ridm@nrct.go.th   ระบบคลังข้อมูลงานวิจัยไทย   รายการโปรดที่คุณเลือกไว้

Air stripping process for ammonia recovery from source-separated urine : modeling and optimization

หน่วยงาน Nanyang Technological University, Singapore

รายละเอียด

ชื่อเรื่อง : Air stripping process for ammonia recovery from source-separated urine : modeling and optimization
นักวิจัย : Liu, Bianxia , Giannis, Apostolos , Zhang, Jiefeng , Chang, Victor W.-C. , Wang, Jing-Yuan
คำค้น : DRNTU::Engineering::Civil engineering::Water resources , DRNTU::Engineering::Environmental engineering::Waste management
หน่วยงาน : Nanyang Technological University, Singapore
ผู้ร่วมงาน : -
ปีพิมพ์ : 2557
อ้างอิง : Liu, B., Giannis, A., Zhang, J., Chang, V. W. C., & Wang, J. Y. (2014). Air stripping process for ammonia recovery from source-separated urine : modeling and optimization. Journal of chemical technology & biotechnology, in press. , 0268-2575 , http://hdl.handle.net/10220/24208 , http://dx.doi.org/10.1002/jctb.4535
ที่มา : -
ความเชี่ยวชาญ : -
ความสัมพันธ์ : Journal of chemical technology & biotechnology
ขอบเขตของเนื้อหา : -
บทคัดย่อ/คำอธิบาย :

BACKGROUND: The air stripping process has been widely used to treat wastewater to prevent undesirable substances from impairing the quality of water sources. This study aimed to investigate the operational and economic aspects of air stripping for ammonia recovery from source separated human urine. RESULTS: The typical two-film model fails to explain the influence of pH on ammonia recovery. For that reason, modifications to the two-film model were applied to involve ammonia dissociation during mass transfer. It was found that increasing pH enhanced ammonia removal efficiency by promoting the free ammonia fraction in the solution. In addition, high air flow rate and temperature accelerated the stripping process due to the increase in mass transfer coefficient. From the economic point of view, unit operating cost was determined for 80% ammonia recovery. Results indicated that increasing air flow rate and temperature could reduce unit operating cost, whereas high pH could induce high unit operating cost due to the increase in chemical input. CONCLUSION: The modified two-film model can precisely estimate the critical values for an economic, efficient stripping process. However, a test-bedding study is required to validate the experimental findings.

บรรณานุกรม :
Liu, Bianxia , Giannis, Apostolos , Zhang, Jiefeng , Chang, Victor W.-C. , Wang, Jing-Yuan . (2557). Air stripping process for ammonia recovery from source-separated urine : modeling and optimization.
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Liu, Bianxia , Giannis, Apostolos , Zhang, Jiefeng , Chang, Victor W.-C. , Wang, Jing-Yuan . 2557. "Air stripping process for ammonia recovery from source-separated urine : modeling and optimization".
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Liu, Bianxia , Giannis, Apostolos , Zhang, Jiefeng , Chang, Victor W.-C. , Wang, Jing-Yuan . "Air stripping process for ammonia recovery from source-separated urine : modeling and optimization."
    กรุงเทพมหานคร : Nanyang Technological University, Singapore, 2557. Print.
Liu, Bianxia , Giannis, Apostolos , Zhang, Jiefeng , Chang, Victor W.-C. , Wang, Jing-Yuan . Air stripping process for ammonia recovery from source-separated urine : modeling and optimization. กรุงเทพมหานคร : Nanyang Technological University, Singapore; 2557.