Waste

Waste is a Scope 3 Emission that accounts for garbage or refuse, sludge from a wastewater treatment plant, water supply treatment plant, or air pollution control facility and other discarded material, resulting from industrial, commercial, mining, and agricultural operations, and from community activities.

Usage

class atomic6ghg.formulas.waste.Waste(wks_data=None)

Calculate emissions from waste materials

static calculate_co2_emissions(waste_material, disposal_method, weight, unit)

Calculate CO2 emissions for a waste material given the disposal method weight and units

disposal_methods = ['recycled', 'landfilled', 'combusted', 'composted', 'anaerobicallyDigestedDry', 'anaerobicallyDigestedWet']
make_co2_equivalent_emissions()

Calculate co2 equivalent emissions

make_total_emissions_by_disposal_method()

Calculate CO2 equivalent emissions for each input row

make_waste_disposal()

Calculate CO2 equivalent emissions for each input row

recalc(wks_data: dict) → dict

Execute recalc procedure for Waste

to_dict()

API to expose _output

to_json()

API to expose _output as JSON

Python example code usage:

from atomic6ghg.formulas import Waste
waste_input: dict = {
    "version": "waste.1.0.0",
    "wasteDisposal": [
        {
            "sourceId": "",
            "sourceDescription": "",
            "wasteMaterial": "aluminumCans",
            "disposalMethod": "recycled",
            "weight": 800,
            "unit": "pounds"
        }
    ]
}
engine = Waste(waste_input)
outputs: dict = engine.to_dict()
print(outputs.get('totalCO2EquivalentEmissions'))

EPA Equation Analysis

The fundamental calculation for Waste is the \(\text{CO}_2\; Equivalent\; Emissions\) produced by the disposal of waste materials based on the \(Disposal\; Method\) and \(weight\).

Waste allows for inputs of waste materials for the calculation over the following disposal methods and units:

Waste Material

Disposal Method

Units

Aluminum Cans

Recycled, Landfilled, Combusted

Gram (g), Kilogram (kg), Metric Ton, Pounds (lb), Short Ton

Aluminum Ingot

Recycled, Landfilled, Combusted

Gram (g), Kilogram (kg), Metric Ton, Pounds (lb), Short Ton

Steel Cans

Recycled, Landfilled, Combusted

Gram (g), Kilogram (kg), Metric Ton, Pounds (lb), Short Ton

Copper Wire

Recycled, Landfilled, Combusted

Gram (g), Kilogram (kg), Metric Ton, Pounds (lb), Short Ton

Glass

Recycled, Landfilled, Combusted

Gram (g), Kilogram (kg), Metric Ton, Pounds (lb), Short Ton

HDPE

Recycled, Landfilled, Combusted

Gram (g), Kilogram (kg), Metric Ton, Pounds (lb), Short Ton

LDPE

Landfilled, Combusted

Gram (g), Kilogram (kg), Metric Ton, Pounds (lb), Short Ton

PET

Recycled, Landfilled, Combusted

Gram (g), Kilogram (kg), Metric Ton, Pounds (lb), Short Ton

LLDPE

Landfilled, Combusted

Gram (g), Kilogram (kg), Metric Ton, Pounds (lb), Short Ton

PP

Landfilled, Combusted

Gram (g), Kilogram (kg), Metric Ton, Pounds (lb), Short Ton

PS

Landfilled, Combusted

Gram (g), Kilogram (kg), Metric Ton, Pounds (lb), Short Ton

PVC

Landfilled, Combusted

Gram (g), Kilogram (kg), Metric Ton, Pounds (lb), Short Ton

PLA

Landfilled, Combusted, Composted

Gram (g), Kilogram (kg), Metric Ton, Pounds (lb), Short Ton

Corrugated Containers

Recycled, Landfilled, Combusted

Gram (g), Kilogram (kg), Metric Ton, Pounds (lb), Short Ton

Magazines and Third Class Mail

Recycled, Landfilled, Combusted

Gram (g), Kilogram (kg), Metric Ton, Pounds (lb), Short Ton

Newspaper

Recycled, Landfilled, Combusted

Gram (g), Kilogram (kg), Metric Ton, Pounds (lb), Short Ton

Office Paper

Recycled, Landfilled, Combusted

Gram (g), Kilogram (kg), Metric Ton, Pounds (lb), Short Ton

Phonebooks

Recycled, Landfilled, Combusted

Gram (g), Kilogram (kg), Metric Ton, Pounds (lb), Short Ton

Textbooks

Recycled, Landfilled, Combusted

Gram (g), Kilogram (kg), Metric Ton, Pounds (lb), Short Ton

Dimensional Lumber

Recycled, Landfilled, Combusted

Gram (g), Kilogram (kg), Metric Ton, Pounds (lb), Short Ton

Medium Density Fiberboard

Recycled, Landfilled, Combusted

Gram (g), Kilogram (kg), Metric Ton, Pounds (lb), Short Ton

Food Waste Non Meat

Landfilled, Combusted, Composted, Anaerobically Digested (Dry Digestate with Curing), Anaerobically Digested (Wet Digestate with Curing)

