Recycle process for removing dissolved heavy metals from water w

Details Recycle process for removing dissolved heavy metals from water w Recycle process for removing dissolved heavy metals from water w

1996-08-12

1999-11-02

McCarthy, Neil

Liquid purification or separation

Processes

Making an insoluble substance or accreting suspended...

210712, 210713, 210719, 210722, 210912, 210913, 210914, C02F 162, C02F 170

Patent

active

059763833

ABSTRACT:
Aluminum particles are reacted with heavy metal ions in a first acidic aqueous solution to form heavy metallic particles that are suitable for recycling and reuse when recovered from the first aqueous solution. The first residual aqueous solution may also contains ferrous ions obtained by acid redissolving a co-precipitated heavy metal hydroxide and ferrous hydroxide sludge that is produced in the treatment of a dilute chelated heavy metal solution. The first residual aqueous solution with heavy metals substantially removed is recycled and reused as the ferrous reagent for treating said dilute chelated heavy metal bearing solution. The process disclosed herein is useful for treating both dilute and concentrated wastes and wastewaters generated by industries such as metal plating and metal etching and printed circuit board fabrication.

REFERENCES:
patent: 1479542 (1924-01-01), Hirschikind
patent: 3216790 (1965-11-01), Murib
patent: 3226185 (1965-12-01), Gyan et al.
patent: 3260593 (1966-07-01), Zimmerley et al.
patent: 3634071 (1972-01-01), Spedden et al.
patent: 3770630 (1973-11-01), Kamperman
patent: 3902896 (1975-09-01), Borbely et al.
patent: 4076795 (1978-02-01), Tiethof
patent: 4157980 (1979-06-01), Tiethof
patent: 4405464 (1983-09-01), Baldwin et al.
patent: 4566975 (1986-01-01), Allgulin
patent: 4599177 (1986-07-01), Hayashi et al.
patent: 4606829 (1986-08-01), Rice et al.
patent: 4698162 (1987-10-01), Guilbault et al.
patent: 4859447 (1989-08-01), Sanglet
patent: 4956097 (1990-09-01), Courduvelis
patent: 5011610 (1991-04-01), Martin et al.
patent: 5019273 (1991-05-01), Fehsenfeld
patent: 5039428 (1991-08-01), Wentzler et al.
patent: 5085836 (1992-02-01), Booker
patent: 5102556 (1992-04-01), Wong
patent: 5122279 (1992-06-01), Guess
patent: 5133873 (1992-07-01), Catlin et al.
patent: 5298168 (1994-03-01), Guess
patent: 5389262 (1995-02-01), Guess
patent: 5545331 (1996-08-01), Guess

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