Abstract
Research on metal adsorption isotherms with activated carbon oil palm empty fruit bunches in liquid waste. Oil palm empty fruit bunches are used as adsorbent for metal absorption. Oil palm empty fruit bunches are prepared at 105O C for 24 hours to get a constant weight then are characterized by SEM. Oil palm empty fruit bunches are heated at temperatures (400O C – 700O C) to get activated carbon. Re-characterization using SEM at optimum conditions shows that the pore surface is expanding. Then with a batch method for metal absorption (Cu, Pb, Hg) and analyzed using AAS. The most common absorption of activated carbon of oil palm empty fruit bunches is Cu (II). Based on the Langmuir and Freundlich R2 models close to 1, which means that multi-layer adsorption occurs.
Highlights
Research on metal adsorption isotherms with activated carbon oil palm empty fruit bunches in liquid waste
Based on the Langmuir and Freundlich R2 models close to 1, which means that multi-layer adsorption occurs
Prosedur penelitian artinya terjadi pertambahan luas pada volume pori
Summary
Research on metal adsorption isotherms with activated carbon oil palm empty fruit bunches in liquid waste. Salah satu metode yang digunakan yaitu adsorpsi. Karbon aktif adalah salah satu jenis adsorben yang digunakan dan banyak dikembangkan untuk adsorpsi logam berat karena memiliki kapasitas adsorpsi yang besar dan dapat diregenerasi ulang.[2] Karbon aktif dapat diperoleh dari bahan-bahan yang tidak terpakai dan keberadaannya melimpah. Tandan kosong kelapa sawit diolah untuk menghasilkan karbon aktif melalui pemanasan yang tinggi. Data yang dapat diperoleh dari model isoterms adsorpsi dapat digunakan untuk menentukan parameter termodinamika seperti perubahan energi bebas Gibbs (∆G), perubahan entalpi (∆H) dan perubahan entropi (∆S).
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