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Rifki Septawendar
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INDONESIA
Jurnal Keramik dan Gelas Indonesia
Published by Balai Besar Keramik
ISSN : 08545405     EISSN : 26228114     DOI : https://doi.org/10.32537/jkgi
Core Subject : Science, Engineering,
Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Electrical & Electronics Engineering Materials Science & Nanotechnology
The JKGI contains papers of original research that provide or lead to fundamental principles in the science of ceramics, functional ceramics and ceramic-based composites. These articles include reports of the discovery of new phases, phase relationships, processing approaches and microstructures that relate to ceramic materials and processes. The articles establish the links between processing, structure characterization and properties of ceramics, including modeling approaches that are founded on basic mechanisms. All the published papers must be of enduring value and relevant to the field of ceramics.
Arjuna Subject : Ilmu Material (semua kategori) - Keramik dan Komposit
Articles 72 Documents
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Macroporous Ceramic Filter through Polyurethane Template Replication Method: Characterization and Detergent Wastewater Filtration Trials Eneng Maryani, S.Si, M.T.; Riska Maspupah; Eko Prabowo Hadisantoso
Jurnal Keramik dan Gelas Indonesia Vol 29, No 2 (2020): Jurnal Keramik dan Gelas Indonesia
Publisher : Balai Besar Keramik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32537/jkgi.v29i2.6713

Abstract

Macroporous ceramic filters were made through the template replication method with raw materials, i.e. clay, silica sand and iron oxide powder with a ratio of 70: 27.5: 2.5. The mixture of these ingredients was wet milled in a potmill for 5 hours. Polyurethane as a template was dipped in the mixture slurry with a variation dipping time of 6 and 24 hours. The greenbody filter was calcined at temperature of 900oC with a slowly heating rate. The resulting filter was macroporous with very porous morphology and has interconnections or channels between pores. The pore diameter of the filter which was not added with iron oxide was 1.87 mm and the pore wall was 0.31 mm. The filter added with iron oxide had the highest density and porosity, that is 1.9004 g/cm3 and 38.49%. Filters made of iron oxide powder added material show better filtration performance for pH, TSS and COD parameters for 1% detergent water and detergent wastewater. The best results for the filtration of detergent water samples were pH to 9, TSS reduced by 34.45% and COD decreased by 24.99%.
Synthesis and Characterization of Ca3Co4O9 Ceramic by using Sol-Gel Method Sigit Dwi Yudanto; Septian Adi Chandra; Rahadian Roberto; Dedi Pria Utama; Lusiana -; Wafi Ahdilah; Virginia Octa Herlina
Jurnal Keramik dan Gelas Indonesia Vol 30, No 1 (2021): Jurnal Keramik dan Gelas Indonesia
Publisher : Balai Besar Keramik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32537/jkgi.v30i1.6839

Abstract

We report the synthesis  of Ca3Co4O9  ceramics by the Sol-Gel method with citric acid as the chelating agent.   Calcium   nitrate   and   cobalt   nitrate   as precursors were weighed at an atomic ratio of Ca: Co = 3: 4. The process starts with gel preparation, followed by drying, calcination, and compaction process. The pellets were sintered at 820°C, 860°C, and 900°C for 6 hours in a furnace without flowing gas. The effect of sintering temperature on the formation of the Ca3Co4O9  phase was analyzed using an X-ray diffractometer.  The  Ca3Co4O9   phase has  formed in samples sintered at 820°C with the Co3O4  phase as an impurity. Based on the calculation, the crystallite size decreases with increasing sintering temperature
Synthesis and Characterization of Cetyl Piridinium Chloride Modified and Al2O3 Pillared Clay ferry arifiadi; Irna Rosmayanti; Herlina Damayanti; Hernawan Hernawan; Kristanto Wahyudi
Jurnal Keramik dan Gelas Indonesia Vol 29, No 2 (2020): Jurnal Keramik dan Gelas Indonesia
Publisher : Balai Besar Keramik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32537/jkgi.v29i2.6673

