Study on synergistic effect of removal of nitrogen and phosphorus by mixed modified zeolite. Issue 1 (May 2020)

• Record Type: Journal Article
• Authors: Zhou, Bingling; Zhang, Chunyu; Li, Zaiguo; Li, Cuihua
• Is Part Of: IOP conference series. Volume 508:Issue 1(2020)
• Publication Date: 2020-05
• Subjects: Earth sciences -- Periodicals; Environmental sciences -- Congresses; Environmental sciences -- Periodicals; 550.5
• DOI: 10.1088/1755-1315/508/1/012156
• Languages: English
• ISSNs: 1755-1307

Abstract

Abstract: Sodium chloride-modified zeolite Z-Na for the removal of ammonia nitrogen and lanthanum-modified zeolite Z-La for the removal of phosphorus were prepared by sodium chloride modification and lanthanum chloride modification. Through adsorption kinetics and isotherm model fitting, the synergistic effect of pollutants in the removal of ammonia nitrogen and phosphorus by these two zeolites was explored. The results show that in the case of composite pollutants, the presence of phosphorus can inhibit the adsorption of ammonia nitrogen by Z-Na, (the adsorption rate is reduced from 2.3840ℎ −1 to 1.3442ℎ −1, and the maximum adsorption capacity is 13.6612mg / g reduced to 11.8906mg / g);the presence of ammonia nitrogen will promote the adsorption of phosphorus by Z-La (adsorption rate increased from 1.0623ℎ −1 to 4.8595ℎ −1, while the maximum adsorption capacity is almost unchanged).