Introducing a Sulfur Selective Media

Biocarb Ox

Biocarb Ox. Description

• Combines a premium quality wood-based activated carbon in conjunction with a proprietary blend of catalytically active inorganic phases.

• Extraordinarily high H2S removal capacity which out performs any other control media on the market today (80 kg H2S/100 kg media) .

• Performs very well against other acidic gases such as sulphur dioxide (SO2) and hydrogen chloride (HCl).

• Shows a remarkable efficiency at adsorbing some VOCs that may be present in the gas stream.

Biocarb Ox. H2S Abatement Mechanism

• H2S is catalytically oxidized to elemental sulphur (S) in the active sites of metal oxides.

• Sulphur migrates and builds up in the micropores of the activated carbon phase.

• Metal oxides are available again to oxidize new H2S molecules.

In addition…

• Biocarb Ox does not convert H2S to sulphuric acid (H2SO4), which may lead to equipment corrosion problems.

Biocarb Ox. H2S Abatement Mechanism

Biocarb Ox. Determination of H2S Absorption Capacity

Inlet air stream: 1450 cm3/min

85% RH

1% (v/v) H2S

= 2.54 cm

h =

22.

9 c

m

Breakthrough @ 50 ppmv H2S

(99.5% efficiency)ASTM D6646 - 03(2008)

Standard Test Method for Determination of the Accelerated Hydrogen Sulfide Breakthrough Capacity of Granular and Pelletized Activated Carbon

Biocarb Ox. Benchmarking

0

25

50

75

100

% H

2S lo

ad

ing

(w

t/w

t)

Accelerated H2S breakthrough capacity

Purafil Odorcarb ™ Ultra US Filter Midas ® OCM

Jacobi Addsorb ® Sulfox-HC Biocarb Ox

Biocarb Ox. Advantages

• Low pressure drop to gas flows, due to the nominal pellet diameter (4 mm).

• Efficient on variable inlet conditions. Copes well with spike concentrations of H2S into the hundreds of ppm.

• Does not need to undergo long term conditioning prior to being put into operation.

• In contrast to impregnated carbons, the exceptionally high sulphur loading is not affected even in the presence of high CO2 levels.

Biocarb Ox. Advantages

• Spent media is considered a non-hazardous waste and thus may be taken to the local landfill.

• Safe to handle and use. It does not require frequent change outs or time consuming regenerating processes.

• The unusually high ignition temperature (420 ºC) minimizes the risk of bed fire.

Biocarb Ox. Applications

• Wastewater treatment plants

• Refineries

• Sewage plants

• Pulp and paper mills

• Pumping stations

• Sludge holding tanks

• Composting facilities

Biocarb Ox. Field Study at a WWTP - Barcelona

Biocarb Ox. Field Study at a WWTP - Barcelona

Biocarb Ox. Field Study at a WWTP - Cambrils

Property Fresh media Spent media

Water content 18.5% 16.5%

H2S removal capacity (> 99.5% efficiency)

81.5%, weight basis 0%, weight basis

Density 460 – 500 kg/m3 820 – 880 kg/m3

Sulfur content 0% 80%, with respect to fresh sample weight

Biocarb Ox. Field Study at a WWTP - Cambrils

N2

CO2

DMDSToluene

Thermal desorption of spent Biocarb Ox – GC/MS analysis

Av. Diagonal 474, 6º-3º. Esc. A

08006, Barcelona. España

Tel.  +34 93 237 13 62

Fax.  +34 93 380 76 02 E-mail: [email protected]