کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
148722 456421 2013 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Pharmaceutical and personal care products removal from drinking water by modified cellulose acetate membrane: Field testing
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Pharmaceutical and personal care products removal from drinking water by modified cellulose acetate membrane: Field testing
چکیده انگلیسی


• Novel NF cellulose acetate membrane developed using charged tailor-made additive.
• Novel NF membrane and commercial NF membrane field tested for PPCP removals.
• New membrane achieved significant removals of ibuprofen and sulfamethazine.
• Commercial NF membrane had somewhat better PPCP removals and higher fluxes.

To maximize the removal of charged pharmaceutical and personal care products (PPCPs), modified cellulose acetate (CA) nanofiltration (NF) membranes were developed by incorporating charged surface modifying macromolecules (CSMM) to increase their surface charge. The objective of this study was to evaluate their removal of trace levels of PPCPs at two water treatment plants. This new membrane and a commercial thin-film composite (TFC) NF membrane (Filmtec NF-270) were tested simultaneously in the field using two SEPA cells. The testing was conducted at the Britannia Water Treatment Plant (Ottawa, ON) and the Walkerton Clean Water Centre (Walkerton, ON). The challenge waters were filter effluents spiked with ppt and ppb levels of carbamazepine (CBZP), ibuprofen (IBUP) and sulfamethazine (SFMZ). The new experimental modified CA membrane achieved very good IBUP removals, good SFMZ removals and poor CBZP removals. The commercial TFC NF membrane (NF-270) had better removals and significantly higher fluxes than the modified CA membrane. The larger removals are not surprising given that the commercial membrane is the result of extensive development and optimization, while the modified CA membrane has undergone very limited optimization. The larger flux of the NF-270 membrane is also expected given that this is a TFC membrane, while the experimental modified membrane was prepared via a single casting step via the phase inversion technique which produces a thicker skin layer.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemical Engineering Journal - Volume 225, 1 June 2013, Pages 848–856
نویسندگان
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