1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
nalin [4]
3 years ago
9

A restaurant and dairy are participating in a community digester pilot program within the UMD Industrial Park. The following was

te stocks are currently treated in the anaerobic digester: waste cooking oil, glass clippings, and cow manure. There is 200 gallons of waste cooking oil delivered per week, six 50 gallons barrels of glass clippings per week, and 500 Liters of cow manure per day. The feedstocks have the following VS concentrations and methane production potentials:________.
Waste cooking oil: 25,000 mg/L VS; 600 L CH4/g VS Grass Clippings: 15,000 mg/L VS; 300 L CH4/g VS Cow Manure: 5,000 mg/L VS; 150 L CH4/g VS
What is the daily methane production in Liters?
Engineering
1 answer:
Elena L [17]3 years ago
8 0

Answer:

2727000 Liters

Explanation:

Determine the daily methane production in liters

<u><em>For waste cooking oil </em></u>;

Delivered amount in liters  = 757.082 liters per week

daily = 757.082 / 7 = 108.154 L/day

waste vs concentration = 25,000 mg/L

Its volatile solid  = 25000 * 10^-3 (g/l) * 108.154 L/day

                           = 2703.864  g/day

hence methane production in liters

= 600 L/g * 2703.864 g/day

= 1622318.57 L

<u><em>For cow manure </em></u>

Delivered amount in liters = 500 liters / day

Vs concentration = 5000 mg/l

Hence amount of Vs = 5000 * 10^-3 * 500  = 2500 ( g/day)

methane production in liters

= 150 * 2500 = 375000 liters

<u><em>For glass clippings </em></u>

Delivered amount in liters per day  = 1135.62 / 7 = 162.23 L/day

amount of Vs = 15000 * 10^-3 (g/L) * 162.23 L/day = 2438.45 ( g/day )

hence the methane production in liters

= 300 * 2433.45 = 730035 L

Hence ∑ daily methane production of each waste

=  1622318.57 + 375000 + 730035 = 2727000 Liters

You might be interested in
A heat recovery system​ (HRS) is used to conserve heat from the surroundings and supply it to the Mars Rover. The HRS fluid loop
blagie [28]

Answer:

0.304 L of Freon is needed

Explanation:

Q = mCT

Q is quantity of energy that must be removed = 47 BTU = 47×1055.06 = 49587.82 J

C is specific heat of Freon = 74 J/mol.K = 74 J/mol.K × 1 mol/120 g = 0.617 J/g.K

T is temperature in the area of Mars = 189 K

m = Q/CT = 49587.82/(0.617×189) = 452.23 g = 452.24/1000 = 0.45223 kg

Density of Freon = specific gravity of Freon × density of water = 1.49 × 1000 kg/m^3 = 1490 kg/m^3

Volume of Freon = mass/density = 0.45223/1490 = 0.000304 m^3 = 0.000304×1000 = 0.304 L

7 0
2 years ago
How does the clearance volume affect the efficiency of the Otto cycle?
eduard

Answer:

Explanation:

A smaller clearance volume means a higher compression. A higher compression means better thermal efficiency. However a compression ratio too high might be troublesome, as it can cause accidental ignition of the fuel-air mix. This is the reason why Otto cycle engines have lower compressions that Diesel engines. In a Diesel engine the mix ignites by compression instead of a spark.

7 0
3 years ago
Say you have a random, unordered list containing 4096 four-digit numbers. Describe the most efficient way to: sort the list and
Debora [2.8K]

Answer:

Answer explained below

Explanation:

It is given that numbers are four-digit so maximum value of a number in this list could be 9999.

So we need to sort a list of integers, where each integer lies between [0,9999].

For these given constraints we can use counting sort which will run in linear time i.e. O(n).

--------------------------------------------------------------------------------

Psuedo Code:

countSort(int numList[]) {

int count[10000];

count[i] = 0; for all i;

for(int num in numList){

count[num]+= 1;

}

return count;

}

--------------------------------------------------------------------------------

Searching in this count array will be just O(1).

E.g. Lets say we want to search if 3 was present in the original list.