Abstract

Bentonite is a mineral that is very abundant in Indonesia and has the potential to be developed, one of which is by adding intercalant to obtain a modified bentonite with the desired characteristics. In this study, the synthesis was carried out by the intercalation method by surfactant Cetyl pyridinium Chloride (CPC) with % weight variations and then followed by pillarization with aluminum polyoxo. Then the resulting solid phase is calcined at a temperature of 450oC. The results obtained were that bentonite with modified CPC and aluminum polyoxo had higher basal distance and surface area characteristics compared to natural bentonite and this increase was also proportional to the amount of CPC added before the pillarization process. The best modification value in the addition of CPC was 36% by weight with a basal distance of 16,8898 Å and a surface area of 276.478 m2 / g. From this research, it can be concluded that the addition of CPC and aluminum polyoxo to bentonite can increase the basal distance and its surface area. The added CPC concentration also has an effect on increasing the number of pillar cations that enter the bentonite so that the pillarization that occurs in bentonite is more and causes the characteristics of the bentonite to be better.
hal belakang jkgi vol.30 no.1 rifki septawendar
Jurnal Keramik dan Gelas Indonesia Vol 30, No 1 (2021): Jurnal Keramik dan Gelas Indonesia
Publisher : Balai Besar Keramik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32537/jkgi.v30i1.7173

Abstract

Cullet In The Circular Economy Of The Glass Industry Maulid Purnawan, S.Si.; Ria Julyana Manullang; Kristanto Wahyudi
Jurnal Keramik dan Gelas Indonesia Vol 29, No 2 (2020): Jurnal Keramik dan Gelas Indonesia
Publisher : Balai Besar Keramik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32537/jkgi.v29i2.6701

Abstract

Glass waste (cullet) in Indonesia has economic value which is currently not yet properly processed. Cullet processing could be a solution to imported cullets substitution as raw materials for the glass industry and also a solution to environmental problems. One method of processing cullets is through the circular economy. Circular economy is a model that aims to use resources effectively and efficiently by eliminating the emergence of waste and extending the functions and benefits of a resource in a production process. In this paper, a circular economy model for the glass industry has been developed which focuses on the management of cullets through the process of reduce, reuse, recycle and regenerative into cullets as glass raw materials. Several ways to help the application of a circular economy of glass waste in Indonesia are the availability of indutries that collecting, sorting and processing glass waste and also the changes of society culture in waste disposal so that glass waste does not mix with other waste and easy to recycle. Government support as policy makers can also encourage the transition process towards a circular economy.
Composation of Polyaluminum Chloride with Hydroxyapatite and Its Application for Separation of Hexavalent Chromium Ions Basril Simbarta Tarigan; Rukiah Rukiah; Atiek Rostika Noviyanti
Jurnal Keramik dan Gelas Indonesia Vol 30, No 1 (2021): Jurnal Keramik dan Gelas Indonesia
Publisher : Balai Besar Keramik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32537/jkgi.v30i1.6831

Abstract

Chromium  is  the  dominant  heavy  metal  in  liquid waste from the leather tanning industry, wood preservation   and   textile   processing. Generally chromium    waste   is   found   as   trivalent   and hexavalent chromium ions. Hexavalent chromium ion is dangerous  for  humans  because  of  its  carcinogenic  nature, which  can  lead  to  skin  irritation,  lung  cancer,  kidney  and stomach disorders. Coagulation-flocculation (CF) is  a method used to reduce hexavalent chromium ion levels. Polialuminum chloride (PAC) has been widely used in water treatm ent using the  CF  method.  Unfortunately,  however,  the  PAC stability  is poor, the coagulation efficiency  is  low, and the floc formation time is slow. In addition, PAC can produce Al3+ which is toxic in processed water. But its  toxicity  can be overcome by adding donor   ligands   that   contain   oxygen   such   as   hydroxides, carboxylic acids and phosphates, such as hydroxyapatite (HA). In  addition,  the addition of HA with the optimum  composition and pH at PAC can increase the performance of PAC. This study aims to optimize the PAC/HA combination at various pH so as to reduce the concentration of hexavalent chromium ion, controlled by UV-VIS spectroscopy. The highest reduction in Cr (VI) ion content was obtained by PAC, but the highest stability was obtained by the composition of PAC/HA 4: 6.
Modification of Monetite Formation by Controlling of Phosphoric Acid Addition Herlina Damayanti; Karlina Noordiningsih; Kristanto Wahyudi
Jurnal Keramik dan Gelas Indonesia Vol 29, No 2 (2020): Jurnal Keramik dan Gelas Indonesia
Publisher : Balai Besar Keramik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32537/jkgi.v29i2.6712

