بررسی کارآیی نانو ذره اکسید روی سنتز شده در حذف نفت از پساب ساختگی: یک مطالعه آزمایشگاهی

زﻣﯿﻨﻪ و ﻫﺪف: آﻟﻮده ﺷﺪن آب ﺑﻪ ﺗﺮﮐﯿﺒﺎت ﻧﻔﺘﯽ ﻣﻮﺟﺐ ﮔﺴﺘﺮش ﻓﻨﺎوریﻫﺎی ﺟﺪﯾﺪ ﺑﺮای ﺣﺬف آﻟﻮدﮔﯽﻫﺎی ﻧﻔﺘﯽ ﮔﺮدﯾﺪه اﺳﺖ. ﻫﺪف از اﻧﺠﺎم اﯾﻦ ﭘﮋوﻫﺶ ﺗﻌﯿﯿﻦ ﮐﺎرآﯾﯽ ﻧﺎﻧﻮ اﮐﺴﯿﺪ روی در ﺟﺬب ﻧﻔﺖ از ﻣﺤﯿﻂ آﺑﯽ ﺑﻮد. ﻣﻮاد و روشﻫﺎ: در اﯾﻦ ﭘﮋوﻫﺶ آزﻣﺎﯾﺸﮕﺎﻫﯽ ﮐﻪ در ﺗﺎﺑﺴﺘﺎن ﺳﺎل 1398 اﻧﺠﺎم ﮔﺮﻓﺖ، از ﻧﺎﻧﻮاﮐﺴﯿﺪ روی ﺑﻪ ﻋﻨﻮان ﺟﺎذب ﺑﺮای ﺣﺬف آﻟﻮدﮔﯽ ﻧﻔﺘﯽ از ﭘﺴﺎب اﺳﺘﻔﺎده ﺷﺪ. ﺧﺼﻮﺻﯿﺎت ﺟﺎذب ﺑﺎ اﺳﺘﻔﺎده از آﻧﺎﻟﯿﺰ ftir fesem ، xrd و icp-oes ﺗﻌﯿﯿﻦ ﺷﺪ. آزﻣﺎﯾﺸﺎت ﺟﺬب ﺑﻪ ﺻﻮرت ﻧﺎﭘﯿﻮﺳﺘﻪ ﺑﺎ اﺳﺘﻔﺎده از ﻣﺤﻠﻮلﻫﺎی آزﻣﺎﯾﺸﮕﺎﻫﯽ ﺣﺎوی ﻧﻔﺖ اﻧﺠﺎم ﮔﺮﻓﺖ و ﺷﺮاﯾﻂ ﺑﻬﯿﻨﻪ ﺟﺬب ﺑﺎ ﺗﻐﯿﯿﺮ ﻓﺎﮐﺘﻮرﻫﺎی ﻣﺆﺛﺮ ﺑﺮ ﺟﺬب ﻣﺎﻧﻨﺪ ph، ﻏﻠﻈﺖ ﻧﻔﺖ، زﻣﺎن ﺗﻤﺎس و ﻣﻘﺪار ﺟﺎذب در ﺳﻄﻮح ﻣﺨﺘﻠﻒ، ﻣﻮرد ﺑﺮرﺳﯽ ﻗﺮار ﮔﺮﻓﺖ. ﺟﻬﺖ ﭘﺮدازش دادهﻫﺎ از ﻃﺮح ﺑﻠﻮﮐﯽ ﮐﺎﻣﻼً ﺗﺼﺎدﻓﯽ اﺳﺘﻔﺎده ﺷﺪ. ﯾﺎﻓﺘﻪﻫﺎ: ﻣﯿﺰان ﺟﺬب ﺑﻌﺪ از 20 دﻗﯿﻘﻪ و ﺑﻪ ﻣﻘﺪار 74/1 درﺻﺪ و ﺑﻪ ﺻﻮرت ﺛﺎﺑﺖ درآﻣﺪ. ﺑﯿﺶﺗﺮﯾﻦ ﻣﯿﺰان ﺟﺬب در 7=ph ﺑﻪﻣﯿﺰان 87/25 درﺻﺪ و ﮐﻤﺘﺮﯾﻦ ﻣﻘﺪار آن در 9=ph ﺑﻪﻣﯿﺰان 66/9 درﺻﺪ ﺣﺎﺻﻞ ﺷﺪ. ﻣﯿﺰان ﺟﺬب ﻧﺎﻧﻮ ذره ﺑﺎ اﺧﺘﻼف ﻣﻌﻨﯽ داری ﻧﺴﺒﺖ ﺑﻪ ﺳﺎﯾﺮﯾﻦ در 1/5 ﮔﺮم در ﻟﯿﺘﺮ ﺑﯿﺶﺗﺮﯾﻦ 79/9 درﺻﺪ ﺑﻮد. در ﻧﻬﺎﯾﺖ ﻣﯿﺰان ﺟﺬب ﻧﻔﺖ در ﻏﻠﻈﺖ 100 ﻣﯿﻠﯽ-ﮔﺮم/ﻟﯿﺘﺮ ﺑﻪ ﻣﯿﺰان 83/5 درﺻﺪ ﺑﺎ اﺧﺘﻼف ﻣﻌﻨﯽداری ﺑﯿﺶﺗﺮ از دﯾﮕﺮ ﻏﻠﻈﺖﻫﺎ دﯾﺪه ﺷﺪ. ﺟﺬب ﻧﻔﺖ ﺗﻮﺳﻂ ﻧﺎﻧﻮذره اﮐﺴﯿﺪ روی ﺑﺎ ﻣﺪل freundlich ﻣﻄﺎﺑﻘﺖ داﺷﺖ r^2=0/99 . ﻧﺘﯿﺠﻪﮔﯿﺮی: ﺟﺎذب ﻧﺎﻧﻮاﮐﺴﯿﺪ روی ﮐﺎرآﯾﯽ ﺑﺎﻻﯾﯽ در ﺟﺬب ﻧﻔﺖ از ﭘﺴﺎب دارد و ﻣﯽﺗﻮاﻧﺪ در رﻓﻊ آﻟﻮدﮔﯽ ﻧﻔﺘﯽ ﻣﻮرد اﺳﺘﻔﺎده ﻗﺮار ﮔﯿﺮد.

