ADSORPSI-DESORPSI ZAT WARNA AZO JENIS REMAZOL BLACK B MENGGUNAKAN MEMBRAN POLIELEKTROLIT (PEC) KITOSAN-PEKTIN

Authors

  • Ni Putu Sri Ayuni
  • Ni Wayan Yuningrat
  • Ketut Yesi Andriani

DOI:

https://doi.org/10.23887/jstundiksha.v5i1.8277

Abstract

Abstrak Sekitar 2-50% dari zat warna azo yang digunakan selama proses pencelupan ini tidak mengikat serat dan langsung dilepaskan ke lingkungan melalui instalasi pengolahan limbah. Hal ini perlu dilakukan pengolahan limbah cair yang mengandung zat warna azo jenis Remazol Black B sebelum dibuang ke lingkungan. Penelitian ini bertujuan untuk mengetahui kondisi optimum membran PEC kitosan-pektin yang dapat digunakan untuk mengadsorpsi zat warna azo jenis Remazol Black B .Untuk memperoleh kondisi optimum akan dilakukan adsorpsi zat warna azo jenis Remazol Black B dengan variasi waktu kontak (5-150 menit), pH (5-9) dan konsentrasi larutan zat warna azo jenis Remazol Black B (5, 10, 15, 20, dan 25 mg/L). Untuk mengetahui karakteristik zat warna jenis Remazol Black B oleh membran PEC kitosan-pektin di analisis dengan persamaan isoterm adsorpsi Langmuir dan isoterm adsorpsi Freundlich sedangkan daya adsorpsi maksimum dari membran PEC kitosan pektin ditentukan dari kurva berdasarkan karakteristik membran yang diperoleh. Hasil penelitian menunjukkan bahwa adsorpsi zat warna azo jenis Remazol Black B terjadi pada kondisi optimum dengan pH 5, waktu 120 menit dan konsentrasi larutan zat warna azo jenis Remazol Black B 10 mg/L (62,75 %). Pola adsorpsi mengikuti pola adsorpsi isoterm Freundlich dengan daya adsorpsi maksimum 0,02 (mg/g). Untuk efisiensi desorpsi maksimal diperoleh pada larutan NaCl 1 M (11,17 %) Kata Kunci: adsorpsi, membran polielektrolit kitosan pektin, Remazol Black B Abstract Azo dyes produced approximately 2-50% from dying process were thrown through effluent to the environment without any treatment. The objective of this research were to know the optimum condition of PEC chitosan pectin membrane using to adsorp Remazol Black B with various contact time (5-150 min), pH (5-9) and Remazol Black B concentration (5, 10, 15, 20, dan 25 mg/L). Adsorption charactheristic of Remazol Black B by PEC chitosan pectin membrane were determined by Langmuir and Freundlich isotherm equation. Maximum capacity adsorption was determined by the graph of membrane characteristic. The results show that optimum condition of Remazol Black B adsorption by PEC chitosan pectin membrane at pH 5, 10 mg/L remazol black B for 120 minutes (62,75 %). The adsorption pattern is Freundlich isoterm with maximum capacity 0,02 (mg/g).Maximal Desorption efisiency at NaCl 1 M (11,17 %) Keywords : adsorption, PEC chitosan pectin membrane, Remazol Black B

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Issue

Vol. 5 No. 1 (2016)

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