Ferli S. Irwansyah, Ferli S.
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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)
Publisher : Jurnal Zeolit Indonesia

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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.
Pengolahan Air Sungai Menjadi Air Layak Konsumsi Menggunakan Kulit Pisang Raja Bulu (Musa paradica) Irwansyah, Ferli S.; Susanti, Susan; Windayani, Neneng
Jurnal Perspektif Vol 1, No 1 (2017): Jurnal Perspektif
Publisher : UIN Sunan Gunung Djati Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15575/jp.v1i1.1

Abstract

Tujuan dari penelitian ini adalah menganalisis kondisi massa optimum koagulan terhadap pH dan kekeruhan pada pengolahan air sungai Cisangkuy menjadi air domestik nonkonsumsi serta menganalisis karakteristiknya sebelum dan sesudah pengolahan menjadi air domestik nonkonsumsi dengan menggunakan adsorben dari kulit pisang raja bulu (Musa paradica). Tahapan dalam penelitian ini terbagi menjadi beberapa bagian, tahap pertama adalah menganalisis air sungai sebelum perlakuan apapun dengan paramater pH, bau, kekeruhan, kesadahan, kadar besi, mangan dan kadmium. Tahap kedua adalah menentukan optimasi koagulan dari kulit pisang raja bulu (Musa paradica) dan tahap ketiga adalah melakukan penyaringan air sungai melalui media filtrasi. Analisa karakteristik air sungai Cisangkuy dengan parameter bau, pH, kekeruhan, kesadahan, mangan, besi, dan kadmium setelah dibandingkan hasilnya dengan analisa air sungai sebelum pengolahan, semua hasilnya menunjukan penurunan, dan memenuhi baku mutu yang berdasarkan Peraturan Pemerintah No. 82 Th. 2001. Adapun persen penurunan dari setiap parameter, yaitu kekeruhan 87.50%, pH 25.4%, kesadahan 24.28%, Fe 95.55%, Mn 70.51%, dan Cd 98.50%. Kata kunci: air sungai, absorben, Musa paradica.