Gram (g), Kilogram (kg), Metric Ton, Pounds (lb), Short Ton

Food Waste Meat Only

Landfilled, Combusted, Anaerobically Digested (Dry Digestate with Curing), Anaerobically Digested (Wet Digestate with Curing)

Gram (g), Kilogram (kg), Metric Ton, Pounds (lb), Short Ton

Beef

Landfilled, Combusted, Composted, Anaerobically Digested (Dry Digestate with Curing), Anaerobically Digested (Wet Digestate with Curing)

Gram (g), Kilogram (kg), Metric Ton, Pounds (lb), Short Ton

Poultry

Landfilled, Combusted, Composted, Anaerobically Digested (Dry Digestate with Curing), Anaerobically Digested (Wet Digestate with Curing)

Gram (g), Kilogram (kg), Metric Ton, Pounds (lb), Short Ton

Grains

Landfilled, Combusted, Composted, Anaerobically Digested (Dry Digestate with Curing), Anaerobically Digested (Wet Digestate with Curing)

Gram (g), Kilogram (kg), Metric Ton, Pounds (lb), Short Ton

Bread

Landfilled, Combusted, Composted, Anaerobically Digested (Dry Digestate with Curing), Anaerobically Digested (Wet Digestate with Curing)

Gram (g), Kilogram (kg), Metric Ton, Pounds (lb), Short Ton

Fruits and Vegetables

Landfilled, Combusted, Composted, Anaerobically Digested (Dry Digestate with Curing), Anaerobically Digested (Wet Digestate with Curing)

Gram (g), Kilogram (kg), Metric Ton, Pounds (lb), Short Ton

Dairy Products

Landfilled, Combusted, Composted, Anaerobically Digested (Dry Digestate with Curing), Anaerobically Digested (Wet Digestate with Curing)

Gram (g), Kilogram (kg), Metric Ton, Pounds (lb), Short Ton

Yard Trimmings

Landfilled, Combusted, Composted, Anaerobically Digested (Dry Digestate with Curing)

Gram (g), Kilogram (kg), Metric Ton, Pounds (lb), Short Ton

Grass

Landfilled, Combusted, Composted, Anaerobically Digested (Dry Digestate with Curing)

Gram (g), Kilogram (kg), Metric Ton, Pounds (lb), Short Ton

Leaves

Landfilled, Combusted, Composted, Anaerobically Digested (Dry Digestate with Curing)

Gram (g), Kilogram (kg), Metric Ton, Pounds (lb), Short Ton

Branches

Landfilled, Combusted, Composted, Anaerobically Digested (Dry Digestate with Curing)

