Ammonia nitrogen removal from aqueous solution using functionalized zeolite columns

作者：Wang Hongbin; Gui Hua; Yang Wenrong^*; Li Da; Tan Wei; Yang Min; Barrow Colin J

来源：Desalination and Water Treatment, 2014, 52(4-6): 753-758.

DOI：10.1080/19443994.2013.827316

• Functionalized zeolites
• Ammonia
• nitrogen
• Dynamic adsorption
• Thomas model
• Recycling

In this study, a functionalized zeolites column was developed to remove ammonia nitrogen with a low concentration (50mg/L) from aqueous solution. The absorption properties and regeneration capacity were investigated. Through breakthrough and elution curve for dynamic adsorption, we found the wastewater with 50mg/L ammonia nitrogen took 7h to flow 10g modified zeolites column with diameters of 24 to 64 meshes at a flow rate of 2mL/min. The saturated extent of adsorption was up to 7.95mg/g, and the saturated adsorption time was 22h. The process of dynamic adsorption could be fitted by the Thomas Model. The regeneration ability was optimized by 0.1M Na2CO3 as a regenerant. With excellent absorption ability for removing ammonia nitrogen with a low concentration, the functionalized zeolites could be potentially used a high-performance adsorbent for removing ammonia nitrogen.

• 出版日期2014-1-28
• 单位迪肯大学