Fully characterised performance for the following:
Visit FAQs to see typical efficiencies

copper

cadmium

zinc

chromium

lead

arsenic

aluminium

nickel

mercury

tin

uranium

cobalt

2,4 D

MCPA, MCPB

Dichloroprop

RDX, TNT

Diesel range organics

Petroleum range organics

Naphthalene

Benzene, toluene, ethylbenzene and xylenes

TCE, TCA, PCE, DDCE

Carbon tetrachloride, chloroform

How it Works

Pollutants vary greatly in their physicochemical forms. However, water solubility and hydrophobicity (the extent of water repellence) are key factors in defining their association with water. DRAM has a range of modes of actions depending upon the nature of the pollutant.

In the case of inorganic pollutants, DRAM achieves remediation success by sorbing the chemical into the matrix. With an almost inexhaustible surface area, DRAM encapsulates the target chemical causing it to strongly sorb to the matrix and thus leaving the solution. This means that by assessing the relative pollutant dose and its flux, the DRAM can be deployed in a bespoke way to match individual scenarios. Full characterisation against a wide range of pollutants means that the team full understand the relative binding of different chemicals.

For degradable organic pollutants these also become bound to the DRAM matrix. But here they become prone to attack by microbial degraders within the DRAM. Research has shown that DRAM hosts a diverse and large population of organisms capable of the degradation of aromatic and aliphatic hydrocarbons, chlorinated solvents and pesticides. Furthermore sparingly soluble compounds such as large PAHs and PCBs are also effectively degraded. This is because the voids within DRAM are ideal habitats for a microbial ecosystem capable of utilising a diverse range of organic substrates. Most significantly, DRAM not only captures these organic molecules but it is able to completely mineralise them rendering the end products of carbon dioxide and water. The deployment of DRAM for such applications can be for very long term operations as the degrading pollutants will self sustain the process.

DRAM is also applicable to mixed contaminant sources where there are both organic and inorganic pollutants present. Although inorganic pollutants may dramatically inhibit the performance of biodegradation this has not been observed. This is because DRAM offers a protective environment to the degrading community and although fractions may be compromised the bulk of the matrix is able to continue actively functioning.

 

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