An Evaluation of the Suitability of Legumes in Phytoremediation of Crude Oil Polluted Soil

F. I. Esumeh, A. R. AKPE, O. Agholor, G. I. Okwu

Author address: 

Ambrose Alli Univ., Edo State, Nigeria

Abstract: 

The remediation of crude oil polluted soils has been a major problem in oil producing countries and the use of plants to clean up such soils has been on investigation. Standard procedures were used in this study to evaluate the suitability of Glycine max and Arachis hypogea in the remediation of crude oil polluted soil. Results revealed that crude oil pollution had significant (P>0.05) negative effect on plant growth parameters such as plants height, leaf area, number of root nodules, leaf number, root length and number, chlorophyll content, shoot fresh and dry weights. Physicochemical analysis showed general increase in pH, organic matter and moisture content in planted soils while nitrogen increased in fertilized planted soils only. Calcium, phosphorus and potassium increased in fertilized soils. A total of 69 bacterial isolates from 13 genera (9 Gram negatives and 4 Gram positives) were encountered in this study while the fungal isolates were 42. Pseudomonas aeruginosa and Aspergillus niger were the most predominant crude oil degrading bacteria and fungi respectively. The total heterotrophic and crude oil degrading bacterial counts ranged from 1.0±0.58 x 107 to 30.0±0.58 x 107 cfug_1and 0.67±0.33 x 107 to 15.0±0.00 x 107 cfug_1 respectively. The total heterotrophic and crude oil degrading fungal counts ranged from 1.0 ±0.00 x 107 to 15.0 ±0.58 x 107 cfug_1 and 1.0±0.00 x 107 to 6.0±0.58 x 107cfug_1 respectively. The total petroleum hydrocarbon (TPH) was significantly (P
2016

abstract No: 

FRIDAY-105

Full conference title: 

ASM Microbe 2016
    • ASM microbe 1st (2016)