Improvement of environment quality by the arsenic phytoremediation from ashes
Abstract
The objective of this paper is to investigate possibility of environment quality improvement of
landfill ashes by a new technology of phytoremediation. The research included an analysis of
the adsorption of arsenic, as one of the most toxic elements, by sunflower (Helianthus annus),
flax (Linum utilitissimum) and red fescue grass (Festuca rubra L. ssp. genula Hack.). Three
plant species were grown on experimental ash plots for 82 days, during 2013. The main
results demonstrate the ability of sunflower to adsorb arsenic from ash, and concentration in
the root is 15.7 ±2.25 mg/kg and in aboveground shoot of sunflower is 8.25±2.5 mg/kg.
Arsenic concentration in flax root is 11.3 ±4 mg/kg and in aboveground shoot of flax is
8.75±2.24 mg/kg. The highest capacity for arsenic adsorption is demonstrated by red fescue
grass. At given concentrations of arsenic in ash, it demonstrates at average 39.51±27.6 mg/kg
in the root and 12.19±3.43 mg/kg in the aboveground shoot. Maximu...m observed arsenic
concentration in red fescue root is 93.9 mg/kg which is almost double the concentration found
in ash. Having compared the arsenic concentrations in plants (root and aboveground shoot) at
given ash conditions to other phytoremediators, it is concluded that the said species belong to
the group of moderate and facultative phytoremediators. The phytoremediation potential of
plants is estimated based on Biological Absorption Coefficient (BAC). Based on BAC values,
it will take three harvests of sunflower and flax over the same time of growing to reduce the
arsenic concentrations in ash to a harmless level, or a level below the maximum allowable
concentration in soil. Red fescue grass is a perennial, herbaceous, rhizomatous plant which
accumulates arsenic in the root and rhizome, but in a short time translocates arsenic to the
shoot and leaves. Its value for BAC=0.282, meaning that one harvest removes about 30% of
initial arsenic concentration. Conclusion is that red fescue grass may be used for two forms of
phytoremediation: phytostabilization and phytoextraction. Further research is required, with
variable arsenic concentrations, presence of phosphates or possibly adding of chelating agents in order to upgrade the efficiency of phytoremediation in solving the problem on the ash,
which often remains as a byproduct of thermal power plants.
Keywords:
Improvement / Phytoremediation / Ashes / Environmental quality / KostolacSource:
9th Conference on Sustainable Development of Energy, Water and Environment Systems, (SDEWES) Venice-Istanbul, 2014Publisher:
- Faculty of Mechanical Engineering and Naval Architecture, Zagreb
Collections
Institution/Community
Inovacioni centarTY - CONF AU - Miloradović, Milica AU - Stevović, Ivan AU - Stevović, Svetlana PY - 2014 UR - https://machinery.mas.bg.ac.rs/handle/123456789/7040 AB - The objective of this paper is to investigate possibility of environment quality improvement of landfill ashes by a new technology of phytoremediation. The research included an analysis of the adsorption of arsenic, as one of the most toxic elements, by sunflower (Helianthus annus), flax (Linum utilitissimum) and red fescue grass (Festuca rubra L. ssp. genula Hack.). Three plant species were grown on experimental ash plots for 82 days, during 2013. The main results demonstrate the ability of sunflower to adsorb arsenic from ash, and concentration in the root is 15.7 ±2.25 mg/kg and in aboveground shoot of sunflower is 8.25±2.5 mg/kg. Arsenic concentration in flax root is 11.3 ±4 mg/kg and in aboveground shoot of flax is 8.75±2.24 mg/kg. The highest capacity for arsenic adsorption is demonstrated by red fescue grass. At given concentrations of arsenic in ash, it demonstrates at average 39.51±27.6 mg/kg in the root and 12.19±3.43 mg/kg in the aboveground shoot. Maximum observed arsenic concentration in red fescue root is 93.9 mg/kg which is almost double the concentration found in ash. Having compared the arsenic concentrations in plants (root and aboveground shoot) at given ash conditions to other phytoremediators, it is concluded that the said species belong to the group of moderate and facultative phytoremediators. The phytoremediation potential of plants is estimated based on Biological Absorption Coefficient (BAC). Based on BAC values, it will take three harvests of sunflower and flax over the same time of growing to reduce the arsenic concentrations in ash to a harmless level, or a level below the maximum allowable concentration in soil. Red fescue grass is a perennial, herbaceous, rhizomatous plant which accumulates arsenic in the root