Vol. 7 No. 2 (2008)

Uranium waste generated from the utilization of nuclear technology on radioisotope production, nuclear fuel production, calibration of fuel post-irradiation, and the purification of uranium from yellow cake. Uranium is a long-lived radionuclides and hazardous if it was entered in human body, thus requiring appropriate treatment with high safety. The processing conducted by separated the uranium which was contained on waste with ions exchange process. Uranium has been separated, later then immobilized with the polymer. The study of simulation uranium waste processing using an Alumina Silica…

Zeolite is one of non-metallic minerals or multi-use industrial minerals due to its physical and chemical characteristic as an absorbent, ion exchange, molecular filters and as a catalyst. Minerals in zeolite group are generally found in tufa rocks formed from volcanic-ash sediments resulting from alteration, diagenesis, and hydrothermal processes. Indonesia is laid in the volcanic series from Sumatra, Java, Nusa Tenggara, until Sulawesi Islands. One of the products of volcanic tuff wide spreading form the volcano, partially or wholly have undergone a process of alteration or diagenesis to…

Composite of Zeolite-resin polymethacrylate have been made with various compositions of zeolite on composite. The composite were made by homogenous mixture of zeolite powder with powder of tetrahidro furfuryl methacrylate, methacrylate polymerization which was conducted by pasta phases with mixing 1 ml mixture solution of tetrahidro furfuryl methacrylate and hydroxy propyl methacrylate. A big part of zeolite in product composite was in the polymer solution phase. The balance between supporting material and matrix material around the zeolite on composite of zeolite-resin polymethacrylate…

ZSM-5 Mesoporous with variation ratios of SiO2/Al2O3 20, 35, 50, and 100 have been successfully synthesized. Phase of mesoporous created using Cetyltrimethylammonium bromide (CTABr) templates. Crystal obtained has an acidity and higher thermal stability. Diffraction peaks typical of ZSM-5 appeared at 2θ = 7-9 ° and 2 θ = 23.02 °, while typical peak of mesoporous materi als appeared on 2θ

The fertilizer is one of factors production besides land, water, seed, and cultivation technology. Without giving fertilizer which suitable with recommendation the needs of the plants to fulfill nutrient balance, potential product or potential of plant genetics will not be achieved. Proper fertilizer is giving fertilizer with exactly type, right dosage, correct method and time, and effectively to increase productivity, and economics efficiency. This is contained in slow release fertilizer which wearing zeolite filler. NPK fertilizer slow release using zeolite as one of filler with ratio of…

The study about biopesticide granular shaped has been conducted by utilizing zeolite and vertisol. Both materials are used as media that functions to storage Steinernema. The purpose of this study was to find method and formulas to produce biopesticide active nematodes with granular shaped that have high viability and effectiveness and can last long live. The result showed that drop method on combination of zeolite and vertisol material produce granule with ± 8 mm diameter and weight of ± 0.3 g. Biopesticide on granule shape that mixture result of zeolite, vertisol, and Steinernema spp. able…