Abu Layang Ampas Tebu Hasil Aktivasi H2O2 sebagai Adsorben Zat Warna Naftolat As

FIRDANIA AYU NOVIARANI, Prof. Dr. Sri Juari Santosa, M.Eng. ; Dr. Eko Sri Kunarti, M.Si.

2014 | Skripsi | S1 KIMIA

Telah dilakukan kajian penggunaan abu layang ampas tebu hasil aktivasi H2O2 sebagai adsorben zat warna Naftolat As. Penelitian diawali dengan pemurnian BFA dari P.G. Madukismo, Yogyakarta dengan campuran HCl 0,1 M dan HF 0,3 M, kemudian BFA diaktivasi menggunakan H2O2 5 M. Penentuan kapasitas adsorpsi dan energi adsorpsi dilakukan dengan interaksi pada kondisi optimum yaitu pada variasi pH, variasi waktu kontak dan konsentrasi Naftolat As. Hasil kondisi optimum adsorpsi Naftolat As dengan BFA teraktivasi H2O2 5 M diperoleh pada pH 3, waktu kontak selama 180 menit, dan konsentrasi Naftolat As 100 mg/L. Analisis dengan FTIR menunjukkan bahwa BFA memiliki kandungan utama gugus fungsional -COOH dan Si-OH. Hasil analisis BFA setelah diberi perlakuan HCl-HF maupun H2O2 dengan XRD menunjukkan struktur BFA adalah amorf dengan 2 puncak karakteristik pada 2θ = 20o dan 21o yang mengindikasikan SiO2. Pada penelitian ini, proses adsorpsi Naftolat As oleh BFA teraktivasi H2O2 5 M mengikuti model kinetika Ho dengan kapasitas adsorpsi sebesar 2,54x10-4 mol/g dan energi adsorpsinya sebesar 33,40 kJ/mol. Hasil adsorpsi limbah cair yang mengandung Naftolat As oleh BFA teraktivasi menghasilkan kapasitas adsorpsi sebesar 13,2x10-4 mol/g.

Study of hydrogen peroxide activated bagasse fly ash as an adsorbent Naphtolat As dye have been done. The research was initiated by purification using a mixture of HF 0.1 M and HF 0.3 M of BFA from P.G. Madukismo, Yogyakarta, followed by activation using H2O2 5 M. The determination of adsorption capacity and energy of adsorption were conducted at optimum condition in pH variation, contact time variation and variation of Naptholat As concentration. The adsorption results of Naphtolat As by H2O2 5 M activated BFA at optimum condition was pH 3, the contact time was 180 minutes and Naphtolat As concentration was 100 mg/L. FTIR analysis showed that the BFA have main functional groups, they were -COOH and Si-OH. While the results of the XRD analysis showed that BFA structure was amorphous and after treated with HCl-HF and H2O2 showed that the two peaks characteristic at 2θ = 21o and 20o, indicating SiO2. The adsorption of Naphtlolat As by H2O2 activated BFA followed Ho kinetics model with the adsorption capacity was 2.54x10-4 mol/g and energy of adsorption was 33.40 kJ/mol. The results of adsorption capacity from liquid waste batik industrial was 13.2x10-4 mol/g.

Kata Kunci : adsorption, activated BFA, Naphtolat As, hydrogen peroxide