Patent · US Expired

Method for ecological utilization of acid effluents of fuller's earth

US5814209A · kind A · utility

2Cited by

8References

20Claims

0Family size

Assignee

Sud Chemie, Inc. · US

Inventors

Reinhard Hahn · Vilsheim, DE
Klaus Schurz · Munich, DE
Hans Buckl · Bad Aibling, DE
Wolfgang Eisenschmid · Wolnzach, DE

Key dates

Filing date	Oct 2, 1994
Grant date	Sep 29, 1998
Priority date	—
Expiry date	Oct 2, 2014

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB01J20/10
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

Disclosed is a process for the ecological usage of acid effluents. Also disclosed is a sorption agent which is characterized in that an acid effluent, created from the production of fullers earth which contains as main ingredients Fe.sup.2+/3+ -, Al.sup.3+ -, Ca.sup.2+ - and Mg.sup.2+ cations and inorganic anions, is reacted with an alkali silicate. The resultant precipitate is separated in an aqueous phase and, when necessary, purified and dried. The sorption agent can be used for the bleaching of oils or for the removal of soaps, phospholipids and heavy metals from oils, specifically edible oils.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.