کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
683841 889008 2010 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Column studies on the evaluation of novel spacer granules for the removal of arsenite and arsenate from contaminated water
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تکنولوژی و شیمی فرآیندی
پیش نمایش صفحه اول مقاله
Column studies on the evaluation of novel spacer granules for the removal of arsenite and arsenate from contaminated water
چکیده انگلیسی

Decontamination of arsenic ions from aqueous media has been investigated using iron chitosan spacer granules (ICS) as an adsorbent. Drying of beads saturated with a spacer sucrose was considered as simple treatment, to prevent the restriction of polymer network and enhance sorption capacity. The novel sorbent was studied in up flow column experiments conducted at different flow rates, pH and bed depth to quantify the treatment performance. It was found that silicate was more inhibitory than phosphate, and the silicate in groundwater controlled the arsenic removal efficiency. The column regeneration studies were carried out for two sorption–desorption cycles using 0.1 N NaOH as the eluant. TCLP leaching tests were conducted on the arsenic loaded adsorbent which revealed the containment of arsenic-laden sludge can be managed without adverse environmental impact. The developed procedure was successfully applied for the removal of both As(III) and As(V) from arsenic contaminated drinking water samples.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Bioresource Technology - Volume 101, Issue 7, April 2010, Pages 2173–2179
نویسندگان
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