Novel Multi-Channel Coated Silica Based Membranes Applied for Peat Water Ultrafiltration

Abstract

South Kalimantan-Indonesia is in the Southern part of Borneo which almost half of the population lives in remote areas. Geographically, people are isolated and have poor access to electricity as well as a clean water supply. It is very essential to ensure the availability of clean water produced from peat water to overcome future water shortages. This work performs the fabrication of multi-channel silica-based membranes applied for peat water ultrafiltration which is demonstrated under various transmembrane pressure (TMP) and top layer types. The silica based top layer membranes were fabricated from three different sources (silica-pectin, organosilica, and pure silica) via dipcoating method onto macroporous multi-channel alumina support (4 bore). Peat water was treated by multi-channel membranes through ultrafiltration process through cross flow system. According to the results, all multiples top layer pore size were obtained with range from 2.1 to 6 nm classified as mesoporous membranes. This process exhibited a promising outcome for removal natural organic matter (NOM) about 89-71% (UV254 rejection) at TMP 1-3 bar, respectively. Besides that, normalized permeate fluxes of that membrane excellently stable over 180 min operation time. It is concluded that silica based multichannel membranes are either compatible to treat peat water that has high number of NOM as well as excellent to overcome membrane fouling.

Functionalization and Deconvolution of Tubular Ceramic Support Membrane Prepare from High Silica Spent Bleaching Earth by Centrifugal Casting

“…Silica is an interesting material to apply for inorganic membrane fabrication, due to it provides excellent molecular sieving, formidable, withstanding to extreme temperatures and chemicals, and less fouling than polymer-based membranes [7][8][9][10][11][12][13]. However, silica membranes also have the main disadvantage of having low stability when in contact with water [14][15][16][17][18][19][20]. A membrane is defined as a sheet, film, or thin layer, which serves as a selective barrier between two phases which can be a fluid such as liquid, gas, or vapor [21][22][23].…”