کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7021213 1456006 2015 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effect of feedwater pre-treatment using UV/H2O2 for mitigating the fouling of a ceramic MF membrane caused by soluble algal organic matter
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تصفیه و جداسازی
پیش نمایش صفحه اول مقاله
Effect of feedwater pre-treatment using UV/H2O2 for mitigating the fouling of a ceramic MF membrane caused by soluble algal organic matter
چکیده انگلیسی
Soluble algal organic matter (AOM) resulting from cyanobacterial blooms can cause severe fouling for water treatment membranes as it contains a large proportion of high molecular weight (MW) organics such as biopolymers and humic-like substances. UV/H2O2 advanced oxidation of feedwater containing AOM derived from Microcystis aeruginosa was investigated as a means of mitigating the fouling of a ceramic microfiltration (MF) membrane and degrading the algal toxin microcystin-LR. The result was compared with the pre-treatment using coagulation with ACH. UV/H2O2 treatment and coagulation achieved a marked and comparable reduction in total fouling resistance, however coagulation led to considerably lower irreversible fouling. The significant reduction in membrane fouling by the pre-treatments was attributed to the effective breakdown/removal of the very high MW biopolymers (≥20,000 Da) and high MW organic substances (~10,000 Da) in the AOM. UV/H2O2 treatment resulted in the generation of lower MW substances due to partial oxidation of the large molecules, and consequently greater irreversible membrane fouling compared with coagulation. Microcystin-LR was completely inactivated by UV/H2O2, whereas coagulation was ineffective for removing it.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Membrane Science - Volume 493, 1 November 2015, Pages 683-689
نویسندگان
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