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New Approach: Waste Materials as Sorbents for Arsenic Removal from Water

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Authors
Jovanović, Branislava M.
Rajaković, Ljubinka V.
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Abstract
The sorption of inorganic arsenic species (arsenite and arsenate) from aqueous solutions onto steel-mill waste and waste filter sand, under neutral conditions, was investigated in this study. Additionally, the steel-mill waste material was modified in order to minimize its deteriorating impact on the initial water quality and to meet the drinking water standards. The influence of contact time and initial arsenic concentration was investigated using batch system techniques. To evaluate the application for real groundwater treatment, the capacities of the obtained waste materials were further compared to those exhibited by commercial sorbents, which were examined under the same experimental conditions. Kinetic studies revealed that waste slag materials are the most efficient in arsenic removal, reaching equilibrium arsenic sorption capacities in the range 47.6-55.2 mu g/g, while waste filter sand exhibited capacities of 25.4-29.8 mu g/g (for an initial arsenic concentration C-o=0.5 mg/L).... The higher iron content in the slag materials was considered to be responsible for the better removal efficiencies, and the specific arsenic removal efficiency was estimated to be 220 mu gAs/gFe. The specific arsenic removal efficiency of the second active substance found in waste filter sand, manganese, was estimated to be 115 mu gAs/gMn. Equilibrium studies revealed the occurrence of both chemisorption and physical sorption processes. All the waste materials exhibited higher performances for As (V). The highest maximum sorption capacity was obtained by waste iron slag: 4040 mu g/g for As (V). The waste materials reached the arsenic removal capacities of the examined commercial materials, suggesting the feasibility of their application in real groundwater treatment.

Keywords:
Sorption / Arsenic removal / Waste materials / Sorption kinetics / Sorption isotherms
Source:
Journal of Environmental Engineering, 2010, 136, 11, 1277-1286
Funding / projects:
  • Serbian Ministry of Science and Technological Development
  • Belgrade Waterworks Company (JKP BVK)

DOI: 10.1061/(ASCE)EE.1943-7870.0000266

ISSN: 0733-9372

WoS: 000283190300011

Scopus: 2-s2.0-77954217979
[ Google Scholar ]
15
14
URI
http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5606
Collections
  • Radovi istraživača / Researchers’ publications (TMF)
Institution/Community
Tehnološko-metalurški fakultet
TY  - JOUR
AU  - Jovanović, Branislava M.
AU  - Rajaković, Ljubinka V.
PY  - 2010
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5606
AB  - The sorption of inorganic arsenic species (arsenite and arsenate) from aqueous solutions onto steel-mill waste and waste filter sand, under neutral conditions, was investigated in this study. Additionally, the steel-mill waste material was modified in order to minimize its deteriorating impact on the initial water quality and to meet the drinking water standards. The influence of contact time and initial arsenic concentration was investigated using batch system techniques. To evaluate the application for real groundwater treatment, the capacities of the obtained waste materials were further compared to those exhibited by commercial sorbents, which were examined under the same experimental conditions. Kinetic studies revealed that waste slag materials are the most efficient in arsenic removal, reaching equilibrium arsenic sorption capacities in the range 47.6-55.2 mu g/g, while waste filter sand exhibited capacities of 25.4-29.8 mu g/g (for an initial arsenic concentration C-o=0.5 mg/L). The higher iron content in the slag materials was considered to be responsible for the better removal efficiencies, and the specific arsenic removal efficiency was estimated to be 220 mu gAs/gFe. The specific arsenic removal efficiency of the second active substance found in waste filter sand, manganese, was estimated to be 115 mu gAs/gMn. Equilibrium studies revealed the occurrence of both chemisorption and physical sorption processes. All the waste materials exhibited higher performances for As (V). The highest maximum sorption capacity was obtained by waste iron slag: 4040 mu g/g for As (V). The waste materials reached the arsenic removal capacities of the examined commercial materials, suggesting the feasibility of their application in real groundwater treatment.
T2  - Journal of Environmental Engineering
T1  - New Approach: Waste Materials as Sorbents for Arsenic Removal from Water
EP  - 1286
IS  - 11
SP  - 1277
VL  - 136
DO  - 10.1061/(ASCE)EE.1943-7870.0000266
ER  - 
@article{
author = "Jovanović, Branislava M. and Rajaković, Ljubinka V.",
year = "2010",
abstract = "The sorption of inorganic arsenic species (arsenite and arsenate) from aqueous solutions onto steel-mill waste and waste filter sand, under neutral conditions, was investigated in this study. Additionally, the steel-mill waste material was modified in order to minimize its deteriorating impact on the initial water quality and to meet the drinking water standards. The influence of contact time and initial arsenic concentration was investigated using batch system techniques. To evaluate the application for real groundwater treatment, the capacities of the obtained waste materials were further compared to those exhibited by commercial sorbents, which were examined under the same experimental conditions. Kinetic studies revealed that waste slag materials are the most efficient in arsenic removal, reaching equilibrium arsenic sorption capacities in the range 47.6-55.2 mu g/g, while waste filter sand exhibited capacities of 25.4-29.8 mu g/g (for an initial arsenic concentration C-o=0.5 mg/L). The higher iron content in the slag materials was considered to be responsible for the better removal efficiencies, and the specific arsenic removal efficiency was estimated to be 220 mu gAs/gFe. The specific arsenic removal efficiency of the second active substance found in waste filter sand, manganese, was estimated to be 115 mu gAs/gMn. Equilibrium studies revealed the occurrence of both chemisorption and physical sorption processes. All the waste materials exhibited higher performances for As (V). The highest maximum sorption capacity was obtained by waste iron slag: 4040 mu g/g for As (V). The waste materials reached the arsenic removal capacities of the examined commercial materials, suggesting the feasibility of their application in real groundwater treatment.",
journal = "Journal of Environmental Engineering",
title = "New Approach: Waste Materials as Sorbents for Arsenic Removal from Water",
pages = "1286-1277",
number = "11",
volume = "136",
doi = "10.1061/(ASCE)EE.1943-7870.0000266"
}
Jovanović, B. M.,& Rajaković, L. V.. (2010). New Approach: Waste Materials as Sorbents for Arsenic Removal from Water. in Journal of Environmental Engineering, 136(11), 1277-1286.
https://doi.org/10.1061/(ASCE)EE.1943-7870.0000266
Jovanović BM, Rajaković LV. New Approach: Waste Materials as Sorbents for Arsenic Removal from Water. in Journal of Environmental Engineering. 2010;136(11):1277-1286.
doi:10.1061/(ASCE)EE.1943-7870.0000266 .
Jovanović, Branislava M., Rajaković, Ljubinka V., "New Approach: Waste Materials as Sorbents for Arsenic Removal from Water" in Journal of Environmental Engineering, 136, no. 11 (2010):1277-1286,
https://doi.org/10.1061/(ASCE)EE.1943-7870.0000266 . .

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