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Effects of autoclaving and mercuric chloride sterilization on PAHs dissipation in a two-liquid-phase soil slurry

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dc.contributor.author WANG Cong-Ying, WANG Fang, WANG Tao, YANG Xing-Lun, BIAN Yong-Rong, FO Kengara, LI Zeng-Bo, Xin Jiang
dc.date.accessioned 2020-08-17T12:37:24Z
dc.date.available 2020-08-17T12:37:24Z
dc.date.issued 2011-02-01
dc.identifier.citation 16 en_US
dc.identifier.uri https://repository.maseno.ac.ke/handle/123456789/2165
dc.description The article can be accessed in full-text via;https://www.sciencedirect.com en_US
dc.description.abstract A two-liquid-phase (TLP) soil slurry system was employed to quantify the efficiencies of autoclaving and mercuric chloride sterilization in the dissipation of polycyclic aromatic hydrocarbons (PAHs). The fates of 11 PAHs (naphthalene, fluorene, phenanthrene, anthracene, fluoranthene, pyrene, benzo(a)anthracene, benzo(a)pyrene, benzo(b)fluoranthene, benzo(k)fluoranthene, dibenzo(a, h)anth-racene) were recorded over 113 days of incubation. No microorganisms were detected in the HgCl2-sterilized soil slurries during the whole incubation period, indicating very effective sterilization. However, about 2%–36% losses of PAHs were observed in the HgCl2-sterilized slurry. In contrast to the HgCl2-sterilized soil slurry, some microorganisms survived in the autoclaved soil slurries. Moreover, significant biodegradation of 6 PAHs (naphthalene, fluorene, phenanthrene, anthracene, fluoranthene and pyrene) was observed in the autoclaved soil slurries. This indicated that biodegradation results of PAHs in the soil slurries, calculated on basis of the autoclaved control, would be underestimated. It could be concluded that the sterilization efficiency and effectiveness of HgCl2 on soil slurry was much higher than those of autoclaving at 121 °C for 45 min. en_US
dc.publisher Elsevier en_US
dc.subject adsorption;aqueous solubility;biodegradation;microorganisms;octanol-water partition coefficient en_US
dc.title Effects of autoclaving and mercuric chloride sterilization on PAHs dissipation in a two-liquid-phase soil slurry en_US
dc.type Article en_US


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