Kinetic investigations of methane co-fermentation of sewage sludge and organic fraction of municipal solid wastes

Sosnowski, Piotr; Klepacz-Smółka, Anna; Kaczorek, Katarzyna; Ledakowicz, S.

doi:10.1016/j.biortech.2007.10.019

Cited by 131 publications

(48 citation statements)

References 13 publications

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“…Hence, the anaerobic codigestion of a combination of sewage sludge and other organic waste, including from confectionery production, may be of benefi t to both partners. It is a feasible option which, on the one hand, enables biogas production with high yields by improving the content of carbon and the balance of mineral components and, on the other, helps dilute toxic substances and intensifi es the degree of substrate digestion, but also provides a stable process [23]. It is worth adding that the volume of sewage sludge per annum can be tens of tons per year, depending on the infrastructure of the given waste treatment plant and on applicable environmental laws.…”

Section: Introductionmentioning

confidence: 99%

Anaerobic Co-Digestion of Waste Wafers from Confectionery Production with Sewage Sludge

Pilarska

2018

Pol. J. Environ. Stud.

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Food waste (FW) is generated in high volumes and is a serious threat to the environment if utilized improperly or left without control. Conventional methods of FW disposal include combustion, landfi lling, aerobic composting, partial recycling, and other ones. Anaerobic digestion (AD) is the most environmentally friendly of all the methods as it is benefi cial to the populace, and food waste is a suitable material for biogas production.Confectionery waste has rarely been utilized by anaerobic digestion (AD) so far. In this paper, the use of waste wafers (WF) in co-digestion with sewage sludge (SS) is proposed for the fi rst time. Annual volumes of production of WW and SS are expressed in hundreds and thousands of tons, respectively. The materials are generated in high amounts and on an ongoing basis, which is a very important factor regarding potential biogas plant investment projects. The objective of this paper was to analyze the AD process of the test substrates in terms of process stability and biogas capacity. The studies have shown that both the waste wafers as the individual material and with sewage sludge (as the co-substrate) are suitable feedstocks for biogas production. The experiments were carried out for the individual material and for a system with a cosubstrate in the form of raw sewage sludge (SS). In both cases, a digested sewage sludge was used as the inoculum. The studies were performed in a laboratory scale using anaerobic batch reactors under controlled (mesophilic) temperature and pH conditions. The highest yields of biogas and methane were obtained for waste wafers (980. ), than for the wafers (WF). The differences in biogas production for the samples were primarily connected with the substrates' composition, including with the content of readily degradable organic compounds and C/N ratio. The combination of waste wafers with raw sewage sludge has appeared to be benefi cial, as evidenced by the results of microbiological and biochemical analyses. The sample WF_SS was

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Section: Introductionmentioning

confidence: 99%

Anaerobic Co-Digestion of Waste Wafers from Confectionery Production with Sewage Sludge

Pilarska

2018

Pol. J. Environ. Stud.

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“…The proposed model was based on the stages described in paper by P. Sosnowski et al, [9]. First stage, hydrolytic bacteria hydrolyzed the organic compounds into a simple soluble compounds and then into volatile fatty acids by acid-forming bacteria.…”

Section: Kinetics Of Anaerobic Digestionmentioning

confidence: 99%

“…The objective of the study reported here is to introduce simulations of anaerobic digestion of fruit and vegetable waste, and to determine some unknown parameters from the proposed mathematical models [14]. The simplifying model proposed by P. Sosnowski et al, [9] was applied to this study, in order to obtain a mathematical model simulating the exact conditions.…”

Section: Introductionmentioning

confidence: 99%

Numerical Study of Anaerobic Digestion Processes and Biogas Generation from Fruit and Vegetable Waste

Wardhani¹,

Watanabe²

2017

ujar

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Batch experiments with fruit and vegetable waste and sludge from biogas plant as the feedstock were conducted in this study. Mathematical models are introduced here to explain the anaerobic processes, and some unknown parameters were determined by solving inverse problems numerically. Numerical results were compared with the experimental outcomes. We conclude that the results only show for situation where there is no inhibition by intermediate compounds such as volatile fatty acids.

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“…The total SCMAs content is often determined by titration of wastewater distillates [3][4][5] or often original samples. High detection limits (> 36 mg dm -3 ) and the fact that each acid can have different effect on treatment processes and on water quality deterioration have been the reasons to develop analytical methods of individual acids determination [6].…”

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confidence: 99%

Distillation Cleanup Preceded GC Determination of Short-Chain Monocarboxylic Acids in Aqueous and Solid Samples of Wastewater Origin

Banel

Jakimska

Wasielewska

et al. 2012

Ecological Chemistry and Engineering S

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Short-chain monocarboxylic acids (SCMAs) (C2-C5) formed in the process of aerobic biodegradation of larger organic molecules should often be monitored to optimize wastewater biological treatment and study the processes of converting organic waste matter into methane, etc. Gas chromatography (GC) seems a method of choice for such a task. Majority of samples require clean up before they can be injected into GC system. In this work a special refluxing apparatus is applied to concentrate and clean up the troublesome environment samples before injection into GC. To optimize separation of SCMAs in aqueous sample a special arrangement of two capillary columns, of very different polarity was used. The operational parameters of sample preparation were optimized and enrichment factors determined. The procedure developed was applied to determine SCMAs in troublesome aqueous and solid samples of wastewater treatment origin.

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Kinetic investigations of methane co-fermentation of sewage sludge and organic fraction of municipal solid wastes

Cited by 131 publications

References 13 publications

Anaerobic Co-Digestion of Waste Wafers from Confectionery Production with Sewage Sludge

Anaerobic Co-Digestion of Waste Wafers from Confectionery Production with Sewage Sludge

Numerical Study of Anaerobic Digestion Processes and Biogas Generation from Fruit and Vegetable Waste

Distillation Cleanup Preceded GC Determination of Short-Chain Monocarboxylic Acids in Aqueous and Solid Samples of Wastewater Origin

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