evaluation of the efficiency of synthesized zinc oxide nanoparticles in the removal of oil from syntheticwastewater: a laboratory study

background and objectives: diabetic patients are highly susceptible to cardiovascular involvement. therefore, the aim of the present study was to determine the effect of six weeks of moderate-intensity endurance training on serum levels of klotho and expression of the fibroblast-23 growth factor fgf23 gene in the hearts of diabetic rats.materials and methods: in this experimental study, 21 adult male wistar rats were randomly divided into three groups of seven: diabetic training group dt , diabetic control group dc , and healthy control group hc . diabetes was induced by intraperitoneal injection of streptozotocin stz . animals performed moderate-intensity endurance training for six weeks. serum levels of klotho and fgf23 gene expression in the heart tissue were evaluated by elisa method and real time pcr, respectively. data were analyzed by one-way analysis of variance and scheffe’s post hoc test.results: the findings showed that after six weeks of training, blood glucose concentration mg/dl in the dt group was significantly lower than the dc group p=0.001 , and serum levels of klotho ng/ml was significantly increased compared to the dc p=0.032 , but there was no significant difference between the dt and dc groups in the expression of fgf23 gene relative expression p=0.171 .conclusion: the results suggested that moderate-intensity endurance training has a positive effect on the serum levels of klotho and blood glucose, and it appears to be somewhat protective of heart function.key words: klotho, fgf23, endurance training, diabetes, heart, rat funding: this study was funded by university of mohaghegh ardabili.conflict of interest: none declared.ethical approval: the ethics committee of ardabil university of medical sciences approved the study ir.arums.rec.1398.251 . how to cite this article: bolboli l, khajehlandi m. the effect of six weeks of moderate-intensity endurance training on serum levels of klotho and expression of the fibroblast-23 growth factor gene fgf23 in the hearts of diabetic rats: an experimental study. j rafsanjan univ med sci 2021; 20 4 : 371-86. [farsi]