Phytoremediation of oil contaminated soil by some arid legume tree species.
Journal Title: Advances in Environmental Sciences - International Journal of the Bioflux Society - Year 2010, Vol 2, Issue 1
Abstract
Petroleum contamination of soil is a serious problem throughout the world. Phytoremediation is a promising technology for the clean up of petroleum contaminated soil. In the present work the rhizosphere of Prosopis cineraria (L.) Druce, Acacia senegal (L.) Willd. and Acacia nilotica (L.) Willd. Ex. Del. plants were tested for their abilities to stimulate the microbial degradation of soil pollutants in desert soil contaminated with 2.5-2.6% crude petroleum oil. The results showed that the roots of the three different plants were density associated with total bacteria, fungi and oil-degrading microorganisms, this is confirmed from the (R+/S+) ratios which ranged from 55.2-250.8 (for total acteria), 20-131.3 (for fungi) and 95.7-296.1 (for oil degraders). Percentages of oil-degraders were higher in the rhizosphere soil of P. cineraria (65.5%) as compared to the rhizosphere soil of A. senegal and A. nilotica plants (22.5 % and 20.2 % respectively). The results of the biodegradation of oil and its fractions showed that great reduction (26 %) of total petroleum hydrocarbons (TPHs) was observed in the rhizosphere soil of P. cineraria as compared to 15.6 % and 12.8 % reduction in rhizosphere soil of A. senegal and A. nilotica respectively. It was observed also that in the polluted non-cultivated soil the TPHs were reduced by 8.2 - 10.5 % as a result of biostimulation process only (addition of nutrients).The results also showed that P. cineraria rhizosphere was able to reduce more of the saturated (43.0 %) and more of the aromatics (25.7 %) fractions, compared to (35.2 % and 7.9 %) for A. senegal and (31.2 % and 4.1 %) for A. nilotica rhizospheres. It is of interest to find that 5.3 % of the hardly degradable fraction resins were degraded in rhizosphere soil of P. cineraria. The present results clearly demonstrated that P. cineraria provided successful phytoremediation process of a contaminated desert soil as ompared to the other two legume trees.
Authors and Affiliations
Nishi Mathur, Joginder Singh, Sachendra Bohra, Avinash Bohra, Mehboob Chauhan, Mohnish Vyas, Anil Vyas
Keywords
Related Articles
- EP ID EP84854
- DOI -
- Views 142
- Downloads 0
Preliminary study of the terrestrial gastropods diversity (Gastropoda: Stylomatophora) from Cefa Nature Park (NW of Romania).
The paper presents the first investigation over the terrestrial gastropods fauna from Cefa Nature Park (NW of Romania). The samples were collected every month (April 2009 - March 2010), using hand collection, soil collec...
First record of Saga pedo (Orthoptera,Tettigoniidae) in Suceava County with notes on its distribution in Eastern Romania
The predatory bush-cricket Saga pedo Pallas, 1771 is mentioned for the first time from “Fâneţele Seculare Ponoare” Bosanci Natural Reserve, located few kilometers south of Suceava city, Suceava county (Romania). Th...
The influence of competition and dimensional-spatial characteristics of trees on their radial growth in Old-Growth Slătioara forest, Romania.
The paper tries to identify how the radial growths of trees from old-growth forests are influenced by some forest structural elements, but also how the radial growths depend on the biometric characteristics of trees. The...
Phytoplankton diversity and abundance in Panguil Bay, Northwestern Mindanao, Philippines in relation to some physical and chemical characteristics of the water
Phytoplankton composition diversity, abundance and their relation with the physico-chemical parameters of the waters in two coastal sites in Panguil Bay, Philippines were compared. A total of 93 species belonging to...
Development of biotic index based on rapid bioassessment approaches using benthic macroinvertebrates for Chi and Mun headwater streams, northeast Thailand.
The objective of present study is to select high performance metrics for developing a multimetrics biotic index to assess headwater stream conditions of the Chi and Mun basins in northeastern Thailand (Khorat Platau (Mek...