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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 7 Documents
 1 
Search results for , issue " Vol 3, No 1 (2004)" : 7 Documents clear
Synthesis of Artificial Zeolite from Coal Fly Ash by Alkali Treatments Triyatmo, Bambang
Jurnal Zeolit Indonesia Vol 3, No 1 (2004)
Publisher : Jurnal Zeolit Indonesia

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Abstract

Coal fly ash was treated with alkali (NaOH) water solution by heating up to about 100 oC for 12 and 24 hours. The coal fly ash used in this experiment was obtained from PLTU (Steam Power Electric Station) Suralaya, West Java, Indonesia. It was passed through a wire sieve with filter size of 46 mm. The NaOH solutions were reacted 0.5, 1.0, 1.5, 2.5, 3.5 and 4.5 M. The final products of the reactions were designated as ‘artificial zeolites’. Result of this experiment indicated that the cation exchange capacity (CEC) of ‘artificial zeolites’ were increased by increasing NaOH concentration up to 2,5 M. Higher CEC value of the 24 hours treated coal fly ash than that of the 12 hour treated ones. The CEC of ‘artificial zeolites’ increased by about 50 time for the coal fly ash. The XRD (X-ray Diffraction) pattern of the coal fly ash treated by 2,5 M NaOH which had highest CEC value were present new crystalline matters (possibility phillipsite) with sharp diffraction peaks at 2.7, 3.2, 3.3, 4.1, 5.1, 7.1 Å. The infrared (IR) spectrum of the ‘artificial zeolite’ exhibited the broad absorption band around 1,000 cm-1 and at about 3,500 cm-1. The analyzed ‘artificial zeolite’ showed steep descent around 100 oC in TG (Thermogravity), a small endothermic peak below 100 oC and a deep endothermic peak from 130 oC in DTA (Differential Thermal Analysis), representing presence of micropore structure of new zeolite species (probability phillipsite). The scanning electron micrograph of the ‘artificial zeolite’ showed spherical structure with chinks formed in the 2,5 M NaOH treatment.
Improvement of Cation Exchange Capacity of Natural Zeolite with Alkali Treatments Hanudin, Eko; Triyatmo, Bambang
Jurnal Zeolit Indonesia Vol 3, No 1 (2004)
Publisher : Jurnal Zeolit Indonesia

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Abstract

The natural zeolite was treated with alkali (NaOH) solution and heating at 100 oC for 12 and 24 hours. The natural zeolite was collected from Gunungkidul, Jogjakarta, Indonesia. The series of NaOH solutions was 0.5, 1.0, 1.5, 2.5, 3.5 and 4.5 M. The final product of the reaction (precipitate) was designated as ‘activated natural zeolite (ANZ)’. The cation exchange capacity (CEC) of the ANZ increased with increasing NaOH concentration up to 1.5-3.5 M. Treatment with NaOH 3.5 M and 12 hours in period of hydrothermal reaction resulted in a maximum CEC (395.6 cmol.kg-1). The maximum CEC also observed for treatment with NaOH 1,5 M, but consumed a longer time (24 hours). The increase in the CEC of the ANZ about 300 % higher than the original one. The XRD (X-ray Diffraction) peaks of the ANZ appear at 2.7, 3.2, 4.1, 5.1, 7.2 Å, this indicated a new crystalline matters (possibility phillipsite) present. Electron micrograph showed that the ANZ has a large cubic/prismatic structure with a perfect form.
EFFECT OF ZEOLITE ADDITION TO PLANT GROWTH MEDIA ON CANTALOUPE AND WATERMELON PLANTS IN HYDROPONIC SYSTEM Pangestu, M. Bagus; Suwardi, Suwardi; Widiatmaka, Widiatmaka
Jurnal Zeolit Indonesia Vol 3, No 1 (2004)
Publisher : Jurnal Zeolit Indonesia

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Abstract

The objectives of this research are to evaluate the effect of zeolite addition on watermelon and cantaloupe production and growing. The research carried out in green house of Bogor Agricultural University and the plant growth media (PGM) analysis carried out at Department of Soil Science, Faculty of Agriculture, Bogor Agricultural University. Single factor completely randomize design was used with four treatments and five repetitions. Plant growth media composition treatments effect the physical and chemical properties of PGM. The bulk density of PGM increase from from 0.22 to 0.56 g/cm3 and water holding capacity drop from 326.58 to 85.38 along with zeolite percentages added. The effects of zeolite on chemical characteristic of PGM is decreasing electrical conductivity rate before planting. PGM composition treatment did not positively effects on watermelon and cantaloupe growth, however there is an increasing on main stalk length and leaf quantity on cantaloupe. For watermelon, the increasing of growth parameter happened on 10% zeolite percentage. For fruit quality, PGM treatment positively effects on organoleptic test result 10% of zeolite giving the best result on the increasing of the average value of production and growth parameter.
APPLICATION OF ZEOLITE IN AGRICULTURE Sastiono, Astiana
Jurnal Zeolit Indonesia Vol 3, No 1 (2004)
Publisher : Jurnal Zeolit Indonesia

