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All Journal PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL)

Sulhadi Sulhadi

Program Studi Magister Pendidikan Fisika Pascasarjana Universitas Negeri Semarang Jl. Kelud Utara III, Kota Semarang, 50237

Author-ID : 4427154

Electrical & Electronics Engineering Energy Physics Other

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Articles

ANALISIS SIFAT ADSORPSI KARBON AKTIF KAYU DAN TEMPURUNG KELAPA PADA LIMBAH CAIR BATIK DI KOTA PEKALONGAN Nihla Nurul Laili; Mahardika Prasetya Aji; Sulhadi Sulhadi
PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Vol 6 (2017): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2017
Publisher : Program Studi Pendidikan Fisika dan Program Studi Fisika Universitas Negeri Jakarta, LPPM Universitas Negeri Jakarta, HFI Jakarta, HFI

Pekalongan City is a center of batik production in Central Java. Problems that arise the process of batik synthesis produce liquid waste that can damage the environment. One of the wastewater treatment of batik can be done by using activated carbon. Charcoal wood and coconut shell charcoal can be used as activated carbon. The process of carbon activation is carried out chemically with an H3PO4 acid solution for 24 hours. The resulting activated carbon is used to adsorb batik wastewater with a variation of immersion contact time. The degradation of waste color before and after active immersion was measured using a spectrometer UV-Vis. The results showed that the longer the contact time between activated carbon and batik liquid waste, the level of clarity of batik liquid waste is higher, and the more decreasing the absorbance value generated. The use of coconut shell charcoal activated carbon in batik liquid waste shows higher clarity level compared to wood activated carbon. Keywords: Wood Charcoal, Coconut Shell Charcoal, Batik Liquid Waste.

PEMANFAATAN SERAT PELEPAH PISANG SEBAGAI BAHAN TALI TAHAN AIR Hasri Arlin Wuriyudani; Sulhadi Sulhadi; Teguh Darsono
PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Vol 6 (2017): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2017
Publisher : Program Studi Pendidikan Fisika dan Program Studi Fisika Universitas Negeri Jakarta, LPPM Universitas Negeri Jakarta, HFI Jakarta, HFI

Waterproof rope with diameter 5 mm and length 30 cm has been produced from banana stalk by spinning process. Spinning process is began by separating inner and outer banana fiber after drying process. The inner fiber is soaked by chitosan 2% with variation of dyeing for 1 hour to 5 hours. Chitosan 2% is obtained by dissolving acetic acid 1% with chitosan powder. Banana fiber is dried and spinned to be a rope. The quality of waterproof rope is indicated by density test, water absorption test, and breaking strength test. The highest density 0,78 is obtained from 5 hours of dyeing. The highest water absorption 87,39% is obtained without dyeing. And the breaking strength 290,00 N is obtained from two hours of dyeing. Keywords: Banana fiber, waterproof rope, chitosan

PEMANFAATAN ABU KULIT BUAH KAPUK RANDU SEBAGAI ALTERNATIF BAHAN PENGEMBANG KUE Nenik Yuniarti; Sulhadi Sulhadi; Teguh Darsono
PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Vol 6 (2017): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2017
Publisher : Program Studi Pendidikan Fisika dan Program Studi Fisika Universitas Negeri Jakarta, LPPM Universitas Negeri Jakarta, HFI Jakarta, HFI

Kapok tree (C. pentandra) is a plant that is commonly found in Indonesia. The skin of kapok fruit containing sodium substances can be utilized as raw material for making baking soda. The purpose of this study is to determine the increase in the volume of cakes owned by food developers. This research method by soaking the ashes of the skin in the air at least 12 hours. Soaked ashes of filtered ashes and evaporated water until temperature of 890 C until the result of baking soda solids. Baking soda testing was done on steamed brown dough. First, the brown dough is given 5 grams, volume is 722.5 cm3. Second, given 10 grams of baking soda, the volumes 1011.5 cm3. As much as 15 grams, the volume 1156 cm3. The provision of baking powder as a comparison is done by the same treatment. The first, given 5 grams of developers, resulting volume 722.5 cm3. Second, as much as 10 grams, the volume 1011.5 cm3. Third, as much as 15 grams, the volume 1156 cm3. From the above test, the addition of baked soda to brownie cake contains the same volume as the volume produced on the addition of baking powder. Keywords: Fruit leather ashes, baking soda

FABRIKASI TINTA SPIDOL WHITEBOARD BERBAHAN DASAR PIGMEN ORGANIK DARI ENDAPAN MINUMAN KOPI Amalia Puspita Rengganis; Sulhadi Sulhadi; Teguh Darsono; Dhamar Putra Fajar
PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Vol 6 (2017): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2017
Publisher : Program Studi Pendidikan Fisika dan Program Studi Fisika Universitas Negeri Jakarta, LPPM Universitas Negeri Jakarta, HFI Jakarta, HFI

The ground of coffee drink does not have a high use value. An attempt has been made to utilize the coffee drink as an organic pigment for the whiteboard marker ink. Making organic pigment was done by reducing the particle size of coffee beverage using ball milling and screen mesh. The process of making the ink is by mixing the ingredients of ink such as Arabic gum, aquades, alcohol, and PEG on organic pigments. The process of making the ink is done by variation of arabic gum binder composition from 1 gram up to 3.5 grams. Based on the test result, the addition of arabic gum mass will increase the viscosity and level of ink adhesion. While in the transmittance test, the addition of arabic gum mass will decrease the intensity value of light transmitted by ink Keywords: Ink, Organic Pigment, Ground of Coffee.

PEMANFAATAN DAUN JATI SEBAGAI PIGMEN WARNA CAT TEMBOK Suhardi Effendy; Sulhadi Sulhadi; Teguh Darsono
PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Vol 6 (2017): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2017
Publisher : Program Studi Pendidikan Fisika dan Program Studi Fisika Universitas Negeri Jakarta, LPPM Universitas Negeri Jakarta, HFI Jakarta, HFI

The utilization of teak leaf extract containing carotenoids for natural dyes on the manufacture of wall paint. Teak leaf extract boiled with 350 ml of water until boiling and filtered with screen mash T100. As glue is used a blend of tapioca flour and lime tohor as much as 75 grams with composition ratio (1: 3, 1: 1,3: 1). As a solvent used mix aqudes, PVAc glue and white cement. In this research, the process of making paint is by mixing all the material from pigment, adhesive, and solvent until homogeneous. Paint quality is shown through viscosity test, adhesion and density. The results of this study indicate that the best paint formulation composition is found in adhesive variation with a ratio of 3: 1 which produces density 1,3 gr/ml, viscosity 0,26 poise and 95% adhesion. Keywords: teak leaves, wall paint, viscosity test, adhesion and density

Co-Authors Amalia Puspita Rengganis Dhamar Putra Fajar Hasri Arlin Wuriyudani Mahardika Prasetya Aji Nenik Yuniarti Nihla Nurul Laili Suhardi Effendy Teguh Darsono

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