Ammonium adsorption, desorption and recovery by acid and alkaline treated zeolite

Autor: Beatriz Cano, Giorgio Mannina, Sofia Maria Muscarella, Luigi Badalucco, Vito Armando Laudicina
Přispěvatelé: Muscarella S.M., Badalucco L., Cano B., Laudicina V.A., Mannina G.
Rok vydání: 2021
Předmět:
inorganic chemicals
Environmental Engineering
Settore AGR/13 - Chimica Agraria
0207 environmental engineering
FOS: Physical sciences
Bioengineering
02 engineering and technology
Applied Physics (physics.app-ph)
010501 environmental sciences
Wastewater
01 natural sciences
Ammonium adsorption
Water Purification
Adsorption
Desorption
Physics - Chemical Physics
Ammonium Compounds
Alkaline and acid treatments
Ammonium exchange capacity
Ammonium kinetic adsorption
Clinoptilolite
Resource recovery
020701 environmental engineering
Zeolite
Waste Management and Disposal
0105 earth and related environmental sciences
Resource recovery
Chemical Physics (physics.chem-ph)
Clinoptilolite
Aqueous solution
Settore ICAR/03 - Ingegneria Sanitaria-Ambientale
Renewable Energy
Sustainability and the Environment
Chemistry
food and beverages
General Medicine
Physics - Applied Physics
6. Clean water
Zeolites
Water Pollutants
Chemical
Nuclear chemistry
Zdroj: Bioresource Technology
ISSN: 0960-8524
DOI: 10.1016/j.biortech.2021.125812
Popis: In this study, the suitability of zeolite as a possible medium for ammonium adsorption, desorption and recovery from wastewater was investigated. Specifically, batch adsorption and desorption studies with solutions enriched in NH$_4^+$ were conducted employing zeolite to evaluate how the chemical treatment and contact time affect adsorption and desorption. Several experimental tests were carried out considering both untreated and treated zeolite. Untreated and HCl-Na treated zeolite adsorbed up to 11.8 mg NH$_4^+$ g$^{-1}$ and showed the highest efficiency in recovering NH$_4^+$ from aqueous solution. Regardless of pre-treatment, treatments with NaCl resulted in higher and faster adsorption of NH$_4^+$ than treatments with CaCl$_2$ and MgCl$_2$.
15 pages, 2 figures
Databáze: OpenAIRE
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