Ammonia adsorption and recovery from swine wastewater permeate using naturally occurring clinoptilolite. (October 2021)

• Record Type: Journal Article
• Authors: Damodara Kannan, Arvind; Parameswaran, Prathap
• Is Part Of: Journal of water process engineering. Volume 43(2021)
• Publication Date: 2021-10
• Subjects: Swine wastewater -- Natural clinoptilolite -- Ammonia recovery -- Slow release fertilizer -- Anaerobic membrane bioreactor; Water-supply engineering -- Periodicals; Saline water conversion -- Periodicals; Seawater -- Distillation -- Periodicals; Sanitary engineering -- Periodicals; Sewage -- Purification -- Periodicals; 627
• DOI: 10.1016/j.jwpe.2021.102234
• Languages: English
• ISSNs: 2214-7144

Abstract

Abstract: This study aims to successfully demonstrate natural clinoptilolite based ammonia capture from real swine wastewater and simulated Anaerobic Membrane Bioreactor (AnMBR) treated swine permeate through extensive experimental analysis. The surface structure as well as elemental and chemical composition of both treated and untreated clinoptilolite particles were characterized using Scanning electron microscopy (SEM) - Energy dispersive X-ray spectroscopy (EDS) and Fourier transform infrared spectroscopy (FTIR). Column experiments revealed that the breakthrough times for the real swine and synthetic swine wastewaters were similar indicating that the wastewater matrix did not really have an effect on ammonia adsorption. Ion release profiles showed Na + to be the main counterion for NH4 + capture. The presence of K + ion had the greatest impact on ammonia adsorption and the selectivity series was determined to be K + > Ca 2+ > Na + > Mg 2+ . Simultaneous removal of P from real and synthetic swine wastewaters was observed and confirmed by scanning electron microscopy-energy dispersive spectroscopy (SEM-EDS) data as well as the ion-release profile data. Additionally, sustained regenerability of sorbed clinoptilolite was demonstrated using brine solution through alternating cycles of adsorption and desorption. Highlights: Ammonium capture from swine waste by natural clinoptilolite demonstrated Pore diffusion is the rate limiting step for NH4 + capture by clinoptilolite. Selectivity order of competing ions relative to NH4 + uptake: K + > Ca 2+ > Na + > Mg 2+ Identical column breakthrough curves between synthetic and real swine wastewater Sustained reuse of clinoptilolite over multiple cycles achieved