TW 
EN Foundry Triethylamine Odor Affects More Than Just the Air
Management of Odor Improvement
Triethylamine (TEA) and dimethylethylamine (DMEA) used in Cold Box core-making carry an intense fishy odor that irritates workers' eyes and airways at very low concentrations and they're the leading cause of environmental inspections and neighbor complaints at foundries.
Angel's natural enzyme deodorizer reacts with the nitrogen bonds in amine compounds, decompose and degrade odors , while also decomposing SO₂ from melting and pouring and H₂S from copper casting cooling zones. All reactions occur at ambient temperature with no secondary pollution — safe for occupied workspaces.
Angel's natural enzyme deodorizer reacts with the nitrogen bonds in amine compounds, decompose and degrade odors , while also decomposing SO₂ from melting and pouring and H₂S from copper casting cooling zones. All reactions occur at ambient temperature with no secondary pollution — safe for occupied workspaces.
Foundry Exhaust Compounds Angel Enzymes Decompose
- Sulfur oxides (SO₂) — acidic irritant gas from melting and pouring
- Formaldehyde — released during resin sand curing
- Ammonia (NH₃) — decomposition product of nitrogen-based binders
- Hydrocarbons (VOCs) — foam pattern burnout and solvent evaporation
Solvent odors — coating and cleaning agent vapors
The plus side of Angel's products
Safe
Passed skin and eye contact safety tests safe for occupied production floors
Effective
Fishy TEA odor noticeably improved within 24 hours; no changes to existing exhaust equipment
Professional
Workplace safety and environmental compliance — SGS + Intertek certified,Invention Patent
Natural
on-toxic plant formula
no secondary pollution
EU REACH compliant
no secondary pollution
EU REACH compliant
Sulfur Gas Treatment
SO₂ & H₂S Decomposition Paragraph: Sulfur dioxide from melting and pouring, and hydrogen sulfide released during copper casting cooling, are acidic irritant gases. Angel's enzymes convert them to odorless sulfates through oxidation-reduction — improving both in-plant air quality and the surrounding environment.
Work Zone Air Quality
Reducing Occupational Safety Risk Paragraph: Automated mist nozzles at melting, pouring, and sand mixing zones neutralize volatile harmful gases in real time. Odor and irritation levels drop noticeably — helping pass occupational safety inspections and retain floor workers.
Lost Foam Casting Exhaust
Styrene & VOC Treatment Paragraph: In lost foam casting, the vaporizing foam pattern releases styrene and large volumes of VOCs. Angel's enzymes degrade aromatic ring structures, reducing total exhaust concentration and odor intensity — supporting air emission compliance.
Simultaneous Dust & Odor Suppression
The fine mist droplets also suppress dust — while enzymes decompose odor molecules, the droplets capture suspended particulates. One system addresses two problems at once.
Aluminum & Zinc Alloy Foundry Exhaust Treatment
Release-agent smoke and solvent odors from non-ferrous die casting and gravity casting can be decomposed by injecting Angel enzymes at the exhaust end — no modification to existing dust collection or exhaust equipment.
Brass & Bronze Casting
Dedicated H₂S Treatment Paragraph: Hydrogen sulfide released as copper alloy castings cool is highly toxic with intense odor. Angel installs localized spray points at cooling zones, using a high-concentration formula for rapid H₂S neutralization to protect worker safety.
