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

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

Optimization of the removal of arsenic from groundwater using ion exchange

2005 ◽  
pp. 237-245 ◽  
Author(s):  
C Mulligan ◽  
J Hadjinicolaou ◽  
A Saiduzzaman
Keyword(s):  
Ion Exchange ◽  
Removal Of Arsenic

scholarly journals Synthesis and performance of graphene and activated carbon composite for absorption of three-valance arsenic from wastewater

2019 ◽  
Vol 2 (01) ◽  
pp. 63-72
Author(s):  
Ahmad Ghozatloo ◽  
Amir Zarei ◽  
Mojtaba Arjomandi
Keyword(s):  
Ion Exchange ◽  
Membrane Separation ◽  
Graphene Nanosheets ◽  
Carbon Composite ◽  
Process Time ◽  
Surface Load ◽  
Treatment Processes ◽  
Rate Of Absorption ◽  
And Performance ◽  
Removal Of Arsenic

    High levels of arsenic in the effluent are a major concern of human, and the removal of it from the wastewater is hard and costly. The most common techniques for removal of arsenic are membrane separation, ion exchange, oxidation, and coagulation. The active carbon is used as the most common arsenic adsorbent in wastewater treatment processes, this study has been considered as the main adsorbent and attempted to improve its surface properties by graphene nanosheets. Thus, by adding graphene (4.5%w) to the carbon structure, its porosity increases, and the ion exchange behavior and surface load are corrected. In this research, the effects of time process, concentration of arsenic, and adsorbent are evaluated in different pH values. It has been observed that the maximum adsorption of arsenic is 91.8%; in addition, when graphene is used, the rate of absorption of Arsenic has increased about 5.2%, and the process time is shortened.

Embedding Procedure for Water Swollen Samples

1970 ◽  
Vol 28 ◽  
pp. 504-505
Author(s):  
Ann M. Thomas ◽  
Virginia Shemeley
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Ion Exchange ◽  
Structural Changes ◽  
Cross Linking ◽  
Ion Exchange Resins ◽  
Transmission Electron ◽  
First Pass ◽  
Exchange Resins

Those samples which swell rapidly when exposed to water are, at best, difficult to section for transmission electron microscopy. Some materials literally burst out of the embedding block with the first pass by the knife, and even the most rapid cutting cycle produces sections of limited value. Many ion exchange resins swell in water; some undergo irreversible structural changes when dried. We developed our embedding procedure to handle this type of sample, but it should be applicable to many materials that present similar sectioning difficulties.The purpose of our embedding procedure is to build up a cross-linking network throughout the sample, while it is in a water swollen state. Our procedure was suggested to us by the work of Rosenberg, where he mentioned the formation of a tridimensional structure by the polymerization of the GMA biproduct, triglycol dimethacrylate.

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