Used Oil is a Hazardous Waste

“Heavy metals such as lead, arsenic, cadmium and chromium, chlorinated solvents, poly-nuclear aromatic hydrocarbons (PAH), glycols, and chlorinated solvents as well as potentially containing PCBs” * These physical and chemical impurities are toxic to humans, wildlife, and plants.

Disposal of Used Oil

The worldwide statistics collected by the Kline Group show that 50% of used oil is dumped, 49% is recovered for burning as fuel, while only 1% is recovered. “Dumping” pollutes soil and water; “Burning” pollutes air; and all such disposals are a waste of valuable lube oil.

Burning Oil Causes Air Pollution

The air pollution caused by burning is – “152 million litres of used lubricating oil (the processing capacity of a typical re-refinery plant for one year) produces approximately two metric tonnes of lead, 19 tonnes of hydrochloric acid, 242 kilograms of chromium, 781 tonnes of particulates and greenhouse gases, and more than 300,000 metric tonnes of carbon equivalent.”**

Before MemPore

The only technology in use until now for recovering base oil is vacuum distillation plus hydro-treating. However this technology is also a major pollutant which combusts hydrocarbons with large emissions of GHGs, odors, degradation products, and particulates. Vacuum distillation followed by hydro treating requires 980 BTU/L (equivalent to 287kWh/L).

MemPore’s New Solution

MemPore’s system operates at a moderate 100oC and a low pressure of 100 psi, and uses 84% less energy than vacuum distillation and hydro treating. Furthermore, MemPore’s nano-filtration membrane technology has no gaseous emissions from the membrane process and only minimal CO2 generated by the polishing regeneration thereby reducing GHG emissions by 71%.

Benefits of MemPore’s System

MemPore’s technology makes lubricating oil a renewable resource. With its small footprint, it can be used in close proximity to the waste generators (e.g. garages, machine shops, fleets of vehicles, trains) thereby lowering transportation costs and the dangers of toxic spills. By being localized, MemPore’s plants also reduce the volume of waste that has to be transported to distant vacuum distillation plants.