การสกัดไอออนทองแดงจากสารละลายเจือจางมากด้วยเยื่อแผ่นเหลวที่พยุงด้วยเส้นใยกลวง

• Main Author: อิศรา เกษมเศรษฐ
• Other Authors: อุรา ปานเจริญ
• Format: Theses and Dissertations
• Language: Thai
• Published: จุฬาลงกรณ์มหาวิทยาลัย 1998
• Subjects: ทองแดง; ไอออน; เยื่อแผ่นเหลว
• Online Access: https://digiverse.chula.ac.th/Info/item/dc:58821

This research studied the performance of extraction of copper ion from an extremely dilute solution with hollow fiber supported liquid membranes. Various factors affecting this extraction system were studied, viz. the concentrations of extractant in membrane phase in the range below 25 V/V%, the types of extractant between D2EHPA, LIX84-I and LIX 860-I, the concentrations of copper ion in feed solution in the range of 1 ppm to 100 ppm, flow patterns of feed solution in tube side and in shell side of hollow fiber supported liquid membranes, pH of feed solution controlled with buffer solution, and circulation of strip solution. Kerosene was used as an organic solution while 0.1 mol/l sulfuric acid was used as a strip solution. From the experiments, the ability of copper ion transportation was increased when concentration of extractant was increased. LIX-type extractant showed better performance than D2EHPA. Copper ion transportation was increased as concentration of copper ion in feed solution was increased. Flow pattern of feed solution in tube side and in shell side of hollow fiber module had no influence in the performance of the system. Copper ion transportation was increased when pH of feed solution was kept at 5 by buffer solution. The copper ion transportation could be occurred appropriately by using small amount of strip solution in circulation mode.