Case 1: it was present in the original list:

Then the count[3] would have been incremented by our sorting algorithm. so in case element exists then count value of that element will be greater than 0.

Case 2: it was not present:

In this case count[3] will remain at 0. so in case element does not exist then count of that element will be 0.

So to search for an element, say x, we just need to check if count[x]>0.

So search is O(1).

Run times:

Sorting: O(n)

Search: O(1)

6 0
3 years ago
In part A you are asked to write the pseudocode for the program. In part B you are asked to write the syntax of the code for the
Naya [18.7K]

Answer:

C++.

Explanation:

#include <iostream>

#include <string>

using namespace std;

///////////////////////////////////////////////////////////////

int main() {

   string quote, book;

   int page;

   

   cout<<"What is your favorite quote from a book?"<<endl;

   getline(cin, quote);

   cout<<endl;

   /////////////////////////////////////////////

   cout<<"What book was that quote from?"<<endl;

   getline(cin, book);

   cout<<endl;

   /////////////////////////////////////////////

   cout<<"What page was that quote from?"<<endl;

   cin>>page;

   cout<<endl;

   /////////////////////////////////////////////

   int no_of_upper_characters = 0;

   for (int i=0; i<quote.length(); i++) {

       if (isupper(quote[i]))

          no_of_upper_characters++;

   }

   

   cout<<"No. of upper case characters: "<<no_of_upper_characters<<endl;

   /////////////////////////////////////////////

   int no_of_characters = quote.length();

   cout<<"No. of characters: "<<no_of_characters<<endl;

   /////////////////////////////////////////////

   bool isDog = false;

   for (int i=0; i<quote.length(); i++) {

       if (isDog == true)

           break;

       else if (quote[i] == 'd') {

           for (int j=i+1; j<quote.length(); j++) {

               if (isDog == true)

                   break;

               else if (quote[j] == 'o') {

                   for (int z=j+1; z<quote.length(); z++) {

                       if (quote[z] == 'g') {

                           isDog = true;

                           break;

                       }

                   }

               }

           }

       }

   }

   

   if (isDog == true)

       cout<<"This includes 'd' 'o' 'g' in the quote";

   //////////////////////////////////////////////

   return 0;

}

3 0
3 years ago
A tool chest has 950 N weight that acts through the midpoint of the chest. The chest is supported by feet at A and rollers at B.
Mazyrski [523]

Answer:

P > 142.5 N  (→)

the motion sliding

Explanation:

Given

W = 959 N

μs = 0.3

If we apply

∑ Fy = 0 (+↑)

Ay + By = W

If  Ay = By

2*By = W

By = W / 2

By = 950 N / 2

By = 475 N (↑)

Then  we can get F (the force of friction) as follows

F = μs*N = μs*By

F = 0.3*475 N

F = 142.5 N (←)

we can apply

P - F  > 0

P  > 142.5 N (→)

the motion sliding

6 0
3 years ago
Other questions:
  • To ensure safe footing on penetrable surfaces,use?
    5·1 answer
  • Describe the meaning of the different symbols and abbreviations found on the drawings/documents that they use (such as BS8888, s
    12·1 answer
  • Describe the steps, tools, and technology needed in detail and
    12·1 answer
  • Water is the working fluid in an ideal Rankine cycle. Superheatedvapor enters the turbine at 10MPa, 480°C, and the condenser pre
    10·1 answer
  • A city emergency management agency and a construction company have formed a public-private partnership. The construction company
    15·1 answer
  • Yooo. does anyone have tin foil and tape mask that they can take a picture of and send it ?
    5·1 answer
  • 2.44mW of incident 520 nm light is directed through a1 cm sample cuvette and 0.68 mW of Plight exits the sample what is the abso
    9·1 answer
  • 1. A hydro facility operates with an elevation difference of 50 m and a flow rate of 500 m3/s. If the rotational speed is 90 RPM
    12·1 answer
  • How many ase certifications are there for automotive technicians?
    7·1 answer
  • Define Mechanism and mechanics.​
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!