High-efficiency river water treatment via pilot-scale low-pressure hybrid membrane photocatalytic reactor (MPR) utilizing ZnO-Kaolin photocatalyst

Mohamad Alif Hakimi, Hamdan and Rais Hanizam, Madon and Nur Hanis Hayati, Hairom and Siti Nurfatin Nadhirah, Mohd Makhtar and Mohd Khairul, Ahmad and Noor Kamalia, Abd Hamed and Zarizi, Awang and Dilaeleyana, Abu Bakar Sidik and Siti Solehah, Ahmad Norrahma and Rais Mohd Hazri, Madon and Herma Dina, Setiabudi (2024) High-efficiency river water treatment via pilot-scale low-pressure hybrid membrane photocatalytic reactor (MPR) utilizing ZnO-Kaolin photocatalyst. Journal of Water Process Engineering, 68 (106543). pp. 1-18. ISSN 2214-7144. (Published)

Preview	Pdf High-efficiency river water treatment via pilot-scale low-pressure hybrid_ABST.pdf Download (256kB) | Preview
	Pdf High-efficiency river water treatment via pilot-scale low-pressure hybrid.pdf Restricted to Repository staff only Download (11MB) | Request a copy

Abstract

River pollution poses a significant threat to ecosystems and human health, underscoring the need for effective and scalable treatment methods. A recent pilot-scale study has refined a hybrid membrane photocatalytic reactor (MPR) incorporating ZnO-Kaolin photocatalyst to treat Sembrong river water. The ZnO-Kaolin was characterized using multiple analytical techniques. X-ray diffraction (XRD) confirmed the wurtzite phase of ZnO and the anorthic structure of kaolinite, with a crystallite size of 40 nm. Fourier transform infrared spectroscopy (FTIR) revealed Zn O stretching vibrations alongside the characteristic Si-O-Al and Si-O-Si bonds of kaolin. Field emission scanning electron microscopy (FESEM) demonstrated a uniform distribution of 50 nm ZnO nanoparticles on the kaolin surface, while optical band gap analysis showed a value of 3.25 eV, indicating favorable photocatalytic activity for ZnO-Kaolin. Optimal conditions for pollutant removal were established, with a photocatalyst loading of 0.05 g/L of ZnO-Kaolin, a membrane pressure of 0.5 bars, and 225 watts of UV light leading to significant pollutants removal, 86 % for ammoniacal nitrogen, 92 % for chemical oxygen demand (COD), 85 % for biochemical oxygen demand (BOD), and 99 % for suspended solids. The hybrid system also reduced flux decline by 18 %, improving ultrafiltration membrane efficiency. Additionally, the pH and dissolved oxygen of the treated water increased to 6.0 and 6.3 mg/L, respectively, elevating the Water Quality Index (WQI) to 87.17, corresponding with Class II standards. These results suggest that the hybrid MPR could be an effective option for sustainable large-scale river water treatment.

Item Type:	Article
Uncontrolled Keywords:	River water; Polluted; Membrane; Photocatalytic; Pilot scale
Subjects:	T Technology > TD Environmental technology. Sanitary engineering T Technology > TP Chemical technology
Faculty/Division:	Faculty of Chemical and Process Engineering Technology
Depositing User:	Mrs Norsaini Abdul Samat
Date Deposited:	21 Nov 2024 04:11
Last Modified:	21 Nov 2024 04:11
URI:	http://umpir.ump.edu.my/id/eprint/42960
Download Statistic:	View Download Statistics

Actions (login required)

View Item