MónaShell®

“Air Clean offers proven, proprietary clean air bio-technologies, which provide best-in-class process performance with the lowest utility and life cycle costs”

The MónaShell® biofiltration system is a proven and costeffective alternative to chemical scrubbing or carbon adsorption, designed like a Biotrickling system yet incorporating many benefits of traditional biofilters by utilizing up-cycled recovered material generated from the food industry.
The shell-based media is sustainable and renewable with the ability to maintain a neutral pH within the biofilter. This ensures optimal odour treatment performance across a broad range of odor producing compounds, while simplifying operation and
enhancing system reliability.
MónaShell® technology in a single stage configuration was originally designed for odour removal emitted from wastewater treatment plant processes, lift and pump stations, and sludge holding tanks. The introduction of recirculation technology and
double pass treatment allowed to extend its use to high levels of H₂S and VOC including those generated by industrial applications. When it is used in combination with our CrumRubber™ technology it allows to remove up to 4000 ppm H₂S.

MÓNASHELL® TREATMENT AND PRODUCT SELECTION CONSIDERATIONS
Compounds	Concentration Range	Removal Efficiency
Odor	1000 – 40.000.000 OU_E	99.9% +
H₂S	0-2000 ppm (4000 ppm max)	99.9% +
VOC's	0 – 1000 mgC/m³	90 - 95%
Reduced Sulphur Compounds	0 -500 ppm	99%
Amines	0 - 50 ppm	98% +
Ammonia	0 -100 ppm	98%
Typical design contact times	18 to 90 seconds
Water Consumption per kg H₂S	0.4 m³
Typical Media Life	5 years ++
Typical Pressure Drop per m³	50 - 250 pa
Comments on Selection of Technology	This technology was developed for high levels of H₂S and VOC’s
Comments on Life Cycle Cost	Long life cycle costs even for high VOC and H₂S emissions when benchmarked against chemical scrubbers activated carbon and thermal oxidisers

MÓNASHELL® BIOFILTRATION BENEFITS
OVER OTHER BIOFILTERS

Treats high and variable concentrations of H₂S
and a broader range of organic sulphides

Up to 67% footprint reduction compared to conventional biofilters due to higher efficiencies, reduced contact time, and deeper filter bed

No short circuiting or channelling through media

High porosity, low pressure drop, low energy requirement

Lower water consumption:
water recirculation conserves H₂O

No nutrient addition

OVER CARBON AND WET SCRUBBERS

Low pressure drop, low energy costs

Lower media replacement costs

Eliminates need for chemicals

Sustainable process uses naturally occurring recovered media

Effective on highly variable inlet conditions

Lower operating and maintenance costs

OVER RTO

Low energy

Low CO₂ footprint

Able to treat high variable concentration of VOC

Air Clean

Environmental rehabilitation plants

Air treatment
Biogas upgrading

MónaShell®

“Air Clean offers proven, proprietary clean air bio-technologies, which provide best-in-class process performance with the lowest utility and life cycle costs”

Air Clean

Environmental rehabilitation plants

Air treatmentBiogas upgrading

MónaShell®

“Air Clean offers proven, proprietary clean air bio-technologies, which provide best-in-class process performance with the lowest utility and life cycle costs”

Air treatment
Biogas upgrading