adsorbent Harena
Oil Tank Supplies have released Harena, a new oil adsorbent, for clean-up in workshops and garages.

adsorbent HarenaOil Tank Supplies (OTS) has launched Harena, a unique fine grade Oleophilic-coated fuel and oil adsorbent. This new spill product rapidly adsorbs or bonds with hydrocarbons that occur naturally in fuels and oils, isolating them from the surrounding environment. Harena will bond to all hydrocarbon types including man-made synthetics, as well as fuels such as petrol and diesel, including any present vapours. It is also fully hydrophobic and thus will actively and consistently repel water. This enables effective use in all weather conditions and environments.

Once fully bonded, Harena has the ability to significantly reduce the flammability of high volatile hydrocarbons such as fuels, thereby facilitating the complete removal of the spilt material from site whilst minimising the risk of secondary accidents. Furthermore, used Harena is environmentally friendly; once fully bonded, Harena will form a dry oil-free crumb and due to its non-leaching properties, it can be removed quickly, cleanly and efficiently.

Harena is easy to store, including outside (weatherproof bags), and can be quickly applied as a dry, free flowing product. It is non-flammable, safe to handle and non-toxic, with an indefinite shelf life.

Harena’s broad properties enable its use for a variety of different purposes and across a number of different industries. We’ve listed some of these here:

Contamination prevention

Harena can be used as a contamination prevention layer underneath and potentially around tanks and pipework when a leak or spillage initially occurs. Its highly Oleophilic nature means that leaked hydrocarbons will migrate along a Harena layer rather than straight through the sub-layer.

Fuel and oil spillage

Harena is a perfect tool for dealing with ground and waterborne spillage. Harena will adsorb from a variety of ground surfaces including semi-porous surfaces such as concrete and asphalt and provide a complete clean without residue or staining (as pictured below).

adsorbent Harena
Left: A spill with Harena applied. Right: The commpleted oil spill clean-up.


Harena can increase fire safety and reduce risk when utilised as a spill clean-up method for small everyday customer spills and filling overflows as well as any larger scale spillage. Harena is an ideal replacement for sand in forecourt fire buckets.


Harena has multiple uses within the transport sector, including for highway construction and maintenance, as it will bond with even highly viscous hydrocarbons such as bitumen. Harena can also significantly improve site safety at road accidents as well as at airport hangers and aircraft maintenance depots. The rapid adsorption of fuels and oils will minimise the risk of environmental damage, slip hazards and fire.

For logistics, Harena can be utilised by businesses that operate large vehicle fleets as a precautionary measure for spillage. This could at the fuel filling depot and/or carried as part of a spill kit on fleet vehicles.

Waterborne & wet environment spillage

Harena is a target specific method for hydrocarbons, enabling it to be an effective solution in wet environments and waterborne spillages. Harena will only target hydrocarbon spillage, completely isolating it from the surrounding body of water. Hydrocarbons remain completely isolated and will not leach.

Land remediation

Harena has a beneficial use for remediation within contaminated soils and sediments. Fuels and oils that are mixed with soils are often difficult and costly to remove effectively. Harena can be mixed with these sediments and will isolate the contamination effectively. The non-leaching ability of Harena means these contaminates will remain captured and can be left to breakdown utilising natural bacteria within the sediments. Additional live bacteria can be added to quicken the process if required.

Disposal after use

Landfill-used Harena has waste acceptance criteria tested (WAC) in the UK to be classified as non-reactive hazardous waste in non-hazardous BS EN 12457. Classification may reduce the cost of disposal compared with traditional absorbents.

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This article originally appeared on page 96 of FACTS 130, as below. To read the magazine in its entirety: