Pertukaran ion antara Cr3+ dan H+ menggunakan zeolit sebagai penukar ion adalah salah satu metode untuk memurnikan air dari ion kromium. Zeolit adalah senyawa aluminosilikat tetrahedral dengan struktur ikatan 3-dimesi, memiliki pori bagian dalam, dan…
Effects of agitation and aeration on spore production and spore viability by biocontrol agent UPM 29 were investigated. The optimum fermentation at different agitation speeds, ranging from 300 rpm to 700 rpm show that there is an optimum agitation…
The analysis of heavy metals Pb and Cd concentrations in fish and oyster have been carried out by atomic absorption spectrophotometer (AAS) method. The wet digestion method was used for preparation sample prior to AAS detection. Sample was collected…
Two frequently used methods in atmospheric dispersion modeling (ADMS and CFD) were compared in this study to predict pit retention within an open quarry. Conventional Gaussian plume models developed by CERC, ADMS 3 and ADMS 4, were used to predict…
One of the most promising materials for storing hydrogen in solid state would be included in metal-carbon composites. In order to obtain nanocrystalline metal particles encapsulated by crystalline or amorphous carbon, mechanosynthesis of…
This research aims to investigate the effect of dye adsorption into TiO2 layer in dye sensitized solar cell (DSSC), which the TiO2 layer is formed by slip casting and electrophoresis methods. Adsorption process of the dye into the cavities of the…
Drying method is one of techniques used in food preservation. This method usually means reducing water content which is the best contiditon for microorganism growth. Higher water content also causes some enzyms needed for food decomposition cannot…
The objective of this research is to determine strength rate of Damar Batu/Balau (Shorea spp.), Kempas (Kompassia malaccensis), and Durian (Durio spp.) before and after extraction. For this purpose, three solvents were used in sequence to extract the…
Starch is modified for three reasons. First, modified starch provides functional attributes in food applications that native starches normally cannot provide. Second, starch is abundant and readily available. Third, starch can provide an economic…
Bahan bakar minyak merupakan sumber energi terpenting untuk kehidupan manusia. Produksi bahan bakar minyak yang berasal dari bahan bakar fosil semakin hari semakin menurun. Untuk itu diperlukan suatu alternatif sumber energi yang dapat diperbaharui…