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INDONESIA
Jurnal Zeolit Indonesia
Published by Institut Teknologi Bandung
ISSN : -     EISSN : -     DOI : -
Core Subject : Education,
Education
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Articles 303 Documents
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HYDROLYSIS OF CLAY FROM CAPKALA WITH VARIATION OF CHLORIDE ACID CONCENTRATIONS Nelly Wahyuni; Imelda H. S.; Yateman Arryanto; Sutarno Sutarno; Ya' Zupriadi
Jurnal Zeolit Indonesia Vol. 7 No. 1 (2008): Vol. 7 No. 1 (2008)
Publisher : Institut Teknologi Bandung

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Hydrolysis of clay from Capkala with variation of chloride acid concentratios has been done. Hydrolysis of clay has been conducted by reacting clay in HCl with stirring during 24 hours. Hydrolysis was conducted in several variations of HCl concentration at room temperature. Hydrolyzed clay was characterized by the Atomic Absorption Spectophotometer, Infrared Spectophotometer, and X-ray Diffractometer. The analysis of Spectophotometer of Atomic Absorption was not showed the decreasing of aluminum content of hydrolized clay which is not the extrication of aluminum metal from clay structure. Infrared spectra from hydrolized clay was not showed the eliminated of absorption peak for Al-OH bonds in octahedral layer. Diffractograms of hydrolized clay was not showed the changing angle of 2θ but figuring the increase of intensity of diffraction peak which indicates discharge of pollutant metals from clay structure.
ADSORPTION OF Cu(II) ON ZEOLITE A SYNTHESIZED FROM COAL BOTTOM ASH OF PT. IPMOMI PAITON Nurul Faradilah Said; Nurul Widiastuti
Jurnal Zeolit Indonesia Vol. 7 No. 1 (2008): Vol. 7 No. 1 (2008)
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The study aimed to utilizing coal bottom-ash into zeolite A that was used as absorber metal ion of Cu(II). Zeolite A is made from bottom-ash using alkali fusion followed by hydrothermal processes. Melting temperature of Alkali conducted at 750°C during 12 h ours and hydrothermal processes at 100°C with molar ratio of SiO2/Al2O3 1,9. The result XRD showed that zeolite was formed is zeolite A. Product of Zeolite A was examined the ability of adsorption metal ions of Cu (II). In this test conducted several parameter variations that influences are period, concentration, pH, and temperature. The result showed that zeolite A can adsorbing Cu(II) up to 83,35% with the concentration of Cu(II) 50mg/l at pH 8 for 360 minutes. This study was learning some aspects of adsorption process were kinetic adsorption and isothermal adsorption. The result indicate that the kinetics adsorption of Cu(II) at zeolit A was following model of pseudo-first order, while isothermal adsorption is following model of Freundlich.
THE UTILIZATION OF ZEOLITE AS MATERIAL PRODUCTION OF BIOPESTICIDE ACTIVE NEMATODA STEINERNEMA SPP. WITH GRANULAR SHAPED Bambang Setyobudi; Wagiyana Wagiyana
Jurnal Zeolit Indonesia Vol. 7 No. 2 (2008): Vol. 7 No. 2 (2008)
Publisher : Institut Teknologi Bandung

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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 to maintain viability of Steinernema spp. until nine weeks. The formulas to produce granule biopesticide an effective until nine weeks is a combinations of mixture 50% up to 75% zeolite on vertisol.
SYNTHESIS AND CHARACTERIZATION OF COMPOSITE ZEOLITE-RESIN POLYMETHACRYLATE Yusuf Nampira
Jurnal Zeolit Indonesia Vol. 7 No. 2 (2008): Vol. 7 No. 2 (2008)
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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 obtained on the fraction of zeolite in the composite between the 46.67% of weight up to 70% of weight. Strength and hardness of zeolite-resin polymethacrylate depends on balance between zeolite and resin polymethacrylate. The optimum hardness of this composite reaches value of 29,7 N/ım2, which obtained from composite that have a fraction zeolite 46,67% of weight.
SYNTHESIS AND CHARACTERIZATION OF ZSM-5 MESOPOROUS WITH VARIATION RATIOS OF SiO2/Al2O3 Susi Nurul Khalifah; Didik Prasetyoko
Jurnal Zeolit Indonesia Vol. 7 No. 2 (2008): Vol. 7 No. 2 (2008)
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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
NPK FERTILIZER SLOW RELEASE WITH ZEOLITE AS ONE FILLER AT TEA GARDEN Pudjo Rahardjo
Jurnal Zeolit Indonesia Vol. 7 No. 2 (2008): Vol. 7 No. 2 (2008)
Publisher : Institut Teknologi Bandung

