کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5144728 | 1496869 | 2017 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effect of power ultrasound on crystallization characteristics of magnesium ammonium phosphate
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی (عمومی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Magnesium ammonium phosphate (MAP) crystallization could be utilized for the recovery of phosphorus from wastewater. However, the effectiveness of the recovery is largely determined by the crystallization process, which is very hard to be directly observed. As a result, a specific ultrasonic device was designed to investigate the crystallization characteristics of MAP under various ultrasonic conditions. The results demonstrated that the metastable zone width (MZW) narrowed along with the rising of the ultrasonic power. Similarly, for the 6Â mM MAP solution, with the ultrasonic power gradually enhanced from 0Â W to 400Â W, the induction time was shortened from 340Â s to 38Â s. Meanwhile, the crystallization rate was accelerated till the power reached 350Â W, and then remained a constant value. It can be observed from the scanning electron microscopy (SEM), the MAP crystal became bigger in size as well as the crystal size distribution (CSD) became broad and uneven, with the increase of ultrasonic power. The results indicate that the crystallization process enhanced by power ultrasound could be used as an effective method to eliminate and recover the phosphorus from wastewater.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ultrasonics Sonochemistry - Volume 36, May 2017, Pages 123-128
Journal: Ultrasonics Sonochemistry - Volume 36, May 2017, Pages 123-128
نویسندگان
Liping Qiu, Liang Shi, Zhi Liu, Kang Xie, Jiabin Wang, Shoubin Zhang, Qianqian Song, Liquan Lu,