Removal of DEHP in composting and aeration of sewage sludge

Marttinen, Sanna; Hänninen, Kari; Rintala, Jukka

doi:10.1016/s0045-6535(03)00661-1

Cited by 58 publications

(29 citation statements)

References 14 publications

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“…Ammonia is known to cause a strong phytotoxic effect (De la Torre et al 2000;Tiquia et al 1996) that can explain the phytotoxic differences of the aqueous extracts between the composted and the fresh sludge. Moreover, during the decomposition process, waste toxicity may be reduced since non-persistent organic pollutants like DEHP and others can be degraded (Bagó et al 2005;Déportes et al 1995;Marttinen et al 2004). In fact, toxicity reduction in the composted sludge can be attributed to a decrease of DEHP and NPE during composting, as is suggested by the concentration of these organic pollutants in the methanol extract (Table 3), and by the negative correlation found in the same extract between the organic pollutants and the GI.…”

Section: Phytotoxicity and Extract Compositionmentioning

confidence: 99%

“…Liquid residues and slurry can be treated by aerobic or anaerobic digestion, as is the case of many sewage sludges, followed by some posttreatments, such as thermal drying or composting. In this sense, sludge post-treatments are valuable options for the reduction of the unacceptable accumulation of pollutants, bad odours, and disease risk due to pathogenic microbes (Marttinen et al 2004). One of the most common posttreatment options for sewage sludge is their composting with plant debris (Graja et al 2005;Neyens and Baeyens 2003).…”

Section: Introductionmentioning

confidence: 99%

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Phytotoxic effects of sewage sludge extracts on the germination of three plant species

et al. 2008

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In order to evaluate the ability of three types of extracts to explain the ecotoxicological risk of treated municipal sewage sludges, the OECD 208A germination test was applied using three plants (Lolium perenne L., Brassica rapa L., and Trifolium pratense L.). Three equivalent batches of sludge, remained as dewatered sludge, composted with plant remains and thermally dried, from an anaerobic waste water treatment plant were separated. Samples from these three batches were extracted in water, methanol, and dichloromethane. Plant bioassays were performed and the Germination Index (GI) for the three plants was evaluated once after a period of 10 days. Germination in extracts was always lower than the respective controls. The germination in composted sludge (GI 40.9-86.2) was higher than the dewatered (GI 2.9-45.8), or thermally dried sludges (GI 24.6-64.4). A comparison of the germination between types of extracts showed differences for dewatered sludge with the three plants, where the water and methanol extracts had significantly lower germination than the dichloromethane extract. A higher half maximal effective concentration (EC50) in composted extracts was established, mainly in the water extract (EC50 431-490 g kg(-1)). On the contrary, the germination was strongly inhibited in the water extract of the dewatered sludge (EC50 14 g kg(-1)). The germination was positively correlated with the degree of organic matter stability of the parent sludge, and an inverse correlation was detected for total nitrogen, hydrolysable nitrogen and ammonium content. It is concluded that the phytotoxic effect of the water extract is more closely related to hydrophilic substances rather than lipophilic ones, and care must be taken with dewatered sludge application, especially with their aqueous eluates. Results obtained in this work show the suitability of the use of sludge extracts in ecotoxic assays and emphasize the relevance of sewage sludge stabilization by post-treatment processes.

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Section: Phytotoxicity and Extract Compositionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Phytotoxic effects of sewage sludge extracts on the germination of three plant species

et al. 2008

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“…PAEs are widely used industrial chemicals [1,16,17]. They serve as important additives to impart flexibility in polyvinyl chloride (PVC) resins.…”

Section: Characteristics Of Paesmentioning

confidence: 99%

Biodegradation of Emerging Organic Contaminants by Composting

Kumar

2012

The Handbook of Environmental Chemistry

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Sewage sludge is a rich source of organic matter and nutrients, which can be utilized for soil improvement and plant growth. The utilization of sewage sludge for plant growth and conversion of sludge into renewable resource is often restricted by the presence of hazardous organic matter (HOM) including di-(2-ethylhexyl) phthalate (DEHP) and antibiotics. HOM enters the sewerage system through various domestic and industrial sources; they are mostly hydrophobic in nature and recalcitrant to microorganisms. HOM has the tendency to accumulate in the sludge during biological wastewater treatment processes and, subsequently, raise the difficulty of further sludge treatment and/or disposal. The application of sewage sludge containing HOM can create risk to ecosystems. The stability and biodegradation of DEHP and antibiotics during composting are discussed in this chapter. Finally, the recent advances in the bioremoval of these HOM are briefly summarized.

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“…Composting is one of the most efficient waste treatment technologies to handling waste and enables to recycling of organic matter, reduce the amount of biodegradable organic matters (Epstein, 1997;Stamatelatou et al, 2011;Amir et al, 2005;Ramirez et al, 2008;Marttinen et al, 2004;Oleszczuk, 2007;Poulsen and Berster 2010). Sandy soils, that are poor in mineral and organic colloids, have low fertility as determined by low water retention and a shortage of macro-and micronutrients.…”

Section: Introductionmentioning

confidence: 99%

Effect of Sewage Sludge Compost Treatment on Crop Yield

Tomócsik¹,

Makádi²,

Orosz³

et al. 2016

AGR

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Due to the increasing number of sewage cleaning plants, the amount of sewage sludge also increases. We have to solve the environmentally sound disposal of the sludge. Results of many experiments show that sewage sludge and sewage sludge compost can be recycled as nutrient suppling material in agriculture. Municipal sewage sludge compost could cause the occurrence and accumulation of toxic elements in the soil. A small-plot experiment with sewage sludge compost was established in the spring of 2003. The applied compost contains 40% sewage sludge, 25% straw, 30% rhyolite, 5% betonite. The small-plot experiment was retreated in the autumn of 2006, 2009, 2012and 2015. There are 4 treatments in five blocks, where the sewage sludge compost was applied at a rate of 0, 9, 18 and 27 tha -1 and then ploughed into the soil. Triticale as autumn cereal, maize and green pea as spring crops were sown in crop rotation every year. Plant samples were collected before harvesting. In this paper the results of crop yield between 2010-2012 are presented. Crops of triticale and maize were higher in the treated plots than in control one in 2010 and 2011. Treatment effect was not observed on green pea yield.The results show that the effect of applied compost doses depends on plant species and time. Our aim is to maintain this unique long-term experiment for studying the composted sewage sludge as a nutrient and organic matter source, applying it similarly to the farmyard manure.

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Removal of DEHP in composting and aeration of sewage sludge

Cited by 58 publications

References 14 publications

Phytotoxic effects of sewage sludge extracts on the germination of three plant species

Phytotoxic effects of sewage sludge extracts on the germination of three plant species

Biodegradation of Emerging Organic Contaminants by Composting

Effect of Sewage Sludge Compost Treatment on Crop Yield

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