Color Removal from Synthetic Dye And Textile Wastewaters Using Adsorbent Prepared From Psyllium Husk

• मुख्य लेखक: Tayeh, Somia M. O.
• स्वरूप: थीसिस
• भाषा: अंग्रेज़ी
• प्रकाशित: 2012
• विषय: TA Engineering (General). Civil engineering (General)
• ऑनलाइन पहुंच: http://eprints.usm.my/40672/

Penyingkiran warna dari efluen tekstil telah diberikan banyak perhatian dalam beberapa tahun lepas oleh proses penjerapan menggunakan adsorbents kos rendah. Dalam kajian ini, bahan penjerap sekam psilium/CoFe2O4 (PH/CFO), disintesiskan melalui satu langkah mudah laluan refluks dan telah digunakan sebagai bahan penjerap untuk penyingkiran warna dari pelarut pencelup sintetik dan air buangan tekstil. Kajian kelompok menunjukkan bahawa kecekapan penyingkiran terbaik bahan penjerap berada di pH 9.0, suhu 30oC (untuk pelarut sintetik) dan 40oC (untuk air buangan tekstil), kadar goncangan sebanyak 150 rpm (untuk pelarut sintetik) dan 280rpm (untuk air buangan tekstil), dan masa sentuh 2 jam. Bahan penjerap PH/CFO menunjukkan kecekapan penyingkiran lebih tinggi pada kecekapan awal pencelup yang tinggi. Pada masa yang sama, kecekapan bahan penjerap bertambah dengan berkurangnya jumlah bahan penjerap yang digunakan. Data eksperimen berpadanan baik dengan model Langmuir dengan keupayaan jerapan satu lapisan 188.7mg/g. Penjerapan ilmu kinetik didapati mengikuti model kinetik pseudo- aturan kedua. Analisis saiz partikel dan pemerhatian SEM disediakan dan dibelanjakan penjerap telah dijalankan, analisis saiz zarah menunjukkan taburan saiz zarah yang homogenus untuk kedua-dua sampel. Pemerhatian SEM menunjukkan bahawa zarah pewarna yang didepositkan seragam ke permukaan PH/CFO penjerap. _______________________________________________________________________________________________________ Color removal from textile effluents has been given much attention in the last few years by the adsorption process using low cost adsorbents. In this study, psyllium husk/CoFe2O4 adsorbent, (PH/CFO), was synthesized by a simple one-step refluxing route and was used as adsorbent for the removal of color from synthetic dye solution and textile wastewater. The batch experiments showed that the best removal efficiency of the adsorbent was at pH 9.0, temperature 30oC (for synthetic wastewater) and at 40oC (for textile wastewater), shaking rate 150 rpm (for synthetic wastewater) and 280rpm (for textile wastewater), and at contact time 2 hours. The PH/CFO adsorbent showed higher removal efficiency at higher initial dye concentrations. At the same time, the adsorbent efficiency was increasing by decreasing the amount of adsorbent used. The experimental data fitted well with the Langmuir model with a monolayer adsorption capacity of 188.7mg/g. The adsorption kinetics was found to follow pseudo-second-order kinetic model. The particle size analysis and SEM observations of prepared and spent adsorbent where carried out, particle size analysis showed a homogenous particle size distribution for both samples. SEM observations showed that the dye particles deposited uniformly onto the surface of PH/CFO adsorbent.