Name: Design styles
Uploaded: 2022-04-13
Duration: 2 min 10 s
Description: EMS420U EXPERIMENTAL DESIGN & PRACTICE 2 WATER PURIFICATION Presented by Group 17: Cipriani Lagrange-Kelvin, Rojeh Alokla , Kezia Thayaparan & Yusra Sheekh.

EMS420U EXPERIMENTAL DESIGN & PRACTICE 2 WATER PURIFICATION Presented by Group 17: Cipriani Lagrange-Kelvin, Rojeh Alokla , Kezia Thayaparan & Yusra Sheekh. 

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EMS420U EXPERIMENTAL DESIGN & PRACTICE 2 WATER PURIFICATION Presented by Group 17: Cipriani Lagrange-Kelvin,  Rojeh   Alokla , Kezia Thayaparan & Yusra  Sheekh

BACKGROUND & METHODOLOGY. TEXT BOX. CIPRIANI. 

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Week 11 Measured the absorbance of the "contaminated water" and gave a reading of 0.714A [Figure 3]. Inserted the measured absorbance (y-value) into the concentration vs absorbance graph equation y=0.0019x+0.001 [Figure 2], to find the concentration (x-value) of the Ni+2 ions. The concentration was determined to be 375.263 mM .. 

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Week 11 Measured the absorbance of the "contaminated water" and gave a reading of  0.714A  [Figure 3]. Inserted the measured absorbance (y-value) into the concentration vs absorbance graph equation y=0.0019x+0.001 [Figure 2], to find the concentration (x-value) of the Ni+2 ions. The concentration was determined to be  375.263  mM .

Concentration mM/L Absorption 722.0nm 500.0 1.018 400.0 0.806 200.0 0.407 100.0 0.187 50.0 0.098

How the concentration of Ni+2 was calculated? Week 9 Prepared 5 different solutions of NiSO4 with concentration of 50, 100, 200, 400 & 500mM [Figure 1]. Measured the absorbance of the solutions using UV-Vis scan. Recorded the absorbance values [Figure 1] and plotted a calibration curve [Figure 2]. Rojeh  Akola

500 400 200 100 50 1.018 0.80600000000000005 0.40699999999999997 0.187 9.8000000000000004E-2

[Figure 4 ]. How the density of sulfonate groups per gram of resin was determined. Week 10 To neutralise the amberlite solution, a small amount of Naoh was poured from the burette into the beaker during the titration. This process was repeated, with the volume of Naoh added and the pH value of the solution recorded after 5-10 minutes [Figure 4]. A graph of pH vs. volume of Naoh was used to generate the equation y=0.108x + 4.7072 [Figure 5]. Kezia Thayaparan. 

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How the density of sulfonate groups per gram of resin was determined. Week 10 To  neutralise  the amberlite solution, a small amount of  Naoh  was poured from the burette into the beaker during the titration. This process was repeated, with the volume of  Naoh  added and the pH value of the solution recorded after 5-10 minutes [Figure 4]. A  graph of pH vs. volume of  Naoh  was used to generate the equation  y=0.108x + 4.7072  [Figure 5]. Kezia Thayaparan

PH 14 21 28 32 36 40 44 48 4.3099999999999996 7.94 8.73 9.0399999999999991 9.1 9.1 8.98 8.85

Volume of NaOH pH 14 4.31 21 7.94 28 8.73 32 9.04 36 9.10 40 9.10 44 8.98 48 8.85

Substituting pH  7 into the equation y=0.108x + 4.7072  yielded  21.230 cm 3   as the volume required to  neutralise  the solution. The number of moles of Sodium Hydroxide was calculated using the molarity equation: Moles = concentration x volume  = 0.05 x 0.02123 =  1.0615 x10  -3  mol Density  = mass/volume = 1.0615x10 -3 /1 =  0.0010615 g/mol