Dynamic Regeneration of D301f Anion Exchange Resin to Remove Nitrate Nitrogen in Wastewater

2011 ◽  
Vol 374-377 ◽  
pp. 1005-1008
Author(s):  
Hong Yan Li ◽  
Shang Ming Li
Keyword(s):  
Anion Exchange ◽  
Exchange Resin ◽  
Nitrate Nitrogen ◽  
Anion Exchange Resin ◽  
Solution Concentration ◽  
Exchange Capacity ◽  
Resin Column ◽  
Regeneration Efficiency ◽  
Regeneration Experiment ◽  
Theoretical Amount

Nitrate nitrogen in wastewater poses serious threat. D301f anion exchange resin can remove nitrate nitrogen in wastewater, its regeneration is one of the most important procedures, because regeneration efficiency has a direct impact on exchange capacity, water quality and regeneration agent consumption. D301f exchange resin column simulated nitrogen fertilizer plant wastewater (nitrate nitrogen300mg/L) for dynamic regeneration experiment. The results showed that, NH4OH regeneration agent dosage selected 3 to 4 times of theoretical amount more reasonable; regeneration solution concentration and temperature separately used 20% and 30°C better.

Separation of Manganese, Cobalt, Copper, Zinc, and Magnesium By Using an Anion Exchange Resin

1967 ◽  
Vol 50 (4) ◽  
pp. 783-786
Author(s):  
Eugene A Breatjlt
Keyword(s):  
Ion Exchange ◽  
Anion Exchange ◽  
Exchange Resin ◽  
Anion Exchange Resin ◽  
Ion Exchange Resin ◽  
Acid Solutions ◽  
Resin Column ◽  
Hydrochloric Acid Solutions ◽  
Copper Zinc ◽  
Resin Separation

Abstract The metals Mn, Mg, Co, Cu, and Zn were separated by using an anion exchange resin column and progressively less concentrated IIC1 solution as eluting agent. The position of Mg on an anion exchange resin, not previously reported in the literature, was determined. It has been shown that by using two different ion exchange resin columns, simple hydrochloric acid solutions as eluants, and polarographic or flame photometric determinations, 12 metals can be separately estimated in an aqueous solution containing about 100 /μg of each. It is recommended that the study of ion exchange resin separation of metals found in plants be continued.

scholarly journals Fast Recovery of Lead from Hydrochloric Acid via a Novel Silica-Supported Anion Exchange Resin for the Determination of 210Pb in Environmental Samples

2020 ◽  
Author(s):  
Lifeng Chen ◽  
Jie Zhang ◽  
Xianwen He ◽  
Manqing Liu ◽  
Qiuyang Wei ◽  
...  
Keyword(s):  
Anion Exchange ◽  
Environmental Samples ◽  
Adsorption Mechanism ◽  
Exchange Resin ◽  
Separation Efficiency ◽  
Anion Exchange Resin ◽  
Chemical Yield ◽  
Flow Speed ◽  
Exchange Capacity ◽  
Hcl Solution

The<b> </b>measurement of <sup>210</sup>Pb is significant in environmental studies. Lead separation in HCl solution is a vital procedure but suffers from poor efficiency with high labor and time costs. To overcome this problem, a novel anion exchange resin was synthesized and characterized by different techniques followed by studies on the adsorption behaviors towards lead in HCl solution. The results suggest that SiPS-N(CH<sub>3</sub>)<sub>3</sub>Cl was successfully prepared with small particle size, low water swelling rate, and large specific surface area. The maximum anion exchange capacity resulted from quaternary amine groups was determined to be 1.0 mmol (Cl<sup>-</sup>)/g.The adsorption activities reached equilibrium within 3 min under selected conditions offering extremely fast adsorption kinetics. The synergistic adsorption mechanism, the multilayer adsorption mechanism, and the competition from co-existing chloride anions were found to be responsible for the lead adsorption performance of SiPS-N(CH<sub>3</sub>)<sub>3</sub>Cl. Column experiments showed that the feeding volume of lead and HCl had impact on the chemical yield regardless of the co-existence of high concentrations of FeCl<sub>3</sub> (90 mM) and a high flow speed (4.0 mL/min). Based on these results, a separation process integrating SiPS-N(CH<sub>3</sub>)<sub>3</sub>Cl and the matched parameters was finally developed and tested. Our work greatly raised the lead separation efficiency in HCl solutions with implications for measuring <sup>210</sup>Pb in environmental samples.

scholarly journals Inhibition of Silicic Acid Elution during the Regeneration of Strong Base Anion Exchange Resin Column

2019 ◽  
Vol 92 (4) ◽  
pp. 869-874
Author(s):  
Takaaki Chuuman ◽  
Kinnosuke Eguchi ◽  
Marina Akinaga ◽  
Daisuke Kawamoto ◽  
Shigeki Horii ◽  
...  
Keyword(s):  
Anion Exchange ◽  
Silicic Acid ◽  
Exchange Resin ◽  
Anion Exchange Resin ◽  
Resin Column ◽  
Strong Base
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