Submitted: 23 Aug 2021
Revision: 03 Nov 2021
Accepted: 03 Dec 2021
ePublished: 29 Dec 2021
EndNote EndNote

(Enw Format - Win & Mac)

BibTeX BibTeX

(Bib Format - Win & Mac)

Bookends Bookends

(Ris Format - Mac only)

EasyBib EasyBib

(Ris Format - Win & Mac)

Medlars Medlars

(Txt Format - Win & Mac)

Mendeley Web Mendeley Web
Mendeley Mendeley

(Ris Format - Win & Mac)

Papers Papers

(Ris Format - Win & Mac)

ProCite ProCite

(Ris Format - Win & Mac)

Reference Manager Reference Manager

(Ris Format - Win only)

Refworks Refworks

(Refworks Format - Win & Mac)

Zotero Zotero

(Ris Format - Firefox Plugin)

Avicenna J Environ Health Eng. 2021;8: 102-109.
doi: 10.34172/ajehe.2021.13
  Abstract View: 137
  PDF Download: 103

Original Article

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

Muhammed Saleh 1, Hudaverdi Arslan 1, Zelal Isik 1, Mutlu Yalvac 1, Nadir Dizge 1* ORCID logo

1 Department of Environmental Engineering, Mersin University, Mersin, Turkey
*Corresponding Author: *Correspondence to Nadir Dizge, Tel: +903243610001-17086 Email: , Email: ndizge@mersin.edu.tr


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 581 L/m2 .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 2.5 bar and reached up to 57%. The protein and carbohydrates rejections raised from 80% and 84% at 0.5 bar to 90% and 98% at 2.5 bar, respectively. The total resistance increased from 87% at a pressure of 0.5 bar to 96% at 2.5 bar. The flux recovery ratio (FRR) for the membrane at working pressures (0.5-2.5 bar) was 96% for 0.5 bar and 70% for 2.5 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.
Keywords: Verbascum thapsus, Bio-membrane, Green membrane, Activated sludge filtration,

First Name
Last Name
Email Address
Security code

Abstract View: 138

Your browser does not support the canvas element.

PDF Download: 103

Your browser does not support the canvas element.