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International Journal of Environment Science and Technology
Center for Environment and Energy Research and Studies (CEERS)
ISSN: 1735-1472
EISSN: 1735-2630
Vol. 11, No. 5, 2014, pp. 1197-1206
Bioline Code: st14117
Full paper language: English
Document type: Research Article
Document available free of charge

International Journal of Environment Science and Technology, Vol. 11, No. 5, 2014, pp. 1197-1206

 en Landfarmed oil sludge as a carbon source for Canavalia ensiformis check for this species in other resources during phytoremediation
Ramirez, D. & Dussan, J.

Abstract

Petroleum exploitation in oilfields, especially drilling, generates an oily sludge mixed with hydrocarbons and mineral solids. This oily sludge is sometimes treated by bioremediation and phytoremediation. This investigation established that landfarmed oil sludge provided adequate soil conditions to grow jack beans ( Canavalia ensiformis check for this species in other resources ) that in turn rhizo- and phytoremediated residual aliphatic and aromatic hydrocarbons in the soil. Landfarming oily sludge adequately reduced jack bean phytotoxicity. Rhizo- and phytodegradation reduced total petroleum hydrocarbons by 57.38 % during 4 months of growing jack beans. Aliphatic hydrocarbons were detected in the roots but not in the aerial parts. Polycyclic aromatic hydrocarbons were translocated to the roots, stems, leaves, and beans, requiring successive cropping to manage all risks associated with some aromatic hydrocarbons found such as: acenaphthylene, anthracene, pyrene, benzo(a)anthracene, benzo(k)fluoranthene, and benzo(a)- pyrene. Landfarming and phytoremediation, perhaps with successive crops, holds the promise of providing inexpensive management of extensive oily wastes when sufficient land is available.

Keywords
Bioremediation; Jack beans; Total petroleum hydrocarbons; Polycyclic aromatic hydrocarbons; Rhizodegradation

 
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