Home | Contact Us | Sitemap | 中文 | CAS | Director's Email
 
Location:Home > Papers > Recent Papers
Successful control of phosphorus release from sediments using oxygen nano-bubble-modified minerals TEXT SIZE: A A A
Due to the limited aeration capacity of current aeration techniques at the sediment-water interface (SWI), we developed a specialized aeration material aimed at the SWI, known as oxygen nano-bubble-modified minerals (ONBMMs). Furthermore, we simulated its aeration efficiency at the SWI and the control effects of internal phosphorous (P) release under anaerobic conditions during 20 days. High resolution diffusive gradients in thin films (DGT) and Planar luminescent optode (PO) technologies were used to measure the temporal variation of reactive P, reactive Fe (II) and dissolved oxygen (DO) of the SWI. These results show that ONBMMs can effectively increase the content of DO at the SWI and decrease the release flux of internal P from sediments. The use of ONBMMs reduced 97.9% of the soluble reactive P concentration of the overlaying water and reduced the release flux of DGT-P from sediments by 78.9%. Inhibition of reductive dissolution of Fe-P from sediments was the primary principle that effectively inhibited the input of internal P by ONBMMs. Therefore, ONBMMs are potentially promising technology for the treatment of internal P pollution in eutrophic lakes. (C) 2019 Elsevier B.V. All rights reserved.
 

Publication name

 SCIENCE OF THE TOTAL ENVIRONMENT, 663 654-661; 10.1016/j.scitotenv.2019.01.265 MAY 1 2019

Author(s)

 Yu, Pingping; Wang, Jingfu; Chen, Jingan; Guo, Jianyang; Yang, Haiquan; Chen, Quan

Corresponding author(s) 

 WANG Jingfu
 wangjingfu@vip.skleg.cn  
 Chinese Acad Sci, State Key Lab Environm Geochem, Inst Geochem, Guiyang 550081, Guizhou, Peoples R China. 

View here for the details 

Copyright © Institute Of Geochemistry, Chinese Academy of Sciences All Rights Reserved.
Address: 99 West Lincheng Road, Guanshanhu District, Guiyang, Guizhou Province 550081, P.R.China
Tel: +86-851-85895239 Fax: +86-851-85895239 Email: web_en@mail.gyig.ac.cn