کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4481765 1316833 2013 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Silver nanoparticle-alginate composite beads for point-of-use drinking water disinfection
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات فرآیندهای سطح زمین
پیش نمایش صفحه اول مقاله
Silver nanoparticle-alginate composite beads for point-of-use drinking water disinfection
چکیده انگلیسی

Silver nanoparticles (AgNPs)-alginate composite beads were synthesized using three different approaches as filler materials of packed columns for simultaneous filtration-disinfection as an alternative portable water treatment process. The prepared composite beads were packed into a column through which Escherichia coli containing water was filtered to evaluate the disinfection efficacy. Excellent disinfection performance (no detectable viable colony) was achieved with a hydraulic retention time (HRT) as short as 1 min (the shortest tested) with the SGR (Simultaneous-Gelation-Reduction) and AR (Adsorption–Reduction) beads that were prepared using in situ reduction of Ag+. Comparatively, the SGR beads released significantly less Ag+/AgNPs than the AR beads did within the same HRT. From the results of this study it was identified that SGR may be the best choice among all three different synthesis approaches in that the SGR beads can achieve satisfactory bactericidal performance with a relatively low material consumption rate.

Figure optionsDownload high-quality image (160 K)Download as PowerPoint slideHighlights
► Silver–alginate composite beads were prepared using three different approaches.
► The efficacy of the composite beads for disinfection was tested using column test.
► Excellent disinfection performance was achieved with two types of composite beads.
► These composite beads provide alternative for portable water disinfection.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Water Research - Volume 47, Issue 12, 1 August 2013, Pages 3959–3965
نویسندگان
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