KOMBINASI ENZIMATIS DAN KIMIAWI UNTUK MEMINIMALISIR PENGGUNAAN Na2S PADA PROSES UNHAIRING

Luthfia Zahrotul Jannah (Program Studi Teknologi Pengolahan Kulit, Politeknik ATK Yogyakarta)
Mustafidah Udkhiyati (Program Studi Teknologi Pengolahan Kulit, Politeknik ATK Yogyakarta)
Wahyu Fajar Winata (Program Studi Teknologi Pengolahan Kulit, Politeknik ATK Yogyakarta)

Berkala Penelitian Teknologi Kulit, Sepatu, dan Produk Kulit
Vol 21 No 2 (2022): Berkala Penelitian Teknologi Kulit, Sepatu, dan Produk Kulit

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%.