2. [landfills, reduction of GWP emissions] A paper mill landfills 50 metric tonnes per day of solid waste composed primarily of sludge/solids from wastewater treatment plant, ash, and other miscellaneous waste typical of a kraft mill. The mill generates solid waste for 350 days a year. The landfill has been in use for 20 years and remains active. The decay of the solid waste in the landfill produces a biogas rich in methane. The amount of methane generated can be estimated by using the simplified first order decay equation given in the supplementary information. a) The landfill does not have a collection and recovery system for the biogas and the methane is released to the atmosphere. Calculate the amount of greenhouse gases emitted to the atmosphere due to the methane release from the landfill. Use the most recent GWP value for methane (IPCC AR5 value) in your calculations and answer in tonnes of CO2 equivalents per year, t CO₂e/y. [Ans: = 15,780 t CO₂e/y]
Thermochemistry
Thermochemistry can be considered as a branch of thermodynamics that deals with the connections between warmth, work, and various types of energy, formed because of different synthetic and actual cycles. Thermochemistry describes the energy changes that occur as a result of reactions or chemical changes in a substance.
Exergonic Reaction
The term exergonic is derived from the Greek word in which ‘ergon’ means work and exergonic means ‘work outside’. Exergonic reactions releases work energy. Exergonic reactions are different from exothermic reactions, the one that releases only heat energy during the course of the reaction. So, exothermic reaction is one type of exergonic reaction. Exergonic reaction releases work energy in different forms like heat, light or sound. For example, a glow stick releases light making that an exergonic reaction and not an exothermic reaction since no heat is released. Even endothermic reactions at very high temperature are exergonic.
for part a) can someone show how we get from 35265405 moles to 564.24tonne/year
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