E FFECT O F BENTONITE - AMINOPROP Y LTRIMETHOXYSILANE (BNT - APS) CONCENTRATION I N POLYVINYLIDEN E FLUORIDE BNT - APS (PVDF /BNT - APS ) COMPOSITE M EMBRANE O N DYES FILTRATION

• Main Author: ALFIANSYAH NIM : 10514046, RIFKI
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/30469
• Institution: Institut Teknologi Bandung

Polyvinylidene fluoride (PVDF) has <br /> <br /> been widely used in water treatment applications. The <br /> <br /> hydrophobic <br /> <br /> ity of <br /> <br /> PVDF <br /> <br /> membrane leads <br /> <br /> to <br /> <br /> membrane <br /> <br /> fouling. <br /> <br /> PVDF membrane <br /> <br /> can be <br /> <br /> modified <br /> <br /> by <br /> <br /> preparing <br /> <br /> composite membrane <br /> <br /> by <br /> <br /> the addition of clay. In this st <br /> <br /> udy, the PVDF <br /> <br /> membranes modified <br /> <br /> by adding ben <br /> <br /> tonite clay (BNT) <br /> <br /> and <br /> <br /> aminopropyl trimet <br /> <br /> h <br /> <br /> oksisilan <br /> <br /> e <br /> <br /> (APS) <br /> <br /> to <br /> <br /> p <br /> <br /> roduce PVDF <br /> <br /> /BNT <br /> <br /> - <br /> <br /> APS <br /> <br /> composite membrane <br /> <br /> . <br /> <br /> The composite membrane <br /> <br /> s were <br /> <br /> made by the phase inversion technique and the <br /> <br /> concentration of <br /> <br /> B <br /> <br /> NT <br /> <br /> - <br /> <br /> APS were used between <br /> <br /> 0.25% and 1% (w/w). <br /> <br /> This study inves <br /> <br /> tigated <br /> <br /> the <br /> <br /> effect of BNT <br /> <br /> - <br /> <br /> APS <br /> <br /> consentration <br /> <br /> on the <br /> <br /> performance of <br /> <br /> the resulting <br /> <br /> composite membranes <br /> <br /> during the <br /> <br /> dye <br /> <br /> s <br /> <br /> filtration <br /> <br /> . <br /> <br /> The <br /> <br /> resulting <br /> <br /> membranes were <br /> <br /> characterized by ATR <br /> <br /> - <br /> <br /> FTIR, mechanical properties, membrane morphology <br /> <br /> by Scanning Electron Microscope (SEM), h <br /> <br /> ydroph <br /> <br /> ili <br /> <br /> city <br /> <br /> , porosity and the performance of <br /> <br /> membrane <br /> <br /> permeability and selectivity of <br /> <br /> reactive orange <br /> <br /> ‘13 <br /> <br /> and rhodamine B <br /> <br /> solution <br /> <br /> . The <br /> <br /> results <br /> <br /> showed that the increasing composition of BNT <br /> <br /> - <br /> <br /> APS on membrane <br /> <br /> produced <br /> <br /> a <br /> <br /> decrease <br /> <br /> d <br /> <br /> in contact angle towards <br /> <br /> water. <br /> <br /> Mechanical properties of <br /> <br /> the <br /> <br /> membrane increased <br /> <br /> with the additi <br /> <br /> on of BNT <br /> <br /> - <br /> <br /> APS 0.25% and 0.5% (w/ <br /> <br /> w), but <br /> <br /> decreased at <br /> <br /> 0.75% and 1.00% <br /> <br /> (w/ <br /> <br /> w). T <br /> <br /> he SEM <br /> <br /> image showed <br /> <br /> that the membrane is asymmetric <br /> <br /> . The experimental results <br /> <br /> show <br /> <br /> ed <br /> <br /> that the addition of <br /> <br /> BNT <br /> <br /> - <br /> <br /> APS <br /> <br /> concentrati <br /> <br /> on of 0.25% (w/w) increase <br /> <br /> the <br /> <br /> water flux <br /> <br /> membrane <br /> <br /> , <br /> <br /> but decrease <br /> <br /> d <br /> <br /> with addition <br /> <br /> the <br /> <br /> composition of <br /> <br /> BNT <br /> <br /> - <br /> <br /> APS. The same trend <br /> <br /> occurred <br /> <br /> with the data rejection of <br /> <br /> reactive orange <br /> <br /> ’13 <br /> <br /> and rhodamine B. From the data <br /> <br /> , <br /> <br /> it is <br /> <br /> concluded that the optimal permeability and sel <br /> <br /> ectivity for reactive orange ‘13 and r <br /> <br /> hodamine <br /> <br /> B resulted <br /> <br /> in a composite membrane with a composition of BNT <br /> <br /> - <br /> <br /> APS <br /> <br /> , <br /> <br /> 0.25% and <br /> <br /> 0, <br /> <br /> 5% (w/ <br /> <br /> w) <br /> <br /> respectively <br />