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INDONESIA
Jurnal Zeolit Indonesia
Published by Institut Teknologi Bandung
ISSN : -     EISSN : -     DOI : -
Core Subject : Education,
Education
Arjuna Subject : -
Articles 6 Documents
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Search results for , issue " Vol 9, No 1 (2010)" : 6 Documents clear
SYNTHESIS MATERIAL OF ZEOLITE NANOPOROUS (ZSM-5) FROM COAL FLY ASH Purwasasmita, Bambang Sunendar; Kurnia, Agung; Wibowo, Arie
Jurnal Zeolit Indonesia Vol 9, No 1 (2010)
Publisher : Jurnal Zeolit Indonesia

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Abstract

Coal fly ash (CFA) is the waste of coal usage that requires serious attention on handling because it is have the large quantity and containing a dangerous substances for environmental. The interesting method of waste processing of CFA is using CFA as zeolite raw material because CFA have a rich silicate and alumina. In this study, CFA is used as a raw material for zeolite synthesis nanoporous (ZSM-5) so that expected could be a solution for waste processing of CFA and also could be deliver a valuable materials that needed on many applications. Based on the result of characterization XRD and SEM, was known that structure of ZSM-5 and other zeolites (Na12Al12Si12O48.27H2O and Na0,3Al2,564Si100O203,996) have been successfully synthesized on hydrothermal processing at temperature of 97°C and the pressure of 1,3 bar.
THE UTILIZING OF ZEOLITE MINERALS AS AGRICULTURE SOIL CONDITIONER IN RELATION TO ITS STANDARIZATION AND INCREASING FOOD CROP Al-Jabri, M.
Jurnal Zeolit Indonesia Vol 9, No 1 (2010)
Publisher : Jurnal Zeolit Indonesia

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Abstract

The used of zeolite mineral as soil ameliorant on agricultural had been known since long time ago. Cation exchange capacity (CEC) of zeolite is ≥ 100 cmol(+) kg-1 which regulated on SNI No 13-3494 1994 is a determining quality of zeolite test. However, it is very reasonable to be revised. There are several reason why determining CEC of zeolite on SNI No 13- 3494-1994 must to be revised, because there is an error as possible as on determining CEC of soil. The research aimed to study the measurement of CEC zeolite for agricultural which conducted on five laboratories were (1) Bogor Agricultural University by using stirring (shaking)-sentrifusi decantation methods, (2) Service Soil Laboratory at Indonesian Soil Research Institute by using percolation method that measured by calorimetric auto analyzer, (3) Soil Laboratory at Indonesian Soil Research Institute by using percolation method that measured by spectrometry, (4) PT. Sucofindo, and (5) Research and Development Centre for Mineral and Coal Technology by using percolation method. The result from quality test of CEC zeolite A and zeolite B from five laboratories was significant different, because the difference procedures of the method such as zeolite quality (grade and types), zeolite fineness, and ratio of zeolite to ammonium acetate solution. The criteria of CEC zeolite for agricultural on SNI recommended to be revised on five types are (1) ≥ 100 cmol(+) kg-1(class A); 100 - 80 cmol(+) kg-1 (class B); 80 – 60 cmol(+) kg-1 (class C), 60 – 40 cmol(+) kg-1 (class D), < 40 cmol(+) kg-1 (class E). The result from test of zeolite effectiveness on green house condition showed that distributing of zeolite soil ameliorant could improving grain yield pithy about 19,41% with the average weight of grain pithy with zeolite are 73,30 gram/pot, while without zeolite are 61,22 gram/pot. Giving the combination of ZKK with manure increasing higher the dry weight loose maize is 8,44 tons/ha than without giving the ZKK is 5,65 tons/ha.
APPLICATION OF ZEOLITE AT SANDY SOIL FOR SEEDLINGS MEDIA OF OIL PALM Rahutomo, S.; Winarna, Winarna; Santoso, H.; Sutarta, E. S.
Jurnal Zeolit Indonesia Vol 9, No 1 (2010)
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Abstract

Two studies of zeolite application on oil palm seedlings for repair media of planting using a sandy soil type to seedlings media of oil palm have been conducted by The Oil Palm Research Center at experimental garden Aek Pancur, North Sumatra. Research I using Typic Udipsamment soil with 4 dose level of zeolite (0,50,100, and 150 g / polybag). Research II using tin tailings which treated zeolite soil amelioran materials, empty fruit bunch compost, dolomite, and also compared with the top soil is Typic Hapludult. The study I showed that application of zeolite is generally able to increase nutrient content in soil and soil cation exchange capacity inclined growth of better seeds. However, at doses of 150 g/polybag, zeolite application actually lowers the pH and increasing Aldd was followed by poor seedling growth. The study II using tin tailings as planting media, zeolite application has not yielded as good as empty fruit bunch compost applications to support seedling growth and nutrient uptake. Continued research related to determining the appropriate dose, and combination with other soil amelioran materials to increasing effectiveness of zeolite in improving the physical, chemical, and biological soil charachteristic as a medium sand fraction dominated planting of oil palm breeding is still very necessary.
INFLUENCE OF CONSISTENCY AND ACTIVATOR LIQUID ON ACTIVATION PROCESS OF NATURAL ZEOLITE BY HYDROTHERMAL FOR HARDNESS WATER PROCESSING IN FIXED COLUMN Rahayu, Endang S.; Damilsun, Adu; Aditia, Krisna
Jurnal Zeolit Indonesia Vol 9, No 1 (2010)
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Abstract

