کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7076514 1459976 2014 35 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
The effects of mediator and granular activated carbon addition on degradation of trace organic contaminants by an enzymatic membrane reactor
ترجمه فارسی عنوان
اثرات افزایشی کربن فعال و میانجی گرانولها بر کاهش آلاینده های آلی ردیابی توسط یک راکتور غشای آنزیمی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تکنولوژی و شیمی فرآیندی
چکیده انگلیسی
The removal of four recalcitrant trace organic contaminants (TrOCs), namely carbamazepine, diclofenac, sulfamethoxazole and atrazine by laccase in an enzymatic membrane reactor (EMR) was studied. Laccases are not effective for degrading non-phenolic compounds; nevertheless, 22-55% removal of these four TrOCs was achieved by the laccase EMR. Addition of the redox-mediator syringaldehyde (SA) to the EMR resulted in a notable dose-dependent improvement (15-45%) of TrOC removal affected by inherent TrOC properties and loading rates. However, SA addition resulted in a concomitant increase in the toxicity of the treated effluent. A further 14-25% improvement in aqueous phase removal of the TrOCs was consistently observed following a one-off dosing of 3 g/L granular activated carbon (GAC). Mass balance analysis reveals that this improvement was not due solely to adsorption but also enhanced biodegradation. GAC addition also reduced membrane fouling and the SA-induced toxicity of the effluent.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Bioresource Technology - Volume 167, September 2014, Pages 169-177
نویسندگان
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