Skip to main content
فهرست مقالات

Effect of soil amendments on phytoextraction potentialof Brassica juncea growing on sewage sludge

نویسنده:

چکیده:

A pot experiment was conducted to investigate the influence of elemental sulfur, gypsum and chelating agent (Ethylenediaminetetraacetic acid) on copper, zinc, nickel, cadmium, chromium and lead uptake by Brassica juncea from sewage sludge. Addition of sulphur acidified the sludge, which caused the pH decrease to 5.4 with an initial pH 6.7. The shoot and root biomass were increased with sulfur addition, while decreased with Ethylenediaminetetraacetic acid addition. Applications of Ethylenediaminetetraacetic acid and sulfur resulted in a considerable increase in copper and lead concentrations in the plant. The highest root concentration of copper obtained to be 110 mg/kg dw at Ethylenediaminetetraacetic acid treatment. For sulfur treatment, lead concentrations in shoots indicated almost high concentrations 77 mg/kg, about twofold increases relative to roots (34 mg/kg). The Transportation Index of all studied metals were quite low (TI\0.5), whereas the Bioaccumulation Factor values were much higher, varied from 0.01 to 9.67. Furthermore, the plant showed better Bioaccumulation Factor for copper and lead metals in both shoot and root. The efficiency to remove copper and lead from sludge is high in this plant. As a result, elemental sulfur will be effective amendment for phytoextraction of heavy metals from sewage sludge.

کلیدواژه ها:

Gypsum ، Biosolid Ethylenediaminetetraacetic acid ، Elemental sulfur ، Heavy metal removal ، Hyperaccumulator plant


برای مشاهده محتوای مقاله لازم است ورود پایگاه شوید. در صورتی که عضو نیستید از قسمت عضویت اقدام فرمایید.

لمشاهدة محتوی المقال یلزم الدخول إلی دخول الموقع.
إن كنت لا تقدر علی شراء الاشتراك عبرPayPal أو بطاقة VISA، الرجاء ارسال رقم هاتفك المحمول إلی مدير الموقع عبر credit@noormags.ir.

You should become a Sign in to be able to see articles.
If you fail to purchase subscription via PayPal or VISA Card, please send your mobile number to the Website Administrator via credit@noormags.ir.