Zeolite can function as cation exchanger or adsorbent for elimination pollutan in water. In general, natural zeolite have a low capability to eliminate a hard subtances in water. The study aimed to increase elimination capacity hardness by activated natural zeolite and study the effect of activation processes. This study was conducted to natural zeolite Cikalong-Tasikmalaya with a hydrothermal process at temperature 100 0 C with variations of consistency reaction system, concentration and activator liquid type. Activation natural zeolite was done with variations of consistency of 12,5%; 25%; 37,5%; and 50%, activator liquid concentrate of 2N NaOH and 1N NaOH, and activator liquid types of NaOH and NaCl. The result of process is a active zeolite to the test of implementation a hard water processing in fixed column with depth of zeolites 90 cm, it was operated continously with a linier speed of 2 m/hours, total hardness and hardness of Ca2+ as a parameters test with reference to SNI 06-4161-1996 and SNI 06-2429-1991, variations of standard water concentration between 240 to 440 mg/l as CaCO3. Natural zeolites gave a lower percent between 11% to 42% from variations of standard water concentration which is given, while the zeolite active between 56% to 96%. The effect consistency of activator process is shown in the lowest elimination values of zeolite. The produce of activation process with consistency of 50% and higest value for consistency of 12,5%. Consistency of 12,5 % was used as consistency reference for other variation processes. The effect of activator liquid concentrate NaOH is not siginificant, indicated by narrows range between 2N NaOH and 1N NaOH is 78% to 92%. Activator liquid type NaCl gives a higher hardness percent 96% at standard water with high of hardness.
IMPROVEMENT REFRACTORY QUALITY OF ALUMINA SILICATE FOR BRASS SMELTING WITH INFILTRATION TECHNIQUE Irwansyah, Ferli S.; Juliandri, Juliandri; Hastiawan, Iwan; Rahardjo, Soewanto; Septawendar, Rifki
Jurnal Zeolit Indonesia Vol 9, No 1 (2010)
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Abstract

Requirement of refractory materials for manufacturing industry and metal smelting is increasing along technology development. Brass smelting needs a larger size ceramic crucible which is known by the name “kowi”. Therefore, it needed a refractory material from local raw materials are higher quality, which has a low porosity, high density, and high mechanical strength. In this study was conducted increasing refractory quality of alumina silicate as a material for manufacturing a brass smelting kowi by infiltration technique. The raw materials such as kaolin, alumina, and magnesium oxide that has been determinate composition were brooded, printed, half-baked burned, infiltrated with a various concentrations, and then burned again, physical and chemical characteristic testing, and also used a Scanning Electron Microscope (SEM) to show morphology of refractory alumina silicate that have been infiltrated. The result showed that refractory alumina silicate was increase the qualities with porosity value of 11,36%, density value of 2,34 kg/m3, water absorbent of 4,85%, and mechanical strength of 129,072 kg/cm2 which can be used as “kowi” material for brass smelting industry.
HEAVY METAL REMOVAL AT SOLUTION WITH NATURAL ZEOLITE Saryati, Saryati; Supardi, Supardi; Suminta, Supandi; S., Rohmad
Jurnal Zeolit Indonesia Vol 9, No 1 (2010)
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Abstract

This research studied the effect of chemical activation processes of natural zeolite to heavy metal removing efficiency (%) and chemical composition of natural zeolite. The solutions 0,5M of HCl,NH4OH, KOH and NaOH was used as an activator. Heavy metal solutions (Cu, Cd, Pb, Zn, Fe and Mn) of 50 ppm was used as sample. Chemical composition of zeolite was viewed semi-quantitatively using a SEM EDX. The result indicate that Si/Al ratio was decreased because alkali activity and increased because the acid activity. The efficiency of zeolite without chemical activation on disposal heavy metals in water reached above 80% for Cd,Pb,Cu and Fe, 44% for Zn and 21% for Mn. Activation of natural zeolite with acid generally reduce the efficiency, except Fe and Pb, whereas activation with mineral salts and alkaline generally increase disposal heavy metal efficiency.

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