Phosphorus removal and mechanisms by Zn-layered double hydroxide (Zn-LDHs)-modified zeolite substrates in a constructed rapid infiltration system.

ABSTRACT: This work presents novel materials, ZnFe-LDHs-modified (Zn²⁺ : Fe³⁺ molar ratio of 2 : 1 and 3 : 1) and ZnAl-LDHs-modified (Zn²⁺ : Al³⁺ molar ratio of 2 : 1 and 3 : 1) zeolites, which were synthesized under alkaline conditions via a co-precipitation method and coated in situ on original zeolites. The as-prepared LDHs-modified zeolites were used as substrates for a constructed rapid infiltration system (CRIS) to conduct purification experiments to investigate the phosphorus removal performance of all types of zeolites. The experimental results showed that the phosphorus removal rates of the Zn-LDHs-modified zeolites reached over 80%, which are superior to that of the original zeolites. Furthermore, isothermal adsorption and adsorptio

SUBMITTER: Zhang X 

PROVIDER: S-EPMC9076088 | biostudies-literature | 2019 Dec

REPOSITORIES: biostudies-literature