Thermophilic anaerobic co-digestion of sewage sludge with grease waste: Effect of long chain fatty acids in the methane yield and its dewatering properties

Silvestre, G.; Illa, Josep; Fernández, Belén; Blasi, August Bonmatí

doi:10.1016/j.apenergy.2013.11.075

Cited by 122 publications

(62 citation statements)

References 30 publications

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“…-for instance in molasses -is too high (Chen et al, 2008;Fang et al, 2011), and the C:N ratio is different from the optimum reported in literature (Parkin and Owen, 1986;Pilarska et al, 2014). Moreover, lipids concentration of FW is always higher than the limit concentration, which inhibits the process as well and limits biogas yield (Silvestre et al, 2014). These problems can be counteracted by co-fermenting food waste with other organic waste, such as sewage sludge (Silvestre et al, 2014), swine and dairy manure (Kavacik and Topaloglu, 2010), rice straw (Zhan-Jiang et al, 2014), rice husk , cattle slurry (Comino et al, 2012), kitchen wastewater (Tawik and El-Qelish, 2012).…”

Section: Introductionmentioning

confidence: 99%

“…Moreover, lipids concentration of FW is always higher than the limit concentration, which inhibits the process as well and limits biogas yield (Silvestre et al, 2014). These problems can be counteracted by co-fermenting food waste with other organic waste, such as sewage sludge (Silvestre et al, 2014), swine and dairy manure (Kavacik and Topaloglu, 2010), rice straw (Zhan-Jiang et al, 2014), rice husk , cattle slurry (Comino et al, 2012), kitchen wastewater (Tawik and El-Qelish, 2012). Their addition provides higher buffer capacity (reducing ammonia concentration), improves the content of nutrients, reduces high concentrations of K + , Na + (dilution with cow manure), and facilitates biodegradation of lipids, leading eventually to improved methane yields.…”

Section: Introductionmentioning

confidence: 99%

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Utilization of vegetable dumplings waste from industrial production by anaerobic digestion

Pilarska¹,

Pilarski²,

Ryniecki³

et al. 2017

International Agrophysics

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A b s t r a c t. This paper provides the analysis of results of biogas and methane yield for vegetable dumplings waste: dough with fat, vegetable waste, and sludge from the clarifier. Anaerobic digestion of food waste used in the experiments was stable after combining the substrates with a digested pulp composed of maize silage and liquid manure (as inoculum), at suitable ratios. The study was carried out in a laboratory scale using anaerobic batch reactors, at controlled (mesophilic) temperature and pH conditions. The authors present the chemical reactions accompanying biodegradation of the substrates and indicate the chemical compounds which may lead to acidification during the anaerobic digestion. An anaerobic digestion process carried out with the use of a dough-and-fat mixture provided the highest biogas and methane yields.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Utilization of vegetable dumplings waste from industrial production by anaerobic digestion

Pilarska¹,

Pilarski²,

Ryniecki³

et al. 2017

International Agrophysics

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show abstract

“…According to literature reports, the AD process is most typically applied to food waste from restaurants [6][7], either individually or after mixing it with other substrates. Moreover, experiments are carried out with food waste arising in the food processing industry such as sugar beet pulp [8], molasses [9], cheese whey [10], fat [11], coffee waste [12], fruit and vegetable waste [13], and dumpling waste [14]. Those with the use of waste arising in confectionery production are carried only very rarely, even though the material -which is usually highly concentrated and rich in carbohydrates -is a promising substrate for the production of biogas, including methane.…”

Section: Introductionmentioning

confidence: 99%

“…Sewage sludge is one more example of organic waste, used as a substrate for making biogas [7,8,[10][11][12][13][14][15][17][18][19][20]. Among biological methods, which include also aerobic digestion and composting, anaerobic digestion is perceived to be the most environmentally friendly and cost-effective method for neutralization and disposal of sewage sludge [1].…”

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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“…A inibição de processos anaeróbios depende do tipo de AGCL, da população microbiana, e da temperatura (SILVESTRE et al, 2014 …”

Section: Digestão Anaeróbiaunclassified

Efeito da adição de fibras de cana-de-açúcar pré-tratadas na produção de metano advinda da biodigestão anaeróbia de gorduras do leite

Bueno¹

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Anaerobic digestion is an alternative for treating waste with high concentrations of organic matter. Through anaerobic processes biogas production is possible, which represents environmentally friendly renewable energy source. High lipid concentrations, however, although having high methanogenic potential, may negatively interfere with the treatment systems causing microbial activity inhibition and, consequently, depleting the production of methane. This project evaluated the effect of addition of cellulosic fibers in the anaerobic digestion process of high concentrations of fatty residues from dairy effluents. Therefore, sugarcane bagasse fibers were used in natura and pretreated by the following methods: organosolve, hydrothermal, steam explosion and dilute acid. The use of the fibers had the objective to control the inhibition caused by the products of the hydrolysis of lipids through adsorption and thus decrease the concentrations of such compounds in the medium. We also had the hypothesis that the cellulosic fibers could act as cosubstrate in the anaerobic digestion process. Initially, anaerobic biodegradability tests were set with increasing concentrations of fatty residue, which resulted in relation entity substrate and microorganism of 0.057; 0.12; 0.24; 0.37 and 0.57 g COD / gSTV. The assay in which severe inhibition was verified (0.37 g COD/gSTV) was repeated with addition of treated and untreated fibers. The sugarcane bagasse showed potential as adsorbent because the methanogenic yields in the presence of the fibers were higher than the inhibited condition, without addition of that material.The addition of pretreated fibers by organosolv method resulted in higher methane production.

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Thermophilic anaerobic co-digestion of sewage sludge with grease waste: Effect of long chain fatty acids in the methane yield and its dewatering properties

Cited by 122 publications

References 30 publications

Utilization of vegetable dumplings waste from industrial production by anaerobic digestion

Utilization of vegetable dumplings waste from industrial production by anaerobic digestion

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

Efeito da adição de fibras de cana-de-açúcar pré-tratadas na produção de metano advinda da biodigestão anaeróbia de gorduras do leite

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