“Waste to energy”

Horst UnterlechnerAugust 2016

Who is ibert ?

Otto HagerEnergy Economist

Horst UnterlechnerBiomass energy specialist

Pilot site M2MAbattoir, Jan Kempdorp1st waste to energy project 2012

In South Africa

6 Biogas plants•3 x abattoir•2 piggery•1 energy crops

Biogas Express Reactor Technology

Waste to energy process

Biogas (wet waste)Biomass (Dry waste)

What is bio-gas ?

“Product” of natural process of decomposing of organic material in the

absence of O2

Biological process that convers carbohydrates, fats, proteins into

methane CH4 and CO2 via Anaerobic Digestion (AD)

Waste streams (Biogas liter/kg ODM)

Manure

Grasses Fruit & veg Waste

Methane “production” steps

Biogas process/ cycle from source to use

Typical Biogas Plant

Standard foot print

ibert foot print

Anaerobic Digestion- biogas with TGL

Ibert USP • Process organic & non-organic waste• Small waste quantities from 5tons/day, on-site • Plant has small footprint (25 / 30 m)

• Production of biogas• Modular integrated system• Output from >12 kW(el) >20 kW(therm) • Imbedded self-usage less then 8% of total power

production• Utilization of “waste product”

Reference sites South AfricaPlant #1 Meat to Market Jan Kempdorp

600m3 AD, 135 kW CHP, 15 – 20 t/day slaughter waste

Plant #2 Hessequa Abattoir - Riverdale

400m3 AD, 50 kW CHP, 10 t/day slaughter waste

Plant #3 No2 Piggeries – Peninsula - Queenstown

600m3 AD, 190 kW CHP, 35 t/day pig manure

Plant #4 &5 Cavalier Abattoir - Cullinan

2 x 500m3 AD, 135 kW + 360 kW CHP, 15 – 40 t/day slaughter waste

Standard CHP size: 135 kW

Plant #6 Zandam Cheese & Piggery (W/Cape)

1 x 500m3 AD, 75 kW CHP, 30 t/day pig manureMin. load 78 kW

Plant #7 Sucro Power (KZN/Durban)

1 x 200m3 AD, 16kW CHP, 30 t/day Napier Gras

Project realisation - Next steps• Conduct a on-site ‘waste to energy audit”• Qualify & Quantify ‘WTE” potential and best

technology to be used• Develop a pre-feasibility report of current energy

usage cost and risks• Present go / no-go and preferred business model• Conclude contracts • Start process• Design, build, commission• Operate via M&OM agreement

Thank you!