The Use of Verbascum Thapsus L as a Biomembrane for Activated Sludge Filtration

Publish Year: 1400
نوع سند: مقاله ژورنالی
زبان: English
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JR_AJEHE-8-2_005

تاریخ نمایه سازی: 30 مرداد 1401

Abstract:

Membrane technology is a green technology, but it still faces a pressing problem related to the effect of fabrication materials on the environment. The plant Verbascum thapsus L (VTL) was utilized as a biomembrane to reduce chemicals. In this study, VTL was successfully utilized as a membrane for activated sludge separation. The membrane was characterized via scanning electron microscopy (SEM)-EDX, Fourier transform infrared (FTIR), and contact angle measurement. Additionally, the effects of pressures on the fluxes and the rejection ability were studied. The permeability of the bio-based membrane reached ۵۸۱ L/m۲.h.bar. The VTL membrane was examined for the removal of chemical oxygen demand (COD), protein, and carbohydrate. Accordingly, the maximum COD removal was obtained at a transmembrane pressure of ۲.۵ bar and reached up to ۵۷%. The protein and carbohydrates rejections raised from ۸۰% and ۸۴% at ۰.۵ bar to ۹۰% and ۹۸% at ۲.۵ bar, respectively. The total resistance increased from ۸۷% at a pressure of ۰.۵ bar to ۹۶% at ۲.۵ bar. The flux recovery ratio (FRR) for the membrane at working pressures (۰.۵-۲.۵ bar) was ۹۶% for ۰.۵ bar and ۷۰% for ۲.۵ bar. The physical cleaning showed a flux recovery after three operation cycles. At the end of the filtration experiments, the pressure variation along streamlines over the membrane cross-section was simulated. As a result of this study, the use of a naturally-derived membrane is considered a green technology. The plant-based membrane reduces the use of non-green chemicals. Moreover, VTL has no commercial value and is recognized as an invasive plant species. All of the previous issues made the study worthwhile.

Authors

Mohammad Saleh

Department of Environmental Engineering, Mersin University, Mersin, Turkey

Hudaverdi Arsalan

Department of Environmental Engineering, Mersin University, Mersin, Turkey

Zelal Isik

Department of Environmental Engineering, Mersin University, Mersin, Turkey

Mutlu Yalvac

Department of Environmental Engineering, Mersin University, Mersin, Turkey

Nadir Dizge

Department of Environmental Engineering, Mersin University, Mersin, Turkey