Gram (g), Kilogram (kg), Metric Ton, Pounds (lb), Short Ton

Mixed Paper General

Recycled, Landfilled, Combusted

Gram (g), Kilogram (kg), Metric Ton, Pounds (lb), Short Ton

Mixed Paper Primarily Residential

Recycled, Landfilled, Combusted

Gram (g), Kilogram (kg), Metric Ton, Pounds (lb), Short Ton

Mixed Paper Primarily from Offices

Recycled, Landfilled, Combusted

Gram (g), Kilogram (kg), Metric Ton, Pounds (lb), Short Ton

Mixed Metals

Recycled, Landfilled, Combusted

Gram (g), Kilogram (kg), Metric Ton, Pounds (lb), Short Ton

Mixed Plastics

Recycled, Landfilled, Combusted

Gram (g), Kilogram (kg), Metric Ton, Pounds (lb), Short Ton

Mixed Recyclables

Recycled, Landfilled, Combusted

Gram (g), Kilogram (kg), Metric Ton, Pounds (lb), Short Ton

Food Waste

Landfilled, Combusted, Composted

Gram (g), Kilogram (kg), Metric Ton, Pounds (lb), Short Ton

Mixed Organics

Landfilled, Combusted, Composted

Gram (g), Kilogram (kg), Metric Ton, Pounds (lb), Short Ton

Mixed MSW Municipal Solid Waste

Landfilled, Combusted

Gram (g), Kilogram (kg), Metric Ton, Pounds (lb), Short Ton

Carpet

Landfilled, Combusted

Gram (g), Kilogram (kg), Metric Ton, Pounds (lb), Short Ton

Desktop CPUs

Landfilled, Combusted

Gram (g), Kilogram (kg), Metric Ton, Pounds (lb), Short Ton

Portable Electronic Devices

Landfilled, Combusted

Gram (g), Kilogram (kg), Metric Ton, Pounds (lb), Short Ton

Flat Pannel Displays

Landfilled, Combusted

Gram (g), Kilogram (kg), Metric Ton, Pounds (lb), Short Ton

CRT Displays

Landfilled, Combusted

Gram (g), Kilogram (kg), Metric Ton, Pounds (lb), Short Ton

Electronic Peripherals

Landfilled, Combusted

Gram (g), Kilogram (kg), Metric Ton, Pounds (lb), Short Ton

Hard Copy Devices

Landfilled, Combusted

Gram (g), Kilogram (kg), Metric Ton, Pounds (lb), Short Ton

Mixed Electronics

Landfilled, Combusted

Gram (g), Kilogram (kg), Metric Ton, Pounds (lb), Short Ton

Clay Bricks

Landfilled

Gram (g), Kilogram (kg), Metric Ton, Pounds (lb), Short Ton

Concrete

Recycled, Landfilled

Gram (g), Kilogram (kg), Metric Ton, Pounds (lb), Short Ton

Fly Ash

Recycled, Landfilled

Gram (g), Kilogram (kg), Metric Ton, Pounds (lb), Short Ton

Tires

Recycled, Landfilled, Combusted

Gram (g), Kilogram (kg), Metric Ton, Pounds (lb), Short Ton

Asphalt Concerte

Recycled, Landfilled

Gram (g), Kilogram (kg), Metric Ton, Pounds (lb), Short Ton

Asphalt Shingles

Recycled, Landfilled, Combusted

Gram (g), Kilogram (kg), Metric Ton, Pounds (lb), Short Ton

Drywall

Landfilled

Gram (g), Kilogram (kg), Metric Ton, Pounds (lb), Short Ton

Fiberglass Insulation

Recycled, Landfilled

Gram (g), Kilogram (kg), Metric Ton, Pounds (lb), Short Ton

Vinyl Flooring

Landfilled, Combusted

Gram (g), Kilogram (kg), Metric Ton, Pounds (lb), Short Ton

Wood Flooring

Landfilled, Combusted

Gram (g), Kilogram (kg), Metric Ton, Pounds (lb), Short Ton

The formula for \(\text{CO}_2\; Equivalent\; Emissions\) is:

\[\text{CO}_2\; Equivalent\; Emissions_{material, method} = Emission\; Factor_{material, method} \cdot Weight_{material}\]

This equation is derived from Equation 3.2 from [IPCC2006_V5CH3].

where \(material\) is the waste material, \(method\) is the disposal method, \(Emission\; Factor_{material, method}\) is the emission factor for that \(material\) and \(method\), and \(Weight_{material}\) is the weight, mass, or amount of the \(material\) that has been disposed via \(method\) during that reporting period. Note that in atomic6, the calculations are done directly to \(\text{CO}_2\) by using the IPCC’s AR4 GWP values as a conversion factor to convert waste emission factors to \(\text{CO}_2\;\), while in the reference material the calculations are done directly to \(\text{CH}_4\). The input units are converted to a standard unit of short tons, and the short tons are converted into kilograms.

For waste, the \(\text{CO}_2\; Equivalent\; Emissions_{method}\) in metric tons is calculated. The formula is:

\[\text{CO}_2\; Equivalent\; Emissions_{method} = \sum_{n=1}^{\infty} Total\; Emissions_{method}\]

This equation is derived from [IPCC2006_V5CH3].

where \(Total\; Emissions_{method}\) is the sum of all the \(\text{CO}_2\;\) emissions for that \(method\) (recycled, landfilled, combusted, composted, anaerobically digested (dry digestate with curing), or anaerobically digested (wet digestate with curing)). Note that in atomic6 the final value of this calculation is converted into \(metric\; tons\).

IPCC2006_V5CH3(1,2)

IPCC, 2006: 2006 IPCC Guidelines for National Greenhouse Gas Inventories, Volume 5, IPPU, Chapter 3, Solid Waste Disposal, pp. 9