Inoculum Addition in the Presence of Plant Rhizosphere for Petroleum- Polluted Soil Remediation

Inoculum Addition in the Presence of Plant Rhizosphere for Petroleum- Polluted Soil Remediation

Abstract

Breakdown of the crude oil contaminant by soil microbial community in the bioremediation can be enhanced in the presence of plant rhizosphere, but plant cannot grow and tolerate the high concentration of hydrocarbon. Composting of the crude oil-contaminated soil was found to be an effective technology to decrease the pollutant concentration to the acceptable level for plant growth. Phytoremediation with native plants followed with composting can be performed well, but the microbial abundance in the contaminated soil usually becomes much low as time passes. In order to enhance the degradation potential of heterotrophic microorganisms in bioremediation, different bioaugmentation techniques are used, while few researches also used plant rhizosphere along with it, but the results are ambiguous. The present chapter will explore this ambiguity by providing the complete description about the bioremediation and the facts that plant rhizosphere selects microbial community, which is more suitable for pollutant degradation than addition of microbial culture in soil. Rhizodegradation followed with composting is found to be a useful treatment method for extremely polluted soil, and bioaugmentation with immobilized and free bacterial culture was found more effective without plant.

No. of Pages
30-35
Volume
1
Author's Details
Farhana Maqbool, Zulfiqar A. Bhatti, Muhammad Faisal Siddiqui, Ibrar Khan, Yang Guo Zhao, Muhammad Sajid, Umm-e-Kalsoom, Qaiser Mehmood, and Faiza Nawaz
Research Field
Microbiology