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INDONESIA
Jurnal Zeolit Indonesia
Published by Institut Teknologi Bandung
ISSN : -     EISSN : -     DOI : -
Core Subject : Education,
Education
Arjuna Subject : -
Articles 202 Documents
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PHOTOCATALYTIC PRODUCTION OF TiO2-NATURAL ZEOLITE FROM TASIKMALAYA FOR PHOTODEGRADATION OF METHYLENE BLUE Arfan Sani A.; Atiek Rostika N.; Diana Rakhmawaty
Jurnal Zeolit Indonesia Vol. 8 No. 1 (2009)
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Photocatalyst is reaction process of one materials to another materials which aided by energy from ultraviolet radiation and solid catalyst. The study conducted by making a catalyst based on variation concentrates from natural zeolite Cikalong-Tasikmalaya with addition of TiO2. The test of photocatalytic activity was conducted on methylene blue. The purpose this study to obtain a new photocatalytic is modified of natural zeolite with TiO2 which expected had a high reactivity so able to used on waste fluid processing. The step was conducted were activated natural zeolite, than making of photocatalytic from TiO2 and natural zeolite, and the last is drying on the oven and calcination at 5000C. In the diffraction pattern of TiO2-zeolit (20%) there was a peak of TiO2 around of 2θ about 25,3o, it is indicated that TiO2 was surroundings on natural zeolite. TiO2-zeolit (20%) which was analyzed with SEM showed that active metal of TiO2 has been surroundings on surface of zeolite. Analysis of gas absorption (GSA) with BET methods showed an increase wide of 7,0 m2/g for zeolite and19,4 m2/g for TiO2-zeolit (20%). Best degradation of methylene blue was indicated by TiO2-zeolit (20%) with the value of 82,5% after the radiation with ultraviolet for 80 minutes and measured by visible UV spectrophotometer.
THE KINETIC OF CYCLIZATION-ACETYLATION (R)-(+)-CITRONELLAL WITH ANHYDRIDE ACETIC ACID WHICH CATALYZED OF Zn2+-NATURAL ZEOLITE Edy Cahyono; M. Muchalal; Triyono Triyono; Harno Dwi Pranowo
Jurnal Zeolit Indonesia Vol. 8 No. 1 (2009)
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Reaction kinetic of acetylation-cyclization (R)- (+)-citronellal with acetic acid anhydride which catalyzed Zn2+-zeolite (Zn2+-Za) was analyzed by Langmuir- Hinshelwood Models. (R)-(+)-citronellal isolated from lemongrass oil with fractionation distillation reduced pressure and analyzed anantiomer ratio with GC chiral column β- DEX 225. Catalyst preparation of Zn2+-Za conducted by acid activation on natural zeolite Malang 100 mesh using 1% HF and 6 M HCl, then soaked on 0,1 M NH4Cl. Calcination was done at 450oC during 1 hour with N2 flow to achieved H-natural zeolite (HZa). Cation exchange H-Za with 0,1 M ZnCl2 conducted to obtain Zn2+-natural zeolit (Zn2+-Za). Reactions of Cyclization-acetylation (R )-(+)- citronellal using a catalyst of Zn2+-Za was done by varying molar ratio of (R )-(+)- citronellal with acetic acid anhydride, namely 0.25, 0.5, 1.0; 1 , 25; 1.5. During the reaction, into system, samples were taken each 1 mL of reaction with duration 10, 20, 30, 60, 120, 180 minutes. Reaction product was extracted with n-hexana. Structure elucidation was done by GC-MS, FTIR spectrophotometer, and 1H-NMR spectrometer. The result showed a greater molar ratio (R)-(+)-citronellal against quantity of acetic acid anhydride acetic, pulegil total was decline. Acetylation-cyclization catalyzed with Zn2+-Za on duration of 30 minutes and 80°C has k of 30.964 to 47.619 mmol (minute.gram catalyst)-1 and KSIT/KAA of 7.09.
