TY - JOUR
T1 - Resource reuse of spent pickle acid by mineralization process
AU - Wu, Jun Yi
AU - Wang, Shih Chung
AU - Chang, Fang Chih
AU - Chen, Wei Sheng
AU - Tsai, Min Shing
N1 - Funding Information:
Financial support by the Ministry of Economic Affairs of R.O.C. is gratefully acknowledged.
PY - 2014/1
Y1 - 2014/1
N2 - The spent pickle acid was collected from metal surface treatment factory. The pH of spent pickle acid was lower than 1.0, and the total concentration of ferrous ion was 186 g/L. Firstly, the lower activity of metal in the spent pickle acid solution was displaced by cementation process (pre-treatment). After cementation scraped iron, the coagulant agent (poly aluminum chloride (PAC)) was added to the solution. Then, the pH of the solution was adjusted to 4.5 by ammonia to remove SiO2, P, and other impurities. Finally, the mineralization process was proceeded at pH 4.0 and 60°C with H2O2. X-ray diffraction (XRD) analysis shows that the mainly crystalline phase of the mineral product was γ-FeOOH. The high purity of Fe2O3 has been obtained by calcination from mineral product. Additionally, the economic evaluation results also show that the mineralization process was economic feasible. Therefore, this method could be applied to the metal surface treatment industry and printed circuit board manufacturing for recycling waste acid lotion.
AB - The spent pickle acid was collected from metal surface treatment factory. The pH of spent pickle acid was lower than 1.0, and the total concentration of ferrous ion was 186 g/L. Firstly, the lower activity of metal in the spent pickle acid solution was displaced by cementation process (pre-treatment). After cementation scraped iron, the coagulant agent (poly aluminum chloride (PAC)) was added to the solution. Then, the pH of the solution was adjusted to 4.5 by ammonia to remove SiO2, P, and other impurities. Finally, the mineralization process was proceeded at pH 4.0 and 60°C with H2O2. X-ray diffraction (XRD) analysis shows that the mainly crystalline phase of the mineral product was γ-FeOOH. The high purity of Fe2O3 has been obtained by calcination from mineral product. Additionally, the economic evaluation results also show that the mineralization process was economic feasible. Therefore, this method could be applied to the metal surface treatment industry and printed circuit board manufacturing for recycling waste acid lotion.
UR - http://www.scopus.com/inward/record.url?scp=84893819877&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84893819877&partnerID=8YFLogxK
U2 - 10.1080/19443994.2013.826401
DO - 10.1080/19443994.2013.826401
M3 - Article
AN - SCOPUS:84893819877
VL - 52
SP - 1086
EP - 1092
JO - Desalination and Water Treatment
JF - Desalination and Water Treatment
SN - 1944-3994
IS - 4-6
ER -
