Open AccessThe Effects of Magnesium Hydroxide (Mg(OH)2) on the Characteristics and Performance of Polyethersulfone Membranes (PES) for Water Treatment
Author(s) -
Umi Fathanah,
Izarul Machdar,
Medyan Riza,
Nasrul Arahman,
Mirna Rahmah Lubis,
F Nurfajrina,
A Yolanda,
Mukramah Yusuf Wahab
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/845/1/012024
Subject(s) - membrane , contact angle , ultrafiltration (renal) , fourier transform infrared spectroscopy , hydroxide , scanning electron microscope , chemical engineering , materials science , chemistry , humic acid , water treatment , magnesium , nuclear chemistry , chromatography , inorganic chemistry , composite material , environmental engineering , organic chemistry , fertilizer , biochemistry , engineering
Surface water is commonly used as a source of clean water, but increasingly, surface water is contaminated with various foulants. Humic acids (HAs) are a natural organic matter predominant in ground and surface waters. HAs can reduce the quality of water. This study aims to investigate the results adding magnesium hydroxide, or Mg(OH) 2 , to modify polyethersulfone (PES) membranes by determining the characteristics and performance of the membranes. The mixed-matrix membranes were prepared using PES and various amounts of modified Mg(OH) 2 (0%, 1%, and 1.5% wt) as nanoparticle additives. A scanning electron microscope (SEM), Fourier-transform infrared spectroscopy (FTIR), and water contact-angle analysis were used to characterize the membranes, followed by a membrane performance test (flux, permeability, and selectivity of the membrane) using a dead end ultrafiltration module. It can be concluded that Mg(OH) 2 can improve the hydrophilicity of PES membrane with decreasing the water contact angle from 84.2° (pure PES membrane) to 68° (modified membrane), where ultrafiltration membranes with the highest permeability coefficient are obtained at 1.5% wt of Mg(OH) 2 with a value of 41.94 L/m 2 .h.bar and a rejection percentage of 67.72%.