Detoxication of industrial waste

Detoxication of industrial waste

A process for the detoxication of waste slurries, in particular from the leather and skin industry, containing heavy metal salt complexes and organic materials comprises treating a suspension containing at most 100 kg/m of solid material with sulphuric acid and/or a mineral acid mixture composed of...

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Hauptverfasser: DR EDIT BATOR, JOZSEF BAKAN, ZOLTAN REPASY, LAJOS BARNA, DR ZOLTAN KISS, MARIA VOROSHAZI, BELA FARKAS, FERENC NAGY
Format: Patent
Sprache:eng
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CHEMISTRY
METALLURGY
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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creator DR EDIT BATOR
JOZSEF BAKAN
ZOLTAN REPASY
LAJOS BARNA
DR ZOLTAN KISS
MARIA VOROSHAZI
BELA FARKAS
FERENC NAGY
description A process for the detoxication of waste slurries, in particular from the leather and skin industry, containing heavy metal salt complexes and organic materials comprises treating a suspension containing at most 100 kg/m of solid material with sulphuric acid and/or a mineral acid mixture composed of at least 30% by weight of sulphuric acid. The acid liquid containing the heavy metal salts is separated from the slurry, and the solution is neutralized; the metal salts are precipitated, purified and the organic slurry is washed to make it metal ion- and acid-free.
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subjects CHEMISTRY
METALLURGY
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
title Detoxication of industrial waste
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