Activated carbon from banana peel waste through two stages of hydrothermal (HT) and physical activation processes has been carried out. The process was out at a temperature 200 oC with holding time 2 or 6 hours. hydrochar that had obtained then activated in the second stage nitrogen gas flow (N2) 700 for 1 hour rate 100 mL/min. difference treatment, without HT process, activation, variations activator agents (water, H3PO4, PEG6000), water volume ratio were studied their effects on specific...

The aim of this research was to study the petrography and chemical properties basalt rock from East Lampung district, province. Petrography analysis performed using a polarization microscope, composition X-RF method. From samples, mineral consists pyroxene, plagioclase, olivine, opaque minerals. Basic mass samples is, composed plagioclase pyroxene with subhedral-anhedral shape, forming intergranular texture, uniform distribution. Mineral is colorless blade transformed into minerals size <0.2...

Zeolite alam merupakan batuan mineral yang banyak terdapat di Indonesia. kristal alumino silikat memiliki kegunaan dalam bidang industry, agrikultura, dan pengolahan air limbah. Melalui proses aktivasi zeolite akan mampu meningkatkan aktivitas dari tersebut. Aktivasi dilakukan secara kimia dengan menggunakan larutan HCl NaOH pada variasi konsentrasi 0.5, 1, 1.5, 2, 2.5 M. Selanjutnya tersebut dianalisa XRD XRF. Berdasarkan hasil XRD, kandungan utama adalah mordenite. Sedangkan XRF...

Views Icon Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Twitter Facebook Reddit LinkedIn Tools Reprints and Permissions Cite Search Site Citation Muhammad Amin, Fery Hendi Jaya, Yusup Hendronursito, David Candra Birawida, Slamet Sumardi, Al Muttaqii, Erik Prasetyo, Sari Utama Dewi, Asnan Rinovian; Characterization of high-quality concrete using fly ash silica fume slag materials from boiler ash. AIP Conf. Proc. 28 February 2024; 3003 (1): 020033....

The ceramic glaze method is not only done to add color aesthetics but also increase the hardness of glaze. Basalt one raw materials developed as a material because it cheap, easy find, and has good characteristics. This research aims determine characteristics by varying concentration basalt rocks from Ababi area, Karangasem Regency, Bali Province. experiment used at 45%-61%, Feldspar 27%-37%, Kaolin 3%-8%, ZnO 7%-10% for glaze, frit Heating layer 1,250 °C 3 hrs. product ceramics include...

Abstract Aluminium matrix composites (AMCs) becomes a choice for automotive and aerospace industries due to its tenable mechanical properties such as high hardness good strength weight ratio. Reinforcement like particulate alumina, silicon carbide, graphite, fly ash, etc can easily be incorporated in the melt using cheap widely available stirring casting method. This research investigates optimum of AMCs containing basalt powder reinforcement by setting varying parameter. The design...

Telah dilakukan penelitian yang bertujuan untuk mengetahui kualitas briket arang terbaik dan terburuk dari limbah pertanian berdasarkan kandungan proksimatnya. Limbah digunakan adalah sekam padi, ampas tebu, kulit singkong, tongkol jagung, batok kelapa. Metode karbonisasi pirolisis dengan pengujian kadar air lembab, abu, zat terbang, karbon tertambat. Hasil menunjukkan bahwa singkong karena memiliki abu terendah, yaitu 0,3833% 0,8452%. Sementara, jagung tertinggi 2,412 % tertambat terendah 71,442 %.

Indonesia has an abundant amount of basalt rocks resources, including in East Lampung Regency Province. This not been used optimally and only be as a foundation. The use soil fertilizer also known the stone meal. study focused on effect using dust growth development organic application for cassava plant. is to support local government policies that declared national centre cassava, with production rate 30.8% cassava. Basalt powder was characterized test petrograph X-ray Fluorescence (XRF)...

This study was conducted to determine the effect of concentration basalt as a cement substitution material in mortar. Basalt analysed by XRD and XRF. From results, diffractogram shows dominant phases, such anorthite, augite, forsterite, quartz or silicon oxide. SiO2, Al2O3, Fe2O3 are main components basalt, can be seen from With at 5% before calcination, optimum compressive strength OPC PCC mortar obtained. The highest 24.97MPa with porosity 2.4% absorption 1.29 %. Furthermore, 22.55MPa 4.8%...

Green sand is one of the most important components in process metal casting. The Indonesia region varied level subtlety, size sand, and shape sand. used casting possible can affect quality product. This aims to determine potential Tanjung Bintang as green product terms porosity defects. research was conducted by varying river from Maringgai. Composition made 100%,75%, 50%, 25% compared Maringgai with bentonit water 10% 5% constantly .The Examine SNI 15-0312-1989 among other content, clay...

Performance analysis of crucible that used in aluminum casting at Small and Medium Enterprises (SMEs) Foundry have been done by non-destructive test (NDT). A testing method is a felicitous because it does not interfere with the production process. The includes Chemical composition use X-Olympus XRF to know material, fluids flow design using finite element Autodesk Inventor Software Simulation CFD. Based on results showed consists 97.17% Fe, 1.68% Si, 0.6% S, 0.22% Mn, 0.26% P, 0.08% Cr. From...

