Abstract

It is an object of the present invention to provide an activated carbon having a high mechanical strength and an excellent filtration capacity for trihalomethanes. An activate carbon in which a pore volume A of pores with a size of 1.0 nm or less, of pore volumes calculated by the QSDFT method from a nitrogen desorption isotherm, is 0.23 cc/g or more and 0.25 cc/g or less, a pore volume B of pores with a size of 1.5 nm or more and 2.5 nm or less, of pore volumes calculated by the QSDFT method from the nitrogen desorption isotherm, is more than 0.12 cc/g and 0.19 cc/g or less, and the activated carbon has a specific surface area of 1000 m2/g or more and 1200 m2/g or less.

IPC Classes  ?

• B01J 20/20 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbonSolid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising inorganic material comprising carbon obtained by carbonising processes
• B01J 20/28 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof characterised by their form or physical properties
• B01J 20/30 - Processes for preparing, regenerating or reactivating
• C02F 1/28 - Treatment of water, waste water, or sewage by sorption
• C02F 101/36 - Organic compounds containing halogen

Abstract

A problem of the present invention is to provide activated carbon with high mechanical strength and outstanding trihalomethane filtration ability.　Activated carbon in which a pore volume A of pore widths in the range of 1.0 nm or less, from among pore volumes calculated using the QSDFT method from a nitrogen desorption isotherm, is 0.23 cc/g or more and 0.25 cc/g or less, a pore volume B of pore widths in the range of 1.5 nm or more and 2.5 nm or less, from among pore volumes calculated using the QSDFT method from the nitrogen desorption isotherm, is more than 0.12 cc/g and 0.19 cc/g or less, and the specific surface area is ​​1000 m2/g or more and 1200 m2/g or less.

IPC Classes  ?

• C01B 32/336 - Preparation characterised by gaseous activating agents
• B01J 20/20 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbonSolid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising inorganic material comprising carbon obtained by carbonising processes
• B01J 20/28 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof characterised by their form or physical properties
• B01J 20/30 - Processes for preparing, regenerating or reactivating
• C02F 1/28 - Treatment of water, waste water, or sewage by sorption
• D01F 9/15 - Carbon filamentsApparatus specially adapted for the manufacture thereof by decomposition of organic filaments from pitch or distillation residues from coal pitch

Abstract

There is provided an activated carbon having a high total trihalomethane filtration capacity, even in water treatment by passing water at a high superficial velocity (SV). In the activated carbon of the present invention, a pore volume A of pores with a size of 1.0 nm or less, of pore volumes calculated by the QSDFT method, is 0.3 cc/g or more, and a pore volume B of pores with a size of 3.0 nm or more and 3.5 nm or less, of pore volumes calculated by the QSDFT method, is 0.009 cc/g or more.

IPC Classes  ?

• C02F 1/28 - Treatment of water, waste water, or sewage by sorption
• B01J 20/20 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbonSolid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising inorganic material comprising carbon obtained by carbonising processes
• B01J 20/30 - Processes for preparing, regenerating or reactivating
• C01B 32/33 - Preparation characterised by the starting materials from distillation residues of coal or petroleumPreparation characterised by the starting materials from petroleum acid sludge
• C01B 32/336 - Preparation characterised by gaseous activating agents
• C02F 101/36 - Organic compounds containing halogen

Abstract

There is provided an activated carbon having a high total trihalomethane filtration capacity, even in water treatment by passing water at a high superficial velocity (SV). In the activated carbon of the present invention, a pore volume A (cc/g) of pores with a size of 1.0 nm or less, of pore volumes calculated by the QSDFT method, is 0.300 cc/g or more, and elemental vanadium and/or a vanadium compound is contained.

IPC Classes  ?

• B01J 20/20 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbonSolid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising inorganic material comprising carbon obtained by carbonising processes
• B01J 20/30 - Processes for preparing, regenerating or reactivating
• C01B 32/336 - Preparation characterised by gaseous activating agents
• C02F 1/28 - Treatment of water, waste water, or sewage by sorption
• C02F 101/36 - Organic compounds containing halogen

Abstract

Activated carbon which has a high total trihalomethane filtration capacity even in water flow treatment at a high superficial velocity (SV) is provided. In this activated carbon, of the pore volume calculated by QSDFT, the pore volume A of pores with a diameter of less than or equal to 1.0 nm is greater than or equal to 0.3 cc/g, and, of the pore volume calculated by QSDFT, the pore volume B of pores with a diameter of 3.0-3.5 nm is greater than or equal to 0.009 cc/g.

IPC Classes  ?

