To answer: The process that would yield more product from the same sized vats over the same amount of time: batch production or continuous flow production and why. Introduction: Batch culture is also called as a closed culture in which limited substrate is added to the growth of organism inside the fermenter. While continuous culture is also called as an open culture, in which substrates are continuously supplied for the growth of microorganisms.

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Answer 1

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Definition Definition Phase during which the number of bacteria cell deaths gradually equals the number of viable or actively dividing cells due to decreased reproduction rate. Microbes utilize all nutrients present in the growth medium to multiply during the growth of the bacterial population, which results in the deposition of waste matter, toxins, and inhibitory compounds in the media. This changes media conditions, such as temperature and pH, creating an unfavorable environment for bacterial growth. Here, the growth rate becomes stabilized.

Chapter 25, Problem 13CT

Summary Introduction

To answer:

The process that would yield more product from the same sized vats over the same amount of time: batch production or continuous flow production and why.

Introduction:

Batch culture is also called as a closed culture in which limited substrate is added to the growth of organism inside the fermenter. While continuous culture is also called as an open culture, in which substrates are continuously supplied for the growth of microorganisms.

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An activated sludge plant (CSTR w/ recycle) has the following characteristics: Influent substrate concentration, So = 400 mg/L BODL (all soluble); influent VSS, Xyº = 0; effluent 3 substrate concentration, S = 10 mg/L BODL; flow rate, Q = 1000 m³/day; aeration basin 3 volume, V = 200 m³; reactor MLVSS, Xv = 4,280 mg/L; average, steady-state oxygen uptake rate, Oxygen uptake rate (OUR) = 0.3 mg 02/L-min. The biomass viability (i.e., v = Xa/Xv) was measured using the oxygen uptake rate (OUR) technique and found equal to 0.926. An aliquot of mixed liquor was placed in a small reactor, aerated without any exogenous substrate addition (i.e., starvation conditions) and it's OUR was measured over time resulting in the following data: 0 1 2 3 4 5 Time (days) OUR (mg 02/L-min) 0.3 0.274 0.243| 0.222 0.203 0.182 6 8 10 0.165 0.135 0.110 By use of the above data, the microorganism decay coefficient (b, day can be estimated if you assume that a constant relationship exists between Xa and OUR,…

(b) (c) Explain the biological requirements for microalgal growth and the main system components for a microalgal processing plant to produce biofuel. How is the system design dependent on its geographical location? A continuous microalgal production system is being developed using a raceway design to produce biofuel from CO2 sequestration. Calculate the area of the raceway (m²) to sequester 2000 tons of CO₂ per year if the growth rate is 75mg/L-day and estimate the amount of biofuel that could be produced. Clearly state any assumptions that you make.

Why does the rate of product formation level off with time?

Answer 2

Question

Definition Definition Phase during which the number of bacteria cell deaths gradually equals the number of viable or actively dividing cells due to decreased reproduction rate. Microbes utilize all nutrients present in the growth medium to multiply during the growth of the bacterial population, which results in the deposition of waste matter, toxins, and inhibitory compounds in the media. This changes media conditions, such as temperature and pH, creating an unfavorable environment for bacterial growth. Here, the growth rate becomes stabilized.

Chapter 25, Problem 13CT

Summary Introduction

To answer:

The process that would yield more product from the same sized vats over the same amount of time: batch production or continuous flow production and why.

Introduction:

Batch culture is also called as a closed culture in which limited substrate is added to the growth of organism inside the fermenter. While continuous culture is also called as an open culture, in which substrates are continuously supplied for the growth of microorganisms.

Expert Solution & Answer

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Answer 3

Question

Definition Definition Phase during which the number of bacteria cell deaths gradually equals the number of viable or actively dividing cells due to decreased reproduction rate. Microbes utilize all nutrients present in the growth medium to multiply during the growth of the bacterial population, which results in the deposition of waste matter, toxins, and inhibitory compounds in the media. This changes media conditions, such as temperature and pH, creating an unfavorable environment for bacterial growth. Here, the growth rate becomes stabilized.

Chapter 25, Problem 13CT

Summary Introduction

To answer:

The process that would yield more product from the same sized vats over the same amount of time: batch production or continuous flow production and why.

Introduction:

Batch culture is also called as a closed culture in which limited substrate is added to the growth of organism inside the fermenter. While continuous culture is also called as an open culture, in which substrates are continuously supplied for the growth of microorganisms.

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Answer 4

Question

Definition Definition Phase during which the number of bacteria cell deaths gradually equals the number of viable or actively dividing cells due to decreased reproduction rate. Microbes utilize all nutrients present in the growth medium to multiply during the growth of the bacterial population, which results in the deposition of waste matter, toxins, and inhibitory compounds in the media. This changes media conditions, such as temperature and pH, creating an unfavorable environment for bacterial growth. Here, the growth rate becomes stabilized.

Chapter 25, Problem 13CT

Summary Introduction