Towards optimization of the total solid content in high-solid (dry) municipal solid waste digestion

Benbelkacem, Hassen; Bollon, Julien; Bayard, Rémy; Escudié, Renaud; Buffière, Pierre

doi:10.1016/j.cej.2015.03.048

Cited by 49 publications

(21 citation statements)

References 24 publications

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“…Additionally, substrate-toinoculum (S/I) ratios of 0.4-0.6 (TS basis) were shown to minimize treatment costs (Di Maria et al, 2012). Benbelkacem et al (2015) evaluated the effect of TS content on a continuous SS-AD of MSW employing an initial S/I ratio of 0.8 (w/w), corresponding to 1.7-3.9 based on TS.…”

Section: Introductionmentioning

confidence: 99%

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Sequential batch thermophilic solid-state anaerobic digestion of lignocellulosic biomass via recirculating digestate as inoculum – Part I: Reactor performance

Lin

2017

Bioresource Technology

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Section: Introductionmentioning

confidence: 99%

“…Results showed that the highest volumetric productivity was achieved with about 22% TS for the materials in the reactor (Benbelkacem et al, 2015). The need to treat lignocellulosic biomass has raised interests in SS-AD under thermophilic condition.…”

Section: Introductionmentioning

confidence: 99%

Sequential batch thermophilic solid-state anaerobic digestion of lignocellulosic biomass via recirculating digestate as inoculum – Part I: Reactor performance

Lin

2017

Bioresource Technology

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“…It was reported that in commercial SS-AD digesters, about 50%-70% (wet based)of the finished solid materials (digestate) need to be recycled as inoculum, significantly reducing digester volume for feedstocks (Karthikeyan and Visvanathan, 2013). A recent lab scale studyon continuous SS-AD useda digestate recycling ratio (by fresh weight) of around 55%, and found that aTS content of about 26% and above would cause volatile fatty acid (VFA) accumulation anda pH drop (Benbelkacem et al, 2015). However, currently very limited information can be found for the optimal substrate to inoculum (S/I) ratio and the operating TS contentusing recycled digestate as inoculum.…”

Section: Introductionmentioning

confidence: 99%

Comparison of digestate from solid anaerobic digesters and dewatered effluent from liquid anaerobic digesters as inocula for solid state anaerobic digestion of yard trimmings

Wang

Lin

et al. 2016

Bioresource Technology

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To select a proper inoculum for the solid state anaerobic digestion (SS-AD) of yard trimmings, digestate from solid anaerobic digesters and dewatered effluent from liquid anaerobic digesters were compared at substrate-to-inoculum (S/I) ratios from 0.2 to 2 (dry basis), and total solids (TS) contents from 20% to 35%. The highest methane yield of around 244L/kg VSfeed was obtained at an S/I ratio of 0.2 and TS content of 20% for both types of inoculum. The highest volumetric methane productivity was obtained with dewatered effluent at an S/I ratio of 0.6 and TS content of 24%. The two types of inoculum were found comparable regarding methane yields and volumetric methane productivities at each S/I ratio, while using dewatered effluent as inoculum reduced the startup time. An S/I ratio of 1 was determined to be a critical level and should be set as the upper limit for mesophilic SS-AD of yard trimmings.

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“…In the case of pH decline, the reactor operates at batch mode until pH recovered then continuous feeding regime start again. The stirring process occurs by biogas reinjection to the reactor with high pressure of 5 bar at the bottom of the reactor [24,25] Data collected from real installed reactors of each type have been displayed in Fig. 5 [22,23], which presented the relation between the annual biogas productions versus the capacity of the reactor.…”

Section: Tablementioning

confidence: 99%

Comparative analysis of common full scale reactors for dry anaerobic digestion process

2019

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Organic solid wastes are produced with large amount wherever there are human activities. However, improper treated organic wastes made them as sources of diseases. On the other hand, these fractions contain nutrients and energy, so they have also valuable resources. As a result, exploring their potential as an energy source can be accomplish via anaerobic digestion process, in which, organics converted into hydrogen, methane and/or ethanol. Therefore, this manuscript introduces an overview of the common applied types of reactor that can handle these types of wastes in their solid state and recover them in term of biogas, as well as, stabilize the produced digestate to bio-fertilizers by compositing approach. A comparison also listed to demonstrate the optimum operational conditions and expected amount of biogas from each type.

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Towards optimization of the total solid content in high-solid (dry) municipal solid waste digestion

Cited by 49 publications

References 24 publications

Sequential batch thermophilic solid-state anaerobic digestion of lignocellulosic biomass via recirculating digestate as inoculum – Part I: Reactor performance

Sequential batch thermophilic solid-state anaerobic digestion of lignocellulosic biomass via recirculating digestate as inoculum – Part I: Reactor performance

Comparison of digestate from solid anaerobic digesters and dewatered effluent from liquid anaerobic digesters as inocula for solid state anaerobic digestion of yard trimmings

Comparative analysis of common full scale reactors for dry anaerobic digestion process

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