Treatment of chromium-containing waste effluents

Patent

report

zeolite MAP as detergency builder reduces perfume which is a problem associated with conventional compositions containing perfume capsules.

MISCELLANEOUS Treatment

optional immersing of the zeolite-coated salt-containing solutions to have metal Uniform zeolite coatings are obtained.

Antimicrobial

APPLICATIONS

of chromium-containing

M. Hotsuta Pii Efu Shii K.K. Jpn. Kokai Tokkyo 1994

leakage detergent

Koho

waste

96,80,485,

Mar.

effluents

26,1996;

Appl.

Sept.

13,

The treatment process involves contacting Cr3+-containing waste effluents with synthetic zeolites. The Cr3+ ions may be formed by reduction of Cr6+ ions. The process removes Cr3+ efficiently from plating wastewater, tanning wastewater, pigment manufacturing wastewater, etc.

Manufacture

of zeolite-coated

metal

S. Kora; K. Sakado; E. Kobayashi Nisshin Steel Co. Ltd. Jpn. Kokai Tokkyo Koho 96,119,624, 1994 The manufacture mersing or spray ing Al alkoxides,

May

14, 1996; Appl.

Oct. 19,

of zeolite-coated metal plates involves imcoating of metal plates with solutions containalcohols, and alkoxysilanes, drying, firing, and

Amine agents adsorbed on anhydrous mers with anhydride groups T.P. Abend PCT Int. Appl. 96,11,229, Apr. 18, 1996; Antibacterial containers S. Ochiai;

Toppan Jpn.

laminated

polypropylene

T. Takasaki;

Printing

Kokai

zeolite

X for cross-linking

Swiss

Appl.

sheets

containing

poly-

Ag zeolites

Koho

96.90,726,

Apr.

9, 1996;

Appl.

Sept.

Antibacterial silicone rubber compositions H. Honma; T. Matsushita; K. Oota Dow Corning Toray Silicone Jpn. Kokai Tokkyo Koho 96,73,742, Mar.

containing

22, 1994

19, 1996;

Dual bed catalyst system for xylene catalyst J.S. Abichandani; CR. Venkat Mobil Oil Corp. U.S. 5.516.956. May 14. 1996; Appl.

Appl.

isomerization

Nov.

420

for water

Zeolites

as a hydrocarbon S. Kanejima Inc. 96,126,844, May

purification

l&417-421,

with

1997

Production of iodide with an A. Utsunomiya; Mitsui Toatsu Eur. Pat. Appt.

zeolite

18, 1994

Appl.

conversion

21, 1996;

ozone

and

May

benzene

gases

Sept.

using

26, 1994

catalyst

Appl. charcoal

Oct. 31. 1994 and

14, 1996; using

with

Apr.

Y-type

16, 1996;

catalysts

Apr.

Appl.

Oct. 26, 1994

a Pt-containing

K.K.; Cosmo Oil Co. Lrd. 96,119,883, May 14, 1996;

KL zeolite

Appl.

Oct. 21, 1994

zeolite

Appl.

catalysts

Sept.

30, 1994

for epoxidation

23, 1996;

Appl. for

Appl.

of olefins

Sept.

30, 1994

manufacture

Sept.

of

12, 1994

refined hydrogen iodide by contacting crude hydrogen A-type zeolite or a mordenite type zeolite K. Sasaki; Y. Tanaka et al. Chemicals Inc. 714,849, June 5, 1996; Jpn. Appl. Nov. 28, 1994

Hydrocarbon conversion process using G.D. Mohr; T.-J. Chen; K.R. Clem et al. Exxon Chemical Patents Inc. PCT Int. Appl. 96,16,004, May 30, 1996; exhaust

food

com-

22, 1994 a ZSM-5

for culinary

Zeolites having SiO,/AI,O, ratio 150 as catalysts pdialkylbenzenes M. Yoshikawa; Y. Imada; H. Matsuyoshi Tora y lndusfries Inc. Jpn. Kokai Tokkyo Koho 96,80,438, Mar. 26, 1996;

