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Budhi .
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Chemical Engineering, Chemistry & Bioengineering Chemistry

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PENGARUH WAKTU PEMANASAN PADA PROSES DEASETILASI TERHADAP YIELD CHITOSAN DARI LIMBAH KULIT UDANG SEBAGAI ALTERNATIF BAHAN PENGAWET MAKANAN Budhi .; Satiani .
Jurnal Ilmiah Teknik Kimia Vol 1, No 1 (2017): JURNAL ILMIAH TEKNIK KIMIA
Publisher : Program Studi Teknik Kimia, Universitas Pamulang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (221.502 KB) | DOI: 10.32493/jitk.v1i1.521

Abstract

The solution can be reached from the alternative preservatives are not expensive is using waste from organic materials. An example is chitosan from crab shell waste or waste shrimp shells. Chitosan has a high economic value. So that it can provide benefits to producers or sellers of food and also provide security to the people of the food they will consume. This research  aimed to study the effect of heating time in the process of deacetylation, the yield chitosan from shrimp shell waste as an alternative preservatives. Shrimp shell waste is cleaned first, and then sieved with a 120 mesh size filter. After it was weighed, added a solution of NaOH (deproteination process) comprising water reacted with NaOH and then heated at 100 ° C for 2 hours and then filtered, after which the precipitate obtained is drained. Dried precipitate was added HCl (demineralization), then heated to a temperature of 80 ° C for 8 hours, then filtered and after the precipitate obtained (chitin) is dried. Chitin is reacted with NaOH (deacetylation) and then heated at 80 ° C with a variety of heating time 2 hours, 3 hours, 4 hours, 5 hours and 6 hours, and then filtered. The research showed the optimum heating time is 4 hours at 80 ° C at a yield of 23.08% chitosan.Keywords : chitosan, deacetylation, deproteination, preservatives, yield
PENGARUH WAKTU DAN LUAS PERMUKAAN TERHADAP KETEBALAN PRODUK PADA ELEKTROPLATING ACID ZINC Irman .; Budhi .; Faevi .; Iis .
Jurnal Ilmiah Teknik Kimia Vol 1, No 1 (2017): JURNAL ILMIAH TEKNIK KIMIA
Publisher : Program Studi Teknik Kimia, Universitas Pamulang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (333.061 KB) | DOI: 10.32493/jitk.v1i1.522

Abstract

This research  using Faraday’s law to analize result of measurements. There are 2  parameters varying  in research, the surface area of specimen  ( 6 x 10 cm², 6 x 5 cm² and 5 x 3  cm²) and time  ( 6, 9 and 12 minutes). The research method was done  by electroplating scheme consists of a cathode, anode, electrolyte, which is coupled with a DC electrical current that is placed on Hull Cell. The purpose of research is to determine impact of extent of time and amount of  surface area of specimen to layer thickness occured from the acid zinc electroplating methods. The result of  research obtained is the greater of surface area  will form specimen mass and layer smaller, and the longer of  electroplating process time will form  speciment mass and layer increasing thickerKeywords : Electroplating, Acid Zinc
Co-Authors Faevi . Iis . Irman . Satiani .