Dissolved metal adsorption capacities and fractionation in filter materials for use in stormwater bioretention facilities.

ABSTRACT: The dissolved metal adsorption and association was determined for ten different filter materials recommended and/or implemented in bioretention facilities. Batch adsorption and batch kinetic experiments were performed at lab-scale using both single and multi-metal solutions. Metal strengths and association were determined by sequential extraction analysis. All materials adsorbed metals and 90% of adsorption occurred within 1 h. However, as metal solutions became more complex, adsorption behavior changed. Generally, filter materials classified as sand with a naturally high pH, relatively low organic matter (OM) content and large specific surface area seem to be good choices for removing dissolved metals. Additionally, a chalk additive might improve metal adsorption whereas biochar did not s

SUBMITTER: Soberg LC 

PROVIDER: S-EPMC6614605 | biostudies-literature | 2019 Aug

REPOSITORIES: biostudies-literature