Impact of activated charcoal on the mineralisation of 14C-phenanthrene in soils

Rhodes, Angela H.; McAllister, Laura E.; Chen, Rongrong; Semple, Kirk T.

doi:10.1016/j.chemosphere.2010.01.032

Cited by 63 publications

(57 citation statements)

References 53 publications

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“…Although AC and biochar differ physico-chemically, the extent of sorption, reduction in bioaccessibility and chemical activity by biochar is less than that of AC but follow a similar trend. The advantage of biochar here is that it encourages microbial activity that also encourages contaminant catabolism [63,69], unlike AC [12]. …”

Section: Biodegradationmentioning

confidence: 99%

“…For instance, PAHs naturally occur and are anthropogenically distributed, they are associated with soot, coal, coal tar and contain similar functional groups but are degradable [12,14,23]. Pesticides are often synthetic in nature and differ in functional groups and mode of action, some of which are banned due to toxicity and persistence in soils, whilst the degradability of pesticides has been linked to pH of the containing soil [136].…”

Section: Increasing Black Carbon Concentrationmentioning

confidence: 99%

“…The partitioning behaviour of PAHs in soils is governed by their water solubility and the amount of organic carbon in soil [9], where the contaminants become physically entrapped within soil organic matter and/or diffuse into nanopore structures [10]. The soil organic matter (SOM) comprises of rubbery and glassy phases, where the latter comprises of black carbon geosorbents [11,12]. Black carbon (BC) is the collective term for thermally altered products ranging from partly charred to highly condensed forms of organic carbon, which includes chars, charcoals, biochars, soots and graphite [13].…”

Section: Behaviour Of Organic Contaminants In Soilmentioning

confidence: 99%

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Impact of Biochar on Organic Contaminants in Soil: A Tool for Mitigating Risk?

Ogbonnaya

Semple

2013

Agronomy

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Abstract:The presence of biochar in soils through natural processes (forest fires, bush burning) or through application to soil (agriculture, carbon storage, remediation, waste management) has received a significant amount of scientific and regulatory attention. Biochar alters soil properties, encourages microbial activity and enhances sorption of inorganic and organic compounds, but this strongly depends on the feedstock and production process of biochar. This review considers biochar sources, the production process and result of pyrolysis, interactions of biochar with soil, and associated biota. Furthermore, the paper focuses on the interactions between biochar and common anthropogenic organic contaminants, such as polycyclic aromatic hydrocarbons (PAHs), pesticides, and dioxins, which are often deposited in the soil environment. It then considers the feasibility of applying biochar in remediation technologies in addition to other perspective areas yet to be explored.

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Section: Biodegradationmentioning

confidence: 99%

Section: Increasing Black Carbon Concentrationmentioning

confidence: 99%

Section: Behaviour Of Organic Contaminants In Soilmentioning

confidence: 99%

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Impact of Biochar on Organic Contaminants in Soil: A Tool for Mitigating Risk?

Ogbonnaya

Semple

2013

Agronomy

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“…Soils contain a wide variety of indigenous microflora that possess catabolic potential to degrade contaminants, such as polycyclic aromatic hydrocarbons (PAHs) [1]. Indeed, microbial degradation is a major loss pathway for PAHs from soil [1,2].…”

Section: Introductionmentioning

confidence: 99%

“…Indeed, microbial degradation is a major loss pathway for PAHs from soil [1,2]. The ability of microbes to adapt to PAHs and the time required for adaptation to occur, in part, determines the persistence of organic contaminants [3].…”

Section: Introductionmentioning

confidence: 99%

Influence of Wood Biochar on Phenanthrene Catabolism in Soils

et al. 2014

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Abstract:The impact of increasing amendments of two particle sizes of biochar (≤2 mm and 3-7 mm), applied at 0%, 0.01%, 0.1% and 1% concentrations, on the development of indigenous phenanthrene catabolism was investigated in two soils with different soil organic matter contents. Mineralisation of 14 C-phenanthrene was measured after 1, 20, 60 and 100 d soil-phenanthrene-biochar aging period. The presence of biochar in the pasture soil (low OM) resulted in a decrease in the lag phase of 14 C-phenanthrene mineralisation, with higher maximum rates of mineralisation following 20 d aging. Higher extents of 14 C-phenanthrene mineralisation were observed in the Kettering loam soil (high OM), which was more prominent with 0.01% biochar amendments (p < 0.05) at 61.2% and 64.9% in ≤2 mm and 3-7 mm biochar amended soils, respectively. This study illustrates the potential role for biochar to enhance microbial catabolic activity to degrade common petroleum contaminants. It however depends on contaminant concentration, aging period, and soil properties. OPEN ACCESSEnvironments 2014, 1 61

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