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INDONESIA
Jurnal Keramik dan Gelas Indonesia
Published by Kementerian Perindustrian Republik Indonesia
ISSN : -     EISSN : -     DOI : -
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Articles 89 Documents
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Biocomposite of Hydroxyapatite from Chicken Egg Shells and Biochar from Rice Husk As an Adsorbent for Copper Ion and Methylene Blue hendri setiawan; Umi F. Anindi; Dedek Y Pulungan; Nur Akbar; Atiek R. Noviyanti; Solihudin Solihudin
Jurnal Keramik dan Gelas Indonesia Vol 29, No 1 (2020): Jurnal Keramik dan Gelas Indonesia
Publisher : Balai Besar Keramik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32537/jkgi.v29i1.5912

Abstract

The growth of industrial activity and increasing use of water have effected to the releasing of various pollutants into the waters, as methylene blue and copper ions. Excess levels of methylene blue and copper ions in the waters can cause ecosystem damage. This study aims to obtain biocomposites of hydroxyapatite from chicken egg shells and biochar from rice husk as well as their adsorption ability to inorganic pollutants (Cu (II)) and organic pollutant (methylene blue). Hydroxyapatite (HA) was synthesized by calcining chicken eggshells into CaO powder which is then reacted with (NH4)2HPO4. Furthermore HA was mixed with biochar from rice husk to form biocomposites. The ability of the biocomposite adsorption test was carried out by varying the time and initial concentration of the metal solution and methylene blue. Based on the results of the study, HA-biochar composites showed the best contact adsorbing time for methylene blue and copper ions 50 and 30 minutes respectively. Testing of biocomposite adsorption ability to the initial concentration of methylene blue as much as 12.79 ppm showed that the biocomposite is able to adsorb methylene blue to a residual concentration of 1.15 ppm or the maximum percentage of methylene blue that can be adsorbed by 91%. The ability of HA-biochar composites to adsorb methylene blue is better than its constituent materials (HA and biochar). HA-biochar composites was also able to adsorb Cu ions with an average adsorption percentage of 79.45% from the initial concentration.
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.
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
The Utilization of Volcanic Ash in Medium Fired Stoneware Ceramic Body Rohmat Sulistya; Wahyu Gatot Budiyanto
Jurnal Keramik dan Gelas Indonesia Vol 29, No 1 (2020): Jurnal Keramik dan Gelas Indonesia
Publisher : Balai Besar Keramik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32537/jkgi.v29i1.6076

Abstract

The aims of this research are to develop a medium fired stoneware body (1150oC-1250oC) as well as a prototype of glazed ceramic products based on several local clays using volcanic ash. The developed clay comes from Sukabumi, Singkawang, Bojonegoro and Malang. Research includes analysis of raw materials, development of stoneware ceramic bodies, testing of physical properties of ceramic bodies, determination of optimum ceramic bodies and development of prototype products. Raw material analysis consists of mineral analysis using XRD and Atomic Absorption Spectroscopy (AAS). Ceramic body development was carried out by the line blend method followed by testing plasticity, shrinkage, porosity and fracture strength. Prototype product development was carried out on optimum ceramic bodies composition. The results showed volcanic ash can be used to develop local clay-based ceramic stoneware bodies from Sukabumi, Bojonegoro and Malang which optimum ceramic bodies coded as Sb-2, Sb-3, Sb-4, Sb-5, Bn-5, Ml-4 and Ml-5 with volcanic ash percentage of 10%-40%. In this research, the optimum composition for Singkawang clay has not yet been found. However, opaq, matt and celadon glazes that applied to the optimum ceramic body resulted good and decent prototype products
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

SYNTHESIS OF ZrO2 VIA ULTRASONIC ASSISTED PRECIPITATION METHOD FOR PHOTODEGRADATION OF METHYLENE BLUE Soni Setiadji; Nur Tursina; Nanda Dwimar Hakim; Sanusi Sanusi; Tety Sudiarti; Dani Gustaman Syarif
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.v30i1.6807

Abstract

Zirconium dioxide (ZrO2) is a semiconductor material which its photocatalytic properties for degradation of methylene blue has been investigated in this research. ZrO2 was prepared from ZrCl4 solution by adding NaOH through precipitation method without ultrasonication, and also with ultrasonication for 1 h and 2 h. The specimens of ZrO2 were analyzed by X-Ray Diffraction (XRD), Scanning Electron Microscopy (SEM), and Brunauer-Emmett-Teller (BET). The XRD of all ZrO2 samples showed that the smallest ZrO2 crystal size was 8.149 nm based on Debye-Scherrer calculations for ultrasonic time of 2 h. The lattice parameter of ZrO2 under tetragonal phase was analyzed using Rietvield refinement by La Beil method. The specific surface area of all ZrO2 specimens were confirmed by BET. The result showed specific surface area of 99.741 m2/g for treatment with 2 h ultrasonication. The effect of ultrasonic assisted precipitation could increase the photocatalytic activity. This result showed that the degradation of methylene blue by ZrO2 with 2 h ultrasonication is higher than both by ZrO2 with 1 h ultrasonication and ZrO2 without ultrasonication with values of 93.00 %, 88.32 % and 77.53 % respectively, at 120 min irradiation, pH of 10 and 0.05 g of ZrO2 
Potential Utilization of Kaolin from South Kalimantan as a Substitute for Import Clay in Cement Board Making Faiza Elisa Hasfianti; I Gede Dewa Putra Prabawa; Nurhidayati Nurhidayati; Rinnie Nintasari; Nurmilatina Nurmilatina
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.v30i1.6610

Abstract

The   cement   board   industry   in   Indonesia   still depends   on   imported   materials,   such   as   the cement  board  industry  in South Kalimantan which  still uses clay  raw materials  from  Taiwan.  Limited  information  on  the potential use of local clay as an important clay substitution is the reason this research is needed. Identification of local clay factors was carried out by XRD, XRF, and SEM testing. The kaolin that was  tested was the kaolin Tatakan and Limamar. The   results  of  the  analysis   of  the  kaolin  material  were compared  with  the imported clay. The analysis  showed that the   clay   used   by   the  industry   was   illite  with  the  main compound  content  of  SiO2  (54.63%)  and  Al2O3  (28.23%). The results of the analysis of local clay (kaolin) tests showed that the content of compounds with imported clay was shown by kaolin placemat (SiO2  55.92%, Al2O3 29.13%), kaolin Limamar (SiO2  55.04%, Al2O3 32.71%). The quality of the application of kaolin as  a substitute for imported clay in the manufacture of cement board on a laboratory scale shows the result  that  is  not much different in the density  and porosity values.  The  strength  value  of  cement  board  with  kaolin limitation  gives  a  high  enough  value  but  it  is  below  the standard value for PT SNI's cement board product. 
hal depan 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.v30i1.7169

Abstract

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
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

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