Removal of Nitrate from Wastewater with Polymer-Enhanced Ultrafiltration (PEUF)

Abstract Polymer-enhanced ultrafiltration (PEUF) is an advanced technology for the efficient separation of heavy metal ions and organic matter from outlet water. The removal of nitrate ions from wastewater via PEUF was investigated using polyethyleneimine(PEI) and cationic polyacrylamide(CPAM). When...

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Published inIOP conference series. Earth and environmental science Vol. 781; no. 5; pp. 52030 - 52035
Main Authors Li, Xue, He, Li, Liao, Xingsheng, Song, Yuhao, Huang, Chaoguang, Luo, Kun, Pang, Ya
Format Journal Article
LanguageEnglish
Published Bristol IOP Publishing 01.05.2021
Subjects
Dosage
Heavy metals
Metal ions
Nitrate removal
Nitrates
Organic matter
pH effects
Polyacrylamide
Polyethyleneimine
Polymers
Reagents
Rejection
Ultrafiltration
Wastewater
Water treatment
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Summary:Abstract Polymer-enhanced ultrafiltration (PEUF) is an advanced technology for the efficient separation of heavy metal ions and organic matter from outlet water. The removal of nitrate ions from wastewater via PEUF was investigated using polyethyleneimine(PEI) and cationic polyacrylamide(CPAM). When the concentration of NO 3 - was 20 mg/L, the dosage of PEI/CPAM was 0.1 wt%, the best rejection were obtained, rejection of NO 3 - were 92.8% and 80.2%, respectively, and rejection of PEI and CPAM were 92.3% and 83.3%, respectively. Effect of pH value on NO 3 - rejection was obvious, rejection of NO 3 - decreased sharply with the increase of pH value. However, there was no obvious changes on the PEI rejection. The PEUF process was considered to be more suitable for nitrate rejection using PEI as a polymer reagent.
ISSN:1755-1307
1755-1315
DOI:10.1088/1755-1315/781/5/052030