• C01B 32/336 - Preparation characterised by gaseous activating agents
• B01J 20/20 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbonSolid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising inorganic material comprising carbon obtained by carbonising processes
• B01J 20/28 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof characterised by their form or physical properties
• B01J 20/30 - Processes for preparing, regenerating or reactivating
• C02F 1/28 - Treatment of water, waste water, or sewage by sorption
• D01F 9/15 - Carbon filamentsApparatus specially adapted for the manufacture thereof by decomposition of organic filaments from pitch or distillation residues from coal pitch

Abstract

Activated carbon with excellent equilibrium adsorption of dichloromethane is provided. In this activated carbon, of the pore volume calculated by QSDFT, the pore volume B (cc/g) of pores with a diameter of less than or equal to 1.5 nm is greater than or equal to 0.4 cc/g; of the pore volume calculated by QSDFT, the pore volume E (cc/g) of pores with a diameter of 0.65-1.0 nm is greater than or equal to 0.2 cc/g; further, of the pore volume calculated by QSDFT, the ratio (B/C) of the pore volume B to the pore volume C of pores with a diameter of less than or equal to 2.0 nm is 0.880-0.985.

IPC Classes  ?

• C01B 32/336 - Preparation characterised by gaseous activating agents
• B01J 20/20 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbonSolid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising inorganic material comprising carbon obtained by carbonising processes
• B01J 20/28 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof characterised by their form or physical properties
• D01F 9/15 - Carbon filamentsApparatus specially adapted for the manufacture thereof by decomposition of organic filaments from pitch or distillation residues from coal pitch

Abstract

Activated carbon which has a high total trihalomethane filtration capacity even in water flow treatment at a high superficial velocity (SV) is provided. In this activated carbon, of the pore volume calculated by QSDFT, the pore volume A (cc/g) of pores with a diameter of less than or equal to 1.0 nm is greater than or equal to 0.300 cc/g, and the activated carbon contains elemental vanadium and/or a vanadium compound.

IPC Classes  ?

• C01B 32/336 - Preparation characterised by gaseous activating agents
• B01J 20/20 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbonSolid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising inorganic material comprising carbon obtained by carbonising processes
• B01J 20/28 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof characterised by their form or physical properties
• C02F 1/28 - Treatment of water, waste water, or sewage by sorption
• D01F 9/15 - Carbon filamentsApparatus specially adapted for the manufacture thereof by decomposition of organic filaments from pitch or distillation residues from coal pitch

Abstract

Provided is a method for efficiently producing activated carbon having an increased proportion of extremely small-sized micropores 1 nm or less in diameter even among micropores 2 nm or less in diameter. This method for producing activated carbon includes an activation step that activates an activated carbon precursor containing a metal component by carbon dioxide gas as an introduction gas and obtains activated carbon having a ratio (pore volume B/total pore volume A) of the pore volume B 1.0 nm or less in diameter to the total pore volume A of 0.5 or higher, and the metal element that constitutes the metal component is selected from the group consisting of group 2 elements, group 3 elements, group 4 elements, group 5 elements, group 6 elements, group 7 elements, group 9 elements, and rare earth elements.

IPC Classes  ?

• C01B 32/336 - Preparation characterised by gaseous activating agents
• C01B 32/318 - Preparation characterised by the starting materials
• C01B 32/33 - Preparation characterised by the starting materials from distillation residues of coal or petroleumPreparation characterised by the starting materials from petroleum acid sludge

Abstract

Active carbon that has high total trihalomethane filtration capacity even in water pass-through treatment with a high superficial velocity (SV) is provided. Of the pore volume calculated by the QSDFT method, the pore volume A in this active carbon of pores with a diameter of less than or equal to 1.5 nm is 0.3-0.5 cc/g, and, of the pore volume calculated by the QSDFT method, the pore volume B of pores with a diameter in the range 1.5-2.5 nm is 0.03-0.12 cc/g.

IPC Classes  ?

• C01B 32/30 - Active carbon
• B01J 20/20 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbonSolid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising inorganic material comprising carbon obtained by carbonising processes
• B01J 20/28 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof characterised by their form or physical properties
• B01J 20/30 - Processes for preparing, regenerating or reactivating
• C02F 1/28 - Treatment of water, waste water, or sewage by sorption
• D01F 9/12 - Carbon filamentsApparatus specially adapted for the manufacture thereof

Abstract

Active carbon that has excellent dichloromethane absorption performance per unit of specific surface area is provided. Of the pore volume calculated by the QSDFT method, the pore volume A (cc/g) in this active carbon of pores less than or equal to 1.0 nm is greater than or equal to 0.35 cc/g, and, of the pore volume calculated by the QSDFT method, the pore volume B of pores with a pore diameter in the range 1.0-3.0 nm is 0.15-0.35 cc/g.

IPC Classes  ?

• C01B 32/30 - Active carbon
• B01J 20/20 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbonSolid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising inorganic material comprising carbon obtained by carbonising processes
• B01J 20/28 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof characterised by their form or physical properties
• B01J 20/30 - Processes for preparing, regenerating or reactivating