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s) You are setting up a composting batch and have 8 tonnes (metric tons) of poultry litter with a C:N of 14, a dry weight % of N of 2.7%, density of 500 kg/m³, and a moisture content of 33%. You are aiming for a C:N of 25:1 for optimal composting performance, so you are considering several options of other wastes to make up your batch. The following table shows the moisture content, C:N and cost per tonne of each material. You estimate that you will lose 20% of the initial mass during the composting process. Determine which would provide the best return on investment if you can sell your compost for $80/m³ and the density of the finished compost is 400 kg/m³. Waste Type Shredded newsprint Sawdust RDF Moisture content C:N 152 530 60 18 40 45 Dry % N 0.2 0.1 1.1 Cost/tonne $200 $110 $80

s) You are setting up a composting batch and have 8 tonnes (metric tons) of poultry litter with a C:N of 14, a dry weight % of N of 2.7%, density of 500 kg/m³, and a moisture content of 33%. You are aiming for a C:N of 25:1 for optimal composting performance, so you are considering several options of other wastes to make up your batch. The following table shows the moisture content, C:N and cost per tonne of each material. You estimate that you will lose 20% of the initial mass during the composting process. Determine which would provide the best return on investment if you can sell your compost for $80/m³ and the density of the finished compost is 400 kg/m³. Waste Type Shredded newsprint Sawdust RDF Moisture content C:N 152 530 60 18 40 45 Dry % N 0.2 0.1 1.1 Cost/tonne $200 $110 $80

Structural Analysis
Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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s) You are setting up a composting batch and have 8 tonnes (metric tons) of poultry litter with a C:N of 14, a dry weight % of N of 2.7%, density of 500 kg/m³, and a moisture content of 33%. You are aiming for a C:N of 25:1 for optimal composting performance, so you are considering several options of other wastes to make up your batch. The following table shows the moisture content, C:N and cost per tonne of each material. You estimate that you will lose 20% of the initial mass during the composting process. Determine which would provide the best return on investment if you can sell your compost for $80/m³ and the density of the finished compost is 400 kg/m³. Waste Type Shredded newsprint Sawdust RDF Moisture content 18 40 45 C:N Dry % N 152 0.2 530 0.1 60 1.1 Cost/tonne $200 $110 $80
Transcribed Image Text:s) You are setting up a composting batch and have 8 tonnes (metric tons) of poultry litter with a C:N of 14, a dry weight % of N of 2.7%, density of 500 kg/m³, and a moisture content of 33%. You are aiming for a C:N of 25:1 for optimal composting performance, so you are considering several options of other wastes to make up your batch. The following table shows the moisture content, C:N and cost per tonne of each material. You estimate that you will lose 20% of the initial mass during the composting process. Determine which would provide the best return on investment if you can sell your compost for $80/m³ and the density of the finished compost is 400 kg/m³. Waste Type Shredded newsprint Sawdust RDF Moisture content 18 40 45 C:N Dry % N 152 0.2 530 0.1 60 1.1 Cost/tonne $200 $110 $80
Expert Solution
Step 1

Given,

weight=8 tonnes

C:N =14

dry weight % of N= 2.7%,

density = 500 kg/m³

moisture content= 33%. 

Aim C: N = 25:1 

20% loss of initial, mass during the composting process

Civil Engineering homework question answer, step 1, image 1

To determine,

the best return on investment if compost is sold for $80/m³ and the density of the finished compost is 400 kg/m³.

steps

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