Comparative study of different systems for adsorption and catalytic oxidation of hexamine in industrial wastewaters

2014 ◽  
Vol 20 (1) ◽  
pp. 37-45 ◽  
Author(s):  
N. Zamani ◽  
H.R. Rajabi ◽  
M. Taghdiri ◽  
A. Sohyl Fakhaei ◽  
V. Vatanpour
Keyword(s):  
Comparative Study ◽  
Catalytic Oxidation ◽  
Industrial Wastewaters

scholarly journals A Comparative Study on Cu2+, Zn2+, Ni2+, Fe3+, and Cr3+ Metal Ions Removal from Industrial Wastewaters by Chitosan-Based Composite Cryogels

Molecules ◽  
2020 ◽  
Vol 25 (11) ◽  
pp. 2664 ◽  
Author(s):  
Doina Humelnicu ◽  
Ecaterina Stela Dragan ◽  
Maria Ignat ◽  
Maria Valentina Dinu
Keyword(s):  
Comparative Study ◽  
Metal Ions ◽  
Renewable Resources ◽  
Electrostatic Interactions ◽  
Functional Materials ◽  
Sorption Data ◽  
Industrial Wastewaters ◽  
Dynamic Technique ◽  
Batch Technique ◽  
Metal Ions Removal

Materials coming from renewable resources have drawn recently an increased attention in various applications as an eco-friendly alternative in the synthesis of novel functional materials. Polysaccharides, with their prominent representative – chitosan (CS), are well-known for their sorption properties, being able to remove metal ions from dilute solutions either by electrostatic interactions or chelation. In this context, we proposed here a comparative study on Cu2+, Zn2+, Ni2+, Fe3+, and Cr3+ metal ions removal from industrial wastewaters by CS-based composite cryogels using batch technique. The composite cryogels consisting of CS embedding a natural zeolite, namely clinoptilolite, were synthesized by cryogelation, and their sorption performance were compared to those of CS cryogels and of acid-activated zeolite. A deeper analysis of thermodynamics and kinetics sorption data was performed to get insights into the sorption mechanism of all metal ions onto sorbents. Based on the optimized sorption conditions, the removal of the above-mentioned ions from aqueous solutions by the composite sorbent using dynamic technique was also evaluated.

Removal of Heavy Metals from Industrial Wastewaters Using Local Alum and Other Conventional Coagulants-A Comparative Study

2007 ◽  
Vol 7 (10) ◽  
pp. 1416-1421 ◽  
Author(s):  
A.O. Ogunfowokan . ◽  
L.M. Durosinmi . ◽  
J.A.O. Oyekunle . ◽  
O.A. Ogunkunle . ◽  
I.T. Igbafe .
Keyword(s):  
Heavy Metals ◽  
Comparative Study ◽  
Industrial Wastewaters ◽  
Removal Of Heavy Metals
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