Lignite Base Carbon

Lignite Base Activated Carbon Overview

Lignite coal, “often referred to as brown coal, is a soft brown combustible sedimentary rock formed from naturally compressed peat.” (Wikipedia) It is used as a base product for the manufacture of granular activated carbon (GAC).  Compared to coal and coconut base carbons, it lighter in weight (lbs. per ft3), lower in iodine number and higher in molasses number.

Choosing Activated Carbon by Application - Lignite

Notes:

• These recommendations are based on our experience and currently available data.
• We are not responsible for the use or application of these products by others.
• No guarantee is either expressed or implied by any suggestion or recommendation.

Benefits & Advantages

Lignite base GAC pores are large making it useful for the reduction of similarly sized contaminants such as color pigments.  Activated carbon adsorbs contaminants (adsorbates).  The adsorbates stick to the pore; they are not absorbed into the carbon.

Advantages

• Large pore size/structure
• Competitively priced
• pH Stable
• Higher iodine number when compared to other lignite base carbon types
• Lignite base activated carbon may be used in residential applications and should be certified to have no residual metals such as arsenic.

Disadvantages

• Hardness Specification

Norit Americas (Formerly Cabot)

• Urbans Aqua supplies Norit Americas’ HydroDarco 4000 (HD4000).
  • Meets AWWA B604.
  • It is Kosher certified.
  • Meets NSF/ANSI 61.
• HD4000 can be used to remove color bodies like tannic based color as post treatment to tannin removal systems. Doctor Frog suggests reviewing the tannin removal application before using carbon.
  • Typical Bed Expansion During Backwash specification chart
  • HydroDarco 4000 Specification Sheet norit-hydrodarco4000
  • SDS Hydrodarco 4000 Norit S-GAC-USA&Canada-EN

PFAS Removal

• HD4000 is approved for use in the state of NY for the reduction of PFAS.
• Contact Urbans Aqua for help determining the correct carbon choice.

Norit -Infosheet-Removal-of-PFAS-from-Ground-and-Surface-Water

Specialty Applications

We use activated carbon to solve a variety of water treatment problems.

• The most common and basic problem solved is unwanted taste and odor. Municipalities inject chlorine for a good reason – it keeps us safe! Many people don’t like the taste so they buy bottled water or install reverse osmosis systems, refrigerator filters, etc. Just about all activated carbon will remove taste and odor.
• There are specific activated carbon products designed to meet industry standards.
  • Kidney Dialysis
  • PFAS/PFOA
  • Disinfection Byproducts
  • MTBE
  • VOC
• BOTTOM LINE – Have the water tested, know the contaminant levels, EBCT, and understand the industry you’re working in before applying an activated carbon system.  Contact us with your applications beforehand!

Choosing Activated Carbon by Application - Specialty Carbon

Why buy from Urbans Aqua?

• Urbans Aqua sources and stocks Hydo Darco 4000  lignite base GAC from Norit Americas (formerly Cabot).
• We assure product quality and consistently by sourcing from Norit, a reliable, single source manufacturer of activated carbon.
  • Single source manufacturing ensures consistent product quality.
    • Our carbon manufacturers source only raw materials tested to meet their specifications.
    • The manufacturing process is strictly controlled.
    • Prior to shipment to Urbans Aqua warehouses each lot is tested and certified to meet the specifications set forth in the product bulletin.
    • Certificates of analysis shipped with each lot upon request of our customers.
  • Reliable stock
    • Urbans Aqua is a major distributor of activated carbon.  Loyalty to our suppliers enables us to have consistent supply.  As a result, we experience very few stock shortages.