Palm fly ash is biomass/waste in the palm oil industry. Palm fly ash has high content of amorphous silica. ZSM-5 is one of synthetic zeolite which is widely used as catalyst in industries. ZSM-5 has high activity and selectivity to several…
The possibility of utilizing residual forest biomass to produce valuable chemicals was investigated. An outer layer of a bark of Hinoki (Chamaecyparis obutusa) tree, a Japanese cypress, was used as a sample material. Experiments were carried out in a…
This research was aimed to investigate the antioxidant activity of purple sweet potato leaves cultivated in Saree, Aceh Besar. The study was conducted in two stages. The first stage included sampel preparation, phytochemical test, λ max…
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…
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…
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…
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…
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…
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…
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…