3.2.3. Influence of different diluent
The effect of diluents on extraction of Eu (III) with O: A=1 and extractant : diluent = 0.3 : 1, was investigated using some different aromatic and aliphatic diluents, such as methyl isobutyl ketone (MIBK), toluene, chloroform, kerosene, white spirt and o-xylene. The obtained results in Fig. 5 show that europium extraction was maximum using chloroform, toluene and o-xylene, as diluent. The sequence takes the following order of chloroform > xylene ≥ toluene > whit spirt > kerosene > MIBK. It is attributed to the dipole moment (µ) and dielectric constant properties of diluents as demonstrated at Table 1. The dipole moment is indicated to the polarity properties. It is means that the high dipole moment is
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10-11. These Figures show that the SF increases by decreasing the acid concentration. It is predicted that the optimum conditions for maximum separation of Eu(III) from Sr(II) by polyglycerol phthalate is carried out from 3M nitric acid solution. The extraction and separation of Eu and Sr with polyglycerol phthalate is acidity dependent. The variation of cations concentration study was carried out in the range 5 – 100 mg/L and the separation was more feasible in presence of Ca2+. The separation factor has a maximum value SF = 59 and 45 in case of 50mg/L Ca+2 and 3M nitric acid, …show more content…
A mixed of 50 mg/L of each Eu3+ and Sr2+ have been extracted using polyglycerol phthalate from 3M (HCl and HNO3) acid solutions and 5mg/L cations (Na+ and Ca2+). A comparison between E % of Eu3+ and Sr2+ from individual and mixed solution are listed in Table 2. The experimental results obtained revealed that a separation between two ions from the acids and interfering cations solutions is achieved but in a less extent than that predicated previously in Figs. 10-11. This trend may be related to the interference caused by the existence of the two metals in the same simulated solution which affect the extraction equilibrium and consequently the value of SF (Eu/Sr). Besides, the decrease in the separation factor was due to the co-extraction of
To separate the Ramos mixture the group first first conducted the dissolve, filter, evaporate method, and prepared the lab for as well. Though for this lab the substance
A mixture of 0.25 g of camphor (1.64 mmol), 1.5 mL of methanol, and 0.25 g of sodium borohydride (6.60 mmol, NaBH4) was boiled for 2 minutes. Moreover, the addition of 10 mL of ice deionized water resulted in a white solid after the organic solution was vacuum filtered. The organic solid was dissolved in 10 mL of dichloromethane (CH2Cl2) and small amounts of anhydrous sodium sulfate (NaSO4) to dry. The organic solution was decanted and evaporated for melting point (203.3-203.8 °C), NMR, and IR spectroscopy. Product formation and heats of formation (borneol = -1.203675E6 kJ/mol, isoborneol = -1.203687E6 kJ/mol) were analyzed.
The main objective of this experiment was to isolate the compounds in a given mixture, which was composed of 50% fluorene, 42% o-toluic acid, and 10% 1, 4-dibrombenzene. Techniques of extraction and crystallization was used to perform the procedure. The two major compounds in the mixture (fluorene and o-toluic acid) was collected; these were separated by two major methods. The o-toluic acid was extracted first by using macroscale extraction and testing for acidity. By adding a strong acid to the aqueous layer, which contained o-toluic acid, the solution becomes acidic and also allows the solid in the layer to precipitate.
I agree with you Carmesha, I looked into to both websites and mainly men of Caucasian and African American descent were represented. I was surprised to see the lack of representation of other ethnic groups and women. Also, there was no older and disabled pictured on the website at all that I could find. I was surprised by this because we all wear shoes and I thought it would have every group represented.
Hence in the sample only copper (II) chloride will dissolve leaving the sodium chloride behind once filtered through. The copper (II) chloride can then be obtained by evaporating the methanol; which has a boiling point of 65 degrees celsius whilst copper (II) chloride has a boiling point of 993 degrees celsius, thus allowing the methanol to be easily evaporated out of the solution eliminating concerns of the copper (II) chloride evaporating alongside the methanol. Purpose To investigate different methods of separating copper (II) chloride and sodium chloride in order to obtain the original masses of both substances.
