@article{(Open Science Index):https://publications.waset.org/pdf/14257, title = {Ultrasound Assisted Method to Increase the Aluminum Dissolve Rate from Acidified Water}, author = {Wen Po Cheng and Chi Hua Fu and Ping Hung Chen and Ruey Fang Yu}, country = {}, institution = {}, abstract = {Aluminum salt that is generally presents as a solid phase in the water purification sludge (WPS) can be dissolved, recovering a liquid phase, by adding strong acid to the sludge solution. According to the reaction kinetics, when reactant is in the form of small particles with a large specific surface area, or when the reaction temperature is high, the quantity of dissolved aluminum salt or reaction rate, respectively are high. Therefore, in this investigation, water purification sludge (WPS) solution was treated with ultrasonic waves to break down the sludge, and different acids (1 N HCl and 1 N H2SO4) were used to acidify it. Acid dosages that yielded the solution pH of less than two were used. The results thus obtained indicate that the quantity of dissolved aluminum in H2SO4-acidified solution exceeded that in HCl-acidified solution. Additionally, ultrasonic treatment increased the rate of dissolution of aluminum and the amount dissolved. The quantity of aluminum dissolved at 60℃ was 1.5 to 2.0 times higher than that at 25℃.}, journal = {International Journal of Chemical and Molecular Engineering}, volume = {6}, number = {5}, year = {2012}, pages = {487 - 491}, ee = {https://publications.waset.org/pdf/14257}, url = {https://publications.waset.org/vol/65}, bibsource = {https://publications.waset.org/}, issn = {eISSN: 1307-6892}, publisher = {World Academy of Science, Engineering and Technology}, index = {Open Science Index 65, 2012}, }