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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 N:P:K:Mg = 25:5:10:2 and 23:7:10:2 with doses of 400, 600, and 800 kg/ha/year applied on two times a year. Whereas, recommended doses is using a singular fertilizer of N= 300, P2O5 = 94, K2O = 180, MgO = 54 kg/ha/year, 4 applications/year. Dosage of 800 kg/ha/year of formula I and formula II was increasing treetops. Dosage of 400 kg/ha/year and 600 kg/ha/year giving lower treetops. It is compared with the control without fertilizer treatment was showed a significant increase (115 to 129%) in clones of tea 2025 in Tea Garden Canaan.
POTENCY OF ZEOLITE IN INDONESIA Kusdarto Kusdarto
Jurnal Zeolit Indonesia Vol. 7 No. 2 (2008): Vol. 7 No. 2 (2008)
Publisher : Institut Teknologi Bandung

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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 become zeolite. Geologically, Indonesia has big potential to produce zeolites such as those found in Lampung, West Java, Central Java, East Java, East Nusa Tenggara, and Sulawesi, with the estimate resources of 447,490,160 tons.
PROCESSING OF URANIUM WASTE USING ALUMINA SILICA PHOSPHATE Aisyah Aisyah; Herlan Martono; Wati Wati
Jurnal Zeolit Indonesia Vol. 7 No. 2 (2008): Vol. 7 No. 2 (2008)
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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 Phosphate (ASP) has been conducted. Simulation uranium waste with the concentration of 0,05 g/l was contacted to ASP with contact timer and pH as a parameters. The Alumina Silica Phosphate which saturated with uranium, later then immobilized with epoxy resin polymer by total of waste contents as a parameter. The immobilization was conducted by mixing ASP which saturated with uranium and epoxy resin. The study showed that the best composition of ASP was obtained at the ratio of 1:1, contact time of 15 minute, and pH of 7 with absorption of uranium about 93,5%. The characteristic of polymer and the immobilization waste showed that optimum of waste content is 20% of weight with the density of 1,0538 g/cm3; compressive strength of 19,96 kN/cm2 and there was not detected the leaching of uranium which out from the polymer-waste. Therefore, ASP can be used on processing of uranium waste and could be suggested to be applied on Radioactive Waste Management Installation.
Application of Zeolite as Carrier for Humic Acid for Increasing Food Crops Production Suwardi Suwardi; Evi Mutiara Dewi; Bagus Ahmad Hermawan
Jurnal Zeolit Indonesia Vol. 8 No. 1 (2009): Vol. 8 No. 1 (2009)
Publisher : Institut Teknologi Bandung

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Soils in Indonesia are mostly classified as Ultisol having physico-chemical properties such as low pH, low organic matter and very low in nutrients. As a result, the agricultural production on land is very low. Today the use of chemical fertilizers without addition of organic matter to cause a decline in soil organic matter content, soil physical properties become increasingly hard due to structural damage and no development of most soil microorganisms. In such conditions, the soil becomes no more responsive to fertilization so that agricultural production including food crops is leveling of. Therefore, efforts to overcome the barriers of soil properties to increase production of food crops must be done. Recently busy talking people active ingredients that can increase agricultural production spectacular. The material is humic acid extracted from organic materials. The result of this study showed that application of 10 liter/ha humic acid to the soils through zeolite as carrier increased the production of paddy by 15% and corn by 10%. The increase of crop production is due to the development of root then stimulating the absorption of nutrients
TECHNIQUE OF ZEOLITE APPLICATION ON AGRICULTURAL AS A SOIL AMELIORANT Suwardi Suwardi
Jurnal Zeolit Indonesia Vol. 8 No. 1 (2009): Vol. 8 No. 1 (2009)
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Indonesia is one of countries which is rich in zeolite deposits. Volcanic activities in this country millions years ago released much of volcanic tuff as source of zeolite materials. The most important of zeolite characteristics are high cation exchange capacity (CEC), capability to absorb ammonium ions, and their unique porous structures. Those characteristics can be used for many utilities of zeolite for agriculture such as soil ameliorant, slow release agent of nitrogen fertilizer, and growth media of horticultural plants. Application of zeolite as soil ameliorant gave good effect if applied in low CEC soil such as Oxisol, Ultisol, and some Inceptisol with high dossage of 10-15 ton/ha. Although zeolites improved the soil characteristics and crop production, only a few farmers used zeolites due to economical reasons. Therefore, other techniques should be developed for stimulating farmers to use zeolites. Application of zeolite with lower dosage can be mixed directly with urea in ratio of 1:1 or 30% if the mixtures are pelletized. Zeolite can be applied in company with other soil ameliorants such as compost, liming, and humic acid.

Page 28 of 31 | Total Record : 303

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