3802

3594

كارشناسي ارشد

خاكشناسي

اصفهان: دانشگاه صنعتي اصفهان، دانشكده كشاورزي

1386

سيزده، 111، [II]ص.: مصور، جدول، نمودار

ص.ع. به فارسي و انگليسي

محمد علي حاج عباسي، مجيد افيوني

امير حسين خوشگفتار منش، خورشيد رزمجو

12/10/86

جهانگير عابدي كوپائي، مهران شيرواني

مهندسي كشاورزي

ID3594

به فارسي و انگليسي:قابل رؤيت در نسخه ديجيتال

Abstract The petroleum refinery sludge is an important source of environmentalpollution Burning and burying of the sludge may cause adverse effects on environmentand human health Thus other mechanisms for decreasing the toxic effects ofhydrocarbon substances in the sludge must be suggested Therefore application of newtechnology such as phytoremediation can be suggested as an environmental friendlymethod for degradation and remediation of petroleum contaminated soils In this study Isfahan refinery complex sludge was dewatered and air dried thenmixed by 0 10 20 30 and 40 w w ratio with two soils Typic Haplocalcids and LuvicCalcisols Different mixtures of soil and sludge land farmed for 21 days and irrigateddaily to field capacity Germination rate and the amount of contaminant uptake weremeasured For the germination study seven plants including sunflower HelianthusAnnuus safflower Carthamus Tinctorius colza Brassica Napus clover TrifolliumRepens tallfescue Festuca Arundianacea agropyron Agropyron Smithii andpoxinelia Puccenelia Distance and in the phytoremediation experiment tallfescue agropyron and two verities of bermudagrass were used Microbial respiration germination percent yield and the decrease in percent of total petroleum hydrocarbonsof Tall fescue and Agropyron risosphers were determined The lowest germination rate was observed for tallfescue poxinelia clover andcolza and the highest was in sunflower and safflower Sunflower was the only plant thathad a 100 germination rate in all the sludge treatments During the growth period afterthe germination only tallfescue agropyron and poxinelia showed resistant to all thesludge levels In general bermudagrass yield increased but tallfescue and agropyronyield decreases in sludge contaminated treatments The root shoot ratio of tallfescue andagropyron was more than bermudagrass The tallfescue and agropyron risosphers weremore effective in degradation of petroleum hydrocarbons in soil as compared tobermudagrass In the 40 sludge treatment tallfescue decreased the total petroleumhydrocarbons content by 65 percent and the highest degradation for agropyron was inthe 30 sludge treatment which was about 55 reduction in total petroleumhydrocarbons Our study shows that only the germination performance of a plant is nota good indicator of their later growth in the petroleum hydrocarbons contaminated soils Also in general our results indicated that tallfescue is the most effective plant forphytoremediation of petroleum hydrocarbons in these soils

محمد علي حاج عباسي، مجيد افيوني

امير حسين خوشگفتار منش، خورشيد رزمجو

جهانگير عابدي كوپائي، مهران شيرواني