کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
629190 1455502 2006 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Fouling autopsy of hollow-fibre MF membranes in wastewater reclamation
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تصفیه و جداسازی
پیش نمایش صفحه اول مقاله
Fouling autopsy of hollow-fibre MF membranes in wastewater reclamation
چکیده انگلیسی

Fouling in membrane filtration processes is problematic but inevitable as it occurs with the retention of contaminants that accumulate on the membrane surface. The causes of fouling are often specific, depending upon feed water constituents, the membrane, and the operation regime. Therefore, it is desirable that a thorough investigation is performed on fouled membrane elements of the affected plant. This technique is known as “membrane autopsy”, which identifies the cause of poor membrane performance, and hence, gives the opportunity to rectify or mitigate the problem and improve future plant design. The cause of membrane fouling at a small water recycling plant using a hollow-fibre microfiltration system was investigated. A membrane autopsy protocol was developed for water recycling applications that consists of four major steps: (1) tensile testing to investigate the membrane mechanical integrity, (2) direct visual inspection, (3) membrane surface analysis using field-emission environmental scanning electron microscopy (as well as atomic force microscopy, although it is not used in this case) techniques, and (4) foulant constituent analysis. Results obtained from this study indicate that the membrane was fouled by a mixture of colloids and organic matters, enhanced by the presence of multivalent cations. Possible measures to mitigate fouling in this particular case have also been suggested.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Desalination - Volume 188, Issues 1–3, 5 February 2006, Pages 113-121