Author/Authors :
Barati, M. Department of Chemical Engineering - Faculty of Shahid Rajaee - Shiraz Branch Technical and Vocational University, Shiraz, Iran , Safarzadeh, S. Department of Chemical Engineering - Faculty of Shahid Rajaee - Shiraz Branch Technical and Vocational University, Shiraz, Iran , Mowla, D. Department of Soil Science - School of Agriculture - Shiraz University, Shiraz, Iran , Bakhtiari, F. Department of Chemical Engineering - Shahid Bahonar University of Kerman, Kerman, Iran
Abstract :
Total Petroleum Hydrocarbons (TPHs) are one of the most dangerous
organic contaminants in the environment. Therefore, the remediation of the oilcontaminated
soil is necessary. The growth of barley and oat plant was studied in the
contaminated soils (4, 6, 8% TPHs) during 5 months. Plant height, wet and dry weight of
shoots and roots of both plants were measured. Results showed that oat and barley height,
wet and dry weight of shoots and roots decreased with increasing contamination levels.
Regardless of the plants species, the highest rate of TPH reduction was observed in soil
with 4% contamination and decreased with increasing the contamination level. The TPHs
concentration in the rhizosphere of barley and oat decreased by 29.66 and 24.04% at the
6% TPHs level and by 21.24 and 17.48% at the 8% TPHs level, respectively. Cultivation
of barley and oat plants significantly accelerated the biodegradation of hydrocarbons and
reduced TPHs content in soil as compared to unplanted soil.
Keywords :
Soil remediation , Total Petroleum Hydrocarbons , Yield , Statistical Analysis
