Final published version
Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Effect of surface-tailored biocompatible organoclay on the bioavailability and mineralization of polycyclic aromatic hydrocarbons in long-term contaminated soil
AU - Biswas, Bhabananda
AU - Sarkar, Binoy
AU - Faustorilla, Maria Vilma
AU - Naidu, Ravi
PY - 2018/5/1
Y1 - 2018/5/1
N2 - A surface-tailored organoclay (palmitic acid-tailored Arquad®-modified bentonite, ABP) was prepared for the selective adsorption of cadmium in the presence of polycyclic aromatic hydrocarbon (PAH) contaminants in a long-term contaminated soil. The efficiency of the organoclay (ABP) and the effect of its parent clays were assessed concerning the microbial viability, metal immobilization and PAHs bioavailability and biodegradation in a long-term (70 days) soil incubation study. The surface-tailored organoclay (ABP) increased the bacterial growth by 5–7 fold than the control and parent clay-amended soil. With an increased effect of aging, the ABP immobilized more Cd from the soil solution (2-folds higher than the control soil), and simultaneously increased the bioavailability (1.6–1.8 fold) of low molecular weight PAHs related to the control soil and the parent clay-amended soils. The surface-tailored organoclay (ABP) could also increase the mineralization of 14C-labeled phenanthrene by ca. 1.3-fold relative to the control experiment under a 25-days of incubation.
AB - A surface-tailored organoclay (palmitic acid-tailored Arquad®-modified bentonite, ABP) was prepared for the selective adsorption of cadmium in the presence of polycyclic aromatic hydrocarbon (PAH) contaminants in a long-term contaminated soil. The efficiency of the organoclay (ABP) and the effect of its parent clays were assessed concerning the microbial viability, metal immobilization and PAHs bioavailability and biodegradation in a long-term (70 days) soil incubation study. The surface-tailored organoclay (ABP) increased the bacterial growth by 5–7 fold than the control and parent clay-amended soil. With an increased effect of aging, the ABP immobilized more Cd from the soil solution (2-folds higher than the control soil), and simultaneously increased the bioavailability (1.6–1.8 fold) of low molecular weight PAHs related to the control soil and the parent clay-amended soils. The surface-tailored organoclay (ABP) could also increase the mineralization of 14C-labeled phenanthrene by ca. 1.3-fold relative to the control experiment under a 25-days of incubation.
KW - Bioavailability
KW - Biodegradation
KW - Polycyclic aromatic hydrocarbon
KW - Surface-tailored organoclay
U2 - 10.1016/j.eti.2018.01.013
DO - 10.1016/j.eti.2018.01.013
M3 - Journal article
AN - SCOPUS:85042174647
VL - 10
SP - 152
EP - 161
JO - Environmental Technology and Innovation
JF - Environmental Technology and Innovation
SN - 2352-1864
ER -