Separation of Inorganic Arsenic Species from Aqueous Solution by Anion Exchange Column and Its Application in Study of Arsenic Removal

2013 ◽  
Vol 40 (7) ◽  
pp. 1092-1097
Author(s):  
Hua-Ming GUO ◽  
Chun-Hua LIU
Keyword(s):  
Aqueous Solution ◽  
Anion Exchange ◽  
Arsenic Removal ◽  
Inorganic Arsenic ◽  
Arsenic Species ◽  
Anion Exchange Column ◽  
Exchange Column ◽  
Inorganic Arsenic Species

Simultaneous speciation analysis of As, Sb and Se redox couples by SF-ICP-MS coupled to HPLC

2014 ◽  
Vol 6 (14) ◽  
pp. 5112-5119 ◽  
Author(s):  
Debo Wu ◽  
Thomas Pichler
Keyword(s):  
Anion Exchange ◽  
Inorganic Arsenic ◽  
Speciation Analysis ◽  
New Method ◽  
Anion Exchange Column ◽  
Exchange Column ◽  
Redox Couples ◽  
Icp Ms

A new method for the simultaneous speciation analysis of inorganic arsenic (iii, v), antimony (iii, v) and selenium (iv, vi) using anion exchange column.

scholarly journals The sorption of inorganic arsenic on modified sepiolite: Effect of hydrated iron(III)-oxide

2014 ◽  
Vol 79 (7) ◽  
pp. 815-828 ◽  
Author(s):  
Nikola Ilic ◽  
Slavica Lazarevic ◽  
Vladana Rajakovic-Ognjanovic ◽  
Ljubinka Rajakovic ◽  
Djordje Janackovic ◽  
...  
Keyword(s):  
Sorption Capacity ◽  
Arsenic Removal ◽  
Ph Value ◽  
Inorganic Arsenic ◽  
Arsenic Species ◽  
Deionized Water ◽  
Order Kinetic ◽  
Initial Ph ◽  
Order Kinetic Model ◽  
Pseudo Second Order

The sorption of inorganic arsenic species, As(III) and As(V), from water by sepiolite modified with hydrated iron(III) oxide was investigated at 25 ?C through batch studies. The influence of the initial pH value, the initial As concentrations, the contact time and types of water on the sorption capacity was investigated. Two types of water were used, deionized and groundwater. The maximal sorption capacity for As(III) from deionized water was observed at initial and final pH value 7.0, while the bonding of As(V) was observed to be almost pH independent for pH value in the range from 2.0 to 7.0, and the significant decrease in the sorption capacity was observed at pH values above 7.0. The sorption capacity at initial pH 7.0 was about 10 mg g?1 for As(III) and 4.2 mg g?1 for As(V) in deionized water. The capacity in groundwater was decreased by 40 % for As(III) and by 20 % for As(V). The Langmuir model and pseudo-second order kinetic model revealed good agreement with the experimental results. The results show that Fe(III)-modified sepiolite exhibits significant affinity for arsenic removal and it has a potential for the application in water purification processes.

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