Abstract The aim of this research is to conduct initial on the process melting basalt rocks using an upright shaft furnace. preliminary rock has been carried out as a raw advanced material. material was obtained from East Lampung, Lampung Province, Indonesia. Coke used fuel for smelting process. Laboratory scale furnace which designed and made by Research Unit Mineral Technology lasts 4 hours, starting charging materials tapping process, with temperature 1500-1600 °C. yield can reach 68,7%,...

This study assessed the effect of paving blocks product using basalt minerals with variation concentration. The raw material for producing such as cement, sand, andesite, and water. block was made without over concentration 5 %, 15 25 35 %. powder sifted mesh sieve 60 80. Then, analyzed by XRD, XRF. analysis physical properties compressive strength (SNI 03-2493-1991), density (ASTM D-854), absorption 1969-2008), porosity 1969- 2008). characterization from XRD showed formed phase Gismondine,...

Optimizing hammer mill hammers (HMHs) forms by using autodesk inventor software had been conducted. The optimizing was done simulating four types of (HMHs 1, HMHs 2, 3, and 4) to obtain optimal forms. Impact load received each HMH 21,396 N, moment value 1,326 Nmm. material use manganese steel. Hammer machine doube rotor type it worked at 2500 rpm. simulation results showed that maximum von mises stress values for 1; 2; 3 4 were 486.393 MPa; 22.928 450.313 MPa 285.768 respectively....

Glass-ceramics were fine-grained polycrystalline materials produced by controlled crystallization in the glass phase to have outstanding characteristics. The establishment of basalt from Sukadana - Lampung Province into glass-ceramic begins with process

Views Icon Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Twitter Facebook Reddit LinkedIn Tools Reprints and Permissions Cite Search Site Citation Yusup Hendronursito, Kusno Isnugroho, David Candra Birawidha, Muhammad Amin, Irza Sukmana, Widi Astuti, Edi Suharyadi, Harsojo; The effect of additive (SiO2, MgO, CaO) in the hardness crystal phase basalt glass-ceramics. AIP Conf. Proc. 28 February 2024; 3003 (1): 020025. https://doi.org/10.1063/5.0192151...

Views Icon Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Twitter Facebook Reddit LinkedIn Tools Reprints and Permissions Cite Search Site Citation David C. Birawidha, Sudibyo, Yusup Hendronursito, M. Amin, Erik Prasetyo, Roniyus Marjunus, Dwi Asmi, Prinanti; Analysis of adhesive variation pressure on light bricks made from perlite basalt. AIP Conf. Proc. 28 February 2024; 3003 (1): 020016. https://doi.org/10.1063/5.0186346 Download citation file: Ris...

The development of industrial activities has an impact on the increase in waste produced, and fly ash, aluminum dross, basalt dust are no exception. This research studies potential these three materials as ceramic materials. Basalt from East Lampung was used filler. effect physical mechanical properties mullite (3Al&lt;sub&gt;2&lt;/sub&gt;O&lt;sub&gt;3&lt;/sub&gt;-2SiO&lt;sub&gt;2&lt;/sub&gt;) ceramics studied. manufacture based Taguchi design includes ash compositions 40%, 50%, 60% content...

A research on using biomass waste as an energy source for metal foundry process was conducted. The started with carbonizing to produce charcoal. Carbonizing conducted by indirect heating system or dry distillation at 700°C. Used raw material came from some plant parts including three twigs of kandri (Bridelia monoica); jati (Tectona grandis); sonokeling (Dalbergia latifolia); kersen (Muntingia calabura); luwingan (Ficus hispida); acacia (Acacia denticulosa); cassava stem (Manihot...

The use of clay minerals as the main raw material for pottery and sand additives has many weaknesses, among others, easy to crack, have high water absorption low compressive strength. Therefore it is necessary develop a better method making traditional ceramics by providing additional materials such mineral feldspar. Mineral feldspart can be used ceramic because functional filler glass forming phases. Clay were analyzed using XRF method, followed mixing with composition soil mixture much 65%...

The process of melting basalt stone from Mataram Baru, East Lampung has been carried out over a mini shaft furnace with temperature 1600 ˚C. Basalt the smelting was modified slow and fast cooling methods. Based XRD result shows methods were significant applied to liquid stone. By process, crystal structure is unchanged original material but mechanical characteristics increased. While by amorphous weak properties are obtained material. results show, both products have great potential be used...

Basalt is a raw material that can be used as an alternative in the manufacture of cement clinker because has properties pozzolan and its reserves are quite large Indonesia. The main component basalts such SiO2, Al2O3, Fe2O3, CaO, MgO. It for substitutions. was made with composition lime, basalt, clay, silica iron sand percentage weight 71 %, 10 9 1 respectively. Then, components mixed ball mill 6 h. Clinker from pellets diameter 10-12 mm burned muffle furnace variable temperature 1000 °C,...

A study of making Aluminum Matrix Composites (AMCs) uses recycled glass powder (RGP) as a filler has been carried out through the stir casting process. The experimental design Taguchi method 3^3 orthogonal array L9 with parameters size (20>x> 80, 80>y> 200, 200>z> 325), percentage vs matrix (2%, 7%, 12%), and stirring time (30 Seconds, 3 Minutes, 12 Minutes). optimum conditions for hardness Al-GRp composites were obtained from specimens Mesh 200> z> 325, aluminum was 12% wt, minutes. factor...