Posted in General
Caustic Soda prices have risen to unprecedented levels. Truckload costs for Caustic Soda (sodium hydroxide) are currently greater than $1,000 to $1,200 per dry ton. Just a year ago costs were one–half of this amount.
Aries Magnesium Hydroxide may be your answer. It can reduce your wastewater neutralization costs dramatically. That’s because you will typically use 27% less Magnesium Hydroxide than Caustic Soda/sodium hydroxide. That’s on top of the fact that Magnesium Hydroxide will cost less!
|Comparison Basis||Caustic Soda|
|Product form||50% solution – NaOH||60% solids slurry – Mg(OH)2|
|Raw material cost|
(ton per ton basis)
|Fluctuates widely with supply; often more expensive than Mg(OH)2||Generally competitive with caustic soda; pricing consistent|
✓ per ton H2SO4
✓ per ton HCl
✓ per ton HNO3
NaOH Consumption vs. Mg(OH)2
1630 dry lb.
1190 dry lb.
|Capital investment||Cost associated with safety considerations; no agitated tank required; freeze protection needed for 50% caustic||Agitated storage tank required|
|Residence time||Extremely fast acting to complete neutralization||Moderately fast acting to 95% of neutralization; more controllable process|
|Maximum pH in overtreatment||14||9|
|Sludge produced||High volume, gel-like with heavy metals||Dense, low volume with heavy metals; easier to dewater|
|Safety||Hazardous material requiring rigorous safety procedures. Sara 313 listed.||Non-hazardous material|
|Environmental||Sodium ion discharge; can easily overshoot desired pH||Buffers at pH 9|
Aries Technical Sales Staff is available to perform a site survey to determine Magnesium Hydroxide’s applicability to your process. Aries can provide a complete Magnesium Hydroxide feed and control system for trials. Aries technical staff can design a permanent Magnesium Hydroxide storage, feed and control system for your facility.