Masalah pencemaran air menjadi kebimbangan penting terutamanya pencemaran pewarna yang merosakkan alam dan kesihatan manusia. Oleh itu, kajian penyelidikan ini dijalankan untuk meneroka penggunaan karbon teraktif (CSAC) yang disediakan daripada tumpurung kelapa menggunakan radiasi gelombang mikro sebagai penjerap untuk penjerapan pewarna Metilena Biru (MB) dan Metil Merah (MR) untuk mengurangkan pencemaran pewarna. Kajian penjerapan turus lapisan tetap dinamik telah dijalankan untuk mengetahui keadaan optimum bagi proses penjerapan yang dijalankan dengan menggunakan beberapa parameter yang berbeza iaitu kepekatan awal pewarna (10-40 ppm), kadar suapan aliran (4-10 ml / min) dan ketinggian lapisan karbon (2-4 cm). Secara kesimpulannya, masa bulus lebih cepat apabila kepekatan awal pewarna dan kadar kelajuan aliran masuk lebih tinggi dan ketinggian lapisan karbon lebih pendek. Selain itu, analisa dinamik turus juga dilakukan menggunakan model Thomas, MDR, Adams-Bohart dan BDST. Didapati bahawa model Thomas dan MDR amat serasi untuk data eksperimen penjerapan jika dibandingkan dengan model analisis Adams-Bohart dan BDST. Akhirnya, kajian penjerapan skala naik dijalankan untuk meramalkan zon pemindahan jisim dan profil kepekatan pada lapisan karbon. Adalah diketahui bahawa, ketinggian lapisan karbon yang digunakan (HB) telah berkurang apabila kepekatan awal pewarna dan kadar suapan aliran masuk meningkat tetapi ketinggian lapisan karbon yang digunakan (HB) meningkat apabila ketinggian lapisan karbon meningkat.
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Water contamination problems become a vital concern particularly dye pollution which is destroying the nature and human health. Therefore, this research study was carried out to discover the usage of activated carbon (CSAC) which is prepared from the coconut shell using microwave as an adsorbent for the adsorption of Methylene Blue (MB) and Methyl Red (MR) to reduce the dye pollution. Dynamic fixed bed adsorption study was conducted to find out the optimum conditions for the adsorption process to be carried out using few different parameters which are initial dye concentration (10-40 ppm), inlet flowrate of dye solution (4-10 ml/min) and bed height of adsorbent (2-4 cm). It was concluded that the breakthrough time was faster when the initial dye concentration and inlet flowrate is higher and the bed height is shorter. Besides that, column dynamics analysis was also performed using Thomas, MDR, Adams-Bohart and BDST model. It was analysed that Thomas and MDR analysis model fitted well to the experimental adsorption data as compared to Adams-Bohart and BDST analysis model. Finally, the scale up adsorption column study was conducted to predict the mass transfer zone and concentration profile in the bed. It was found out that the used up bed height (HB) decreases as the initial dye concentration and flowrate increases but the used up bed height (HB) increases as the bed height of the adsorbent increases.
Scale up and dynamic binary adsorption studies of methyl red and methylene blue on microwave-assisted activated carbon / Kesavan Mutayah