Graphene nanoplatelet-enhanced PANI-PAMPSA ultrafiltration membranes: influence of conductivity on fouling and electro-assisted cleaning.
- 1Bilecik Şeyh Edebali University, Faculty of Science, Department of Chemistry 11100 Bilecik Türkiye [email protected] +90 228 214 1332 +90 228 214 1845.
- 2Bilecik Şeyh Edebali University, Graduate Education Institute, Department of Chemistry 11100 Bilecik Türkiye.
Abstract
Membrane fouling remains one of the major challenges limiting the efficiency and long-term operation of membrane separation processes. Although electro-assisted cleaning has emerged as a promising fouling mitigation strategy, membrane electrical properties can play an important role in determining the cleaning response. However, the relationship between membrane conductivity, intrinsic fouling behavior, and electro-assisted cleaning performance remains insufficiently understood. In this study, graphene nanoplatelet (GNP)-modified poly(2-acrylamido-2-methyl-1-propanesulfonic acid) (PAMPSA)-doped polyaniline (PANI) ultrafiltration membranes were fabricated to investigate the relationship between membrane conductivity, fouling behavior, and electro-assisted cleaning performance. GNP incorporation increased membrane conductivity up to 2.16 × 10⁻³ S cm⁻¹, representing a 4.2-fold enhancement over the pristine membrane. Although water permeability decreased, all membranes maintained excellent ultrafiltration performance, exhibiting >92% bovine serum albumin (BSA) rejection and >82% humic acid (HA) rejection. Notably, GNP incorporation did not improve intrinsic fouling resistance under hydraulic cleaning conditions, whereas electro-assisted cleaning performance progressively improved with increasing GNP loading and membrane conductivity. These results support the contribution of enhanced membrane conductivity to electro-assisted cleaning, while concurrent GNP-induced changes in membrane morphology and surface properties may also contribute to the observed response.
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BibTeX
@article{sarihan2026graphene,
title = {{Graphene nanoplatelet-enhanced PANI-PAMPSA ultrafiltration membranes: influence of conductivity on fouling and electro-assisted cleaning.}},
author = {Adem Sarihan and Hüseyin Oğuz},
journal = {RSC advances},
year = {2026},
month = oct,
doi = {10.1039/d6ra07599a},
url = {https://europepmc.org/article/MED/42852176},
note = {CC BY-NC},
}
RIS
TY - JOUR
TI - Graphene nanoplatelet-enhanced PANI-PAMPSA ultrafiltration membranes: influence of conductivity on fouling and electro-assisted cleaning.
AU - Adem Sarihan
AU - Hüseyin Oğuz
PY - 2026
DA - 2026/10/08
JO - RSC advances
DO - 10.1039/d6ra07599a
UR - https://europepmc.org/article/MED/42852176
AB - Membrane fouling remains one of the major challenges limiting the efficiency and long-term operation of membrane separation processes. Although electro-assisted cleaning has emerged as a promising fouling mitigation strategy, membrane electrical properties can play an important role in determining the cleaning response. However, the relationship between membrane conductivity, intrinsic fouling behavior, and electro-assisted cleaning performance remains insufficiently understood. In this study, graphene nanoplatelet (GNP)-modified poly(2-acrylamido-2-methyl-1-propanesulfonic acid) (PAMPSA)-doped polyaniline (PANI) ultrafiltration membranes were fabricated to investigate the relationship between membrane conductivity, fouling behavior, and electro-assisted cleaning performance. GNP incorporation increased membrane conductivity up to 2.16 × 10⁻³ S cm⁻¹, representing a 4.2-fold enhancement over the pristine membrane. Although water permeability decreased, all membranes maintained excellent ultrafiltration performance, exhibiting >92% bovine serum albumin (BSA) rejection and >82% humic acid (HA) rejection. Notably, GNP incorporation did not improve intrinsic fouling resistance under hydraulic cleaning conditions, whereas electro-assisted cleaning performance progressively improved with increasing GNP loading and membrane conductivity. These results support the contribution of enhanced membrane conductivity to electro-assisted cleaning, while concurrent GNP-induced changes in membrane morphology and surface properties may also contribute to the observed response.
SN - 2046-2069
ER -