Abstract

Development of synthetic biomaterials has been done to repair bones and teeth damaged. Monetite is a biomaterial currently being developed for tissue engineering especially bone and dental applications because it has superior osteoconductive, biodegradable and regeneration properties. This research successfully produced the mineral monetite by modification of wet precipitation method with controlling the rate of phosphoric acid addition to calcium hydroxide. The reaction temperature is around 30oC - 65oC and the pH of the solution about 3. The final product from this precipitation process was characterized by XRD for testing mineral content, XRF for testing chemical content, and also SEM for knowing the morphology of product. The results showed that the optimal condition for monetite formation was D2, with controlling of the phosphoric acid rate ¼ mL/second for 2 hours and increased to ½ mL/second for 1 hour. The reaction temperature in the range 34 oC - 50oC and pH 3. The diffraction pattern from XRD test results showed monetite peaks at the following 2θ angle: 13.1; 26.4; 30.2; and 32.9 with the highest intensity (D2) is 4500. Also, the morphology of the crystalline structure approximates the actual monetite crystal, which is like a plate with a width of a particle about 1-3 µm. Thus, the results of this research provide an opportunity further research of the application monetite for tissue and dental engineering materials
Halaman depan JKGI vol 29 no 2 rifki septawendar
Jurnal Keramik dan Gelas Indonesia Vol 29, No 2 (2020): Jurnal Keramik dan Gelas Indonesia
Publisher : Balai Besar Keramik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32537/jkgi.v29i2.6796

Abstract

Fabrication of Cordierite Ceramic Foam Filter by Replication Method Ria Julyana Manullang; Maulid purnawan; Dede Taufik; Ayu Ratnasari; Karlina Noordiningsih
Jurnal Keramik dan Gelas Indonesia Vol 30, No 1 (2021): Jurnal Keramik dan Gelas Indonesia
Publisher : Balai Besar Keramik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32537/jkgi.v30i1.6855

Abstract

Ceramic foam filter (CFF) is widely used to improve the   quality   of   molten   metal   prior   to   casting. Cordierite  is  one  of  the  most  commonly  used materials  for making CFF. In this  research,  the fabrication of cordierite-based   CFF   by   a   replication   method   using   a polyurethane template has been studied. Waterglass and polymethacrylic acid (PMAA) were used as defloculants to synthesize ceramic  suspensions. CFF was made from kaolin, talc, alumina with a defloculant concentration of 0.3% which is sintered at a temperature of 1300 - 1350oC. The experimental results  showed that the porosity obtained for all CFF samples were  above  70%.  The  best  shape  of  CFF  was  obtained  by using PMAA as  defloculant. However, CFF did not reach the maximum  strength yet so it is necessary to carry out further research on the CFF body composition.
Technoeconomic Study of Belitung Kaolin as Import Substitution Material in Fiber Cement Board Production nurhidayati nurhidayati; kristanto wahyudi; faiza elisa hasfianti
Jurnal Keramik dan Gelas Indonesia Vol 29, No 2 (2020): Jurnal Keramik dan Gelas Indonesia
Publisher : Balai Besar Keramik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32537/jkgi.v29i2.6714

Abstract

Cement board that commonly used as raw material for cheap housing component is calcium silicate cement board (fiber cement boards). However, the clay used as raw material for cement boards is still imported. In 2019, imported clay used for construction industry in Indonesia amounted to 57,000 tonnes per year with a transaction value of more than US $ 38 million. On the other hand, Indonesia, especially the province of Bangka Belitung, has a value of kaolin resources of 376,687,532 tons. Baristand Banjarbaru has successfully applied Belitung kaolin as a substitute for imported clay in cement board production. The physical properties of cement board made of kaolin Belitung were not significantly different from cement board made of imported clay.Therefore, Belitung kaolin has the potential to become a substitute for imported clay in cement board production and can be increased in terms of production scale so a techno-economic study is needed. Technoeconomic study had analyzed with the assumptions for a cement board production capacity of 100 tons / day, an investment age of 5 years, an initial investment of 0 for imported clay as raw material and 13,167,000,000 for kaolin as raw material or equivalent to 30% of sales. With the selling price of cement board Rp.55,000 / kg, the NPV of Belitung kaolin is 86,071,631,216.30 and the NPV of imported clay is 77,604,584,262.66. These results indicate that the cement board production business using Belitung kaolin as raw material is feasible to develop.

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