Q: Assume a rough estimate of MSW composition is as follows: % by weight Moisture content (%) Paper (assume dry mass all cellulose, C6H10O5) 40 8% Glass 10 - Steel 10 - Aluminum 10 - Food waste (assume dry mass all sugar, C6H12O6) 30 80% a) If 20,000 metric tonnes of this waste is for anaerobic digestion, how much methane gas would theoretically be produced? b) If 20,000 metric tonnes of this waste is for aerobic composting. How much oxygen would theoretically be demanded?

Q: Assume a rough estimate of MSW composition is as follows: % by weight Moisture content (%) Paper (assume dry mass all cellulose, C6H10O5) 40 8% Glass 10 - Steel 10 - Aluminum 10 - Food waste (assume dry mass all sugar, C6H12O6) 30 80% a) If 20,000 metric tonnes of this waste is for anaerobic digestion, how much methane gas would theoretically be produced? b) If 20,000 metric tonnes of this waste is for aerobic composting. How much oxygen would theoretically be demanded?

Solid Waste Engineering

3rd Edition

ISBN:9781305635203

Author:Worrell, William A.

Publisher:Worrell, William A.

Chapter6: Biological Processes

Section: Chapter Questions

Problem 6.6P

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Note: Don't copy from other websites solution. Estimate the total generation of Methane from 100 kg of organic waste by means of anaerobic digestion. Assume that organic waste is composed of 60 kg of C, 20 kg of O, 16 kg of N, and 4 kg of H. Please write it so that I can recognize it.
A city receives 42 tons per day of a solid waste stream with chemical formula C4H17O to their waste to energy facility each day. Estimate the air requirements to combust this waste in cubic ft per day. Assume specific weight of air is 0.075 lb/cu ft and that air is 21% oxygen by weight.
Problem 6-6 (assume the waste is fed to an anaerobic digester, not landfilled). Use the equation given attached. Find x (moles of CH4) for food and paper as well. Then based moles of methane (x), individually calculate methane generated for paper and food waste and then total it. Provide answers in tons.
You are the lead engineer on a wastewater treatment plant with a biological reactor. You are required todetermine how much biomass will be produced in kg per day in your plant. A junior engineer determines theultimate BOD of the incoming waste as 600 mg/l, with a decay constant of 0.1/d. The incoming substrateconcentration used should be the five-day BOD. The incoming flow is 75 m3/d however there are lossesupstream of the plant accounting for 15 m3/d of the flow. The target BOD discharged from the plant is 25mg/l. the kinetic constants for the system are Ks = 90 mg/L BOD5, kd = 0.2 d-1, μm = 1.5 d-1, and Y = 0.6 mg VSS/mgBOD5. Include a sketch to illustrate the biological reactor and its incoming flows.
Estimate the theoretical production of landfill gas (CH4 only) from the degradation of 20.3 kg of rapidly decomposable MSW. Assume the density of methane is 0.7177 kg/m3. Note:Hand written solution should not be used.
Treatment plant with capacity 50*106 l/day. This treatment plant required 20 mg/l alum. If the water alkalinity as CaCO3 is 6 mg/l. Find the yearly alum quantity and the quantity of CaO which is used as coagulant aid? Atomic weights: Al=27, O=16, H=1, C=12, Ca=40
An effluent stream sample (500 mL) from a metal-working facility contains 0.52 g nickel sulphate. (i) What is the nickel concentration of this effluent stream (in mg/L)? (ii) Would you regard this concentration as suitable for discharge to the local sewage system? (iii) How much total nickel (in kg) leaves the facility per year in this stream if ~1 ML of effluent is produced?
Calculate the total air required to oxidize 200g of solid waste if the chemical composition = C12H32O8
Calculate the ultimate BOD of a waste that has a measured BOD5 of 24.6 mg·L-1, assuming a BOD rate coefficient (k) of 0.13 day-1.
A certain city has a solid waste generation rate of 0.59 kg/capita-day. Supposed that the bulk density of the MSW is 530 kg/m3, find the volume in m3 of the MSW generated by 1,000 people per year.
The landfill volume required for dry solid waste generated by a food factory per year is 300 m3. After drying the wet solid waste from the factory X% of it is recycled, followed by 2.5X% diversion for composting and 400 m3 for incineration, before the remainder is sent to the landfill. Using the information given below: Density of dry solid waste = 460 kg/m3 Daily generation of wet solid waste = 2200 kg Moisture content of the wet solid waste = 32% (ii) Determine X% and estimate the dimensions of the landfill site if the length: width : depth = 6:5:4
(b) In the town of Abesim, it is determined that the per capita waste generation rate is 1.4 kg (3.1 lb) per person per day. The collection is conducted once per week by the municipality. If the density of MSW in a typical trash container is 150 kg/m³, how many 120 L (30 gal) containers would be needed for a family of four? (c) From (b), collection trucks have a capacity of 11.5 m³(15 yd³), which can compact the waste to a density of 420 kg/m³. How many customers can a truck handle in a single run, before departing for the transfer station?

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	% by weight	Moisture content (%)
Paper (assume dry mass all cellulose, C₆H₁₀O₅)	40	8%
Glass	10	-
Steel	10	-
Aluminum	10	-
Food waste (assume dry mass all sugar, C₆H₁₂O₆)	30	80%