دورية أكاديمية
Investigation of quaternary ammonium silane-coated sand filter for the removal of bacteria and viruses from drinking water.
| العنوان: | Investigation of quaternary ammonium silane-coated sand filter for the removal of bacteria and viruses from drinking water. |
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| المؤلفون: | Torkelson AA; Department of Civil and Environmental Engineering, University of California, Berkeley, CA, USA., da Silva AK, Love DC, Kim JY, Alper JP, Coox B, Dahm J, Kozodoy P, Maboudian R, Nelson KL |
| المصدر: | Journal of applied microbiology [J Appl Microbiol] 2012 Nov; Vol. 113 (5), pp. 1196-207. Date of Electronic Publication: 2012 Aug 30. |
| نوع المنشور: | Journal Article; Research Support, Non-U.S. Gov't |
| اللغة: | English |
| بيانات الدورية: | Publisher: Oxford University Press Country of Publication: England NLM ID: 9706280 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1365-2672 (Electronic) Linking ISSN: 13645072 NLM ISO Abbreviation: J Appl Microbiol Subsets: MEDLINE |
| أسماء مطبوعة: | Publication: 2022- : Oxford : Oxford University Press Original Publication: Oxford : Published for the Society for Applied Bacteriology by Blackwell Science, c1997- |
| مواضيع طبية MeSH: | Drinking Water/*microbiology , Filtration/*methods , Quaternary Ammonium Compounds/*chemistry , Silanes/*chemistry , Silicon Dioxide/*chemistry , Water Purification/*methods, Adenoviridae/isolation & purification ; Escherichia coli/isolation & purification ; Humic Substances ; Levivirus/isolation & purification ; Poliovirus/isolation & purification ; Water Quality |
| مستخلص: | Aims: To develop an anti-microbial filter media using an attached quaternary ammonium compound (QAC) and evaluate its performance under conditions relevant to household drinking water treatment in developing countries. Methods and Results: Silica sand was coated with dimethyloctadecyl [3-(trimethoxysilyl) propyl] ammonium chloride via covalent silane chemistry. Filter columns packed with coated media were challenged with micro-organisms under different water quality conditions. The anti-bacterial properties were investigated by visualizing Escherichia coli (E. coli) attachment to coated media under fluorescence microscopy combined with a live/dead stain. A 9-cm columns with a filtration velocity of 18 m h(-1) achieved log(10) removals of 1·7 for E. coli, 1·8 for MS2 coliphage, 1·9 for Poliovirus type 3 and 0·36 for Adenovirus type 2, compared to 0·1-0·3 log(10) removals of E. coli and MS2 by uncoated sand. Removal scaled linearly with column length and decreased with increasing ionic strength, flow velocity, filtration time and humic acid presence. Escherichia coli attached to QAC-coated sand were observed to be membrane-permeable, providing evidence of inactivation. Conclusions: Filtration with QAC-coated sand provided higher removal of bacteria and viruses than filtration with uncoated sand. However, major limitations included rapid fouling by micro-organisms and natural organic matter and low removal of viruses PRD1 and Adenovirus 2. Significance and Impact of the Study: QAC-coated media may be promising for household water treatment. However, more research is needed on long-term performance, options to reduce fouling and inactivation mechanisms. (© 2012 The Authors Journal of Applied Microbiology © 2012 The Society for Applied Microbiology.) |
| المشرفين على المادة: | 0 (Drinking Water) 0 (Humic Substances) 0 (Quaternary Ammonium Compounds) 0 (Silanes) 7631-86-9 (Silicon Dioxide) |
| تواريخ الأحداث: | Date Created: 20120727 Date Completed: 20130815 Latest Revision: 20181202 |
| رمز التحديث: | 20221213 |
| DOI: | 10.1111/j.1365-2672.2012.05411.x |
| PMID: | 22831552 |
| قاعدة البيانات: | MEDLINE |
Full Text Finder | تدمد: | 1365-2672 |
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| DOI: | 10.1111/j.1365-2672.2012.05411.x |