@article{70c4fbf04c1e4f7595eede7ed077957f,
title = "3D printed photocatalytic feed spacers functionalized with β-FeOOH nanorods inducing pollutant degradation and membrane cleaning capabilities in water treatment",
abstract = "A novel 3D printed photocatalytic feed spacer was developed for use in membrane-based water and wastewater filtration systems. The spacer fulfilled two new functions; degradation of membrane-permeating pollutants in the feed and membrane cleaning, in addition to its basic role as membrane support. The spacer, designed based on a triply periodic minimal surface architecture, was coated with polydopamine-polyethyleneimine, on which a photocatalytic layer of β-FeOOH nanorods was mineralized. The photocatalytic performance of the spacer was demonstrated through the degradation of methylene blue and 4-nitrophenol, both in batch and crossflow ultrafiltration (UF) modes. The spacer also exhibited the ability to clean the membrane surface of three organic foulants (humic acid (HA), sodium alginate (SA) and bovine serum albumin (BSA)), with a flux recovery ratio of 92 %, 60 %, and 54 % achieved for SA, HA, and BSA, respectively. This enables a shift to spacer-centered photocatalytic membrane system approach in water and wastewater treatment.",
keywords = "Iron nanorods, Membrane fouling, Photocatalytic spacer, Pollutant degradation, Water treatment",
author = "Nurshaun Sreedhar and Mahendra Kumar and {Al Jitan}, Samar and Navya Thomas and Giovanni Palmisano and Arafat, {Hassan A.}",
note = "Funding Information: We thank Dr. Reza Rowshan and Dr. Oraib Al-Ketan for their valuable assistance in preparing STL files for 3D printing. The TPMS spacers were printed using the Core Technology Platform resources at NYU Abu Dhabi. We thank Khulood Alawadi for her assistance in 3D printing. We thank Botagoz Zhuman from CMAT, Khalifa University, for her assistance with the ICP-OES analysis. We thank Dr. Cyril Aubry from the Electron Microscopy Facility, Khalifa University, for performing the TEM analysis. We are also thankful for the earlier collaboration we had with Prof. Rashid Abu Al Rub from Khalifa University, which has previously led to the development of TPMS spacers. This work is supported by Khalifa University of Science and Technology , Abu Dhabi, UAE, through the Center for Membrane and Advanced Water Technology (CMAT) , Abu Dhabi, UAE, under Award No. RC2-2018-009. Funding Information: We thank Dr. Reza Rowshan and Dr. Oraib Al-Ketan for their valuable assistance in preparing STL files for 3D printing. The TPMS spacers were printed using the Core Technology Platform resources at NYU Abu Dhabi. We thank Khulood Alawadi for her assistance in 3D printing. We thank Botagoz Zhuman from CMAT, Khalifa University, for her assistance with the ICP-OES analysis. We thank Dr. Cyril Aubry from the Electron Microscopy Facility, Khalifa University, for performing the TEM analysis. We are also thankful for the earlier collaboration we had with Prof. Rashid Abu Al Rub from Khalifa University, which has previously led to the development of TPMS spacers. This work is supported by Khalifa University of Science and Technology, Abu Dhabi, UAE, through the Center for Membrane and Advanced Water Technology (CMAT), Abu Dhabi, UAE, under Award No. RC2-2018-009. Publisher Copyright: {\textcopyright} 2021 Elsevier B.V.",
year = "2022",
month = jan,
doi = "10.1016/j.apcatb.2021.120318",
language = "British English",
volume = "300",
journal = "Applied Catalysis B: Environmental",
issn = "0926-3373",
publisher = "Elsevier B.V.",
}
