Wastewater treatment by ion exchange

1972 ◽  
Vol 6 (6) ◽  
pp. 681-694 ◽  
Author(s):  
J Gregory ◽  
R.V Dhond
Keyword(s):  
Wastewater Treatment ◽  
Ion Exchange

scholarly journals Study of Chromium Removal by the Electrodialysis of Tannery and Metal-Finishing Effluents

2012 ◽  
Vol 2012 ◽  
pp. 1-7 ◽  
Author(s):  
Ruan C. A. Moura ◽  
Daniel A. Bertuol ◽  
Carlos A. Ferreira ◽  
Franco D. R. Amado
Keyword(s):  
Wastewater Treatment ◽  
Ion Exchange ◽  
Electric Field ◽  
Driving Force ◽  
Membrane Separation ◽  
Physicochemical Process ◽  
Separation Technique ◽  
Chromium Removal ◽  
Metal Finishing ◽  
Interesting Alternative

The metal-finishing and tannery industries have been under strong pressure to replace their current wastewater treatment based on a physicochemical process. The electrodialysis process is becoming an interesting alternative for wastewater treatment. Electrodialysis is a membrane separation technique, in which ions are transported from one solution to another through ion-exchange membranes, using an electric field as the driving force. Blends of polystyrene and polyaniline were obtained in order to produce membranes for electrodialysis. The produced membranes were applied in the recovery of baths from the metal-finishing and tannery industries. The parameter for electrodialysis evaluation was the percentage of chromium extraction. The results obtained using these membranes were compared to those obtained with the commercial membrane Nafion 450.

Hybrid algal photosynthesis and ion exchange (HAPIX) process for high ammonium strength wastewater treatment

2018 ◽  
Vol 142 ◽  
pp. 65-74 ◽  
Author(s):  
Meng Wang ◽  
Karl A. Payne ◽  
Shuang Tong ◽  
Sarina J. Ergas
Keyword(s):  
Wastewater Treatment ◽  
Ion Exchange ◽  
Algal Photosynthesis

scholarly journals In situ synthesis of hierarchical structured cotton fibers/MnO2 composites: a versatile and recyclable device for wastewater treatment

RSC Advances ◽  
2017 ◽  
Vol 7 (50) ◽  
pp. 31475-31484 ◽  
Author(s):  
Chenlu Jiao ◽  
Jin Tao ◽  
Sijun Xu ◽  
Desuo Zhang ◽  
Yuyue Chen ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Ion Exchange ◽  
Cotton Fiber ◽  
Redox Reaction ◽  
In Situ Synthesis ◽  
Cotton Fibers

Hierarchical structured cotton fiber–MnO2 composites were prepared by a new two-step strategy “ion exchange–redox reaction”.

scholarly journals HYGIENIC EFFICIENCY OF WASTEWATER TREATMENT USING POLYMERIC ION-EXCHANGE MATERIALS

2019 ◽  
pp. 40-44
Author(s):  
S.V. Skupnevskiy
Keyword(s):  
Heavy Metal ◽  
Wastewater Treatment ◽  
Ion Exchange ◽  
Industrial Wastewater ◽  
High Speed ◽  
Cation Exchanger ◽  
Metal Salts ◽  
Flotation Reagents ◽  
Exchange Processes ◽  
Heavy Metal Salts

Polymeric fibrous ion-exchange materials based on polyacrylonitrile matrix, produced in the form of cation-exchanger KN-1 and anion-exchanger AS-1 were the object of the study. We studied the sorption properties of these materials to heavy metal salts and products of their chemical transformation with flotation reagents. According to obtained results, exchange processes have high speed and materials are characterized by high value of absorption – up to 250 mg/g. The introduction of a cascade filtration scheme ensures the treatment of highly contaminated multicomponent industrial wastewater to levels that comply with the hygienic requirements. The advantages of the materials under study are the possibility of their repeated regeneration (by acid and alkali) without losing their original properties and the possibility of concentrating the desorbed metals for the purpose of their recycling again.

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