Vol. 5 No. 2 (2006)

Effect of zeolites-spread litters on broiler performances under different floor spaces had been performed in five weeks. As many as 324 chicks of a day-old Hubbard strain were fed rations contained 3,000 "“ 3,100 Kcal/Kg ME and 21% crude protein during starter period and fed the ratio contained 20% crude protein with similar energy during finisher period. The chicks were randomly allocated to three different floor spaces (10, 12, and 14 heads/m2) and three different zeolites spread litters (0.0, 2.5, and 5.0 kg zeolites/m2) under completely randomized design with factor 3 x 3 and 3…

Nowdays, mining and energy are still as important sectors for contributing state economics. However, mining activitis usually make environmental problems because most of mining use open pit mining technique that causing the change for the landscape comprising topography, cover vegetation, hydrology pattern, and distruction of soils. In the consequence, the ecosystem of mining area and its surrounding will disturb. The disturbances will more clear if the overburden containing unstable minerals in oxidize condition (such as pyrite and chalcopyrite) release acid mine drained that disturbing…

Nowadays, ceramics world has been developing into what the interior, building exterior, industries and household. The quality and its ability made by certain specification which compatible with the structure, design and the function. For example, the building structure that usually has high humidity whether indoor or outdoor will need certain ceramics for the floor to keep on dry condition, unslippery, clean while fungus will not live. For that purpose stone ceramics that made by natural zeolite will has same characters as natural zeolite function such us absorb/release water reversibly,…

The research about bleaching of crude palm oil by adsorption method with using natural zeolite from Lampung has been done. The experiment result shows that natural zeolite from Lampung can be used as adsorbent for bleaching process of crude palm oil. Zeolite had been activated by chemical method with hydrochloric acid (HCl) solution before it was used as adsorbent. From the experiment result, we know that the best condition for bleaching process are weight percentage of zeolite that was used to get the highest of transmittance is 20% and the best concentration of HCl solution is 4%. The…

An identification of framework mineral structure of natural zeolit Bayah, Lampung and Malang was carried out by Reitveld methods. X ray diffraction intensity of Natural zeolit was measured by an X-Ray Diffractometer (XRD). The refinement of Clinoptilolite and Mordenite phases have been carried out and the results of refinement show that in Bayah and Lampung were Clinoptilolite phase ( space group C2/m No.12, Bravais lattice is Base-Centered and crystal system is monoclinic) and lattice parameter are a = 17,69(2) Ã…, b = 17,92(1) Ã… dan c = 7,422(9) Ã… respectively (Bayah zeolite) and a =…

The requirement of fuel increases without balancing with its production causing the oil resources from fuel will immediately finished. Therefore, palm oil as renewable energy resources is selected for fuel production especially gasoline. Catalitic cracking process by using ZSM-5/Alumina catalys is selected in this research. The reaction was conducted in a simple fixed bed reactor with the pressure of 1.5 atm during half hour and WHSV 1,8 h-1 dan 2,4 h-1. The reaction result product then analyzed by using GC-FID for identify the gasoline fraction obtained, and FT-IR for identify the bonding…