Adsorption of ammonium by aerobic granules under high ammonium levels
Journal
Journal of the Taiwan Institute of Chemical Engineers
Journal Volume
45
Journal Issue
1
Pages
202-206
Date Issued
2014
Author(s)
Abstract
High-strength ammonium (NH4+) wastewaters are difficult to be treated biologically. Aerobic granules are regarded as a promising technology for NH4+ removal from wastewaters. Adsorption using aerobic granules in 50-4000mg NH4+-N/L wastewaters was studied at 30°C. Adsorption capacity was increased with 50-1000mg NH4+-N/L and reached plateau of 24.5mg NH4+-N/g-volatile suspended solids at >2000mg NH4+-N/L. Ion exchange mechanism controls adsorption at <300mg NH4+-N/L and physisorption mechanism dominates the process at >1000mg NH4+-N/L. The biomass of aerobic granules presents a recyclable adsorbent for NH4+ from high-strength wastewaters. ? 2013 Taiwan Institute of Chemical Engineers.
Subjects
Aerobic granules
Ammonium adsorption
High concentration
SDGs
Type
journal article