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Core Adsorbent plant with molecular sieve and activated alumina products

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Adsorbents for Environment & Water Treatment

Core Adsorbent supplies hydrophobic zeolite for VOC abatement and solvent recovery, and activated alumina for removing fluoride and arsenic from drinking water.

< 1.5 mg/L

WHO fluoride guideline

10 µg/L

WHO arsenic guideline

Non-flammable

Zeolite for VOCs

15–35 days

Delivery time

01 Overview

Which adsorbents are used for emission control and water treatment?

Hydrophobic zeolite captures VOCs from humid exhaust air and, unlike activated carbon, does not burn at desorption temperatures. Activated alumina removes fluoride and arsenic from drinking water and can be regenerated for repeated use.

02 Product solutions

Adsorbent solutions for environment and water

Every solution page tagged to this application appears here automatically.

Solution pages for this application are being added. Ask our engineers about your process.

03 Challenges

What makes VOC and water treatment difficult?

Four problems that drive the choice of adsorbent.

Spray booth exhaust

Humid exhaust

Activated carbon loses capacity in humid air.

Fire-damaged carbon bed

Fire risk

Carbon beds can ignite at desorption temperatures.

Exhaust ductwork

Dilute VOCs

Large, low-concentration flows are costly to oxidise directly.

Village well

Fluoride and arsenic

Groundwater in many regions exceeds WHO guidelines.

04 How it works

A zeolite VOC concentrator rotor

Zeolite VOC concentrator rotor with adsorption, desorption and cooling zones

180–220 °C

Typical desorption air in rotors

Non-flammable

Inorganic zeolite

< 1.5 mg/L

WHO fluoride guideline

10 µg/L

WHO arsenic guideline

WHO values from the WHO Guidelines for Drinking-water Quality; other values typical for the industry.

05 Selection guide

Environmental adsorbent selection table

Full specifications are on each product page.

ProductUseKey figure
VOC Adsorption ZeoliteVOC concentrators, fixed beds, solvent recovery≈ 0.55 nm pores, hydrophobic
Activated Alumina for Fluoride RemovalDrinking-water defluoridationRegenerable
Activated Alumina for Arsenic RemovalArsenic removal from well waterRegenerable

07 Case studies

Proven in plants like yours

Cases tagged to this application appear here automatically.

Case studies for this application will be published here.

08 From our plant

What you receive

The adsorbent, the packing and the plant it ships from.

Activated alumina balls, close-up
Molecular sieve packed in steel drums
Adsorbent packed in jumbo bags
Adsorbent forming line at the Core Adsorbent plant
Container loading of adsorbent for export

09 FAQ

Environment & water FAQ

Can’t find your answer? Ask our sales engineer.

Why use zeolite instead of activated carbon for VOCs?

Hydrophobic zeolite keeps adsorbing in humid air and is non-flammable at desorption temperatures.

How low can activated alumina bring fluoride?

Properly sized beds bring fluoride below the WHO guideline of 1.5 mg/L.

Can the alumina be regenerated?

Yes, with dilute caustic and acid washes, then returned to service.

Which VOCs does the zeolite adsorb?

Benzene, toluene, acetone and VOCs of similar size.