In downstream processing of gluconic acid, concentrated fermentation broth containing 20% (w/w) gluconic acid is cooled in a heat exchanger prior to crystallisation. 2000 kg h^-1 liquid leaving an evaporator at 90°C must be cooled to 6°C. Cooling is achieved by heat exchange with 2700 kg h^-1 water initially at 2°C. The final temperature of the cooling water is 50°C. 

Assume (heat capacity of gluconic acid is 0.35 cal g^-1 °C^-1).

h (liquid water at 90°C = 376.9 kJ kg^-1)

h (liquid water at 6°C = 25.2 kJ kg^-1)

h (liquid water at 2°C = 8.4 kJ kg^-1 )

h (liquid water at 50°C = 209.3 kJ kg^-1)

h (gluconic acid at 90°C=0)

How much heat is removed to the cooling water?

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#Question id: 15375

#Section 1: Engineering Mathematics

F(s) is the Laplace transform of the function

f(t) = 2t²e^-t   F (1) is ......   (correct to two decimal places) 

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#Question id: 12995

#Section 2: General Biology

Which of the following constraints affect the stability α-helix, 

a) the intrinsic propensity of an amino acid residue to form an α-helix.

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c) the bulkiness of adjacent R groups.

d) the occurrence of Pro and Gly residues.

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#Question id: 16781

#Section 1: Engineering Mathematics

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#Question id: 27231

#Section 3: Genetics, Cellular and Molecular Biology

How many base pairs are there in every helical turn of Watson-Crick double helix model?

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#Section 5: Bioprocess Engineering and Process Biotechnology

What is the mass fraction for H2O in feed F and NaOH in product?