Effect of Palygorskite Clay, Fertilizers, and Lime on the Degradation of Oil Products in Oligotrophic Peat Soil under Laboratory Experimental Conditionsстатья
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Дата последнего поиска статьи во внешних источниках: 10 августа 2018 г.
Аннотация:Abstract⎯The effect of native palygorskite clay and that modified with dodecyltrimethylammonium chloride
on the degradation of oil products in an oligotrophic peat soil under complete flooding at the application of
lime and mineral fertilizers has been studied under laboratory conditions. It has been shown that the incubation
of oil-contaminated soil with unmodified clay and fertilizers at the application of lime under complete
flooding with water affects the dynamics of pH and Eh and slows the development of reducing conditions
compared to the use of clay without fertilizers. The addition of organoclay under similar conditions favors the
formation of potential-determining system with a high redox capacity, which is capable of retaining the
potential on a level of 100–200 mV at pH ~ 7 for two months. It has been found that, under the experimental
conditions, unmodified and modified clay, which has no toxic effect on the bacterial complex, does not
increase the biodegradation efficiency of oil products in the oligotrophic peat soil compared to the experimental
treatments without clay addition. Possible reasons for no positive effect of palygorskite clay on the
biodegradation rate of oil products under experimental conditions have been analyzed.