6652

6203

كارشناسي ارشد

خاكشناسي

اصفهان: دانشگاه صنعتي اصفهان، دانشكده كشاورزي

1390

سيزده، 102ص.: مصور، جدول، نمودار

ص.ع. به فارسي و انگليسي

محمد علي حاج عباسي، محمد رضا مصدقي

مجيد افيوني

12/2/91

اميرحسين خوش گفتارمنش، مريم حقيقي

1396/10/06

كتابنامه

كشاورزي

مهندسي كشاورزي

ID6203

به فارسي و انگليسي: قابل رويت در نسخه ديجيتالي

Using Natural Zeolite Waste Water and Sewage Sludge in Soil on Uptake of Heavy Metals by Garden Cress Sayed Noraldin Hashemi Noredin Hashemi@gmail com 12 November 2011 Department of Soil Science College of Agriculture Isfahan University of Technology Isfahan 84156 83111 IranDegree M Sc Language FarsiDr M A Hajabbasi Hajabbas@cc iut ac irAbstractWater shortage in Iran and other arid and semi arid zones is one of the limiting factors for agriculturalproduction Reuse of wastewater in agricultural lands could be one of the ways to overcome this problem Application of organic components especially sewage sludge could improve soil properties such asinfiltration rate and water holding capacity Presence of heavy metals in wastewater and sewage sludgeand on the other hand lack of refinery in most industries in developing countries are major challenges Application of Zeolite to agricultural lands is a way of mitigating the limitations related to wastewaterand sewage sludge usage on these lands Due to high ion exchange properties Zeolites can retain heavymetals originated from wastewater The aim of this study was to evaluate the effect of mixing differentrates of natural Zeolite with soil in combination with using untreated wastewater as irrigation water andsewage sludge on heavy metals cadmium lead and zinc uptake by garden cress Lepidium sativum Factorial arrangement of treatments within main design of completely randomized blocks with threereplicates was used Three rates 0 1 and 2 mass percent of natural Zeolite and two types of soil sandyand clay with four types of pollution sources untreated wastewater sewage sludge metals enrichedwastewater and combined application of untreated wastewater and sewage sludge were applied Heavymetals concentration and uptake as well as plant yield were determined at the end of growing period Theresults showed that application of Zeolite reduced the cadmium uptake by plants The pollution treatmentshad significant effects on uptake of this element by plants Applying Zeolite to the soil insignificantlyreduced the cadmium uptake when compared with the control treatment Soil type did not have significanteffect on cadmium uptake by plants however the uptake was greater in sandy soil compared to clayeysoil Uptake of lead in treatments containing sewage sludgewas significantly was lower than othertreatments In addition type of soil did not have significant effect on lead uptake by plants However application of Zeolite reduced the lead uptake by plants when compared with control Plants irrigatedwith wastewater had the highest uptake of zinc uptake Soil type and Zeolite levels did not have asignificant effect on zinc uptake by plants In order to minimize the hazardous effects of heavy metalsentrance from the wastewater into the plants and food chain it is suggested to apply 2 mass percentZeolite to the soils Applying 1 mass percent Zeolite to the soils which were irrigated with wastewaterspolluted with heavy metals loosely adsorbed by this mineral Keywords Wastewater Zeolite Lepidium sativum and Heavy metals

محمد علي حاج عباسي، محمد رضا مصدقي

مجيد افيوني

اميرحسين خوش گفتارمنش، مريم حقيقي