ﺗﻬﯿﻪ ﻧﺎﻧﻮ ﺳﺎﺧﺘﺎر ﮐﻠﯿﻨﻮﭘﺘﯿﻠﻮﻟﯿﺖ از ﺳﻨﮓ ﻣﻌﺪن اﯾﻦ زﺋﻮﻟﯿﺖ و اﺳﺘﻔﺎده از آن ﺑﺮاي ﺣﺬف آﻻﯾﻨﺪه ﻣﺲ از آب

Preparation of Clinoptilolite Nanostructure from this Zeolite ore and its Application in Copper Ions Removal from Water

در اﯾﻦ ﮐﺎر ﭘﮋوﻫﺸﯽ ﻧﺎﻧﻮﺳﺎﺧﺘﺎرﻫﺎي ﮐﻠﯿﻨﻮﭘﺘﯿﻠﻮﻟﯿﺖ از ﺳﻨﮓ ﻣﻌﺪن اﯾﻦ زﺋﻮﻟﯿﺖ ﻃﺒﯿﻌﯽ ﺗﻬﯿﻪ و ﺟﻬﺖ ﺣﺬف ﯾﻮن ﻣﺲ (II) از ﻣﺤﻠﻮل آﺑﯽ آﻟﻮده ﺑﻪ آن اﺳﺘﻔﺎده ﺷﺪ. در ﻣﺮﺣﻠﻪ اول ذرات ﮐﻠﯿﻨﻮﭘﺘﯿﻠﻮﻟﯿﺖ ﻃﺒﯿﻌﯽ ﺗﻮﺳﻂ دﺳﺘﮕﺎه آﺳﯿﺎب ﮔﻠﻮﻟﻪاي ﺑﻪ ﻧﺎﻧﻮﺳﺎﺧﺘﺎرﻫﺎي ﻣﺮﺑﻮﻃﻪ ﺗﺒﺪﯾﻞ ﺷﺪﻧﺪ. ﻣﺸﺨﺼﺎت اﯾﻦ زﺋﻮﻟﯿﺖ ﻃﺒﯿﻌﯽ و ﻧﻤﻮﻧﻪﻫﺎي ﻧﺎﻧﻮﺳﺎﺧﺘﺎر ﺑﺪﺳﺖ آﻣﺪه از آن ﺑﺎ اﺳﺘﻔﺎده ازSEM، آﻧﺎﻟﯿﺰ ﺟﺬب-واﺟﺬﺑﯽ ﻧﯿﺘﺮوژن و XRD ﺑﺮرﺳﯽ ﺷﺪﻧﺪ. ﺗﺼﻮﯾﺮ SEM ﺗﻮﻟﯿﺪ ﻧﺎﻧﻮ ﺳﺎﺧﺘﺎرﻫﺎي ﮐﻠﯿﻨﻮﭘﺘﯿﻠﻮﻟﯿﺖ را ﺗﺎﯾﯿﺪ ﮐﺮد. دادهﻫﺎي ﺑﻪدﺳﺖآﻣﺪه از آﻧﺎﻟﯿﺰ ﺟﺬب-واﺟﺬﺑﯽ ﻧﯿﺘﺮوژن ﺣﺎﮐﯽ از اﻓﺰاﯾﺶ ﺗﺨﻠﺨﻞ ﻧﺎﻧﻮﺳﺎﺧﺘﺎرﻫﺎي ﮐﻠﯿﻨﻮﭘﺘﯿﻠﻮﻟﯿﺖ ﻧﺴﺒﺖ ﺑﻪ ﻣﯿﮑﺮوذرات ﺳﻨﮓ ﻣﻌﺪن ﻣﺮﺑﻮﻃﻪ ﺑﻮد. درﻗﺴﻤﺖ دوم اﯾﻦ ﭘﺮوژه از ﻧﺎﻧﻮﺳﺎﺧﺘﺎرﻫﺎي ﺗﻬﯿﻪ ﺷﺪه ﺑﻪﻋﻨﻮان ﺟﺎذب در ﻓﺮآﯾﻨﺪ ﺣﺬف ﯾﻮن ﻣﺲ (II) از آب آﻟﻮده ﺷﺪه اﺳﺘﻔﺎده ﮔﺮدﯾﺪ. ﺗﺄﺛﯿﺮ ﻋﻮاﻣﻞ ﻣﺤﯿﻄﯽ ﻣﺎﻧﻨﺪ pH اوﻟﯿﻪ ﻣﺤﻠﻮل، ﻣﻘﺪار ﺟﺎذب، ﻏﻠﻈﺖ آﻻﯾﻨﺪه و زﻣﺎن ﺗﻤﺎس ﺑﺮ راﻧﺪﻣﺎن ﺣﺬف ﻣﺲ (II) از ﻣﺤﻠﻮل ﺑﺮرﺳﯽ ﮔﺮدﯾﺪ. ﻫﻤﭽﻨﯿﻦ ﻣﺪل اﯾﺰوﺗﺮﻣﯽ و ﻣﺪل ﺳﯿﻨﺘﯿﮑﯽ ﻓﺮآﯾﻨﺪ ﺣﺬف ﻣﺲ ﻣﻮرد ﺑﺮرﺳﯽ ﻗﺮار ﮔﺮﻓﺖ ﮐﻪ ﻣﺪل ﻻﻧﮕﻤﻮﯾﺮ ﺗﻄﺎﺑﻖ ﺑﯿﺸﺘﺮي ﺑﺎ ﻓﺮآﯾﻨﺪ ﺟﺬب ﺳﻄﺤﯽ ﻣﻮرد ﻧﻈﺮ داﺷﺖ و ﻓﺮآﯾﻨﺪ از ﻣﺪل ﺳﯿﻨﺘﯿﮑﯽ ﺷﺒﻪ درﺟﻪ دوم ﭘﯿﺮوي ﮐﺮد.

In this work, natural clinoptilolite nanostructures were prepared from natural zeolite and used to remove Cu2+ cation from polluted water samples. In the first section the natural clinoptilolite particles with dimensions larger than nano were converted to nanostructures using a ball mill. Both the natural clinoptilolite and prepared nanostructure samples were first characterized by SEM and XRD and then submitted to nitrogen adsorption/desorption tests. The SEM images approved the development of clinoptilolite nanostructures. The result obtained from nitrogen adsorption/desorption analysis indicated that the pore volume of clinoptilolite nanostructures, in comparison to the clinoptilolite microparticles has been increased. In the second part of this work, the nanostructures were used as adsorbent for removal of Cu2+ cation from polluted water samples. Effect of some important parameters such as; initial pH of solution, adsorbent dosage and contact time on the, Cu2+ removal, efficiency were investigated, where the 6, 1.2 g/L and 6 were determined under the optimum conditions, respectively. Isotherm and kinetics of the adsorption process were also analyzed. In this manner the equilibrium data were fitted well to the Langmuir isotherm model and pseudo-second-order kinetic model.