ﺣﺬف رﻧﮕﺰاي آﻧﯿﻮﻧﯽ ﮐﻨﮕﻮرد از ﭘﺴﺎب ﻫﺎي ﺻﻨﻌﺘﯽ ﺑﺎ اﺳﺘﻔﺎده از ﻧﺎﻧﻮﻣﻮاد

Removal of anionic Congo red dye from industrial effluent using nanomaterials

ﺳﺎﺑﻘﻪ و ﻫﺪف: رﻧﮓ ﻫﺎي ﭘﺎﯾﺪار آﻟﯽ از آﻻﯾﻨﺪه ﻫﺎﯾﯽ ﻫﺴﺘﻨﺪ ﮐﻪ ﺑﻪ رﻏﻢ ﻣﺎﻫﯿﺖ ﺳﻤﯽ و ﭘﺎﯾﺪاري ﺑﺴﯿﺎر زﯾﺎد در ﭘﺴﺎب ﻫﺎي ﺻﻨﻌﺘﯽ، ﺑﻪ ﻃﻮر ﮔﺴﺘﺮده در ﺻﻨﺎﯾﻊ ﻣﺨﺘﻠﻒ اﺳﺘﻔﺎده ﻣﯽ ﺷﻮﻧﺪ. از اﯾﻦ رو، ﺣﺬف اﯾﻦ ﮔﻮﻧﻪ ﺗﺮﮐﯿﺒﺎت ﺳﻤﯽ از ﭘﺴﺎب ﺻﻨﺎﯾﻊ ﻗﺒﻞ از ورود ﺑﻪ ﻣﻨﺎﺑﻊ آب ﭘﺬﯾﺮﻧﺪه اﻣﺮي ﻣﻬﻢ ﺑﻪ ﻧﻈﺮ ﻣﯽ رﺳﺪ. ﺑﯿﻦ روش ﻫﺎي ﻣﺨﺘﻠﻒ ﺑﺮاي ﺗﺼﻔﯿﻪ، ﺟﺬب ﺳﻄﺤﯽ روﺷﯽ ﻣﺆﺛﺮ ﺑﺮاي ﺗﺼﻔﯿﻪ آب و ﭘﺴﺎب اﺳﺖ. اﯾﻦ ﻓﺮآﯾﻨﺪ ﺑﻪ دﻟﯿﻞ ﺳﺎدﮔﯽ و ﺳﻬﻮﻟﺖ در ﻃﺮاﺣﯽ ﺑﺮاي رﻧﮕﺒﺮي ﭘﺴﺎب ﻫﺎي رﻧﮕﯽ ﺑﻪ ﻃﻮر ﮔﺴﺘﺮده اﺳﺘﻔﺎده ﻣﯽ ﺷﻮد. ﮐﺎرﺑﺮد ﻧﺎﻧﻮ ﻣﻮاد در ﺗﺼﻔﯿﻪ ﭘﺴﺎب ﻫﺎي رﻧﮕﯽ ﺗﻮﺟﻪ زﯾﺎدي را در ﺳﺎل ﻫﺎي اﺧﯿﺮ ﺑﻪ ﺧﻮد ﺟﻠﺐ ﮐﺮده اﺳﺖ. در اﯾﻦ ﻣﻄﺎﻟﻌﻪ ﻫﺪف ﺑﺮرﺳﯽ ﻗﺎﺑﻠﯿﺖ ﻧﺎﻧﻮ ﻣﻮاد در ﺟﺬب رﻧﮕﺰاي آﻧﯿﻮﻧﯽ ﮐﻨﮕﻮرد اﺳﺖ. ﻣﻮاد و روش ﻫﺎ: اﯾﻦ ﭘﮋوﻫﺶ از ﻧﻮع ﻣﺮوري ﺑﻮده ﮐﻪ ﺑﻪ روش ﮐﺘﺎﺑﺨﺎﻧﻪ اي و ﺑﺎ اﺳﺘﻔﺎده از ﻣﺪارك و ﺳﻮاﺑﻖ ﻣﻮﺟﻮد اﺳﺖ، ﮐﻪ ﭘﯿﺸﺮﻓﺖ ﻫﺎي اﺧﯿﺮ در اﺳﺘﻔﺎده از ﻧﺎﻧﻮ ﻣﻮاد ﺟﻬﺖ ﺣﺬف ﮐﻨﮕﻮرد از ﭘﺴﺎب ﻫﺎ را ﺑﯿﺎن ﻣﯽ ﮐﻨﺪ؛ ﻋﻼوه ﺑﺮ اﯾﻦ، ﻣﮑﺎﻧﯿﺴﻢ ﻫﺎي ﺟﺬب ﺧﺎص، ﭘﯿﺸﺮﻓﺖ ﻫﺎ ﺑﻪ ﺧﺼﻮص ﺑﺮاي اﻓﺰاﯾﺶ ﻇﺮﻓﯿﺖ ﺟﺬب، اﯾﺰوﺗﺮم ﻫﺎ و ﺳﻨﺘﯿﮏ ﻫﺎي ﺟﺬب ﺑﺮاي ﻫﺮ ﯾﮏ از ﻧﺎﻧﻮ ﻣﻮاد ﺑﺤﺚ ﺷﺪه اﺳﺖ. ﯾﺎﻓﺘﻪ ﻫﺎ: اﮔﺮﭼﻪ ﻧﺎﻧﻮ ﻣﻮاد و ﮐﺮﺑﻦ ﻓﻌﺎل ﻫﺮ دو ﺑﻪ ﺷﮑﻞ ﻗﺎﺑﻞ ﻣﻼﺣﻈﻪ اي ﻣﺴﺎﺣﺖ ﺳﻄﺢ ﺑﺎﻻ دارﻧﺪ، ﺑﺮﺧﯽ از ﻧﺎﻧﻮ ﻣﻮاد ﻫﺎ دو ﻣﺰﯾﺖ ﻋﻤﺪه ﺑﺮ ﮐﺮﺑﻦ ﻓﻌﺎل ﺑﻪ ﻋﻨﻮان ﺟﺎذب دارا ﻣﯽ ﺑﺎﺷﻨﺪ: آن ﻫﺎ ﻣﯽ ﺗﻮاﻧﻨﺪ ﺑﻪ آﺳﺎﻧﯽ ﺑﺎ ﯾﮏ ﻫﺰﯾﻨﻪ ﮐﻢ ﺗﺮ و ﻣﻘﺎدﯾﺮ ﮐﻮﭼﮏ ﺗﺮ ﻣﻮرد ﻧﯿﺎز ﺑﺮاي ﺣﺬف ﻣﺆﺛﺮ آﻻﯾﻨﺪه ﻫﺎ ﺳﻨﺘﺰ ﺷﻮﻧﺪ. ﻧﺘﯿﺠﻪ ﮔﯿﺮي: ﺑﺮرﺳﯽ ﻫﺎ ﻧﺸﺎن داد ﮐﻪ ﻧﺎﻧﻮ ﻣﻮاد ﻣﯽ ﺗﻮاﻧﻨﺪ ﺑﻪ ﺷﮑﻞ ﻣﺆﺛﺮ ﺑﺮاي ﺗﺼﻔﯿﻪ ﭘﺴﺎب ﻫﺎي ﺣﺎوي رﻧﮓ آزوي آﻧﯿﻮﻧﯽ ﮐﻨﮕﻮرد اﺳﺘﻔﺎده ﺷﻮﻧﺪ.

