scholarly journals The design of the experiments of arsenic removal from aqueous solutions onto Fe-XAD8-DEHPA

2012 ◽  
Author(s):  
A. Negrea ◽  
P. Negrea ◽  
M. Ciopec ◽  
I. Grozav ◽  
L. Lupa ◽  
...  
Keyword(s):  
Aqueous Solutions ◽  
Arsenic Removal

scholarly journals Synthesis characterization and sorption properties of a sorbent synthesized using slag and red mud: Arsenic removal from spiked aqueous solutions

2016 ◽  
Vol 18 (2) ◽  
pp. 339-347 ◽  
Keyword(s):  
Aqueous Solutions ◽  
Red Mud ◽  
Arsenic Removal ◽  
Point Of Zero Charge ◽  
Maximum Adsorption Capacity ◽  
X Ray Diffraction ◽  
Equilibrium Studies ◽  
Metallurgical Wastes ◽  
Bet Method ◽  
Gf Aas

<p>The aim of the present study was to synthesize a sorbent, for arsenic removal from aqueous solutions, reusing two waste materials (slag and red mud). The sorbent was prepared after chemical and thermal treatment, during which amorphous silica sol and FeOOH sol were produced simultaneously and form Fe-Si complexes on the surface of the slag. To characterize the sorbent Powder X-ray diffraction (XRD); Fourier transform infrared (FTIR) spectroscopy and Scanning Electron Microscopy (SEM-EDX) were applied. The surface area (BET method) and the Point of Zero Charge (PZC) of the sorbent were determined.). The sorption efficiency of the sorbent produced was investigated with kinetic and equilibrium studies, performed in batch conditions. The concentration of arsenic in solutions was determined by electro thermal atomic absorption spectroscopy (GF-AAS). The results of the study showed that with the described process, using metallurgical wastes, iron oxyhydroxides were &ldquo;loaded&rdquo; onto slag producing an effective sorbent for arsenic removal. Kinetic experiments proved that equilibrium was achieved within 15 hours, while the maximum adsorption capacity as evidenced by equilibrium experiments, was 16.14 mg g<sup>-1</sup>. Data proved to fit better to the Langmuir equation.</p>

Compared arsenic removal from aqueous solutions by synthetic mixed oxides and modified natural zeolites

Adsorption ◽  
2019 ◽  
Vol 25 (7) ◽  
pp. 1425-1436 ◽  
Author(s):  
Angélica Heredia ◽  
Jenny Gómez Avila ◽  
Ariel Vinuesa ◽  
Clara Saux ◽  
Sandra M. Mendoza ◽  
...  
Keyword(s):  
Aqueous Solutions ◽  
Arsenic Removal ◽  
Mixed Oxides ◽  
Natural Zeolites

Feasibility studies on arsenic removal from aqueous solutions by electrodialysis

2014 ◽  
Vol 49 (5) ◽  
pp. 545-554 ◽  
Author(s):  
Rose Marie O. Mendoza ◽  
Chi-Chuan Kan ◽  
Shih-Shing Chuang ◽  
Sheila Mae B. Pingul-Ong ◽  
Maria Lourdes P. Dalida ◽  
...  
Keyword(s):  
Aqueous Solutions ◽  
Arsenic Removal ◽  
Feasibility Studies

Arsenic removal from aqueous solutions and groundwater using agricultural biowastes-derived biosorbents and biochar: a column-scale investigation

2019 ◽  
Vol 21 (6) ◽  
pp. 509-518 ◽  
Author(s):  
Riaz Ahmad Tabassum ◽  
Muhammad Shahid ◽  
Nabeel Khan Niazi ◽  
Camille Dumat ◽  
Yongqing Zhang ◽  
...  
Keyword(s):  
Aqueous Solutions ◽  
Arsenic Removal

Arsenic Removal from Aqueous Solutions by Forward Osmosis

2020 ◽  
Vol 53 (3) ◽  
pp. 95-99 ◽  
Author(s):  
Minh Tuan Pham ◽  
Syouhei Nishihama ◽  
Kazuharu Yoshizuka
Keyword(s):  
Aqueous Solutions ◽  
Arsenic Removal ◽  
Forward Osmosis
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