Correlation Engine 2.0
Clear Search sequence regions

  • algal blooms (1)
  • alp (1)
  • aluminum (14)
  • ferron (1)
  • pac (1)
  • red tide (1)
  • Sizes of these terms reflect their relevance to your search.

    Polyaluminum chloride modified clay (PAC-MC) is a safe and efficient red tide control agent that has been studied and applied worldwide. Although it is well known that the distribution of hydrolytic aluminum species in PAC affects its flocculation, little is known about the influence of particulars aluminum species on the microalgae removal efficiency of PAC-MC; this lack of knowledge creates a bottleneck in the development of more efficient MCs based on aluminum salts. The ferron method was used in this study to quantitatively analyze the distributions of and variations in different hydrolytic aluminum species during the process of microalgae removal by PAC-MC. The results showed that Ala, which made up 5%-20% of the total aluminum, and Alp, which made up 15%-55% of the total aluminum, significantly affected microalgae removal, with Pearson's correlation coefficients of 0.83 and 0.89, respectively. Most of the aluminum in the PAC-MC sank rapidly into the sediments, but the rate and velocity of settlement were affected by the dose of modified clay. The optimal dose of PAC-MC for precipitating microalgae was determined based on its aluminum profile. These results provide guidance for the precise application of PAC-MC in the control of harmful algal blooms. Copyright © 2021. Published by Elsevier B.V.


    Xueyi Dong, Xihua Cao, Wenbin Jiang, Xiuxian Song, Zhiming Yu, Shitao Yu. Profiles of and variations in aluminum species in PAC-MC used for the removal of blooming microalgae. Journal of environmental sciences (China). 2021 Aug;106:76-82

    Expand section icon Mesh Tags

    Expand section icon Substances

    PMID: 34210441

    View Full Text