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Mineral Processing Water Treatment Using Magnesium Oxide.

Authors
Schiller-JE; Tallman-DN; Khalafalla-SE
Source
Environ Prog 1984 May; 3(2):136-141
Link
NIOSHTIC No.
10003996
Abstract
This paper describes two applications where magnesium oxide (mgo) can be used to purify process water in two ways: (1) to filter out suspended solids and (2) to precipitate dissolved heavy metals. Granular mgo (periclase mineral) out-performs sand in deep bed filters, since an mgo filter system operates with cycles up to twice as long and gives a cleaner filtrate than a comparable sand filter. To precipitate heavy metals, powdered mgo (magnesia chemical) is used instead of lime or caustic soda. The mgo-formed sludge cements into a solid mass on standing and occupies only about 20 to 30 pct of the volume as the precipitates produced by more soluble bases.
Publication Date
19840501
Document Type
OP;
Fiscal Year
1984
NTIS Accession No.
NTIS Price
Identifying No.
OP 89-84
Issue of Publication
2
NIOSH Division
TCRC;
Source Name
Environ. Prog., V. 3, No. 2, May 1984, PP. 136-141
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