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Data: 1. Each 100 kg of dirty bedding contains 2.0 kg of dirt. 2. 95% of the dirt in the dirty bedding is removed before the bedding goes on to the rinse stage. 3. For each 100 kg of dirty bedding, 25 kg of CKD leaves with the clean bedding of which 22 kg is wrung back into the tub. 4. The detergent that enters the tub contains 97% CKD, and that which enters the filter contains 87%. The wet dirt that leaves the filter contains 8% CKD. (a) How much pure CKD must be supplied per 100 kg of dirty bedding? (b) What is the composition of the recycled stream?

Data: 1. Each 100 kg of dirty bedding contains 2.0 kg of dirt. 2. 95% of the dirt in the dirty bedding is removed before the bedding goes on to the rinse stage. 3. For each 100 kg of dirty bedding, 25 kg of CKD leaves with the clean bedding of which 22 kg is wrung back into the tub. 4. The detergent that enters the tub contains 97% CKD, and that which enters the filter contains 87%. The wet dirt that leaves the filter contains 8% CKD. (a) How much pure CKD must be supplied per 100 kg of dirty bedding? (b) What is the composition of the recycled stream?

Biochemistry
Biochemistry
9th Edition
ISBN:9781319114671
Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Chapter1: Biochemistry: An Evolving Science
Section: Chapter Questions
Problem 1P
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2. A group of young, unemployed (but entrepreneurial) recent UWI Chemical Engineering Graduates have developed a liquid detergent which they claim is highly effective in killing the Corona virus. Called Corona Killer Detergent (CKD) it is not only supposed to be effective when washing one's hands but also as a laundry detergent. They are in the process of developing protocols for its use in the laundry at the Couva and Caura (COVID-19) Hospitals. The following is a diagram of the sheet and pillow case (bedding) cleaning process being developed by the young engineers using CKD. CKD Dirty Bedding Clean Bedding to rinse stage AGITATED Pure CKD 97% CKD 87% CKD 8% CKD TUB FILTER Recycled CKD The bedding spends 30 minutes in an agitated tub containing CKD, and is then wrung out and sent to a rinse stage. The dirty CKD is sent to a filter in which most of the dirt is removed, and the cleaned CKD is recycled back to join a stream of pure CKD, with the combined stream serving as the feed to the washtub. Data: 1. Each 100 kg of dirty bedding contains 2.0 kg of dirt. 2. 95% of the dirt in the dirty bedding is removed before the bedding goes on to the rinse stage. 3. For each 100 kg of dirty bedding, 25 kg of CKD leaves with the clean bedding of which 22 kg is wrung back into the tub. 4. The detergent that enters the tub contains 97% CKD, and that which enters the filter contains 87%. The wet dirt that leaves the filter contains 8% CKD. (a) How much pure CKD must be supplied per 100 kg of dirty bedding? (b) What is the composition of the recycled stream?
Transcribed Image Text:2. A group of young, unemployed (but entrepreneurial) recent UWI Chemical Engineering Graduates have developed a liquid detergent which they claim is highly effective in killing the Corona virus. Called Corona Killer Detergent (CKD) it is not only supposed to be effective when washing one's hands but also as a laundry detergent. They are in the process of developing protocols for its use in the laundry at the Couva and Caura (COVID-19) Hospitals. The following is a diagram of the sheet and pillow case (bedding) cleaning process being developed by the young engineers using CKD. CKD Dirty Bedding Clean Bedding to rinse stage AGITATED Pure CKD 97% CKD 87% CKD 8% CKD TUB FILTER Recycled CKD The bedding spends 30 minutes in an agitated tub containing CKD, and is then wrung out and sent to a rinse stage. The dirty CKD is sent to a filter in which most of the dirt is removed, and the cleaned CKD is recycled back to join a stream of pure CKD, with the combined stream serving as the feed to the washtub. Data: 1. Each 100 kg of dirty bedding contains 2.0 kg of dirt. 2. 95% of the dirt in the dirty bedding is removed before the bedding goes on to the rinse stage. 3. For each 100 kg of dirty bedding, 25 kg of CKD leaves with the clean bedding of which 22 kg is wrung back into the tub. 4. The detergent that enters the tub contains 97% CKD, and that which enters the filter contains 87%. The wet dirt that leaves the filter contains 8% CKD. (a) How much pure CKD must be supplied per 100 kg of dirty bedding? (b) What is the composition of the recycled stream?
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