公开(公告)号：US20140027387A1

公开(公告)日：2014-01-30

申请号：US14038690

申请日：2013-09-26

Applicant: PANASONIC CORPORATION

Inventor： Yuko MARUO ,  Daisuke INO

IPC: C02F1/32

CPC classification number: C02F1/32 ,  B01J21/063 ,  B01J29/084 ,  B01J35/00 ,  B01J35/004 ,  B01J35/023 ,  B01J37/0221 ,  B01J37/343 ,  C02F2305/10 ,  C02F2305/12 ,  Y02W10/37

Abstract: Provided is a method for decomposing at least one of organic compound contained in an aqueous solution by using a titanium dioxide photocatalyst that is excellent in both photocatalytic activity and solid-liquid separation performance for water treatment. The method includes: a step of adding catalyst particles into the aqueous solution; a step of decomposing the organic compound by irradiating the aqueous solution with light having a wavelength of 200 nanometers or more and 400 nanometers or less while stirring the catalyst particles in the aqueous solution; and a step of stopping the stirring, and separating the catalyst particles from the aqueous solution by sedimentation. The catalyst particles are composed only of titanium dioxide particles and zeolite particles, the titanium dioxide particles are adsorbed on outer surfaces of the zeolite particles, the zeolite particles have a silica/alumina molar ratio of 10 or more, and the catalyst particles are contained in the aqueous solution at a concentration of 0.4 grams/liter or more and 16 grams/liter or less.

Abstract translation: 本发明提供一种通过使用光催化活性和水分处理的固液分离性能优异的二氧化钛光催化剂来分解水溶液中含有的有机化合物中的至少一种的方法。 该方法包括：将催化剂颗粒加入到水溶液中的步骤; 通过在波长为200纳米以上且400纳米以下的光中照射水溶液，同时搅拌水溶液中的催化剂颗粒来分解有机化合物的步骤; 和停止搅拌的步骤，并通过沉降从催化剂颗粒与水溶液分离。 催化剂颗粒仅由二氧化钛颗粒和沸石颗粒组成，二氧化钛颗粒被吸附在沸石颗粒的外表面上，沸石颗粒的二氧化硅/氧化铝摩尔比为10以上，催化剂颗粒包含在 浓度为0.4克/升或更高至16克/升或更低的水溶液。

公开(公告)号：US20140151302A1

公开(公告)日：2014-06-05

申请号：US14172609

申请日：2014-02-04

Applicant: PANASONIC CORPORATION

Inventor： Yuko MARUO ,  Daisuke INO

IPC: C02F1/70 ,  C02F1/44 ,  C02F1/32

CPC classification number: C02F1/444 ,  B01D61/147 ,  B01D61/16 ,  B01D63/082 ,  B01D2311/04 ,  B01D2311/12 ,  B01D2311/2619 ,  B01D2311/2638 ,  B01D2315/06 ,  B01J21/063 ,  B01J29/08 ,  B01J35/004 ,  B01J35/023 ,  B01J37/06 ,  B01J37/343 ,  C02F1/32 ,  C02F1/70 ,  C02F1/725 ,  C02F2001/007 ,  C02F2101/22 ,  C02F2305/10 ,  Y02W10/37 ,  B01D2311/2649 ,  B01D2311/2642 ,  B01D2311/263

Abstract: Provided is a method for treating a hexavalent chromium-containing aqueous solution by water treatment employing a titanium dioxide photocatalyst that is excellent in both photocatalytic activity and solid-liquid separation performance. The method according to the present disclosure includes the steps of: adding catalyst particles to the aqueous solution; reducing hexavalent chromium by irradiating the aqueous solution with light having a wavelength of 200 nanometers or more and 400 nanometers or less while stirring the catalyst particles in the aqueous solution; and stopping the stirring and separating the catalyst particles from the aqueous solution by sedimentation. Each catalyst particle is composed only of a titanium dioxide particle and a zeolite particle, the titanium dioxide particle is adsorbed on the outer surface of the zeolite particle, the zeolite particle has a silica/alumina molar ratio of 10 or more, and the catalyst particles are contained in the aqueous solution at a concentration of 0.4 grams/liter or more and 16 grams/liter or less.

Abstract translation: 本发明提供一种通过使用二氧化钛光催化剂进行水处理来处理六价铬含量水溶液的方法，所述二氧化钛光催化剂具有优异的光催化活性和固液分离性能。 根据本公开的方法包括以下步骤：将催化剂颗粒加入到水溶液中; 通过用波长为200纳米以上且400纳米以下的光照射水溶液，同时搅拌水溶液中的催化剂颗粒来还原六价铬; 并通过沉降停止搅拌和分离催化剂颗粒与水溶液。 每个催化剂颗粒仅由二氧化钛颗粒和沸石颗粒组成，二氧化钛颗粒被吸附在沸石颗粒的外表面上，沸石颗粒的二氧化硅/氧化铝摩尔比为10以上，催化剂颗粒 以0.4克/升以上16克/升以下的浓度包含在水溶液中。

公开(公告)号：US20140151301A1

公开(公告)日：2014-06-05

申请号：US14172584

申请日：2014-02-04

Applicant: PANASONIC CORPORATION

Inventor： Yuko MARUO ,  Daisuke INO

IPC: C02F1/32 ,  C02F1/72

CPC classification number: C02F1/725 ,  B01D61/025 ,  B01J29/08 ,  B01J29/084 ,  B01J35/002 ,  B01J35/004 ,  B01J35/02 ,  B01J37/04 ,  B01J37/06 ,  B01J37/343 ,  C02F1/001 ,  C02F1/32 ,  C02F1/325 ,  C02F1/444 ,  C02F1/5245 ,  C02F9/00 ,  C02F2001/007 ,  C02F2101/103 ,  C02F2305/10 ,  Y02W10/37

Abstract: Provided is a method for treating an arsenic-containing aqueous solution by water treatment employing a titanium dioxide photocatalyst that is excellent in both photocatalytic activity and solid-liquid separation performance. The method according to the present disclosure includes the steps of adding catalyst particles to the aqueous solution; oxidizing trivalent arsenic by irradiating the aqueous solution with light having a wavelength of 200 nanometers or more and 400 nanometers or less while stirring the catalyst particles in the aqueous solution; and stopping the stirring and separating the catalyst particles from the aqueous solution by sedimentation. Each catalyst particle is composed only of a titanium dioxide particle and a zeolite particle, the titanium dioxide particle is adsorbed on the outer surface of the zeolite particle, the zeolite particle has a silica/alumina molar ratio of 10 or more, and the catalyst particles are contained in the aqueous solution at a concentration of 0.4 grams/liter or more and 16 grams/liter or less.

Abstract translation: 本发明提供一种通过使用二氧化钛光催化剂进行水处理来处理含砷水溶液的方法，所述二氧化钛光催化剂具有优异的光催化活性和固液分离性能。 根据本公开的方法包括将催化剂颗粒添加到水溶液中的步骤; 通过用波长为200纳米以上且400纳米以下的光照射水溶液，同时搅拌水溶液中的催化剂颗粒来氧化三价砷; 并通过沉降停止搅拌和分离催化剂颗粒与水溶液。 每个催化剂颗粒仅由二氧化钛颗粒和沸石颗粒组成，二氧化钛颗粒被吸附在沸石颗粒的外表面上，沸石颗粒的二氧化硅/氧化铝摩尔比为10以上，催化剂颗粒 以0.4克/升以上16克/升以下的浓度包含在水溶液中。