31, 1994

anionic

96,117,759, from

Crystalline titanium-silicalite-coated H. Oomori; K. Saito; Y. Suzuki et al. Maruzen Oil Co. Ltd. Jpn. Kokai Tokkyo Koho 96,103,659,

30, 1994

Aug.

using

Decomposition of nitrogen oxides in combustion Ti-zeolite catalyst M. Hashimoto; S. Anho; H. Yamashita Nippon Oil Co. Ltd. Jpn. Kokai Tokkyo Koho 96,89,761, Apr. 9, 1996; Silver on zeolite ZSM-5 T. Tsunoda; M. Sekiguchi; Asahi Chemical Industries Jpn. Kokai Tokkyo Koho

Ag/A-type

an Ag zeolite

Detergent compositions with zeolite builders containing pounds with sutfactancy and suds suppression effects F.E. Hardy; B.T. Ingram; C.L.M. Vermote Procter and Gamble Co. PCT Int. Appl. 96,09,273, Mar. 28, 1996; U.K. Appl. Sept.

containers

lsomerization of dimethylnaphthalene T. Nobusawa; T. Suzuki Kawasaki Steel Co. Jpn. Kokai Tokkyo Koho 96,99,916,

Y. Nakagawa

Antibactial polymer compositions for stationery containing zeolite T. Yamamoto; S. Uchida; Y. Kurihara et al. Shinagawa Fuel Co. Ltd.; Shinanen Zeomitsuku K.K. Jpn. Kokai Tokkyo Koho 96,67,770, Mar. 12, 1996; Appl. Aug.

Apparatus A. Hara

for

Co. Ltd.

Tokkyo

packaging

Preparation of biphenyl catalyst M. Abe Cosmo Sogo Kenkyusho Jpn. Kokai Tokkyo Koho

Oct. 10, 1994

feed pipes

T. Tanahashi; T. Goryoda Kishimoto Akira Jpn. Kokai Tokkyo Koho 96,104,370, Apr. 23, 1996; Appl. Oct. 4, 1994 The title containers have an inner resin layer that contains hydrophobic zeolite (10%) with Si02/AI,0, mol ratio 210 (e.g., zeolite ZSM-51, and they retain food flavor and orevent food oxidation.

Seiden Kogyo Jugen Jpn. Kokai Tokkyo Koho

PATENTS RECEIVED BUT NOT ABSTRACTED

metal plates in metal in the zeolite layers.

K. Midorikawa Joyo Polymer K.K. Jpn. Kokai Tokkyo Koho 96,118,447, May 14,1996; Appl. Oct. 25, 1994 To prevent multiplication of bacteria in hot water feed pipes, sanitary pipes are manufactured by adding zeolite containing an inorganic antimicrobial agent (e.g., Ag on zeolite) to uncrosslinked polyethylene pellets in an extruder, heating to 150-180°C. and extruding the melt to obtain an uncross-linked polyethylene pipe, which is then heated at 280°C to obtain a sanitary crosslinked polyethylene pipe.

Microwavable

plates

hot water

ions

zeolite

a

a bound

U.S.

Appl.

zeolite

Nov.

Crystalline aluminosilicates containing Ag and group hydrocarbon adsorbents for exhaust gas purification T. Katsuno; M. Kamikubo; T. lkeda et al. ldemitsu Kosan Co.; Nissan Motor Jpn. Kokai Tokkyo Koho 96,99,033, Apr. 16, 1996; Appl.

catalyst

23, 1994 Ill6

Sept.

elements

as

29, 1994

Removal of nitrogen oxides from exhaust gases using reduction catalysts containing 21 transition metal on zeolites (SiO,/AI,O, mol ratio >15:1) T. Yoshimura; Y. Hosose; S. Kasahara et al. Tosoh Corp. Jpn. Kokai Tokkyo Koho 96,108,043, Apr. 30, 1996; Appl. Oct. 12, 1994