Abstract
This study utilized pineapple peel waste into a membrane of nata de pina and used as an adsorbent for remazol red RB. The purpose of this study was to synthesis nata de pina membranes, determine the optimum pH, concentration and contact time of adsorption, isotherm pattern, and the maximum adsorption. The results indicated that cellulose nata de pina membranes were successfully synthesized and had the potential to become adsorbents for absorbing remazol red RB dyes. FTIR results showed that membrane nata de pina was a cellulose based membrane with swelling test result of 187.9%. The optimum conditions were at pH 2 with adsorption capacity of 17.12 mg/g, concentration of 80 mg/L with absorption capacity of 22.36 mg/g and contact time at 120 minutes with absorption capacity of 25.29 mg/g. The adsorption of remazol red RB dye has fulfilled the pattern of Langmuir adsorption isotherm with maximum adsorption of 0.0219 g/g or 21.9 mg/g adsorbent.
 Keywords: Adsorption, Nata de pina, membrane, Remazol red RB
Highlights
This study utilized pineapple peel waste into a membrane of nata de pina and used as an adsorbent for remazol red RB
The results indicated that cellulose nata de pina membranes were successfully synthesized and had the potential to become adsorbents for absorbing remazol red RB dyes
Penyisihan Kandungan Sulfida Dan Warna Dalam Limbah Industri Batik
Summary
Pembuatan Nata de pina Kulit nanas yang sudah dibersihkan ditambahkan dengan air perbandingan (1:4) yakni 200 gram kulit nanas ditambah dengan 800 mL air, lalu diblender kemudian disaring agar diperoleh filtratnya. Selanjutnya nata de pina dinetralkan dengan cara direndam selama 24 jam pada larutan asam asetat 1% (v/v). Nata dicuci dengan air beberapa kali sampai pH nata nentral kemudian nata dikeringkan dalam oven pada suhu 40°C sampai menjadi lembaran membran selulosa nata de pina (Aprilia,2009). Untuk mendapatkan massa kering (Wk) maka membran yang dikeringkan pada suhu kamar kurang lebih selama 24 jam kemudian ditimbang. Membran nata berukuran kurang lebih 4x4 cm dengan massa yang sama, masingmasing dimasukkan kedalam zat warna remazol red RB dengan konsentrasi 60 mg/L sebanyak 50 mLpada pH berturut-turut 1, 2, 4, 7, 9 dan 11 dengan cara menambahkan HCl kemudian digoyang dengan shaker selama 120 menit. Hasil pH dan waktu kontak optimum yang diperoleh digunakan untuk menentukan konsentrasi optimum.
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