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Effects of cotton on several enzymatic activities of the petroleum contaminated soil. A laboratory experiment

Jingyan L., Jianxiong W., Ying H., Xianyong J.

Environment Protection Engineering

2013

Vol. 39, nr 1

163--182

A laboratory experiment lasting for 90 days was conducted to examine the interaction between a remediation plant, Gossypium hirsutum, and the petroleum contaminated soil. Root indices and 9 various types of soil enzymatic activities in two separate groups were determined. Results showed that compared to the uncontaminated control, the growth of cotton roots was slightly strengthened at the pollution level of 1000 mg-kg-1, while seriously inhibited at the pollution level of 2000 mg-kg-1 and 4000 mg-kg-1. At the same pollution level, all studied soil enzymatic activities except alkaline phosphatase were markedly higher in the group with plants than in the group without plants which may indicate that the content of nutrients essential for plant growth as well as the activities of microorganisms capable of degrading contaminants were both enhanced in soils planted with cotton, therefore conducive to the increase of the overall fertility level and the degradation of pollutants in the petroleum contaminated soil.

Ocena wpływu zmodyfikowanego nadtlenku wapnia na właściwości gleb trwale zanieczyszczonych związkami ropopochodnymi

Turek-Szytow J., Ziembińska A., Miksch K., Tekla P., Walawska B., Gluzińska J.

Przemysł Chemiczny

2012

T. 91, nr 6

1209-1213

Nadtlenek wapnia został użyty do wspomagania biodegradacji wielopierścieniowych węglowodorów aromatycznych w glebie trwale zanieczyszczonej związkami ropopochodnymi. Badania wykazały korzystny wpływ zabiegu na właściwości fizyczno-chemiczne zdegradowanej gleby oraz wzrost bioróżnorodności mikroflory autochtonicznej w niej występującej.

CaO₂ was optionally modified by addn. of urea and phosphates and then used for enhancement of biodegrdn. of polycyclic arom. hydrocarbons (PAH) in soil permanently polluted with petroleum. The CaO₂ treatment of microfloracontg. soil resulted in an increase in PAH removal by biodegrdn. up to 58% for anthracene, 66% for fluoranthene, 80% for pyrene ang 96% for chryzene.