Adsorption Filtration — Process Challenge

Activated Carbon for Water Treatment: Bulk GAC & PAC

Municipal and industrial plants need bulk GAC/PAC to strip free chlorine, dissolved organic carbon (TOC), color and taste/odor compounds ahead of RO membranes or final discharge. It is a strong, recurring container-load purchase tied to both finished-water quality and membrane protection
Updated Jun 2026
Solution Approach

RawSource supplies the base chemicals that go into these programs. We can help with product selection, grade matching, and sourcing from multiple origins for supply security.

Typical Treatment Workflow
1
Water & System Assessment
Characterize the water and the system — hardness, alkalinity, pH, TDS/conductivity, microbial load, and the metallurgy and temperatures of the equipment being protected.
2
Program & Chemistry Selection
Match coagulants, flocculants, scale and corrosion inhibitors, biocides, or pH adjusters to the water profile and discharge limits, factoring compatibility with any existing program.
3
Jar Testing & Dosing
Confirm coagulant and flocculant dose and feed point by jar test, set inhibitor and biocide treat rates, and size packaging (drums, totes, bulk) to consumption.
4
Monitoring & Control
Track residuals, turbidity, ORP, corrosion coupons, and effluent compliance, adjusting chemistry and dose as feedwater and load change.
Recommended Chemistries (4)
Activated Carbon (GAC/PAC)
CAS 7440-44-0
Mineral Fillers & Pigments
Color / Pigmentation
1362 (CARBON, ACTIVATED) · Class
In catalog. High surface-area carbon physically adsorbs dissolved organics, color and taste/odor molecules; surface reactions also reductively dechlorinate free chlorine
Melting Point: Melting point equals > 3500 °C   Boiling Point: Sublimes at 3642 °C; triple point (graphite-liq…   Density: The apparent density of beech charcoal is 0.45 …
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activated carbon (GAC), graded by iodine number
CAS 7440-44-0
Mineral Fillers & Pigments
Color / Pigmentation
1362 (CARBON, ACTIVATED) · Class
Higher iodine-number grades give more micropore volume for trace-organic and TOC polishing in backwashable fixed beds
Melting Point: Melting point equals > 3500 °C   Boiling Point: Sublimes at 3642 °C; triple point (graphite-liq…   Density: The apparent density of beech charcoal is 0.45 …
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Powdered activated carbon (PAC)
CAS 7440-44-0
Mineral Fillers & Pigments
Color / Pigmentation
1362 (CARBON, ACTIVATED) · Class
Fine particle size gives fast adsorption kinetics for slug-dosing seasonal taste/odor or spill events into the process stream
Melting Point: Melting point equals > 3500 °C   Boiling Point: Sublimes at 3642 °C; triple point (graphite-liq…   Density: The apparent density of beech charcoal is 0.45 …
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Catalytic / acid-washed carbon
CAS 7440-44-0
Mineral Fillers & Pigments
Color / Pigmentation
1362 (CARBON, ACTIVATED) · Class
Surface-modified carbon catalyzes oxidation of hydrogen sulfide and chloramine that ordinary GAC removes poorly; acid washing lowers ash and metal leaching
Melting Point: Melting point equals > 3500 °C   Boiling Point: Sublimes at 3642 °C; triple point (graphite-liq…   Density: The apparent density of beech charcoal is 0.45 …
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Need help selecting the right chemistry?

Our team can help with grade selection, dosage guidance, and multi-origin sourcing.

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