THE EFFECT OF NaOH CONCENTRATION AND TEMPERATURE ON ZEOLITE SYNTHETIS FROM FLY ASH BY HIDROTHERMAL ALKALI Jumaeri Jumaeri; Sutarno Sutarno; Eko Sri Kunarti; Sri Juari Santosa
Jurnal Zeolit Indonesia Vol. 8 No. 1 (2009)
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Zeolite synthesis from coal fly ash PLTU Tanjung Jati Japara was conducted by hydrothermal alkali. Preparation was done on fly-ash that has been refluxed with 1M of HCl and without refluxed. NaOH with certain concentration (2, 3, and 4M) was mixed with coal fly-ash by ratio 10 ml each 1 gram of fly ash into Teflon tube 100 ml at autoclave stainless-steel. Then, autoclave was heated on the oven at temperature of 120-1600C. Synthetic zeolite ouput was qualitative tested by using infrared spectroscopy, X-Ray diffraction, and SEM. The result showed that NaOH concentration, temperature, and hydrothermal alkali period of coal fly ash was affecting characterization of zeolite ouput. The temperature which use for optimally hydrothermal processes exist on range 140 "“160oC. The increase of temperature causes improving crystallization of zeolite products. Hydrothermal synthetic product from fly ash is alumina-silica compound which are a mixture of some crystals such as P zeolite, Y zeolite, sodalite, mullite, and quartz.
TECHNIQUE OF ZEOLITE APPLICATION ON AGRICULTURAL AS A SOIL AMELIORANT Suwardi Suwardi
Jurnal Zeolit Indonesia 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.
Cs ION EXCHANGE CAPACITY OF ZEOLITE BAYAH, LAMPUNG, AND TASIKMALAYA Noviarty Noviarty; Dian Anggraini; Arif Nugroho
Jurnal Zeolit Indonesia Vol. 8 No. 1 (2009)
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Cs ions exchange process has been conducted on natural zeolite (from Bayah, Lampung, and Tasikmalaya) which was activated with ammonium chloride. NH4-zeolite which was formed, is used to exchanger or absorber material of Cs ions. The duration of ions exchange process was optimized by varying the stirring time of 1 hours, 2 hours, 3 hours, 4 hours, 5 hours, and 24 hours. In all three zeolite types was obtained the optimization process time are the contact time of 1 hours. Cation exchange capacity (CEC) of natural zeolite was determined by standard methods. Attempts to obtain a monocation zeolite as a NH4-zeolite effectively acquired about 88% which used as a exchanger or absorber Cs ions. The effectiveness of Cs ions Cation exchange capacity with the ammonium was determined by batch-exchange for 1 hour. The calculation result o effectiveness CEC-Cs are 1.4269 Meq/gram ± 0.0397, RSD: 2.79% for Bayah zeolite, 1.4476 Meq/gram ± 0.0103, RSD: 0.71% for Lampung zeolite, 1.4044 Meq/gram ± 0.0050, RSD: 0.36% for Tasikmalaya zeolite. Stability of Cs-zeolte bond against heat treatment was tested at temperature of 25°, 300°, 600 °, 900°, and 1200 °C. The result showed that the relea se of Cs-ions is not significant from zeolite structure. The heating below 900°C, the release of Cs-ions jus t occurs on the surface (it was not change the initial of zeolite structure), whereas above that temperature was occurs the changed of zeolite structure, although there was not visible the release of Cs-ions on leaching process at the water. The conclusion is all three types of natural zeolite was potentially to be used as Cs-ions isolate which is especially useful to absorbing Cs-radioactive isotope as a result from fission of nuclear fuel element.
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)
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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
PERFORMANCE OF MALE MICE (MUS MUSCULUS) AGE 28-63 DAYS IN THE COTE WITH HUSK LAYER, SAND LAYER, AND ZEOLITE LAYER WITH PARTITION OR NOT Rakhmadi I.; Muladno Muladno; H. C. H. Siregar; Pollung H. Siagian
Jurnal Zeolit Indonesia Vol. 8 No. 2 (2009)
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The study aimed to analyze the effect of different layer types with pertition or not against perfomence male mice ages 28-63 days and to find out the information of ammonia on different layer cotes. The parameters measured were feed intake BK, dringking water, beginning and ending BW, ADG, feed convertions, mortality, and ammonia on cages. CRD designs was used in 3 x 2 factorial experiment, the first factor are types of layer (huks, sand, and zeolite) and the seconds factor are partition of layer (without insulation and section). The data obtained were analyzed with ANOVA if there are a real result, followed by Tukey test appeal. The data which not suitabele with the parameters was analyzed with Kruskal-Wallis test, whereas the ammonia on cote described descriptively. The result showed that different types of layer most significant (p
MODIFICATION NATURAL ZEOLIT BY PLANTING INHIBITOR OF Cu WITH BATCH METHOD AS RAW MATERIAL FOR ANTISEPTIC MEDICINE Dewi Fatimah
Jurnal Zeolit Indonesia Vol. 8 No. 2 (2009)
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Natural zeolite can be develop as alternative raw materials pharmaceutical product, particularly as an absorbent of microbial pathogens and it is widely spread in almost province at Indonesia. The study conducted by modifying natural zeolite by planting inhibitor of Cu which functions as raw materials for medicine, especially as an antiseptic carrier. Process of planting Cu was conducted on Zeolite-H with variation stirring time of 2,4 6, and 8 hours at room temperature. Inhibitor planting process by batch methods was conducted on batch reactor. The result showed that purification process could be reduce a free oxides from Si, Al, Ti, Ca, and Fe which covered crystal structure and there is not occurred a peaks degradation of modernite and clinoptilolite on XRD diffractogram. Through SEM analysis can be seen form of modernite and clinoptilolite crystal that result of purification process more clearer. The EDX analysis showed that conversion to zeolite-Cu was successfully done and highest absorption of ASS at stirring time of 6 hours with concentration Cu of 299,5 ppm. Dynamic oligo antiseptic carrier test from zeolite-Cu was conducted on Candida albicans and Escherichia coli Growth. The media used were gel nutrient on various concentrations at incubation time of 30oC for 24-48 hours. The result showed that Zeolite-Cu can significantly reduce a Candida albicans and Escherichia coli growth.
