Removal of arsenic in water by an ion-exchange fiber with amino groups

2008 ◽  
Vol 110 (6) ◽  
pp. 3934-3940 ◽  
Author(s):  
Xiaozhuan Zhang ◽  
Kai Jiang ◽  
Zhenbang Tian ◽  
Weiqing Huang ◽  
Liang Zhao
Keyword(s):  
Ion Exchange ◽  
Amino Groups ◽  
Ion Exchange Fiber ◽  
Removal Of Arsenic

Removal of Copper-Cyanide Complexes from Electroplating Industry Effluents by Ion-Exchange Fiber

2012 ◽  
Vol 476-478 ◽  
pp. 1847-1850 ◽  
Author(s):  
Zhan Qiang Cao ◽  
Ming Yu Li ◽  
Yao Ran Sun ◽  
Qing Xuan Zeng
Keyword(s):  
Ion Exchange ◽  
Room Temperature ◽  
Ph Value ◽  
Exchange Process ◽  
Packed Beds ◽  
Copper Cyanide ◽  
Ion Exchange Process ◽  
Cyanide Complexes ◽  
Ion Exchange Fiber ◽  
Industry Effluent

Removal of copper-cyanide complexes from electroplating industry effluent were studied by using an ion-exchange process. A kind of polypropylene strong alkaline anion exchange fiber was used to perform packed beds continuous experiments. The conditions of adsorption were wastewater pH value 9.0 and flow rate 90-120 BV•h-1 at room temperature. The packed beds were exhausted at 1300 bed volumes for copper-cyanide complexes The elution of copper-cyanide complexes from ion-exchange fiber was studied. The results showed that copper-cyanide complexes were easily eluted from ion exchange fiber using either 2.0 mol•L-1 NaNO3 or NaCl. With 1.0 mol•L-1 NaNO3 solution at 30 BV•h-1, the regenerating rate of copper-cyanide complexes was more than 95%.

Removal of arsenic(V) from aqueous wastes by ion exchange with Lewatit MP64 resin

2018 ◽  
Vol 133 ◽  
pp. 257-261 ◽  
Author(s):  
Francisco Jose Alguacil ◽  
Esther Escudero
Keyword(s):  
Ion Exchange ◽  
Removal Of Arsenic

Thermodynamics of Cr(VI) Adsorption on Thiourea Chelating Ion Exchange Fiber

2014 ◽  
Vol 894 ◽  
pp. 121-124 ◽  
Author(s):  
Yan Qiang Jian ◽  
Ming Yu Li ◽  
Qing Xuan Zeng
Keyword(s):  
Ion Exchange ◽  
Adsorption Process ◽  
Adsorption Equilibrium ◽  
Polypropylene Fiber ◽  
Equation Model ◽  
Batch Adsorption ◽  
Equilibrium Data ◽  
Endothermic Process ◽  
Adsorption Equilibrium Data ◽  
Ion Exchange Fiber

A chelating ion exchange fiber containing thioureido groups for the removal of Cr (VI) has been prepared from chloramethylated styrene grafted polypropylene fiber (2.96 mmol/g Cl) reacted with thiourea, batch adsorption experiments are adopted to investigate its adsorption equilibrium properties, Adsorption isotherms at various temperatures were obtained. Langmuir linear equation model can well describe the adsorption equilibrium data suggesting that the adsorption process involves both chemisorption and physisorption. The values of thermodynamic parameters, including ΔH, ΔGand ΔS, indicate that the adsorption of Cr (VI) is a spontaneous, entropy-driven and endothermic process.

A novel riboflavin gastro-mucoadhesive delivery system based on ion-exchange fiber

2008 ◽  
Vol 364 (1) ◽  
pp. 21-26 ◽  
Author(s):  
Huimin Yao ◽  
Lu Xu ◽  
Fei Han ◽  
Xin Che ◽  
Yang Dong ◽  
...  
Keyword(s):  
Ion Exchange ◽  
Delivery System ◽  
Ion Exchange Fiber
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