The Top 10 filtration business stories of 2021

Columbus Industries, Evonik, Filtration Group, Glanris, Grundfos, Lanxess, Lydall, Mann+Hummel, Nordic Water, Pentair, Pleatco, Suez, Sulzer, Tiger Filtration, Unifrax and Xebec Adsorption feature in the 10 most-read business news stories on the Filtration+Separation website during 2021.

Image: bht2000/Adobe Stock.

1. Unifrax to acquire Lydall in US$1.3 billion deal

High-performance materials provider Unifrax signs definitive agreements to acquire Lydall Inc, the specialty filtration materials and advanced material solutions company.


2. Filtration Group acquires Columbus Industries

Filtration Group buys Columbus Industries, a global provider of air filtration products for indoor residential and commercial applications.


3. Evonik supplies green membranes to biogas plant

Germany's largest biogas plant for bio-LNG production, operated by EnviTec Biogas, is using Evonik’s SEPURAN Green membrane technology for its biogas upgrading.


4. Pentair to acquire Pleatco Filtration

Pentair plc enters into a definitive agreement to acquire Pleatco, a US manufacturer of water filtration and clean air technologies for pool, spa and industrial air applications, in a US$255 million cash transaction.


5. Xebec Adsorption acquires UK’s Tiger Filtration

Canadian clean energy solutions provider Xebec Adsorption Inc buys Tiger Filtration (TFL), a UK-based manufacturer of alternative filter elements, housings and bespoke filtration solutions for the compressed air and gas industry.

Tiger Filtration's facility in Sunderland, UK. -

6. Suez finalises acquisition of Lanxess’s membrane business

Suez completes the purchase of the reverse osmosis (RO) membrane product line from specialty chemical company Lanxess.


7. Glanris raises US$2mn to produce filtration media from rice hulls

Glanris raises a US$2 million Series A round from investors Riceland, Pittco Capital, Innova and Sage for what it says is the world’s first green, hybrid water filtration media.

Glanris media (raw husks and processed). -

8. Sulzer to buy Sweden’s Nordic Water

Sulzer AG signs a binding agreement to acquire Swedish water treatment technology company Nordic Water in a SEK1.2 deal.


9. Mann+Hummel and Alba Group extend filter roof box partnership

Filtration specialist Mann+Hummel and recycling and environmental services company Alba Group expand their partnership to tackle vehicle emissions.

The PureAir fine dust particle filter roof box from Mann+Hummel. -

10. Grundfos to acquire US water technology company MECO

Grundfos enters into an agreement to acquire Mechanical Equipment Company Inc (MECO), a US group that engineers and manufactures water purification solutions for a range of industries.