کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
151626 456476 2011 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Pilot scale studies on the remediation of chromium contaminated aquifer using bio-barrier and reactive zone technologies
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Pilot scale studies on the remediation of chromium contaminated aquifer using bio-barrier and reactive zone technologies
چکیده انگلیسی

Pilot scale studies were carried out to evaluate the suitability of bioremediation of Cr(VI) contaminated aquifers using bio-barrier and reactive zone technologies, employing chromium reducing bacteria. Experimental results showed that a 10 cm thick bio-barrier with an initial biomass concentration of 0.44 mg/g of soil was able to completely contain a Cr(VI) plume of 50 mg/L concentration, when the Darcy velocity was 0.0196 cm/h. In the case of reactive zone technology, a system with four injection wells was effective even when Cr(VI) concentration in the plume was as high as 250 mg/L, when 150 g (wet weight) of bacteria were injected into each injection well. A mathematical model was proposed for simulating the bioremediation process. Though the model could predict the over all trends observed in the experiments, it is limited by the assumption of homogeneous conditions.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemical Engineering Journal - Volume 167, Issue 1, 15 February 2011, Pages 206–214
نویسندگان
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