Impact of composting strategies on the treatment of soils contaminated with organic pollutants

Semple, Kirk T.; Reid, Brian J.; Fermor, Terry R

doi:10.1016/s0269-7491(00)00099-3

Cited by 445 publications

(217 citation statements)

References 66 publications

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“…Bioslurry reactors are highly efficient in degrading phthalic acid esters likely due to their ability to control culturing conditions and to provide nutrients that support microbial growth (Di Gennaro et al 2005;Yuan et al 2011). Furthermore, in the presence of compost, sludge, and bacterial strains, the degradation rate of phthalic acid esters was further enhanced (Table 4) when particle sizes of the amendments were smaller (Semple et al 2001;Chang et al 2009;Yuan et al 2011).…”

Section: Removal By Microbial Degradationmentioning

confidence: 99%

Contamination and remediation of phthalic acid esters in agricultural soils in China: a review

He¹,

Gielen²,

Bolan³

et al. 2014

Agron. Sustain. Dev.

237

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Phthalic acid esters have been used as plasticizers in numerous products and classified as endocrine-disrupting compounds. As China is one of the largest consumers of phthalic acid esters, some human activities may lead to the accumulation of phthalic acid esters in soil and result in contamination. Therefore, it is necessary for us to understand the current contamination status and to identify appropriate remediation technologies. Here, we reviewed the potential sources, distribution, and contamination status of phthalic acid esters in soil. We then described the ecological effect and human risk of phthalic acid esters and finally provided technologies to remediate phthalic acid esters. We found that (1) the application of plastic agricultural films, municipal biosolids, agricultural chemicals, and wastewater irrigation have been identified as the main sources for phthalic acid ester contamination in agricultural soil; (2) the distribution of phthalic acid esters in soils is determined by factors such as anthropogenic behaviors, soil type, properties of phthalic acid esters, seasonal variation, etc.; (3) the concentrations of phthalic acid esters in soil in most regions of China are exceeding the recommended values of soil cleanup guidelines used by the US Environmental Protection Agency (US EPA), causing phthalic acid ester in soils to contaminate vegetables; (4) phthalic acid esters are toxic to soil microbes and enzymes; and (5) phthalic acid ester-contaminated soil can be remedied by degradation, phytoremediation, and adsorption.

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Section: Removal By Microbial Degradationmentioning

confidence: 99%

Contamination and remediation of phthalic acid esters in agricultural soils in China: a review

He¹,

Gielen²,

Bolan³

et al. 2014

Agron. Sustain. Dev.

237

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show abstract

“…Bioremediation technologies have been developed for soils and coastal areas using the addition of nutrients and microbes [10][11][12][13]. However, it is known that biodegradation efficiencies of petroleum hydrocarbons in soil can be limited by physicochemical as well as biological factors, such as nutrients, pH, temperature, moisture, oxygen, soil properties, and contaminant concentration, number and type or species of microorganisms [14][15][16][17][18][19][20][21]. Also, oil spills result in an imbalance in the carbon-nitrogen ratio at the spill site, because crude-oil is essentially a mixture of carbon and hydrogen.…”

Section: Introductionmentioning

confidence: 99%

Factorial Designs Application to Study Enhanced Bioremediation of Soil Artificially Contaminated with Weathered Bonny Light Crude Oil through Biostimulation and Bioaugmentation Strategy

Agarry¹,

Ogunleye²

2012

JEP

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The objective of this study was designed to evaluate the effects of biostimulation and bioaugmentation amendment agents (NPK fertilizer, Tween 80 and mixed culture) on the bioremediation of tropical soil samples artificially contaminated with Weathered Bonny Light Crude Oil (WBLCO). Response Surface Methodology (RSM) with Box Behnken Design (BBD) was used with three levels and three factors of NPK fertilizer (2 -6 g), Tween 80 (5 -15 mg/l) and mixed culture (0.5 -1.5 g/l) as independent variables and WBLCO removal as dependent variable (response) in a six weeks remediation period. The results showed that the rate of WBLCO removal generally increased with increase in the amount of NPK fertilizer, Tween 80 and mixed culture (biomass), respectively. A statistically significant (P < 0.0001) second-order quadratic regression model for WBLCO removal (using design-expert statistical program (v. 6.0.8)) with a coefficient of determination, R (=0.9996) was obtained. Numerical optimization technique based on desirability function was carried out to optimize the bioremediation process. The optimum values for biostimulation and bioaugmentation amendment agents to achieve a predicted maximum WBLCO removal of 84.88 percent were found to be: NPK fertilizer, 4.25 g; Tween 80, 10.22 mg/l and mixed culture, 0.46 g/l. At this optimum point, the observed WBLCO removal was found to be 83.79 percent. The statistical analyses and the closeness of the experimental results and model predictions show the reliability of the regression model and thus, biostimulation and bioaugmentation of indigenous microbial density and activity can reduce remediation period of petroleum hydrocarbon contaminated environment and subsequently the cost of remediation.

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“…Biostimulation can also be achieved by the use of composting bioremediation technologies. Composting bioremediation strategy relies on mixing the primary ingredients of compost with the contaminated soil, such that as the compost matures, the pollutants are degraded by the active microflora within the mixture (Semple, et al, 2001). Mushroom compost and spent mushroom compost (SMC) are also applied in treating organopollutant contaminated sites (Eggen, 1999, Trejo-Hernandez et al, 2001).…”

Section: Biostimulationmentioning

confidence: 99%

Biological Remediation of Hydrocarbon and Heavy Metals Contaminated Soil

Abioye¹

2011

Soil Contamination

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Impact of composting strategies on the treatment of soils contaminated with organic pollutants

Cited by 445 publications

References 66 publications

Contamination and remediation of phthalic acid esters in agricultural soils in China: a review

Contamination and remediation of phthalic acid esters in agricultural soils in China: a review

Factorial Designs Application to Study Enhanced Bioremediation of Soil Artificially Contaminated with Weathered Bonny Light Crude Oil through Biostimulation and Bioaugmentation Strategy

Biological Remediation of Hydrocarbon and Heavy Metals Contaminated Soil

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