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INDONESIA
Jurnal Zeolit Indonesia
Published by Institut Teknologi Bandung
ISSN : -     EISSN : -     DOI : -
Core Subject : Education,
Education
Arjuna Subject : -
Articles 303 Documents
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THE PATTERN OF NITROGEN RELEASE FROM SLOW RELEASE FERTILIZER UREA-ZEOLITEHUMIC ACID Ganda Darmono Nainggolan; Suwardi Suwardi; Darmawan Darmawan
Jurnal Zeolit Indonesia Vol. 8 No. 2 (2009)
Publisher : Jurnal Zeolit Indonesia

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Abstract

Nitrogen is essential nutrient for plants, deficiency of nutrient causes plants could not growth normally. Nitrogen is easily lost from soil so to reduce his lost by forming fertilizers available in slow form (slow release). Some materials can be used to create a slow release of which having high cation exchange capacity (CEC). Zeolite and humic acid are materials which have a highest CEC so it make possible to use as a slow release materials. The study aimed to determine the rate and pattern of nitrogen release from mixture formulas Slow Release Fertilizer (SRF) and urea-zeolite and humic-acid (UZA) and comparing rate of nitrogen release with urea pril. The study conducted in laboratory with incubation experiment during 14th weeks. Determination ammonium and nitrate was conducted by extracting the soil with extractant hydrodistillation 0.1 N HCl + 1 N KCl. The result showed that a higher humic acid concentration was given on fertilizer causes a nitrogen release become ammonium and nitrate more slowly. SRF H5 (urea:zeolit, 70%:30% with humic acid of 5%) have a slowest nitrogen release rate rather than five types of Slow Release Fertilizer (SRF) formulas which containing a humic acid. However, SRF H1 and H3 fertilizer (with humic acid of 1% and 3%) have a most efficiency nitrogen release rate rather than five types of Slow Release Fertilizer (SRF) which is containing a humid acid.
MODIFICATION OF NATURAL ZEOLITE AS MOLECULAR SIEVE MATERIAL ON BIOETHANOL DEHYDRATION Khaidir Khaidir; Dwi Setyaningsih; Hery Haerudin
Jurnal Zeolit Indonesia Vol. 8 No. 2 (2009)
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This study aimed to find a method of modification zeolite structure so it has a fit pore size to used on bioethanol dehydration process and acquiring bioethanol quality for fuel. The method used by heating the mixture of ethanol azeotropic and water at distillation flask which passed through on the column filled by zeolite molecular sieve. The result showed that zeolite modifications (ZMS) have a better characteristic for used on bioethanol dehydration process than natural zeolite. The result which obtained on dehydration process using ZMS was better rather than commercial zeolite 3 A and natural zeolite. Concentration of bioethanol obtained by using ZMS has increased 3,14%.
STANDARDIZATION OF ZEOLITE MINERAL FOR QUALITY CONTROL Astiana Sastiono
Jurnal Zeolit Indonesia Vol. 1 No. 1 (2002): Vol. 1 No. 1 (2002)
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Abstract

Zeolite minerals in the past 20 years have been used n many aspect of agriculture, industry and environmental protection. Application of zeolites commercially depends on one or more of their physical and chemical characteristics. Natural zeolites are obtained as tuff rocks together with other minerals with the variation in their composition. Separation of the mineral is very difficult with any chemical process. In order to guarantee the quality of natural zeolites as a commercial product, we need to establish national standard of zeolites. Properties of zeolite such as particle size, mineral compositions, chemical properties and other properties need to be standardized.
NATURAL ZEOLITES STANDARDIZATION AS THE COMMODITY TOWARDS QUALITY ASSURANCE FOR ITS INDUSTRIAL USAGES Muta’alim Muta’alim
Jurnal Zeolit Indonesia Vol. 1 No. 1 (2002): Vol. 1 No. 1 (2002)
Publisher : Institut Teknologi Bandung

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Abstract

The quality of zeolite deposits at some locations are not the same, whereas in its utilizations, such as the utilization for the fertilizer carriers, the standard quality of zeolite should be fulfilled, for instances the cation exchange capacity should have a minimum value of 120 meq/100 gram, particle size should be "“10, +48 mesh, the zeolite grade was 50% of the tuff, and the moisture content was 8% in which its referred to the SNI 13-4696-1998, and that for the fowl and cattle food additives, the standard quality of the cation exchange capacity should be minimum value of 160meq/100gram, the particle size of "“28,+100 mesh, the zeolite grade 50%, and the moisture content of 5% which is related to SNI 13-4897-1998. Nowadays, there is not all zeolites for the industry utilizations have the standard yet, whereas the each of zeolite used should reach the quality standards. The process to attain the technical specification properties of the standard quality used for the commodity is called standardization. Standardization aspects include the procedures, the technology used, the environmental aspects, and the examinations used to be accurate and accredited. Based on the standard of the technical specifications, zeolites used will then be as commodities with assured qualities.
PROSPECT OF ZEOLITE APPLICATION IN AGRICULTURE Suwardi Suwardi
Jurnal Zeolit Indonesia Vol. 1 No. 1 (2002): Vol. 1 No. 1 (2002)
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Although zeolites have been known since the 50
APPLICATION OF ZEOLITE IN INDUSTRIES AND ENVIRONMENTS Thamzil Las; Husen Zamroni
Jurnal Zeolit Indonesia Vol. 1 No. 1 (2002): Vol. 1 No. 1 (2002)
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Abstract

