公开(公告)号：FI94432C

公开(公告)日：1995-09-11

申请号：FI911401

申请日：1991-03-22

Applicant: BASF AG

Inventor： HABERMANN WOLFGANG ,  BOCHNITSCHEK WERNER ,  FRITZMANN JOHANN ,  HAMMES PETER ,  PROLL THEO ,  WEISBRODT WALTER

IPC: C25B1/16 ,  B01D61/44 ,  B01D61/52 ,  C25B1/10 ,  C25B1/22 ,  C25B13/04 ,  C25B1/00 ,  C25B13/08

公开(公告)号：DE19826019A1

公开(公告)日：1999-12-16

申请号：DE19826019

申请日：1998-06-10

Applicant: BASF AG

Inventor： LEUTNER BERND ,  HANUS FRANK ,  WEISBRODT WALTER

IPC: C02F1/72 ,  C02F1/76

Abstract: Oxidative degradation of hydroxylamine in an aqueous solution, especially waste water is such that: (a) the oxidation agent is an alkali(ne earth) hypohalite or a peroxo-mono- (or -di-)sulfuric acid or salt; and (b) the addition of the oxidation agent is controlled by the redox potential.

公开(公告)号：FI94432B

公开(公告)日：1995-05-31

申请号：FI911401

申请日：1991-03-22

Applicant: BASF AG

Inventor： HABERMANN WOLFGANG ,  BOCHNITSCHEK WERNER ,  FRITZMANN JOHANN ,  HAMMES PETER ,  PROLL THEO ,  WEISBRODT WALTER

IPC: C25B1/16 ,  B01D61/44 ,  B01D61/52 ,  C25B1/10 ,  C25B1/22 ,  C25B13/04 ,  C25B1/00 ,  C25B13/08

Abstract: A process is described for the electrochemical cleavage of alkali metal sulphates into relatively highly concentrated solutions of alkali metal hydroxide and sulphuric acid by means of the use of a 3-compartment electrodialysis cell at temperatures of >/= 70 to equipped with an anion exchanger membrane, the polymeric ion exchanger matrix of which is composed of a styrene/divinylbenzene copolymer, having very highly basic quaternary ammonium groups, and a hydronium ion blocker, on the side of which facing the central chamber is located an anion exchanger layer or anion exchanger membrane having tertiary or secondary amino groups.

公开(公告)号：FI911401A

公开(公告)日：1991-09-24

申请号：FI911401

申请日：1991-03-22

Applicant: BASF AG

Inventor： HABERMANN WOLFGANG ,  BOCHNITSCHEK WERNER ,  FRITZMANN JOHANN ,  HAMMES PETER ,  PROLL THEO ,  WEISBRODT WALTER

IPC: C25B1/16 ,  B01D61/44 ,  B01D61/52 ,  C25B1/10 ,  C25B1/22 ,  C25B13/04 ,  C25B

Abstract: A process is described for the electrochemical cleavage of alkali metal sulphates into relatively highly concentrated solutions of alkali metal hydroxide and sulphuric acid by means of the use of a 3-compartment electrodialysis cell at temperatures of >/= 70 to equipped with an anion exchanger membrane, the polymeric ion exchanger matrix of which is composed of a styrene/divinylbenzene copolymer, having very highly basic quaternary ammonium groups, and a hydronium ion blocker, on the side of which facing the central chamber is located an anion exchanger layer or anion exchanger membrane having tertiary or secondary amino groups.

公开(公告)号：FI911401A0

公开(公告)日：1991-03-22

申请号：FI911401

申请日：1991-03-22

Applicant: BASF AG

Inventor： HABERMANN WOLFGANG ,  BOCHNITSCHEK WERNER ,  FRITZMANN JOHANN ,  HAMMES PETER ,  PROLL THEO ,  WEISBRODT WALTER

IPC: C25B1/16 ,  B01D61/44 ,  B01D61/52 ,  C25B1/10 ,  C25B1/22 ,  C25B13/04 ,  C25B

Abstract: A process is described for the electrochemical cleavage of alkali metal sulphates into relatively highly concentrated solutions of alkali metal hydroxide and sulphuric acid by means of the use of a 3-compartment electrodialysis cell at temperatures of >/= 70 to equipped with an anion exchanger membrane, the polymeric ion exchanger matrix of which is composed of a styrene/divinylbenzene copolymer, having very highly basic quaternary ammonium groups, and a hydronium ion blocker, on the side of which facing the central chamber is located an anion exchanger layer or anion exchanger membrane having tertiary or secondary amino groups.