Pemanfaatan karbon aktif dari kulit singkong (Manihot utilissila) sebagai adsorben zat pewarna tekstil methylene blue
DOI:
https://doi.org/10.30872/bcsj.v4i2.917Keywords:
Adsorpsi, Konsentrasi Optimum, Massa Optimum, Spektrofometer UV-Vis, Waktu OptimumAbstract
Penelitian ini bertujuan untuk menentukan massa, waktu dan konsentrasi optimum kulit singkong yang dapat menyerap warna metilen biru. Kulit singkong mengandung unsur karbon yang cukup tinggi sebesar 59,31% sehingga dapat dijadikan sebagai karbon aktif dengan metode adsorpsi menggunakan spektrofotometer UV-Vis. Kulit singkong diubah menjadi karbon aktif dengan NaOH 0,1 N sebagai aktivator. Kemudian menentukan massa, waktu dan konsentrasi optimum berdasarkan persentase penyerapan larutan zat warna metilen biru tertinggi. Hasil penelitian menunjukkan bahwa dalam variasi massa 0,5; 0,25 dan 0,125 gram didapatkan persentase berturut-turut sebesar 98,98%; 98,65% dan 96,58%, variasi waktu 5; 10; 15; 30; 60; 120 menit dan 240 menit didapatkan persentase sebesar 87,89%; 90,65%; 91,21%; 92,28%; 97,96%; 98,51% dan 98,76%, dan variasi konsentasi 25; 50; 75; 125 dan 150 ppm didapatkan persentase berturut-turut sebesar 97,41%; 98,43%; 98,42%; 79,01%; dan 70,33%. Dapat disimpulkan persentase penyerapan tertinggi larutan zat warna metilen biru yaitu pada massa 0,5 gram selama 240 menit konsentrasi larutan zat warna metilen biru 50-75 ppm.
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