Advanced Oxidation Process (AOP) by Fenton reaction is one of the options to removed complex organic pollutants and decolourized the wastewater. Many researches have been done to upgrade the performance of treatment plant for palm oil mill effluent as the production of palm oil mill effluent increase with increase production of Crude Palm Oil (CPO). The polishing step is one of the important steps to remove the color the wastewater to avoid eutrophication problem in the water river. In this study, the decolorization of palm oil mill effluent (POME) and aerobically treated palm oil mill effluent (AT-POME) were investigated with the aerated Fenton process. The quality of the wastewater can be analysis on four major categories which is organics, nutrients, solids and physical properties. The performance of aerated Fenton process in this study was analyzed by organics categories through Chemical Oxygen Demand (COD) test and physical properties though color and turbidity removal. The aerated Fenton process able to remove 49% color, 71% of turbidity and 76% of COD content in palm oil mill effluent after treated with 3 mM of ferrous sulfate hepthahydrate and 20 mM of hydrogen peroxide for 140 minutes of reaction with initial pH 2.5±0.5. On the other hand, reaction of 2 mM of ferrous sulfate hepthahydrate with 40 mM of hydrogen peroxide able to decolourized 92% color of aerobically treated palm oil mill effluent at initial pH 2.5 ± 0.5, removed 67.1% of its initial turbidity and also removed 87% of its COD content after treated with help of aerated system for 140 minutes. The effect of liquid-liquid interaction between hydrogen peroxide and wastewater cause the reaction of Fenton process without adding of ferrous sulfate hepthahydrate shows a positive result but in the slow rate of reaction with low percentage of removal. The kinetics rate constant (k) of decolourization efficiency at pH 2.5 ± 0.5 were found at 5.8 x 10-3 min-1 and 1.2 x 10-3 min-1 for POME and AT-POME, respectively. Lignin, 1˚, 2˚ amines and amides, carboxylic acids, aromatics amines and nitro compound are detected by Fourier Transform Infrared (FT-IR) analysis contain inside POME and also AT-POME.
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Proses pemajuan pengoksidaan melalui reaksi Fenton adalah salah satu pilihan untuk membuang pencemaran organik kompleks dan penguraian warna untuk air sisa. Banyak penyelidikan telah dijalankan untuk meningkatkan prestasi loji rawatan untuk efluen kilang minyak kelapa sawit kerana peningkatan pengeluaran minyak sawit mentah akan menyebabkan peningkatan jumlah penghasilan efluen kilang kelapa sawit. Proses pengilapan adalah salah satu langkah penting untuk menghilangkan warna air sisa untuk mengelakkan masalah eutrofikasi berlaku di sungai berdekatan. Di dalam penyelidikan ini, penguraian warna untuk efluen kilang minyak kelapa sawit dan efluen minyak kelapa sawit yang telah dirawat secara anarobik telah disiasat dengan mengunakan proses Fenton berudara. Kualiti air sisa boleh di analisa melalui empat kategori utama iaitu organik, nutrien, pepejal dan ciri-ciri fizikal. Prestasi Fenton proses berudara di dalam pembelajaran ini telah dianalisa dengan organic kategori melalui ujian permintaan oksigen kimia dan ciri-ciri fizikal melalui pembuangan warna dan kekeruhan. Fenton proses berudara boleh membuang 49% warna, 71% kekeruhan dan 76% ujian kandungan permintaan oksigen kimia di dalam efluen kilang minyak kelapa sawit selepas dirawat dengan 3mM ferus sulfat hepthahydrate dan 20 mM hidrogen peroksida selepas reaksi selama 140 minit dengan permulaan pH 2.5 ± 0.5. Selain daripada itu, reaksi 2 mM ferus sulfat hepthahydrate dan 40mM hydrogen peroksida boleh menguraikan 92% warna di dalam efluen minyak kelapa sawit yang telah dirawat secara anarobik dengan pH 2.5±0.5 serta membuang 67% kekeruhan dan juga membuang 87% kandungan permintaan oksigen kimia selepas rawatan dengan bantuan system berudara selama 140 minit. Kesan keatas interaksi cecair-cecair antara hidrogen peroksida dan air sisa menyebabkan reaksi Fenton proses tanpa kehadiran ferus sulfat hepthahydrate menunjukkan keputusan positif tetapi di dalam kadar tindak balas secara perlahan dengan peratus pembuangan yang rendah. Kadar kinetic berterusan (k) untuk penyembunyian warna pada permulaan pH 2.5±0.5 telah dijumpai pada 5.8 x 10-3 min-1 and 1.2 x 10-3 min-1 untuk efluen kilang minyak kelapa sawit dan efluen minyak kepala sawit yang telah dirawat secara anarobik, masing-masing. Lignin, 1˚,2˚ amines and amides, asid karboksilik, aromatic amines dan nitro kompoun telah dikesan oleh di dalam efluen minyak kepala sawit dan efluen minyak kelapa sawit yang telah dirawat secara anarobik melalui analisa FT-IR.
Decolorization of palm oil mill effluent (pome) and aerobically treated palm oil mill effluent (at-pome) by aerated fenton process / Azie Nurul Ain Ramlan