การเก็บกลับคืนโลหะอิออนด้วยกระบวนการซีเมนเตชันโดยใช้ตัวกลางร่วมเหล็ก/อะลูมิเนียม

• Main Author: อรุณวรรณ เต้าทิพย์ภูมิรักษ์
• Other Authors: ดาวัลย์ วิวรรธนะเดช
• Format: Theses and Dissertations
• Language: Thai
• Published: จุฬาลงกรณ์มหาวิทยาลัย 2013
• Subjects: ไอออนโลหะ; ทองแดง > การนำกลับมาใช้ใหม่; โลหวิทยาสารละลาย; Metal ions; Copper > Recycling; Cementation (Metallurgy); Hydrometallurgy
• Online Access: https://digiverse.chula.ac.th/Info/item/dc:42811
• Institution: Chulalongkorn University

Many processes in industry produce not only their desirable products, but also by-products and wastes needed well management or disposal. Utilization or recovery of mineral resource from these wastes is one way to reduce wastes in line with conservation of mineral resources. Cementation process is a hydrometallurgical process widely used for waste water treatment and/or mineral resource recovery from industrial wastes. In the present study, recovery of copper ions by cementation together with electrochemical processes using synthetic Fe/Al Co-substrate was investigated upon combination of Fe magnetic property and Al reducing property. The study found that 1 M FeCl2.4H2O, 1.6 M NaCl and 0.04 M HCl at Contact time 3 hours was the optimal condition to synthesize the Fe/Al Co-substrate when compared with other conditions. The Fe/Al Co-substrate also showed that iron was coated on aluminium surface by means of XRD analysis and provided the adsorbed amount of Fe with 8.2% by means of ICP-OES. Such Fe/Al Co-substrate was used for copper cementation. Percent recovery of aluminium powder and the Fe/Al Co-substrate were demonstrated. The series of experiment were 98.6 and 99.1%, respectively. Hence, there was no significant impact of iron on the cementation process. After the cementation, these metals ,namely: copper iron and aluminium, could be easily separated each other by using the magnetic property.