Zeolites are crystalline, hydrates of alumino-silicate mineral with a three-dimensional framework structure which are occured in Indonesia as large deposits in the form of near-pure minerals and of low cost. In recent years, many scientist have focused their research to develop these minerals to be used in science and technology applications. Because of their unique crystal structure, zeolites have the importance properties of sorption, ion-exchange, molecular sieving and catalysis, which enable to them to be used in various industrial processes, waste management and environmental pollution problems. This paper describes the prospect of clinoptilolite and mordenite, which have been investigated in many laboratories, to be considered for their utilization in the industries and environmental management.
INDONESIAN NATURAL ZEOLITES MARKETING Toni Toha Apandi
Jurnal Zeolit Indonesia Vol. 1 No. 1 (2002): Vol. 1 No. 1 (2002)
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Natural zeolites have been known and studied in Indonesia since the 1980
Prospects of Natural Zeolites in Indonesia for Industrial Separations and Environmental Management Yateman Arryanto; Siti Amini; Max G. Q. Lu
Jurnal Zeolit Indonesia Vol. 1 No. 1 (2002): Vol. 1 No. 1 (2002)
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Zeolite as well as molecular sieves are a class of aluminosilicate materials, which have found wide use in industries for separation, purification and pollution control. In the new era of nanomaterials in the 21st century, these nanoporous materials have become more widely used in separation, catalysis and environmental management, even in microelectronic and energy storage sectors. The following briefly shows the great potential of natural zeolites for some important environmental applications: CO2 removal from landfill gas and coal seam gas using Pressure Swing Adsorption (PSA) with Clinoptilolites: Natural zeolite is not only a cheaper solution to the economical storage system of methane for NGVs but it also present a safer storage medium as alternative adsorbent such activated carbon is flammable and very costly. There is also an increasing interest in indoor air quality control issues among the building industries and health organizations. It has been demonstrated that clinoptilolite is particularly effective adsorbent for odours and some volatiles in indoor environment. Another area of importantnce of natural zeolites is the solar energy application. Zeolites can adsorb water vapour and create effective cooling with solar heat as the energy to regenerate the zeolite. Systems using zeolites can be designed in such a way that combined cooling and heating can be achieved at about 40-60% efficiency. Adsorption of Nitrogen and Oxygen in zeolites for PSA application Cp zeolite deposit has about 75% of the capacity of a commercial Mordenite zeolite for air separation at 30°C. The dynamics studies showed that Cp zeolite is suitable for N2 and O2 separation due to their large difference in adsorption kinetics.
EFFECT OF ZEOLITE ON HEAVY METALS AND DISSOLVED CHEMICAL SUBSTANCES IN THE WATER: CASE STUDY OF STUDENT NEIGHBORHOOD AREA IN DARMAGA, WEST JAVA Dwita Siallagan; Suwardi Suwardi
Jurnal Zeolit Indonesia Vol. 2 No. 1 (2003): Vol. 2 No. 1 (2003)
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Bad sanitation environment on student neighborhood area causes the decreasing of ground water quality, whereas the ground water is the main water source of that area. Physical, chemical, and biological parameters showed that the ground water which consumed are contaminated by organic matters from safety tank, ground particles and heavy metal (Fe and Mn). Fe and Mn rates on the well water are 0,0066-0,1657 mg/l dan 0,035-0,072 mg/l. While Fe and Mn ratea on waste water are 0,2193-0,7102 mg/l dan 1,90-4,70 mg/l. Dissolve solid suspention rate on the ground water and domestic waste water are 0,0066-0,1657 mg/l dan 0,035-0,072 mg/l respectively. Chemically, it was below the permitted limit 0,3 mg/l and 0,1 mg/l, but physically the ground water looks coloured, tested and smell. These may be caused by littering and too crowded neighborhood and organic matter intrusion to the well. One of the alternative to decrease the metal rate and dissolve solid suspention on water ground is using zeolite. Ground water analysis showed that zeolite can decreases the Fe and Mn rates from 0,92 ppm to 0,07 ppm and from 0,34 ppm to 0,048 ppm (around 85-90 %).
PRESERVATION OF HOT CHILI WITH ACTIVATED NATURAL ZEOLITE Dewi Fatimah; Lenny M. Estiaty
Jurnal Zeolit Indonesia Vol. 2 No. 1 (2003): Vol. 2 No. 1 (2003)
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Investigation has been done for chilli (keriting and hot beauty type) preservation using natural silicate (zeolite). Zeolite from Cikancra (mordenite and clinoptilolite type is prepared in various particle sizes and activated at different temperatures. The activated zeolite is tested for its ability to absorb water. It is found that zeolite with particle size of -100 +140 mesh and activated at 400ºC has the highest capability for water absorption. This zeolite is then used in the preservation tests. Zeolite can extend the preservation of chillies up to 18 days for

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