Separation and Recovery Process of Copper (II) and Nickel (II) from Wastewater Using Ion Exchange Fiber

Abstract

In this paper, the parameters affecting the adsorption of CuII and NiII by PAN‐NHx fiber and PAN‐COONa fiber were discussed firstly, such as initial ion concentration, pH, and temperature. Secondly, influence factors toward the separation of CuII and NiII by PAN‐NHx fiber were systematically evaluated by single‐column experiments. The results showed that the PAN‐NHx fiber had good separation of CuII and NiII; NiII accounts for more than 99.00 % of total metal ion content in the initial 1000 mL effluent, while CuII is less than 1 %. With the changed from CCuII: CNiII=90 %:10 % to 95 %:5 %, the ratio of CCuII: CNiII in the treated effluent changed from 6 %: 94 % to 2 %: 98 % (fed flow rate: 0.42 BV min−1). The adsorption capacity of PAN‐NHx adsorption column was well maintained after six cycles. Finally, based on the above laboratory results, a multi‐column process was designed to separate and recover CuII and NiII from wastewater.

Characterization and Optimization of Polymeric Bispicolamine Chelating Resin: Performance Evaluation via RSM Using Copper in Acid Liquors as a Model Substrate through Ion Exchange Method

“…Various types of chelating resins are well known and widely used in several applications for water and wastewater treatment plants, especially in industrial estates for removing metals selectively via commercially available ion exchange processes. In recent years, different functional groups of chelating resin were widely used for base metal purification and separation [ 1 ] through the ion exchange process, especially for rare earth elements such as Amberlite XAD-4 (styrene divinyl benzene copolymer) [ 2 ], Dowex-M4195 and Dow-4196 (bis-picolylamine) [ 3 ], Lewatit TP 207 and SIR-300 (iminodiacetate) [ 4 , 5 ], SIR-500 (amino phosphonic) and Dowex XUS43605 (hydroxypropylpicolylamine) [ 6 , 7 ]. These chelating resins were applied for extraction of various metals such as Pb(II)/lead, Cu(II)/copper, Cd(II)/cadmium, Zn(II)/zinc, La(III)/lanthanum, Ni(II)/nickel, Cr(III, IV)/chromium, Fe(II)/iron and Co(II)/cobalt ions [ 8 , 9 ] from aqueous solutions and especially in electronics waste applications at a low pH.…”