and rhizome, but in a short time translocates arsenic to the shoot and leaves. Its value for BAC=0.282, meaning that one harvest removes about 30% of initial arsenic concentration. Conclusion is that red fescue grass may be used for two forms of phytoremediation: phytostabilization and phytoextraction. Further research is required, with variable arsenic concentrations, presence of phosphates or possibly adding of chelating agents in order to upgrade the efficiency of phytoremediation in solving the problem on the ash, which often remains as a byproduct of thermal power plants. PB - Faculty of Mechanical Engineering and Naval Architecture, Zagreb C3 - 9th Conference on Sustainable Development of Energy, Water and Environment Systems, (SDEWES) Venice-Istanbul T1 - Improvement of environment quality by the arsenic phytoremediation from ashes UR - https://hdl.handle.net/21.15107/rcub_machinery_7040 ER -
@conference{ author = "Miloradović, Milica and Stevović, Ivan and Stevović, Svetlana", year = "2014", abstract = "The objective of this paper is to investigate possibility of environment quality improvement of landfill ashes by a new technology of phytoremediation. The research included an analysis of the adsorption of arsenic, as one of the most toxic elements, by sunflower (Helianthus annus), flax (Linum utilitissimum) and red fescue grass (Festuca rubra L. ssp. genula Hack.). Three plant species were grown on experimental ash plots for 82 days, during 2013. The main results demonstrate the ability of sunflower to adsorb arsenic from ash, and concentration in the root is 15.7 ±2.25 mg/kg and in aboveground shoot of sunflower is 8.25±2.5 mg/kg. Arsenic concentration in flax root is 11.3 ±4 mg/kg and in aboveground shoot of flax is 8.75±2.24 mg/kg. The highest capacity for arsenic adsorption is demonstrated by red fescue grass. At given concentrations of arsenic in ash, it demonstrates at average 39.51±27.6 mg/kg in the root and 12.19±3.43 mg/kg in the aboveground shoot. Maximum observed arsenic concentration in red fescue root is 93.9 mg/kg which is almost double the concentration found in ash. Having compared the arsenic concentrations in plants (root and aboveground shoot) at given ash conditions to other phytoremediators, it is concluded that the said species belong to the group of moderate and facultative phytoremediators. The phytoremediation potential of plants is estimated based on Biological Absorption Coefficient (BAC). Based on BAC values, it will take three harvests of sunflower and flax over the same time of growing to reduce the arsenic concentrations in ash to a harmless level, or a level below the maximum allowable concentration in soil. Red fescue grass is a perennial, herbaceous, rhizomatous plant which accumulates arsenic in the root and rhizome, but in a short time translocates arsenic to the shoot and leaves. Its value for BAC=0.282, meaning that one harvest removes about 30% of initial arsenic concentration. Conclusion is that red fescue grass may be used for two forms of phytoremediation: phytostabilization and phytoextraction. Further research is required, with variable arsenic concentrations, presence of phosphates or possibly adding of chelating agents in order to upgrade the efficiency of phytoremediation in solving the problem on the ash, which often remains as a byproduct of thermal power plants.", publisher = "Faculty of Mechanical Engineering and Naval Architecture, Zagreb", journal = "9th Conference on Sustainable Development of Energy, Water and Environment Systems, (SDEWES) Venice-Istanbul", title = "Improvement of environment quality by the arsenic phytoremediation from ashes", url = "https://hdl.handle.net/21.15107/rcub_machinery_7040" }
Miloradović, M., Stevović, I.,& Stevović, S.. (2014). Improvement of environment quality by the arsenic phytoremediation from ashes. in 9th Conference on Sustainable Development of Energy, Water and Environment Systems, (SDEWES) Venice-Istanbul Faculty of Mechanical Engineering and Naval Architecture, Zagreb.. https://hdl.handle.net/21.15107/rcub_machinery_7040
Miloradović M, Stevović I, Stevović S. Improvement of environment quality by the arsenic phytoremediation from ashes. in 9th Conference on Sustainable Development of Energy, Water and Environment Systems, (SDEWES) Venice-Istanbul. 2014;. https://hdl.handle.net/21.15107/rcub_machinery_7040 .
Miloradović, Milica, Stevović, Ivan, Stevović, Svetlana, "Improvement of environment quality by the arsenic phytoremediation from ashes" in 9th Conference on Sustainable Development of Energy, Water and Environment Systems, (SDEWES) Venice-Istanbul (2014), https://hdl.handle.net/21.15107/rcub_machinery_7040 .