Fate of polycyclic aromatic hydrocarbons during composting of lagooning sewage sludge

Amir, Soumia; Hafidi, Mohamed; Merlina, Georges; Hamdi, Hassan; Revel, Jean-Claude

doi:10.1016/j.chemosphere.2004.09.039

Cited by 90 publications

(61 citation statements)

References 25 publications

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“…Some studies could even show degradation of PAH sorbed to the solid compost matrix (Marchal et al 2013). According to the literature about the compost process, PAH sorption with limited degradation was mostly detected during the stabilization phase of composting (Amir et al 2005;Wu et al 2013), whereas the highest pyrene degradation was detected with mature compost (Haderlein et al 2006;Kästner and Mahro 1996;Marchal et al 2013) as used in the present study. The difference is presumably caused by changes in compost composition during maturation.…”

Section: Discussionmentioning

confidence: 60%

Degradation of 13C-labeled pyrene in soil-compost mixtures and fertilized soil

Adam

Miltner

Kästner

2015

Appl Microbiol Biotechnol

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Polycyclic aromatic hydrocarbons (PAH) are toxic pollutants widely distributed in the environment due to natural and anthropogenic processes. In order to mitigate tar oil contaminations with PAH, research on improving bioremediation approaches, which are sometimes inefficient, is needed. However, the knowledge on the fate of PAH-derived carbon and the microbial degraders in particular in compost-supplemented soils is still limited. Here we show the PAH carbon turnover mass balance in microcosms with soil-compost mixtures or in farmyard fertilized soil using [(13)C6]-pyrene as a model PAH. Complete pyrene degradation of 100 mg/kg of soil was observed in all supplemented microcosms within 3 to 5 months, and the residual (13)C was mainly found as carbon converted to microbial biomass. Long-term fertilization of soil with farmyard manure resulted in pyrene removal efficiency similar to compost addition, although with a much longer lag phase, higher mineralization, and lower carbon incorporation into the biomass. Organic amendments either as long-term manure fertilization or as compost amendment thus play a key role in increasing the PAH-degrading potential of the soil microbial community. Phospholipid fatty acid stable isotope probing (PLFA-SIP) was used to trace the carbon within the microbial population and the amount of biomass formed from pyrene degradation. The results demonstrate that complex microbial degrader consortia rather than the expected single key players are responsible for PAH degradation in organic-amended soil.

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Section: Discussionmentioning

confidence: 60%

Degradation of 13C-labeled pyrene in soil-compost mixtures and fertilized soil

Adam

Miltner

Kästner

2015

Appl Microbiol Biotechnol

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“…The differences observed in the behavior of individual PAHs compounds during the sludge composting could be related to various interactions of pollutants with compost matrix. The obvious reduction of PAHs with high molecular weight (N>4) could be explained by their strong adsorption to compost matrix such as ligno-cellulosic material and the resultant decrease of their extractability by solvent, probably due to their greater hydrophobicity compared to the PAHs with low molecular weight (N<4; Smith et al 2001;Amir et al 2005;Cai et al 2007b;Oleszczuk 2007).…”

Section: Loss Of Pahs During the Compostingmentioning

confidence: 98%

Effect of Composting on Polycyclic Aromatic Hydrocarbons Removal in Sewage Sludge

Wu²,

Liu³

et al. 2008

Water Air Soil Pollut

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Changes in the concentrations of 16 polycyclic aromatic hydrocarbons (PAHs) identified by the US Environmental Protection Agency as priority pollutants were investigated during the composting process of sewage sludge mixed with rapeseed marc (9:1, weight base). Results showed that total PAHs concentrations of the sludge sampled in different seasons had far exceeded the accepted Europe Union cut-off limits for land application. Phenanthrene, fluorene and dibenz(a, h) anthracene were dominant PAHs in the sludge, accounting for 62.8~69.6% of the total amount of the 16 PAHs. Composting appeared to be an effective method for the removal of PAHs in sewage sludge. After 50 days of composting, a significant reduction of concentration of the total PAHs was detected as compared with the initial concentration in composting material. The significant relationship between the biodegradation of organic matter and the losses of Σ16 PAHs during composting indicated that microbial degradation was the key process responsible for the efficient removal of PAHs from the sludge. Among all tested PAHs, fluorene was the most recalcitrant and became the primary residual PAH in the composted material. The lower removal rate of fluorene during composting was a limiting factor for the potential land application of the sludge. Further studies are needed to enhance the removal of fluorene in order to achieve a safe utilization of this sludge.

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“…PAH dissipation has been frequently observed during composting of various contaminated substrates including sewage sludge (Cai et al 2007) and organic wastes (Brändli et al 2005). The composting of contaminated soils has also been demonstrated to enhance the biodegradation of PAHs using both conventional windrow composting systems (Amir et al 2005;Atagana 2004) and in-vessel composting systems (AntizarLadislao et al 2006;Sasek et al 2003). In-vessel composting techniques are easier to operate than conventional composting systems as temperature, moisture content, ventilation, etc.…”

Section: Introductionmentioning

confidence: 99%

Remediation of polycyclic aromatic hydrocarbon (PAH) contaminated soil through composting with fresh organic wastes

Zhang

Zhu

Houot

et al. 2011

Environ Sci Pollut Res

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Introduction Composting may enhance bioremediation of PAH-contaminated soils by providing organic substrates that stimulate the growth of potential microbial degraders. However, the influence of added organic matter (OM) together with the microbial activities on the dissipation of PAHs has not yet been fully assessed. Materials and methods An in-vessel composting-bioremediation experiment of a contaminated soil amended with fresh wastes was carried out. Four different experimental conditions were tested in triplicate during 60 days using laboratory-scale reactors: treatment S (100% soil), W (100% wastes), SW (soil/ waste mixture), and SWB (soil/waste mixture with inoculation of degrading microorganisms). Results and discussion A dry mass loss of 35±5% was observed in treatments with organic wastes during composting in all the treatments except treatment S. The dissipation of the 16 USEPA-listed PAHs was largely enhanced from no significant change to 50.5±14.8% (for SW)/63.7±10.0% (for SWB). More obvious dissipation was observed when fresh wastes were added at the beginning of composting to the contaminated soil, without significant difference between the inoculated and non-inoculated treatments. Phospholipid fatty acid (PLFA) profiling showed that fungi and G-bacteria dominated at the beginning of experiment and were probably involved in PAH dissipation. Subsequently, greater relative abundances of G+bacteria were observed as PAH dissipation slowed down. Conclusions The results suggest that improving the composting process with optimal organic compositions may be a feasible remediation strategy in PAH-contaminated soils through stimulation of active microbial populations.

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Fate of polycyclic aromatic hydrocarbons during composting of lagooning sewage sludge

Cited by 90 publications

References 25 publications

Degradation of 13C-labeled pyrene in soil-compost mixtures and fertilized soil

Degradation of 13C-labeled pyrene in soil-compost mixtures and fertilized soil

Effect of Composting on Polycyclic Aromatic Hydrocarbons Removal in Sewage Sludge

Remediation of polycyclic aromatic hydrocarbon (PAH) contaminated soil through composting with fresh organic wastes

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