Zeolite-based monoliths for water softening by ion exchange/precipitation process.

ABSTRACT: In this work, the design of a monolithic softener obtained by geopolymer gel conversion is proposed. The softener used consists in a geopolymeric macroporous matrix functionalized by the co-crystallization of zeolite A and X in mixture. The dual nature of the proposed material promotes a softening process based on the synergistic effect of cation exchange and alkaline precipitation. A softening capacity of 90% and 54% for Ca²⁺ and Mg²⁺ respectively was attained in 24 h. In fact, the softener reported a Cation Exchange Capacity (CEC) value of 4.43 meq g^-1. Technical features such as density, porosity and mechanical resistance were also measured. The use of this monolithic softener can improve performance and sustainability of hardness removal from tap water,

SUBMITTER: Campanile A 

PROVIDER: S-EPMC8901846 | biostudies-literature | 2022 Mar

REPOSITORIES: biostudies-literature