Scientists use nanotechnology to prevent oil spill disaster



Since 2010’s tragic events, which saw BP’s Deepwater Horizon disaster desecrate the Gulf of Mexico, oil safety has been on the forefront of the environmental debate and media outrage. 

In line with the mounting concerns continuing to pique public attention, at the end of this month, Hollywood will release its own biopic of the event. As can be expected, more questions will be raised about what exactly went wrong, in addition to fresh criticism aimed at the entire industry.

One question that is likely to emerge is how do we prevent such a calamity from ever happening again? Fortunately, some of the brightest minds in science have been preparing for such an answer.

One team that has been focusing on this dilemma is Alberta-based, multi-disciplinary research initiative Ingenuity Lab. The institution has just secured $1.7m in project funding for developing a highly advanced system for recovering oil from oil spills. This injection of capital will enable Ingenuity Lab to conduct new research and develop commercial production processes for recovering heavy oil spills in marine environments. 


The technology is centred on cutting edge nanowire-based stimuli-responsive membranes and devices that are capable for recovering oil.

Oil is a common pollutant in our oceans; more than three million metric tonnes contaminate the sea each year. When crude oil is accidentally released into a body of water by an oil tanker, refinery, storage facility, underwater pipeline or offshore oil-drilling rig, it is an environmental emergency of the most urgent kind.

Depending on the location, oil spills can be highly hazardous, as well as environmentally destructive. Consequently, a timely clean up is absolutely crucial in order to protect the integrity of the water, the shoreline and the numerous creatures that depend on these habitats.

Due to increased scrutiny of the oil industry with regard to its unseemly environmental track record, attention must be focused on the development of new materials and technologies for removing organic contaminants from waterways. Simply put, existing methods are not sufficiently robust.

Fortuitously, however, nanotechnology has opened the door for the development of sophisticated new tools that use specifically designed materials with properties that are ideally suited to enable complex separations, including the separation of crude oil from water.

Ingenuity Lab’s project focuses on the efficient recovery of oil through the development of this novel technology using a variety of stimuli-responsive nanomaterials. 

When the time comes for scale up production for this technology, Ingenuity Lab will work closely with industry trendsetters, Tortech Nanofibers.

Source: Ingenuity Lab

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Researchers discover solar energy-driven process makes tailings ponds reclamation instant


Alberta Oil Sands Reclaim tails_MohamedCleaning up oil sands tailings has just gotten a lot greener thanks to a novel technique developed by University of Alberta civil engineering professors that uses solar energy to accelerate tailings pond reclamation efforts by industry.

Instead of using UV lamps as a light source to treat oil sands process affected water (OSPW) retained in tailings ponds, professors Mohamed Gamal El-Din and James Bolton have found that using the sunlight as a renewable energy source treats the wastewater just as efficiently but at a much lower cost.

“We know it works, so now the challenge is to transfer it into the field,” says Gamal El-Din, who also worked on the project with graduate students Zengquan Shu, Chao Li, post doctorate fellow Arvinder Singh and biological sciences professor Miodrag Belosevic.

“This alternative process not only addresses the need for managing these tailings ponds, but it may further be applied to treat municipal wastewater as well. Being a solar-driven process, the cost would be minimal compared to what’s being used in the field now.”

Oilsands tailings ponds contain a mixture of suspended solids, salts, and other dissolvable compounds like benzene, acids, and hydrocarbons. Typically, these tailings ponds take 20 plus years before they can be reclaimed. The solar UV/chlorine treatment process when applied to the tailings ponds would make OSPW decontamination and detoxification immediate.

The sun’s energy will partially remove these organic contaminants due to the direct sunlight. But, when the sunlight reacts with the chlorine (or bleach) added to the wastewater, it produces hydroxyl radicals (powerful oxidative reagents) that remove the remaining toxins more efficiently. The chlorine leaves no residuals as the sunlight causes it to decompose.

In laboratory-scale tests the solar UV/chlorine treatment process was found to remove 75 to 84 per cent of these toxins.

“With this solar process, right now, the wastewater on the top of the tailings ponds is being treated. But because we have nothing in place at the moment to circulate the water, the process isn’t being applied to the rest of the pond,” says Gamal El-Din.

“Because we are limited by the sunlight’s penetration of the water, we now must come up with an innovative design for a mixing system like rafts floating on the ponds that would circulate the water. Installing this would still be much more cost effective for companies. It is expected that the UV/chlorine process will treat the OSPW to the point that the effluent can be fed to a municipal wastewater treatment plant, which will then complete the purification process sufficiently so the water can be discharged safely into rivers.

“This process has been gaining a lot of attention from the oil sands industry. We’re now seeking funds for a pilot-pant demonstration and are looking at commercializing the technology.”

Their findings were published in the Environmental Science & Technology journal.

This research was funded by Trojan Technologies, NSERC Collaborative Research and Development (CRD) grant, Alberta Innovates-Energy and Environment Solutions, and Helmholtz-Alberta Initiative (HAI).