Efficient removal of ammonia-nitrogen in wastewater by zeolite molecular sieves prepared from coal fly ash.

ABSTRACT: Zeolite molecular sieves are potential adsorbents for wastewater treatment, characterized by high efficiency, simple process, easy regeneration, and low treatment cost. In this study, zeolite A molecular sieves were prepared using coal fly ash (CFA), which is an effective method for the utilization of CFA. The results showed that the CFA-based zeolite molecular sieves synthesized under optimized conditions exhibited excellent adsorption and removal rates (> 40%) for ammonia-nitrogen in wastewater of different concentrations and properties. The analysis of adsorption kinetics revealed that the adsorption process followed pseudo-second-order kinetics model, indicating that the adsorption of ammonia-nitrogen on zeolite is primarily controlled by chemisorption rather than physisorption. The ad

SUBMITTER: Jiang Q 

PROVIDER: S-EPMC11387470 | biostudies-literature | 2024 Sep

REPOSITORIES: biostudies-literature