Reducing the bioavailability of PCBs in soil to plant by biochars assessed with triolein-embedded cellulose acetate membrane technique

Wang, Yu; Wang, Yujun; Wang, Lei; Fang, Guodong; Cang, Long; Herath, H.M.S.K.; Zhou, Dongmei

doi:10.1016/j.envpol.2012.12.004

Cited by 29 publications

(12 citation statements)

References 38 publications

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“…Once again, we observed greater reductions in BAF values in the ACenriched soils than in the soils enriched with the other biochar types (Table 2). This result is consistent with previous studies investigating bioaccumulation of PCBs in plants (Wang et al 2013c). Earthworm activity alleviated poor aeration in the soils through bioturbation, burrowing activity that modifies the biotic and abiotic soil environment (Singer et al 2001).…”

Section: Characteristics Of the Biochars And Acsupporting

confidence: 94%

“…The preparation of biochar in this study follows the protocols described by Wang et al (2013c). Briefly, two types of biochar were derived from wheat straw (WC) and pine needle (PC) under anoxic conditions by the patented facility (ZL 2009 2 0232191.…”

Section: Biocharmentioning

confidence: 99%

“…Hence, organic molecules present in the soil are encapsulated by the cyclodextrin macromolecule to form an inclusion complex (Dean and Scott 2004). In our previous research, we used TECAM coupled with HPCD extraction to measure the effect of biochar addition to soil on the bioavailability of PCBs to plants (Brassica chinensis L. and Daucus carota; Wang et al 2013c). We found that the concentration of PCBs accumulated in both the TECAM and the HPCD extraction solution followed a linear relationship with concentrations found in the plant roots.…”

Section: Introductionmentioning

confidence: 95%

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Measuring the bioavailability of polychlorinated biphenyls to earthworms in soil enriched with biochar or activated carbon using triolein-embedded cellulose acetate membrane

Wang

et al. 2015

J Soils Sediments

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Purpose Polychlorinated biphenyls (PCBs) are persistent soil contaminants that resist biodegradation and present serious risks to living organisms. The presence of biochar in soils can lower the availability of PCBs to biota. In this study, the effect of biochar enrichment in soils on bioaccumulation of PCBs was investigated. Materials and methods We applied two types of biochar including pine needle biochar (PC) and wheat straw biochar (WC), and an activated carbon (AC) to soil (2 % w/w) and employed two alternative methods to quantified rates of bioaccumulation: a living bioassay (using earthworm, Eisenia fetida, as a model organism) and a triolein-embedded cellulose acetate membrane (TECAM). Results and discussion Our results show that the application of biochar or AC greatly reduced the uptake of PCBs (particularly less-chlorinated PCBs) by earthworms (the reduction in total PCBs concentration was up to 40.0 and 49.0 % for PC and WC treatments, while 71.6 % for AC application). We found that the bioaccumulation factors (BAFs) for PCBs in the earthworms in biochar/AC-enriched soils were strongly correlated with O:C ratio of the biochar/AC (R 2 =0.998, p<0.05). We observed that BAFs increased at log K OW below 6.3 and decreased at log K OW values greater than 6.3. We demonstrated that the concentration of PCBs in TECAM membranes were positively correlated with the concentration of PCBs earthworms in soil.Conclusions TECAM offers an efficient and cost-effective method for predicting the bioavailability of PCBs in fieldcontaminated soils undergoing sorbent-based remediation.

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Section: Characteristics Of the Biochars And Acsupporting

confidence: 94%

Section: Biocharmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 95%

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Measuring the bioavailability of polychlorinated biphenyls to earthworms in soil enriched with biochar or activated carbon using triolein-embedded cellulose acetate membrane

Wang

et al. 2015

J Soils Sediments

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“…Reductions in PAH and hexachlorobenzene bioaccessibility after biochar amendment have been measured using cyclodextrin extractions and correlate well with reductions in uptake by earthworms Song et al, 2012). Wang et al (2013) also reported correlations in reduced PCB bioaccessibility measured using cyclodextrin and reduced PCB bioaccumulation in plant root tissues.…”

Section: Chemical Methods To Assess Contaminant Mobility and Availabimentioning

confidence: 86%

“…No significant reduction in PAH concentrations in porewater were found by Brennan et al (2014b), and only slight reductions in some DDT (dichlorodiphenyltrichloroethane) metabolites were reported by Andrade et al (2014). However, Wang et al (2013) measured reduced bioavailability of PCBs (polychlorinated biphenyls) using TECAM, and these reductions correlated strongly with reductions in uptake by plant roots.…”

Section: Chemical Methods To Assess Contaminant Mobility and Availabimentioning

confidence: 93%

Application of Biochar for Soil Remediation

Sizmur

Puga

Moreno‐Jiménez

et al. 2015

SSSA Special Publications

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Biochar: A New Environmental Paradigm in Management of Agricultural Soils and Mitigation of GHG Emission

Borah

Baruah

Gogoi

et al. 2020

Biochar Applications in Agriculture and Environment Management

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Reducing the bioavailability of PCBs in soil to plant by biochars assessed with triolein-embedded cellulose acetate membrane technique

Cited by 29 publications

References 38 publications

Measuring the bioavailability of polychlorinated biphenyls to earthworms in soil enriched with biochar or activated carbon using triolein-embedded cellulose acetate membrane

Measuring the bioavailability of polychlorinated biphenyls to earthworms in soil enriched with biochar or activated carbon using triolein-embedded cellulose acetate membrane

Application of Biochar for Soil Remediation

Biochar: A New Environmental Paradigm in Management of Agricultural Soils and Mitigation of GHG Emission

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