Pengolahan Limbah Cair Industri Batik dengan Metoda Elektrokoagulasi Menggunakan Seng Bekas Sebagai Elektroda

Noni Ika Rahmawati; Suhartana Suhartana; Gunawan Gunawan

doi:10.14710/jksa.12.2.40-46

DOI: https://doi.org/10.14710/jksa.12.2.40-46

Pengolahan Limbah Cair Industri Batik dengan Metoda Elektrokoagulasi Menggunakan Seng Bekas Sebagai Elektroda

Noni Ika Rahmawati, Suhartana Suhartana

, Gunawan Gunawan

Chemistry Department, Faculty of Sciences and Mathematics, Diponegoro University, Indonesia

Published: 1 Aug 2009.

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Abstract

Telah dilakukan penelitian pengolahan limbah cair industri batik dengan metoda elektrokoagulasi menggunakan seng bekas sebagai elektroda yang bertujuan untuk memisahkan zat warna naftol dari limbah. Selama proses elektrokoagulasi logam seng mampu membentuk Zn(OH)2 yang berperan sebagai adsorben zat warna. Karena floks Zn(OH)2 mampu mengadsorpsi zat warna naftol sehingga zat warna dapat dipisahkan dari limbah. Pada proses elektrokoagulasi dilakukan penentuan kondisi terbaik yang meliputi potensial aplikasi, variasi pH dan waktu elektrolisis. Hasil penelitian menunjukkan bahwa diperoleh potensial aplikasi sebesar 7 volt dengan pH terbaik 12 dengan waktu elektrolisis selama 20 menit. Pada temperatur kamar, elektrokoagulasi limbah cair batik memberikan penurunan absorbansi sebesar 97,64 %, sedangkan penurunan kandungan COD, TSS dan kekeruhan masing-masing adalah 80,38 %, 96,38 % dan 97,61 %. Pada uji FTIR menunjukkan adanya kemiripan serapan yang muncul antara limbah sebelum elektrolisis dan endapan hasil elektrolisis. Hal ini menunjukkan bahwa sebagian besar zat warna telah dapat dipisahkan dari limbah cair dan metode elektrokoagulasi dapat diaplikasikan untuk mengatasi limbah cair berwarna.

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Keywords: limbah batik; elektrokoagulasi; seng bekas

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Section: Research Articles

Language : ID

In Vol 12, No 2 (2009): Volume 12 Issue 2 Year 2009

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