Read the Experimental section of the attached paper $[$Pressurized liquid extraction of radish seed oil using ethanol as solvent $(...)],$ in which essential oils are obtained via solvent extraction.

a$)(4$ points$)$ Create a block flow diagram for this process following the process described in the manuscript $($section $2\mathrm{.}3\mathrm{.}1.$ Oil extraction$).$ Be sure to list major conditions and identify material flows. Be sure to indicate what stream has your essential oil.

b$)(2$ points$)$ Identify in your block flow diagram what steps are reaction, and which are separation$/$purification$.$

c$)(4$ points$)$ Maximum oil yield of $30\%$ was obtained at $120C$ and $10$MPa with ethanol flow of $1mlmi{n}^{-1}$ after $100$min. Note that oil yield is "expressed on a dry basis and calculated as the ratio between the oil mass obtained and the mass of seeds added to the extractor." Calculate how much ethanol and radish seeds are required to produce $1$ ton of essential oil per dav.

d$)(4$ points$)$ Describe how you can compute the heat and work required for this process. Be sure to list what information you require to complete this calculation.

e$)(2$ points$)$ Discuss: does the paper provide enough information to simulate this process using a process simulator software like ASPEN ${?}^{o+}?$ If not, what additional information do you require?

$2\mathrm{.}3\mathrm{.}1.$ Oil extraction

The tests for conducting extraction by PLE using ethanol as a solvent were performed in a laboratory unit, as shown in Fig. $1[15].$ The PLE procedure consisted of weighing $5\mathrm{.}2g$ of seeds, which were added to the extractor $($E$).$ The oven $($F$)$ was then heated to the test temperature $(120,135$ or $150C)$ and the extractor was filled with ethanol until the working pressure was reached or $15$MPa. In the next step, the extractor was placed in the oven to start the static extraction time $(10$ or $30$min. After the respective time, the extraction was started with the ethanol flow rate kept constant $(1,2,3$ or $4mLmi{n}^{-1})$ during the pre$-$established time. After the extracts had been collected, the ethanol was removed by evaporation in an oven with air circulation $($Marconi $-$ MA $035)$ until the sample weight remained stable. The oil yield data $(Y_O)$ were expressed on a dry basis and calculated as the ratio between the oil mass obtained and the mass of seeds added to the extractor. The oil mass obtained was comprised of the fraction soluble in $n-$hexane, referred to as the lipid material, and the non$-$lipid fraction $(n-$hexane insoluble fraction$)$ which includes polyphenols, pigments, soluble sugar and soluble proteins $[31].$