Abidin, Nurul Aini Zainol (2018) Performance Of Composite Adsorbent-Limestone Activated Carbon Alginate In Treating River Waterr. Masters thesis, Universiti Sains Malaysia.
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Abstract
Pertumbuhan pesat pusat-pusat bandar memerlukan aktiviti ekonomi yang dinamik untuk membangunkan negara. Walaubagaimanapun, ia telah membawa kepada peningkatan pencemaran air sungai yang mengandungi pelbagai bahan pencemar organik dan bukan organik yang sering melebihi had yang dibenarkan standard air minuman. Penggunaan penjerap untuk air sungai telah banyak dijalankan. Namun, tiada data terkini tentang pembangunan penjerap komposit mesra alam sekitar yang diperbuat daripada karbon teraktif (AC) dan batu kapur (LS) serta penggunaan rumpai laut alginat. Dalam kajian ini, prestasi penjerap komposit telah disiasat untuk pra-rawatan air minuman. Penjerap komposit disintesis untuk penjerapan warna dan kekeruhan dari air sungai. Ciri-ciri pendahulu individu dan penjerap komposit untuk rawatan air sungai diselidiki. Pemilihan nisbah campuran terbaik diperiksa dalam kajian berkelompok penjerapan. Kesan dos penjerap dan masa sentuhan diselidiki. Model isoterma dan kinetik untuk penjerap komposit juga ditentukan. Kajian turas dasar tetap disiasat pada bahagian terakhir. Sampel air sungai dikumpulkan dari Sungai Kerian yang terletak di Lubok Buntar, Bandar Baharu, Kedah. Hasilnya menunjukkan, nisbah campuran (AC: LS) 3:7 adalah berkesan dalam menghilangkan lebih daripada 92.6% warna dan 89.7% kekeruhan. Hasilnya juga mendedahkan bahawa kapasiti maksimum penjerapan satu lapisan penjerap komposit untuk warna dan kekeruhan adalah 0.446 PtCo/g dan 5.155 NTU/g, masing-masing. Selain itu, kinetik penjerapan menggambarkan kesesuaian menggunakan model kinetik pseudo-tertib-kedua. Isoterma Freundlich didapati sesuai dengan data penjerapan keseimbangan. Berdasarkan lengkung terobosan, titik terobosan untuk warna dan kekeruhan kurang dari 6 dan kurang daripada 1 jam, masing-masing. Titik tidak berkesan untuk warna dan kekeruhan ialah masing-masing 20 dan 1223 jam. _______________________________________________________________________________________________________ The rapid growth of urban centers required the dynamic economic activities to develop a nation. However, it leads to the increased pollution of river water which contains wide variations of organic and inorganic pollutants that often exceed the permissible limit of drinking water standard. Application of adsorbents for river water has been studied for years. However, there is no data available on the development of composite adsorbent synthesized from activated carbon (AC) and limestone (LS) as the core materials and alginate binder. In this study, the performance of composite adsorbent was investigated for pre-treatment of drinking water. Composite adsorbent was synthesized for the adsorption of color and turbidity from river water. The characteristics of individual precursor and composite adsorbent for the treatment of river water were investigated. The selection of the best mixture ratio was examined in adsorption batch study. The effects of adsorbent dosage and contact time were investigated. The suitable model of isotherms and kinetics for the composite adsorbent were also discovered. The performance of composite adsorbent using fixed-bed column was also investigated at the last part. The river water samples were collected from Kerian River located at Lubok Buntar, Bandar Baharu, Kedah. The results identified, the mixture ratio (AC: LS) of 3:7 was effective in removing color and turbidity over 92.6% and 89.7%, respectively. The results revealed that the maximum monolayer adsorption capacity of composite adsorbent for the adsorption of color and turbidity were 0.446 PtCo/g and 5.155 NTU/g, respectively. Besides, the adsorption kinetics illustrated the suitability of applying the pseudo-second-order kinetic model. The Freundlich isotherm was found well fitted to the equilibrium adsorption data. Based on the breakthrough curve, the breakthrough point for color and turbidity were less than 6 and less than 1 hour, respectively. The ineffective point for color and turbidity were 20 and 1223 hours, respectively.
| Item Type: | Thesis (Masters) |
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| Additional Information: | Full text is available at http://irplus.eng.usm.my:8080/ir_plus/institutionalPublicationPublicView.action?institutionalItemId=4684 |
| Subjects: | T Technology T Technology > TA Engineering (General). Civil engineering (General) > TA1-2040 Engineering (General). Civil engineering (General) |
| Divisions: | Kampus Kejuruteraan (Engineering Campus) > Pusat Pengajian Kejuruteraan Awam (School of Civil Engineering) > Thesis |
| Depositing User: | Mr Mohd Jasnizam Mohd Salleh |
| Date Deposited: | 12 Jun 2019 08:51 |
| Last Modified: | 12 Jun 2019 08:51 |
| URI: | http://eprints.usm.my/id/eprint/44568 |
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