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Abstract

Chemical and physical characteristic of zeolite are use not only as nutrient absorber to increases fertilizer efficiency, but also as compost mixing for plant growth media or compost humidity regulator. This agriculture advantages specially to increases nitrogen fertilizer efficiency. Many efforts carried out to minimize ammonia lost from nitrogen fertilizer, one of the alternatives is using zeolite through the process of making slow release fertilizer. As a mineral with the high rate of cation exchange capacity, zeolite have the ability to absorb ammonium ion, so it will increases nitrogen fertilizer efficiency by mixing zeolite with fertilizer or spreading zeolite into the fields. Zeolite urea capsules use on paddy plant on several regions on West Java showing production increasing and nitrogen fertilizer efficiency increases. Zeolite use as vegetables plant media showing a quite well result. Furthermore zeolite reduces heavy metal take over from the food chain. With these results zeolite have a big role in increasing agriculture production.
EFFECT OF ZEOLITE ON EFFICIENCY OF P AND K FERTILIZERS IN THE PADDY FIELD Abdulrachman, Sarlan; Susanti, Zuziana
Jurnal Zeolit Indonesia Vol 3, No 1 (2004)
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Abstract

Zeolite generally have a very high exchange ion capacity and capability to catch ions. Therefore, zeolite is used on agriculture to reduce ion movement around the root zone and to increase the use of fertilizer by plant. A research have been established on 1999/2000 using zeolite from two sites that represent two type of soil, Planosol soil from Jakenan (Pati) and Podsolic soil from Tamanbogo (Lampung).Group randomize design with three repetition is used on this research. Fertilizer treatment on this research are 60-100 % P or K and 0-40% zeolite, 100% P or K + 200- 300% kg/ha zeolite. The final result of this research showed that in order to produce high quality of paddy on podsolic soil need the P fertilizer. The zeolite been given along with P fertilizer worth while to increases efficiency, even though it did not positively increasing yield. Adding 300 kg/ha zeolite can reduce the use of fertilizer around 20% P. The Same thing happened to fertilizer K on planosol. Zeolite plus which enriched by a number of minerals giving a better result compare to the one without enrichment. On greenhouse atmosphere, though dosage of zeolite plus (5-10 t/ha) used to increase exchange ion capacity on soil, producing rice around 11.9 t/ha. But on the field, the production decreases cause by heavier disease attack due to the too crowded plantation and too damp condition around the canopy. This is why it is necessary to give the right zeolite plus dosage, not just to increases efficiency, but also to make it financially reachable by the farmer.
ZEOLITE PROCESSING TECHNOLOGY TO BECOME MATERIAL WITH HIGH ECONOMICAL VALUE Goenadi, Didiek Hadjar
Jurnal Zeolit Indonesia Vol 3, No 1 (2004)
Publisher : Jurnal Zeolit Indonesia

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Abstract

Zeolite is a group of hydrated silical alumino mineral from alkaline specially sodium (Na), Potassium (K), Calcium (Ca), and Magnesium (Mg). More then 2000 years since it found the first time by Cronstedt on the year 1756 in Sweden have been found more then 50 type of natural zeolite and 150 type synthetic zeolite. The use of zeolite covers a wide range of field due to its ability as absorber, catalyst and ion exchange. However, the use of natural zeolite have several limitation such as limited source, a very high variation mineral composition, and crystal size, porosity and un uniform pore diameter. On the other hand, synthetic zeolite is created to overcome the difficulty and weaknesses of natural zeolite. Several technological research and development have been carried out to increases the economic value of zeolite by exploitation and modifying zeolite capacity as absorber, catalyst and ion exchanger. Zeolite have been used on agriculture, cosmetics, and other industries.
ZEOPONIC AS GROWTH MEDIA OF HORTICULTURE PLANTS Suwardi, Suwardi; Pangestu, M. Bagus
Jurnal Zeolit Indonesia Vol 3, No 1 (2004)
Publisher : Jurnal Zeolit Indonesia

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Abstract

Hydroponic is a method to growing up plant on non soil plant growth media (PGM) such as water, sand, gravel, carbon etc which mixes with other materials needed to grow the plants. The weaknesses of PGM are the low buffering capacity on electrical conductivity which can disturb the absorbtion of nutrients by plants. This can be caused by the low cation exchange capacity rate on the holding capacity of the media on nutrients. PGM such as zeoponic is made from zeolite and other materials like compost, peat moss, vermiculite, fertilizer, etc. The superiority of zeolite namely high cation exchange capacity and fertilizing efficiency rate, suitable for seed germination media and horticulture plant growth media, stable and more attractive performance. With these superiority, zeoponic became an alternative PGM which potential to increase horticulture plant production and to accommodate germination, both plantation and forestry. More over zeoponic made hydroponic became much easier to be done.

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