Amonium yang sering kali hadir di sungai, tasik dan kolam telah menjadi perhatian utama di seluruh dunia. Hal ini dapat menyumbang kepada eutrofikasi yang akan menyebabkan penurunan oksigen di dalam air. Seterusnya, akan membahayakan kehidupan air. Dalam projek ini, amonium telah dijerap dari sisa domestik dan air lindi melalui proses penjerapan. Sisa lumpur aktif yang diperolehi dari rawatan sisa kilang kelapa sawit tempatan digunakan sebagai adsorben yang berkos murah. Penjerapan amonium dilakukan dengan memvariasikan parameter seperti pH, dos adsorben dan suhu. Nilai pH yang paling berkesan untuk menjerap ammonium dari kedua-dua air sisa domestik dan air lindi ke sisa lumpur aktif adalah 5. Kewujudan kumpulan O-H pada permukaan sisa lumpur aktif adalah dibuktikan melalui analisis Fourier Transmisi Spektroskopi Inframerah (FTIR). Peningkatan dos adsorben meningkatkan penjerapan amonium dari air sisa domestik dan lindi kerana peningkatan luas permukaan adsorben. Penjerapan amonium sama ada dari air sisa domestik dan air lindi menurun dengan suhu meningkat, menunjukkan bahawa proses itu eksotermik Kinetik analisis menunjukkan bahawa jerapan amonium adalah lebih baik dijelaskan mengikut tertib-kedua-tiruan. Regenerasi sisa lumpur aktif adalah kos-berkesan kerana sisa lumpur aktif dapat digunakan semula selepas proses ini.
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Ammonium compound frequently presence in rivers, lakes and ponds has become a major concern throughout the world. It can contribute to eutrophication leading to oxygen depletion in water. This will cause harmful to aquatic life. In this project, ammonium was removed from domestic wastewater and leachate by adsorption process. Waste activated sludge collected from a local palm oil mill effluent treatment plant was used as a low cost adsorbent. The adsorption of ammonium was carried out by varying the parameters such as pH, adsorbent dosage and temperature. The most effective pH value for ammonium removal from both domestic wastewater and leachate onto waste activated sludge was 5. The presence of O-H group on the surface waste activated sludge was proved by Fourier Transmission Infrared Spectroscopy (FTIR) analysis. An increase in adsorbent dosage increased the percent removal of ammonium from both domestic wastewater and leachate due to the increase in adsorbent surface area. Removal of ammonium from both domestic wastewater and leachate decreased with the increase temperature indicate that the process was exothermic. Kinetic analysis showed that the adsorption of ammonium on waste activated sludge was best described by pseudo- second order. Regeneration of waste activated sludge was cost-effective process because waste activated sludge can be reused after this process.
Adsorption study of ammonium from domestic wastewater and leachate using waste activated sludge_Nurul Azwin Burhanuddin_K4_2011_NI