PEMUTIHAN ENCENG GONDOK MENGGUNAKAN H2O2 DENGAN KATALISATOR NATRIUM BIKARBONAT

Diah Susetyo Retnowati

doi:10.14710/reaktor.12.1.33-36

DOI: https://doi.org/10.14710/reaktor.12.1.33-36

PEMUTIHAN ENCENG GONDOK MENGGUNAKAN H2O2 DENGAN KATALISATOR NATRIUM BIKARBONAT

*Diah Susetyo Retnowati - Jurusan Teknik Kimia Fakultas Teknik UNDIP Semarang, Indonesia

Published: 7 Jun 2008.

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Abstract

Batang enceng gondok (Eichornia crasipess) dapat digunakan sebagai bahan baku kerajinan seperti tas, atau digunakan sebagai pengganti rotan dalam industri mebel.Untuk mendapatkan warna yang lebih cerah, umumnya batang enceng gondok kering yang berwarna coklat diputihkan dengan perendaman dalam larutan yang mengandung oksidator. Pada penelitian ini, oksidator yang dipakai adalah hidrogen peroksida, suatu oksidator yang lebih ramah lingkungan dibandingkan dengan oksidator lainnya. Oksidator ini dilarutkan dalam pelarut yang berupa campuran etanol-air. Untuk lebih mempercepat proses pemutihan, juga ditambahkan katalisator NaHCO₃ yang dapat bereaksi dengan hidrogen peroksida membentuk peroksidamonokarbonat yang lebih reaktif. Hasil enceng gondok yang putih dan cerah, serta mempunyai kuat tarik cukup tinggi, diperoleh pada proses pemutihan selama 3 jam dalam larutan etanol-air dengan perbandingan volume 0,36 yang mengandung H₂O₂ dan NaHCO₃ dengan konsentrasi 4 % berat dan 1,95 g/L.

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Keywords: H2O2, etanol-air, NaHCO3, pemutihan, pelarut

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Article Info

Section: Research Article

Language : EN

In Volume 12, Nomor 1, Juni 2008

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