THE EFFECT OF ZEOLITE RATES ON GROWTH Cd SHOOT CONTENT AND YEILD OF THE LATTUCE (LACTUCA SATIVA L.) UNDER HEAVY METAL CADMIUM STRESS Noertjahyani Noertjahyani; Nunung Sondari
Jurnal Zeolit Indonesia Vol. 8 No. 2 (2009)
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Cadmium is a non-essential heavy metal which can poison the plants. It is can inhibit the growth of plants moreover cause cell death. The lettuce is one of vegetables that are usually consumption on fresh. This plant adsorbing Cd from soil and accumulate on leaf greater than root. The study aimed to study the effect of zeolite rates to growth, cadmium shoot content, and lettuce (L. sativa) under Cd stress condition. The experiment was conducted on February until April 2009 at greenhouse of Agriculture Faculty, Winaya Mukti University Tanjungsari- Sumedang with elevation of 850 asl. The experiment design was using a Randomized Block Design (RBD) with 4 treatments and repeated six times. Zeolite rates treatments are 0 ton ha-1, 2 ton ha-1, 4 ton ha-1, and 6 ton ha -1 of zeolite. The result showed that given zeolite is not only could increase a plant height, leaf number, plant fresh weight, dry weight fade, root fade ratio, but also could reduce a Cd shoot content of lettuce. Application of 6 ton ha-1 zeolite not only gave the best effect to plant height age of 14 days after planting (dap), 21 dap, and 28 dap, leaf number/plant, fresh weight/plant, dry weight fade, root fade ratio, but also reduce a Cd shoot content of lettuce at 25,14%.
THE INFLUENCE OF SLOW RELEASE FERTILIZER UREA-ZEOLITE-HUMIC ACID (UZA) TO PADDYS PRODUCTIVITY VARIETY CIHERANG Kurniawan Riau Pratomo; Suwardi Suwardi; Darmawan Darmawan
Jurnal Zeolit Indonesia Vol. 8 No. 2 (2009)
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Slow Release Fertilizer (SRF) is a modification fertilizer which aims to improving subtances efficiency on fertilizers by organizing the release slowly or gradually. The methods which used to made a SRF has any variety such as enlarging size, smoothing fertilizer surface, mixing with another difficult soluble materials, and covering fertilizer with certain ingredients so releasing fertilizer under soil more slowly. Some materials can be used as SRF materials are zeolite and humic acid. Zeolite is a silicate mineral which have a high cation exchange capacity (CEC) (varying between 80-180 meq/100g), fit hollow space to ammonium ion size so it have high adsorption capacity to ammonium ion. Meanwhile, humic acid which extracted from inorganic materials has a high CEC too. In this study, urea fertilizer has easily lost characteristics because of leaching and evaporation was conducted by covering zeolite and humic acid. The study aimed to find a proper dosage from combinations of urea, zeolite, and humic acid (UZA) for the paddy and to find proper applications of UZA for paddy. The experiment was conducted in green house with paddy variety Ciherang as an indicator plant. Paddy was fertilized with a standard dosage of N fertilizer from UZA with humic acid value of 0%, 1%, 2%, 3%, 4%, and 5%. UZA fertilizer can improving paddy growth and productivity. UZA fertilizer with 1% humic acid dose is a the best dosage for paddy. The spread distribution of UZA was better than buried on the mud.

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