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All Journal IJCR (Indonesian Journal of Chemical Research) Berkala Penelitian Teknologi Kulit, Sepatu, dan Produk Kulit
Wahyu Fajar Winata
Program Studi Teknologi Pengolahan Kulit, Politeknik ATK Yogyakarta
Arts Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Social Sciences

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Studi Kinetika Adsorpsi Cu(II) Dan Pb(II) dengan Menggunakan Biosorben dari Polimer Ekstrak Kulit Buah Rambutan Wahyu Fajar Winata; Ika Yanti
INDONESIAN JOURNAL OF CHEMICAL RESEARCH (IJCR) Volume 5, ISSUE 1, 2020
Publisher : Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (35.093 KB) | DOI: 10.20885/ijcr.vol5.iss1.art1

Abstract

RecoveryCu(II) dan Pb(II) yang sebagian besar terkandung dalam limbah cair industri, baik industri besar maupun rumah tangga telah dilakukan, salah satunya adalah dengan proses adsorpsi. Penelitian ini dilakukan studi kinetika adsorpsi Cu(II) dan Pb(II) dalam limbah cair untuk mengetahui efektivitas biosorben dari ekstrak kulit buah rambutan terhadap limbah cair yang mengandung Cu(II) dan Pb(II).Penentuan kinetika adsorpsi Cu(II) dan Pb(II) dengan menggunakan biosorben dari ekstrak kulit buah rambutan dilakukan melalui beberapa model kinetika yaitu model kinetika Langmuir-Hinshelwood,Santosa, Lagergreen dan Ho. Kinetika adsorpsi Cu(II) dan Pb(II) semuanya mengikuti model kinetika Ho, yang merupakan mekanisme kinetika orde dua semu.
EFISIENSI PENGGUNAAN AIR DAN KROM PADA PROSES TANNING SHEEP CABRETTA MENGGUNAKAN METODE EXHAUSTED TANNING CHROME Akbar Izzulhaq; Mustafidah Udkhiyati; Wahyu Fajar Winata
Berkala Penelitian Teknologi Kulit, Sepatu, dan Produk Kulit Vol 21 No 2 (2022): Berkala Penelitian Teknologi Kulit, Sepatu, dan Produk Kulit
Publisher : Politeknik ATK Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (517.511 KB) | DOI: 10.58533/bptkspk.v21i2.181

Abstract

This study aims to make chromium and water more efficient in the tanning process. The methods used include water efficiency from 100% to 50% and chromium reduction from 6% to 4% using exhausted chrome tanning method. The raw material used is grade 6 pikel sheepskin and the auxiliary chemical used is acrylic copolymer. The tests carried out were organoleptic, physical and chromium content in the waste. Organoleptic and physical tests showed that the condition of slackness, and the suitability of color on the crust of the pearl white cabretta article had met consumer purchasing standards. In the results of physical testing of samples using the exhausted chrome tanning method, almost all of them meet the test standards from SII-0943-84. Waste testing showed that the use of the efficiency method had a significant decrease in the amount of total chromium, from 757.35 mg/L to 487.80 mg/L.
KOMBINASI ENZIMATIS DAN KIMIAWI UNTUK MEMINIMALISIR PENGGUNAAN Na2S PADA PROSES UNHAIRING Luthfia Zahrotul Jannah; Mustafidah Udkhiyati; Wahyu Fajar Winata
Berkala Penelitian Teknologi Kulit, Sepatu, dan Produk Kulit Vol 21 No 2 (2022): Berkala Penelitian Teknologi Kulit, Sepatu, dan Produk Kulit
Publisher : Politeknik ATK Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (591.472 KB) | DOI: 10.58533/bptkspk.v21i2.183

Abstract

This research focuses on reducing waste to achieve clean technology by applying a combination of enzymatic and chemicals during the unhairing process. The method applied is to reduce the use of Na2S and NaHS by 0.3% from 2.7% Na2S to 2.4%, 1,5% NaHS to 1.2%, and add a protease enzyme, namely centrobate 1000 LVU by 0.25%. The result based on the trial showed that the addition of an enzyme of 0.25% could remove the hair perfectly and reduce the level of swelling. Moreover, it can produce pickled skin with the same quality. The resulting production waste experienced a significant decrease in COD by 18%, while the BOD was less effective at 1.4%.
Co-Authors Akbar Izzulhaq Ika Yanti Luthfia Zahrotul Jannah Mustafidah Udkhiyati