مطالعه و بررسي آزمايشگاهي عوامل مؤثر در پايداري غشاء مايع امولسيوني به منظور استفاده در تصفيه پساب هاي صنعتي

Experimental investigation of effective parameters on stability of emulsion liquid membrane for industrial wastewater treatment

ﻧﮕﺮاﻧﯽﻫﺎي زﯾﺎدي درﻣﻮرد ﺑﻪ ﺣﺪاﻗﻞ رﺳﺎﻧﺪن ﭘﺴﺎبﻫﺎي ﺻﻨﻌﺘﯽ در ﺟﺮﯾﺎن ﻫﺎي ﻣﺎﯾﻊ وﺟﻮد دارد. ﺟﺮﯾــﺎن آﺑــﯽ آﻟﻮده ﺑﻪ ﯾﻮنﻫﺎي ﻓﻠﺰات ﺳﻨﮕﯿﻦ ﻣﺨﺘﻠﻒ ﻏﺎﻟﺒﺎً از ﻓﺮآﯾﻨﺪﻫﺎي ﺻﻨﻌﺘﯽ ﻣﺨﺘﻠﻒ ﺑﻪوﺟﻮد ﻣﯽآﯾﺪ و اﯾﻦ ﻣﺴﺎﺋﻞ ﺑﺎﻋﺚ ﺷﺪه ﺗﻮﺟﻪ ﻣﺤﻘﻘﯿﻦ زﯾﺎدي ﺑﻪ ﺟﺪاﺳﺎزي اﯾﻦ ﻓﻠﺰات ﺟﻠﺐ ﺷﻮد. روش ﻫﺎي ﺑﺴﯿﺎري ﺑﺮاي ﺑﺎزﯾﺎﺑﯽ ﻓﻠﺰات ﺳــﻨﮕﯿﻦ از زﺑﺎﻟﻪ ﻫﺎي ﺻﻨﻌﺘﯽ ﻃﺮاﺣﯽ ﺷﺪه اﻧﺪ ﮐﻪ اﺳﺘﺨﺮاج ﺑﺎ ﺣﻼل، ﺑﺎرش ﺗﺒﺎدل ﯾﻮﻧﯽ، اﻟﮑﺘﺮوﻟﯿﺰ، ﺟﺪاﺳﺎزي ﺑﺎ ﻏﺸﺎء و... از ﺟﻤﻠﻪ اﯾﻦ روش ﻫﺎ ﻣﯽ ﺑﺎﺷﺪ. ﻏﺸﺎء ﻣﺎﯾﻊ اﻣﻮﻟﺴﯿﻮﻧﯽ ﺑﻪ ﻋﻨﻮان اﺑﺰاري ﺑﺎ ﻗﺎﺑﻠﯿﺖ ﮔــﺰﯾﻨﺶﭘــﺬﯾﺮي ﺑــﺎﻻ در رﻗــﺖ ﻫﺎي ﭘﺎﯾﯿﻦ ﺑﺮاي ﺟﺪاﺳﺎزي اﯾﻦ ﻓﻠﺰات ﻣﻮرد اﺳﺘﻔﺎده ﻗﺮار ﮔﺮﻓﺘﻪ اﺳﺖ. در واﻗــﻊ ﻏﺸــﺎء ﻣــﺎﯾﻊ اﻣﻮﻟﺴــﯿﻮﻧﯽ ﺷــﮑﻞ ﺗﻮﺳﻌﻪ ﯾﺎﻓﺘﻪ اﺳﺘﺨﺮاج ﺑﺎ ﺣﻼل اﺳﺖ ﮐﻪ در آن اﺳﺘﺨﺮاج و ﺗﻬﯽ ﺳﺎزي ﻫﻢزﻣﺎن در ﯾﮏ ﻣﺮﺣﻠﻪ ﺻﻮرت ﻣﯽﮔﯿــﺮد. در اﯾﻦ ﻣﻘﺎﻟﻪ ﺑﻪ ﺑﺮرﺳﯽ اﺳﺘﻔﺎده از ﻏﺸﺎ ﻣﺎﯾﻊ اﻣﻮﻟﺴﯿﻮﻧﯽ ﺟﻬﺖ ﺣﺬف ﻣﺲ از ﻧﻤﻮﻧﻪ ﭘﺴﺎب ﺑﺎ ﻏﻠﻈــﺖ ppm 100 و ﻧﯿﺰ ﻋﻮاﻣﻞ ﻣﻮﺛﺮ ﺑﺮ ﻋﻤﻠﮑﺮد آن از ﻗﺒﯿﻞ اﺛﺮ ﻏﻠﻈﺖ ﺳﻮرﻓﮑﺘﺎﻧﺖ، زﻣﺎن ﺑﻬﯿﻨﻪ ﺗﻤﺎس و ﺳــﺮﻋﺖ ﻫﻤــﺰن ﭘﺮداﺧﺘــﻪ ﺷﺪه اﺳﺖ. ﺷﺮاﯾﻂ ﺑﻬﯿﻨﻪ ﺑﻪدﺳﺖ آﻣﺪه ﻋﺒﺎرﺗﻨﺪ از mM 0.6 ﻏﻠﻈﺖ ﺳﻮرﻓﮑﺘﺎﻧﺖ، 5 دﻗﯿﻘﻪ زﻣﺎن ﺑﻬﯿﻨﻪ اﺳﺘﺨﺮاج، و rpm 300 دور ﻫﻤﺰن ﻣﯽﺑﺎﺷﺪ.

There are a lot of concerns about minimizing the amount of industrial wastewater. Extraction and recovery of heavy metals from wastewater is more attractive than methods such as precipitation. Many researches had investigated the elimination of heavy metal ions from wastewater. Emulsion liquid membrane is one of the separation methods with high selectivity at low contaminant concentration. In this paper, application of emulsion liquid membrane for remove copper from waste water with concentration of 100 ppm is investigated. The effect of some parameters such as surfactant concentration and stirring speed and contact time on the separation performance are studied. The obtained optimum conditions are 0.6 mM for concentration of surfactant, 5 min the contact time and 300 rpm for stirring speed. This study can be useful for future new applications and innovations in the case of emulsion liquid membrane in many different industries such as petroleum and oil refinery.