The heart wrenching story of Jeanette Walls and her askew family never fails to have an emotional impact on its readers. People have come to have mixed feelings on The Glass Castle; its real world problems tend to leave readers speechless, confused, sad, crying, or even laughing their behinds off. When I read the book I was left with all of those emotions. Overall I thought the book was amazing and really dug deep into Jeanette’s life and I anticipated the release of the movie hitting cinemas on August 11th, 2017. When I first saw the movie I was a little confused as to why so many details were left out from the plot.
The time spent at Western Governors University (WGU) has been a great opportunity to learn about myself, my goals, and understand the factors that influence my career choice and my success. When I began at WGU four years ago, I did not have any experience in human resource management beyond recruiting, hiring and training for the restaurant industry. In the beginning, I was uncomfortable with the limited knowledge. Yet, as time progressed, my confidence, knowledge and skills increased with each course.
There are many things I learned in my interview with Rosemary Plorin. I learned what skills are invaluable in the public relations field. What seemed to be most impressive about Plorin is growth from her humble beginnings. She did not go to college bright-eyed and ready to become the healthcare PR powerhouse she is today. She underwent a gradual change that required introspective reflection.
In the FD2 essays is where I had to do the most adjustments. Overall, I had a good central and sub claim, but I needed to fix my development, analysis, and organization. For the organization the professor said, “Need to connect concept of protesting to central claim.” I try to apply this feedback by trying to explain how the reaction that police has towards protest of blacks and whites is completely different. I explain how when whites protest the police just waited until the whole protest ease down, but when blacks protest police immediately use force and aggression to stop them.
As I reflect on the MSW program at Sacramento State University, I am grateful for the experiences I was able to receive during my field work during both years in my MSW program. I am grateful for choosing a program that includes internship as part of the requirement. I truly believe that the field work we have been provided with has given us the opportunity to learn from our mistakes and learn what being a social worker really means. The most challenging thing for me during the MSW program was starting my second year placement. It was my first time working in a medical environment and I did not know what to expect.
I found the excerpt from the book, The Life of Olaudah Equiano or Gustavus Vassa the African had left a significant impact on me after I had finished reading the entirety of chapter two. The chapter began with Equiano describing his childhood. One aspect of his childhood that had great significance on his life was the short anecdote about how when he and the other children in the area would go out to play, but they would also climb up in the trees to be lookouts for potential kidnappers so they could warn the others to attack. After he told that story, he told the one about the day his people were not there to help secure his safety so he and his sister, who were all alone, were kidnapped. That was the day that his life was changed forever.
Reflection over A Long Way Gone A Long Way Gone is a memoir written by Ismael Beah. It describes Ismael’s time as a child soldier during the Civil War in Sierra Leone. This book explains in detail the obstacles Beah had encountered during this time. A Long Way Gone is filled with violence, tragedy, drugs, war and survival.
In this interactive oral discussion, my class analyze Persepolis by Marjane Satrapi. We discussed a variety of subject matters from the time period the graphic novel took place in to topics such as the original language of the novel. This interactive oral allowed me to see how differently Persepolis could be interpreted. Even though I might not agree with everything that was said, everyone explained themselves and allowed me to see their point of view. This interactive oral affected me by allowing me to see the deeper meaning or the allegory of the entire work that is Persepolis.
The very first thing that comes to my mind about this clinical experience was how amazing it was. I had done a six-week women’s health class at Women’s Corrections in Alamosa. Two fellow students also participated in this as a service-learning project. Why it was so amazing was seeing these women grow in the six weeks from just being there to being active participants; they were asking questions and adding their own two cents. Another thing that pops into my head about this is how inspiring these women are.
Everyone belongs to a social class. Whatever reality you been born in, is going to shape the way you believe and act. Each individual is different and unique, however, is not unknown that the experiences we had over our life shape our identity. In the movie Elysium, the Earth has been contaminated. The rich people flew away to a new land created in the space named Elysium, which left those with less money behind.