affects (i) soil nutrient balances, (ii) the potential for subsistence production of composts, and (iii) environmental emissions. On the example of an intercropping farming system in Karagwe, Tanzania, we studied specific farming practices including (1) current practices of using standard compost only; (2) a combination of using biogas slurry, urine, and standard compost; (3) a combination of using so-called "CaSa-compost" (containing biochar and sanitized human excreta, Project "Carbonization and Sanitation"), urine, and standard compost. The system analysis combines a soil nutrient balance (SNB) with material flow analysis (MFA). Currently, nitrogen (N) and phosphorus (P) are depleted by −54 ± 3 and −8 ± 1 kg·ha −1 ·year −1 , respectively. Our analysis shows, however, a clear potential to reduce depletion rates of N, and to reverse the SNB of P, to bring about a positive outcome. Composts and biogas slurry supply sufficient P to crops, while urine effectively supplements N. By using resources recovered from cooking and sanitation, sufficient compost for subsistence farming may be produced. Human excreta contribute especially to total N and total P in CaSa-compost, whilst biochar recovered from cooking with microgasifier stoves adds to total carbon (C) and total P. We conclude that the combined recycling of household residues from cooking and from sanitation, and CaSa-compost in particular, is especially suitable for sustainable soil management, as it mitigates existing P-deficiency and soil acidity, and also restores soil organic matter.

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Anaerobic digestion of crude glycerol from biodiesel manufacturing using a large-scale pilot plant: Methane production and application of digested sludge as fertilizer

Cited by 62 publications

References 28 publications

Biomethanol Production from the Glycerol Byproduct of the Biodiesel Production Process, a Proposition

Biomethanol Production from the Glycerol Byproduct of the Biodiesel Production Process, a Proposition

Preparation of sludge-derived KOH-activated carbon for crude glycerol purification

Recycling Improves Soil Fertility Management in Smallholdings in Tanzania

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