Environmental Science and Pollution Research

, Volume 23, Issue 1, pp 351–365

Variation of physicochemical properties of drinking water treatment residuals and Phoslock® induced by fulvic acid adsorption: Implication for lake restoration

  • Changhui Wang
  • He-Long Jiang
  • Huacheng Xu
  • Hongbin Yin
Research Article

DOI: 10.1007/s11356-015-5209-9

Cite this article as:
Wang, C., Jiang, HL., Xu, H. et al. Environ Sci Pollut Res (2016) 23: 351. doi:10.1007/s11356-015-5209-9

Abstract

The use of phosphorus (P) inactivating agents to reduce internal P loading from sediment for lake restoration has attracted increasing attention. Reasonably, the physicochemical properties of P inactivating agents may vary with the interference of various environmental factors, leading to the change of control effectiveness and risks. In this study, the effect of fulvic acid (FA) adsorption on the properties of two agents, drinking water treatment residuals (DWTRs) and Phoslock®, was investigated. The results showed that after adsorption, there was little change for the main structures of DWTRs and Phoslock®, but the thermostability of Phoslock®, as well as the particle size and settleability of the two agents decreased. The specific surface area and pore volume of DWTRs also decreased, while those of Phoslock® increased. Further analysis indicated that aluminum and iron in DWTRs were stable during FA adsorption, but a substantial increase of lanthanum release from Phoslock® was observed, in particular at first (P < 0.01). Moreover, the P immobilization capability of DWTRs had little change after FA adsorption, while the capability of Phoslock® after FA adsorption decreased in solutions (P < 0.001) and sediments (P < 0.1); interestingly, from the view of engineering application, the performance of Phoslock® was not substantially affected. Overall, each P inactivating agent had its own particular responses of the physicochemical properties to environment factors, and detailed investigations on the applicability of each agent were essential before practical application.

Keywords

Lake Phosphorus inactivating agent Fulvic acid Internal phosphorus loading Adsorption 

Supplementary material

11356_2015_5209_MOESM1_ESM.docx (1 mb)
ESM 1(DOCX 1062 kb)

Copyright information

© Springer-Verlag Berlin Heidelberg 2015

Authors and Affiliations

  • Changhui Wang
    • 1
  • He-Long Jiang
    • 1
  • Huacheng Xu
    • 1
  • Hongbin Yin
    • 1
  1. 1.State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and LimnologyChinese Academy of SciencesNanjingChina

Personalised recommendations