Magnesium Oxide Relationship with Magnesium Hydroxide

It is very common to hear someone in the wastewater treatment industry refer to something called &#;MagOx&#; as an alkaline additive they use to control pH or low alkalinity conditions.  Often they are simply using this term as a nickname when talking about either Magnesium Hydroxide or Magnesium Oxide, which is the chemical precursor to Magnesium Hydroxide, but which has very different properties.  So, when looking to obtain an additive that will provide the most cost-effective pH control performance for your wastewater treatment application, it is important to understand the relationship between Magnesium Oxide and Magnesium Hydroxide, and how not all products are equal.

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First of all, the chemistry of Magnesium Oxide (MgO) and Magnesium Hydroxide (Mg(OH)2) is based on the Magnesium di-cation (Mg2+).  Magnesium is an essential macronutrient and is the core element in chlorophyll &#; the stuff that makes plants green and drives photosynthesis.  While MgO and Mg(OH)2 are very similar, knowing the differences in the manufacturing processes for each will help to understand the physical and chemical differences &#; which is very important in the selection process of the chemical best suited for your application.

Magnesium Oxide (MgO) is typically obtained from the calcination (heating) of Magnesite ore (Magnesium Carbonate or MgCO3) in much the same way as Quicklime (CaO) is formed from Limestone (Calcium Carbonate or CaCO3).  By changing the temperature and speed of how fast the MgCO3 passes through the heat zone, one can control the structure, porosity, and reactivity of the resulting MgO particles.  You may ask why this matters?  The more porous the particulate structure, having more available surface area, the more reactive the MgO.  The ability to control structure and porosity can result in the development of a wide range of MgO products with diverse properties for numerous industrial applications.

Sequestration of heavy metal impacted soil and groundwater Remediation is a remedial technology that has been employed for many years around the world by highly specialized remediation engineers who understand the chemistry well and its application. High reactivity and high purity MgO is much more than a low cost chemical buffer for pH control.

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Sequestration is a process where chemical reagents like Metals Treatment Solution (i.e. MTS®) are applied or injected into soil or groundwater, industrial waste or substrate to form a stable and insoluble precipitate resulting in reduced leachability of the target heavy metals.

Heavy metal sequestration chemically binds metal ions in the free liquids and immobilizes them within the soil / substrate thereby reducing their solubility through the chemical reaction. The physical characteristics of the sequestrated or &#;stabilized&#; contaminated material is not changed by this process with respect to geotechnical properties for redevelopment. It also does not interfere with biological systems or native biota if shallow enough to be in the root zone.

For more information, please visit Reactive Magnesium Oxide Supplier.