Acidogenic Fermentation and Anaerobic Co-digestion of Mechanically Sorted OFMSW and Polyethylene Glycol

Dosta, J.; Martin-Ryals, Ana; Garrigó, M.; Ortiz-Roca, V.; Fernández, I. González; Torres-Castillo, R.; Mata‐Alvarez, J.

doi:10.1007/s12649-018-0294-x

Cited by 6 publications

(3 citation statements)

References 20 publications

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“…In the start-up of semi-continuous acidogenic fermenters treating OFMSW, the inoculum used was obtained from a lab-scale acidogenic fermenter treating residual organic matter (ROM) (Dosta et al 2018). The effluent of the continuous stirred-tank reactor treating OFMSW at pH 6 was used as inoculum to start up the lab-scale fermenters treating FW.…”

Section: Methodsmentioning

confidence: 99%

“…Two jacketed lab-scale reactors with an effective working volume of 4.5 L and mechanically stirred (using IKA-Werker, RW 16 basic functioning at approximately 170 rpm) were used as fermentation reactors at mesophilic conditions working with source-sorted OFMSW and FW. These fermenters were initially operated to test the influence of pH in the acidogenic fermentation process of OFMSW at an HRT of 3.5 days (Dosta et al 2018) working at (i) acidic pH near 6 (namely, 5.63–6.34) and (ii) alkaline pH near 10 (namely, 9.82–10.01). In fermenter working with OFMSW under acidic conditions, no external chemical addition was needed for pH control due to the buffer capacity of the collected OFMSW.…”

Section: Methodsmentioning

confidence: 99%

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Volatile fatty acid production from mesophilic acidogenic fermentation of organic fraction of municipal solid waste and food waste under acidic and alkaline pH

Cheah

Vidal-Antich

Dosta

et al. 2019

Environ Sci Pollut Res

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116

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This study is focused on the effects of pH on the production of volatile fatty acids (VFAs) and their distribution through the acidogenic fermentation of source-sorted organic fraction of municipal solid waste (OFMSW) from a mechanical-biological treatment (MBT) plant, and food waste (FW) from a university canteen. In semi-continuous lab-scale digesters using OFMSW at a hydraulic retention time (HRT) of 3.5 days under acidic conditions (pH 6.0), the VFA concentration in the effluent increased to 9.8–11.5 g L−1 (VS content of the feedstock between 4.2 and 5.2% w/w), while its individual VFA profiling was similar to the influent which was already pre-fermented (namely, C2 35–41%, C3 18–22%, C4 17–21%, and C5 9–12%). When working with the same conditions but using FW as feedstock, an effluent with a VFA concentration up to 11.5 g VFA L−1 (FW with a VS content of 5.5% w/w) and a stable distribution of C2 and C4 acids (up to 60.3% and 12.9%, respectively) but with very low quantities of C3 and C5 acids (lower than 1.8 and 2.7%, respectively) was obtained. Anaerobic batch tests using FW revealed that alkaline pH near 9 could lead to higher VFA production with high acetic acid content when compared to pH 6. In the semi-continuous fermenters working at alkaline conditions (pH 9.5–10) using OFMSW and FW, an enhanced solubilization of organic matter was registered with respect to the fermenters working under acidic conditions. This fact was not reflected in a higher VFA production when using OFMSW as feedstock, probably due to free ammonia inhibition, since OFMSW was mixed in the MBT plant with supernatant from anaerobic digestion of this biowaste. However, when using FW, alkaline conditions lead to an enhanced VFA production with respect to the reactor working under acidic conditions, being acetic acid the predominant product, which represented up to 91% of the VFA spectrum obtained.Electronic supplementary materialThe online version of this article (10.1007/s11356-019-05394-6) contains supplementary material, which is available to authorized users.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Volatile fatty acid production from mesophilic acidogenic fermentation of organic fraction of municipal solid waste and food waste under acidic and alkaline pH

Cheah

Vidal-Antich

Dosta

et al. 2019

Environ Sci Pollut Res

Self Cite

116

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“…The SRT parameter also affects AD performance (Dosta et al, 2018). The microorganisms are partially taken away every time the sludge is removed.…”

Section: Solid Retention Timementioning

confidence: 99%

Recent Advance in Anaerobic Co-digestion Technology: A Review

Rajaonison¹,

Rabesahala²,

Rakotondramiarana³

2020

MAS

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Due to their polluting characteristics, fossil fuels presently tend to be replaced by renewable energy resources. Anaerobic digestion is a recent technology for producing biofuels. As a biochemical method to produce biogas, it is more environmentally friendly than other processes and is almost non-polluting. The anaerobic co-digestion is an upgrade of the mono-digestion since some limitations of the single-substrate degradation were solved by digesting two or more substrates. The present review gives an overview of the progress made in the anaerobic co-digestion technology. Appearing as a complex technology, lots of factors can affect its operation. Those factors include the choice and the composition of the substrates, the ratio between the substrates and the inoculum, the pretreatment, the environmental conditions, the operational parameters, and the post-treatment at the end of the process. Analytical and empirical tools for the assessment of the whole system in terms of biodegradability and synergy of the substrates, the efficiency of the process, and the identification of the operation inhibitors are also presented in this paper.

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A Comprehensive Comparison of Methane and Bio-Based Volatile Fatty Acids Production from Urban and Agro-Industrial Sources

Cerdán

Tejido-Núñez

Aymerich

et al. 2020

Waste Biomass Valor

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Acidogenic Fermentation and Anaerobic Co-digestion of Mechanically Sorted OFMSW and Polyethylene Glycol

Cited by 6 publications

References 20 publications

Volatile fatty acid production from mesophilic acidogenic fermentation of organic fraction of municipal solid waste and food waste under acidic and alkaline pH

Volatile fatty acid production from mesophilic acidogenic fermentation of organic fraction of municipal solid waste and food waste under acidic and alkaline pH

Recent Advance in Anaerobic Co-digestion Technology: A Review

A Comprehensive Comparison of Methane and Bio-Based Volatile Fatty Acids Production from Urban and Agro-Industrial Sources

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