Treatment of quarry liquid effluent
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United States of America
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May 3, 2022
Grant Date -
Feb 6, 2020
app pub date -
Mar 30, 2018
filing date -
Mar 30, 2018
priority date (Note) -
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status (Latency Note)
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Abstract
Disclosed is a method for preparing a solid material including manganese, the method including the following steps: a. bringing into contact an aqueous effluent including manganese, for example at least 5 mg/L, typically at least 5 to 50 mg/L, and preferably 7 to 25 mg/L of manganese, with an oxidizing agent, manganese, preferably at a temperature between 10° C. and 50° C., and obtaining an oxidized aqueous solution; b. adding a base to the oxidized aqueous solution obtained at the end of step a) until a pH of between 8 and 12, preferably greater than 9, and preferably from 9 to 10.5, and obtaining a solution including a precipitate; c. filtration of the solution obtained at the end of step b); and d. obtaining a solid material including manganese, and especially manganese (IV) and/or Mn (III).
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International Classification(s)
- C07D:HETEROCYCLIC COMPOUNDS
- B09C:RECLAMATION OF CONTAMINATED SOIL
- C07C:ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07B:GENERAL METHODS OF ORGANIC CHEMISTRY; APPARATUS TH....
- B01J:CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS, CO....
- C01G:COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLAS....
- C02F:TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE....
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