Waste 2 Gold Adding value to waste Dealing with organic waste in - - PowerPoint PPT Presentation

Dealing with organic waste in Rotorua

Waste 2 Gold – Adding value to waste

Waste 2 Gold Approach

• Targeting solid organic wastes
• Adding value

Reduce costs Generate income Mitigate impacts

• Energy production and beyond

RDC Project

• Focus on biosolids from the

WWTP

14% of landfill waste Opportunities to

• Reduce transportation costs
• Improve WWTP performance
• Avoid GHG production
• Pilot for landfill opportunity

Staged approach

Paper Kitchen/food Greenwaste Other putrescibles Textiles Nappies and sanitary Timber Biosolids Other potentially hazardous Ferrous material Non ferrous material Glass Rubble Rubber Plastic

Composition of landfill waste

Paper Kitchen/food Greenwaste Other putrescibles Textiles Nappies and sanitary Timber Biosolids

Potential Waste 2 Gold feedstocks

Waste 2 Gold Technology Platform

Biomass Deconstruction High Carbon Solid Wastes Energy Recovery Biodegradable Intermediates Bioconversion Liquid biofuels Biopolymers Bioenergy

100% Oxygen 0%Oxygen Glucose (15g/L) 200°C / 40Bar / 2hrs

“Organic waste”

• meat scraps
• vege scraps
• newspaper

20% O2 200°C/40Bar 2hrs Furfural Acetic acid Acetone Acetaldehyde 2-Methylbutanal

Biosolids deconstruction

• >90% reduction in solids
• Acetic acid generated

Bioconversion Platforms

• Methane generation base case
• Feedstock for industrial biotechnology

platform

Summary

• There is value in waste
• Thermochemical approaches

increasing internationally

• Approach is a step-change in thinking
• Will increase landfill life

Mitigate greenhouse gases

• Staged approach

Biosolids Landfill

• Partnership between RDC and Scion