Based on your understanding of Life Cycle Thinking and the green metrics calcula
ID: 295923 • Letter: B
Question
Based on your understanding of Life Cycle Thinking and the green metrics calculated from the PMI tool, list the pros and cons of the two processes. Which process would you choose for the industrial production, and why?
Experiment 5 - Synthesis of a Polymer PMI tool Instruction: Please only fill in the blanks that are highlighted in bright yellow. The green metrics will be calculated for you. All of the amounts should have the unit of "mg". If you did not use a material, please enter "O". "White Solid" method Thin Film" method Green metrics Green metrics Process Mass Intensity (PMI) Environmental Impact (EI) Solvent Intensity Water Intensity Process Mass Intensity (PMI) Environmental Impact (EI) olvent Intensity Water Intensity Product mg Product mg Total mass of raw material Total mass of waste Total mass of solvents Total mass of water 0 mg 0 mg 0 mg 0 mg Total mass of raw material Total mass of waste Total mass of solvents Total mass of water 0 mg 0 mg 0 mg 0 mg Material used in synthesis Material used in synthesis Norborene DCM Grubbs II solution mg mg mg Norborene Chloroform Grubbs II solution mg mg mg Quenching Ethyl vinyl ether mg Purification Methanol mgExplanation / Answer
According to the white solid method it is termed as the accounatabilty of the green metrix in which the environemental factors , solvent intensity, water intensity and the PMI is calculated. this methods also include the quenching agent and the purifications which will impart more strength to the material after the manufacturing as quenching is a work hardening process which will reduce the internal cracks and remove the internal residual stresses from the product and nthe purifications will impart the fine quality and the remove of the impurities which are responsible for the failure of the product during the working condtions.
on the other hand if we take the case of the thin film method tyen we can found that the process or the method is only limited to the green metrics and the quantification of the material used but there is not quenching and the purification involved.
thus if we need to select which method will be good then it will be the white solid method because it is not only qualified under the safety measure due to quenching but it will also manufactured the quality products. and also along with this it will be less costly because it will required less maintainance as compared to the thin flim method.