Polychlorinated biphenyl concentration changes in sewage sludge and organic municipal waste mixtures during composting and anaerobic digestion

Siebielska, Izabela; Sidełko, Robert

doi:10.1016/j.chemosphere.2014.12.051

Cited by 28 publications

(17 citation statements)

References 21 publications

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“…The investigations of Dą browska and Rosi nska (2012) shown that thermophilic digestion has a positive effect on degradation of PCBs: total concentration of seven PCBs was reduced by 47%. In turn Siebielska and Sidełko (2015) observed that anaerobic digestion is much more effective than composting in terms of degradadtion of PCBs. The chlorination level of PCB was limiting factor in the composting process, but did not affect the anaerobic digestion of sewage sludge.…”

Section: Other Organic Contaminantsmentioning

confidence: 99%

The presence of contaminations in sewage sludge – The current situation

Fijałkowski

Rorat

Grobelak

et al. 2017

Journal of Environmental Management

373

151

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Sewage sludge/biosolids are by-wastes of municipal and industrial wastewater treatment. As sources of nutrients (C, N, P) they are widely used in intensive farming where large supplementation of organic matter to maintain fertility and enhance crop yields is needed. However, according to the report of European Commission published in 2010, only 39% of produced sewage sludge is recycled into agriculture in the European Union. This situation occurs mainly due to the fact, that the sewage sludge may contain a dangerous volume of different contaminants. For over decades, a great deal of attention has been focused on total concentration of few heavy metals and pathogenic bacteria Salmonella and Escherichia coli. The Sewage Sludge Directive (86/278/EEC) regulates the allowable limits of Zn, Cu, Ni, Pb, Cd, Cr and Hg and pathogens and allows for recovery of sludge on land under defined sanitary and environmentally sound conditions. In this paper, a review on quality of sewage sludge based on the publications after 2010 has been presented. Nowadays there are several papers focusing on new serious threats to human health and ecosystem occurring in sewage sludge - both chemicals (such as toxic trace elements - Se, Ag, Ti; nanoparticles; polyaromatic hydrocarbons; polychlorinated biphenyl; perfluorinated surfactants, polycyclic musks, siloxanes, pesticides, phenols, sweeteners, personal care products, pharmaceuticals, benzotriazoles) and biological traits (Legionella, Yersinia, Escherichia coli O157:H7).

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Section: Other Organic Contaminantsmentioning

confidence: 99%

The presence of contaminations in sewage sludge – The current situation

Fijałkowski

Rorat

Grobelak

et al. 2017

Journal of Environmental Management

373

151

View full text Add to dashboard Cite

show abstract

“…In aerobic conditions mostly carbon dioxide and water are generated and in anaerobic decomposition -methane and water. Such decomposition is caused by microorganisms that activate themselves at specifi c temperature, humidity and in presence of nutrients (Janowska and Szymański 2009, Siebielska 2014, Siebielska and Sidełko 2015. Depending on oxygen conditions that occur in landfi ll, aerobic or anaerobic bacteria prevail (Kjeldsen et al 2002, Renou et al 2008.…”

Section: Introductionmentioning

confidence: 99%

Migration of pollutants in porous soil environment

Szymański¹,

Janowska²

2016

Archives of Environmental Protection

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Abstract:Landfi ll leachate makes a potential source of ground water pollution. Municipal waste landfi ll substratum can be used for removal of pollutants from leachate. Model research was performed with use of a sand bed and artifi cially prepared leachates. Effectiveness of fi ltration in a bed of specifi c thickness was assessed based on the total solids content. Result of the model research indicated that the mass of pollutants contained in leachate fi ltered by a layer of porous soil (m f ) depends on the mass of pollutants supplied (m d ). Determined regression functions indicate agreement with empirical values of variable m′ f . The determined regression functions allow for qualitative and quantitative assessment of infl uence of the analysed independent variables (m′ d , l, ω) on values of mass of pollutants fl owing from the medium sand layer. Results of this research can be used to forecast the level of pollution of soil and underground waters lying in the zone of potential impact of municipal waste landfi ll.

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“…W procesie fermentacji dodatkowo produkowany był biogaz, zawierający do 60% metanu. Przefermentowany osad ściekowy do badań pobierany był z bioreaktorów fermentacyjnych [16]. Frakcja organiczna odpadów komunalnych pochodziła z terenu zakładu unieszkodliwiania odpadów, przetwarzającego około 45 000 Mg odpadów rocznie.…”

Section: Proces Fermentacji Metanowejunclassified

“…Dodatkowo bioreaktor w dolnej części posiadał zawór do poboru fermentowanej mieszaniny w czasie trwania procesu. Biogaz do analizy pobierano z zaworu, umieszczonego w pokrywie bioreaktora [16].…”

Section: Proces Fermentacji Metanowejunclassified