Background and Objectives: Organic stable colors are pollutants, despite their toxic nature and high stability in aqueous solution, are widely used in various industries. The elimination of these toxic compounds from industrial waste before its enters the receiving water resources is important. This process is widely used in the design of color removal stages in the wastewater treatment for its simplicity and high efficiency. Application of nanomaterials in dye wastewater treatment has received wide attention in recent years. In this study, highlights recent developments in the use of nanomaterials for the adsorption of Congo red from wastewater. In addition to, Specific adsorption mechanisms, improvements, particularly for increasing adsorption capacities, are discussed for each nanomaterial. The aim of this paper is that the ability of nanomaterials in removal of Congo red from aqueous solutions. Materials and methods: This is a reviewing research which is done by librarian method and using the existing documents. In this paper, highlights recent developments in the use of nanomaterials for the adsorption of Congo red from wastewater. In addition to, Specific adsorption mechanisms, improvements, particularly for increasing adsorption capacities, are discussed for each nanomaterial. Result: Although both nanomaterials and activated carbon have considerably high surface areas, some nanomaterials have two main advantages over activated carbon as adsorbents: they can be easily synthesized at a lower cost and smaller amounts are required for effective removal of pollutants. Conclusion: The results indicated that nanomaterials can be effectively used for treating wastewaters containing Congo red anionic azo dye.