???? USE CASE | PEI Removal from Wastewater Using Activated Carbon
PEI Removal from Wastewater Using Activated Carbon
???? USE CASE | PEI Removal from Wastewater Using Activated Carbon
PEI Removal from Wastewater Using Activated Carbon
Friday, 31 Jan 2025
???? USE CASE | PEI Removal from Wastewater Using Activated Carbon
Polyethylenimine (PEI), a high molecular weight cationic polymer widely used in water treatment and chemical processing, poses significant challenges in wastewater discharge due to its non-biodegradable nature and high nitrogen content.
At FirstMolecule, we recently supported a client in successfully removing residual PEI from industrial wastewater using our mesoporous coal-based activated carbon.
???? Key Highlights:
✔️ PEI removal efficiency >90%
✔️ Optimized pH range: 5.5–6.5
✔️ Contact time: 45 minutes
✔️ Carbon type: FM AquaMeso 1000
✔️ Surface area & pore structure tailored for high-MW organics
Why it worked:
???? Macropore & mesopore dominance allowed large PEI molecules to diffuse effectively
???? Surface acidic functional groups enhanced electrostatic adsorption
???? Minimal fouling; carbon regeneration was feasible
???? Outcome: The client achieved regulatory compliance for nitrogen discharge and eliminated polymer interference in downstream treatment steps — sustainably and cost-effectively.
This case reaffirms the importance of selecting the right activated carbon based on the molecular characteristics of the target contaminant.
???? Want to know if your process wastewater contains hard-to-remove polymers like PEI? Let’s talk solutions.
#ActivatedCarbon #PEIRemoval #WaterTreatment #FirstMolecule #IndustrialWastewater #EnvironmentalCompliance #CarbonTechnology
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