Polyurethane (PU) membranes was prepared by reacting the free fatty acids and fatty acids that have been oxidazed from castor oil with a 2,4-toluen di-isocyanate (TDI). He effect of of monomer composition, temperature, and polymerization time was…
Ethanol is one of fermentation products which are mostly used as solvent in pharmaceutical and chemical industries. Ethanol production by fermentation generally uses yeast from Saccharomyces and Schizosaccharomyces. The fermentation of ethanol by…
Laser-Induced Breakdown Spectroscopy (LIBS) is a technique that used for quantitative elemental analysis of various samples in different forms. In this technique, a laser light is focused on the surface of sample yielding a plasma just above the…
Kolom gelembung pancaran merupakan salah satu alat perpindahan massa antara fasa gas dan cair. Penelitian ini bermaksud untuk mempelajari pengaruh nozzle terhadap aspek hidrodinamika antara lain: kedalaman penetrasi gelembung (Z), holdup gas (eg),…
Physico-chemistry and biological data were investigated from October 2010 until April 2011 of Jatiluhur reservoir. A total of six sampling stations were selected for this study. The discharge and hidrological data were obtained from Perum Jasa…
Telah dilakukan penelitian pembuatan membran komposit khitosan-PVP (polivinil pirolidon) berikatan silang dengan variasi komposisi. Khitosan yang digunakan adalah hasil deasetilasi khitin dari kulit udang. Pembuatan membran komposit khitosan…
The study is to model emission from a stack to estimate ground level concentration from a palm oil mill. The case study is a mill located in Kuala Langat, Selangor. Emission source is from boilers stacks. The exercise determines the estimate the…
Penelitian pengolahan air berwarna berdasarkan proses koagulasi dan ultrafiltrasi dengan membran poliakrilonitril (PAN) telah dilakukan. Studi ini bertujuan untuk membuat dan mengevaluasi karakteristik membran PAN untuk aplikasi pada pengolahan air…
Penelitian tentang modifikasi bentonit dari Kuala Dewa, Aceh Utara menjadi bentonit terpilar alumina dan uji aktivitasnya pada reaksi dehidrasi etanol, 1-propanol dan 2-propanol telah dilakukan. Bentonit alam (Ca-bentonit) dimodifikasi melalui proses…
Experimental and modeling studies have been conducted on a CO2 absorption in a cyclone scrubber operated at room temperature. The effects of parameters such as the initial concentration of alkali in the solution and the liquid – gas ratio on the CO2…