Decontaminant, carbon/polymer composite, decontamination sheet member and filter medium

A decontaminant for an aqueous solution, the decontaminant comprising:

• a porous carbon material comprising meso fine pores having a pore diameter from 2 nm to 50 nm, micro fine pores having a pore diameter smaller than 2 nm, and macro fine pores having a pore diameter exceeding 50 nm, the porous carbon material having a value of a specific surface area based on a nitrogen BET method of 1×102 m2/g or more, a total of volumes of fine pores having a diameter of from 1×10−9 m to 5×10−7 m, obtained by a non-localized density functional theory method, of 1.0 cm3/g or more, a volume of macro, meso, and micro fine pores by mercury porosimetry of 1.5 cm3/g or more, and a bulk density of 0.1 g/cm3 or more to 0.8 g/cm3 or less, and having a plant containing at least one component selected from the group consisting of sodium, magnesium, potassium and calcium as a raw material, and having a particle size distribution consisting of a first particle size range of 0.50 mm to 0.85 mm;
• and a second particle size range of 0.85 to 1.7 mm, wherein the first particle size range is at a greater particle size distribution percentage as compared to the second particle size range.

A decontaminant for an aqueous solution, the decontaminant comprising:

• a porous carbon material comprising meso fine pores having a pore diameter from 2 nm to 50 nm, micro fine pores having a pore diameter smaller than 2 nm, and macro fine pores having a pore diameter exceeding 50 nm, the porous carbon material having a value of a specific surface area based on a nitrogen BET method of 1×102 m2/g or more, having at least one peak in the range of 3 nm to 20 nm, in a pore diameter distribution obtained by a non-localized density functional theory method, in which a ratio of a total of volumes of fine pores that have pore diameters in the range of 3 nm to 20 nm, with respect to a sum total of volumes of all fine pores, is 0.2 or more, a volume of macro, meso, and micro fine pores by mercury porosimetry of 1.5 cm3/g or more, and a bulk density of 0.1 g/cm3 or more to 0.8 g/cm3 or less, and having a plant containing at least one component selected from the group consisting of sodium, magnesium, potassium and calcium as a raw material, and having a particle size distribution consisting of a first particle size range of 0.50 mm to 0.85 mm;
• and a second particle size range of 0.85 to 1.7 mm, wherein the first particle size range is at a greater particle size distribution percentage as compared to the second particle size range.

A decontaminant for an aqueous solution, the decontaminant comprising:

• a porous carbon material comprising meso fine pores having a pore diameter from 2 nm to 50 nm, micro fine pores having a pore diameter smaller than 2 nm, and macro fine pores having a pore diameter exceeding 50 nm, the porous carbon material having a value of a specific surface area based on a nitrogen BET method of 1×102 m2/g or more, a volume of macro, meso, and micro fine pores by mercury porosimetry of 1.5 cm3/g, and a bulk density of 0.1 g/cm3 or more to 0.8 g/cm3 or less, and having a particle size distribution consisting of a first particle size range of 0.50 mm to 0.85 mm;
• and a second particle size range of 0.85 to 1.7 mm, wherein the first particle size range is at a greater particle size distribution percentage as compared to the second particle size range.

A filter medium for removing a contaminant in an aqueous solution, the filter medium comprising:

• a porous carbon material comprising meso fine pores having a pore diameter from 2 nm to 50 nm, micro fine pores having a pore diameter smaller than 2 nm, and macro fine pores having a pore diameter exceeding 50 nm, the porous carbon material having a value of a specific surface area based on a nitrogen BET method of 1×102 m2/g or more, a volume of meso and macro fine pores based on a BJH method of 0.1 cm3/g or more, a volume of macro, meso, and micro fine pores by mercury porosimetry of 1.5 cm3/g or more, and a bulk density of 0.1 g/cm′ or more to 0.8 g/cm3 or less, and having a plant containing at least one component selected from the group consisting of sodium, magnesium, potassium and calcium as a raw material, and having a particle size distribution consisting of a first particle size range of 0.50 mm to 0.85 mm;
• and a second particle size range of 0.85 to 1.7 mm, wherein the first particle size range is at a greater particle size distribution percentage as compared to the second particle size range.

A filter medium for removing a contaminant in an aqueous solution, the filter medium comprising:

• a porous carbon material comprising meso fine pores having a pore diameter from 2 nm to 50 nm, micro fine pores having a pore diameter smaller than 2 nm, and macro fine pores having a pore diameter exceeding 50 nm, the porous carbon material having a value of a specific surface area based on a nitrogen BET method of 1×102 m2/g or more, a total of volumes of fine pores having a diameter of from 1×10−9 m to 5×10−7 m, obtained by a non-localized density functional theory method, of 1.0 cm3/g or more, a volume of macro, meso, and micro fine pores by mercury porosimetry of 1.5 cm3/g or more, and a bulk density of 0.1 g/cm′ or more to 0.8 g/cm3 or less, and having a plant containing at least one component selected from the group consisting of sodium, magnesium, potassium and calcium as a raw material, and having a particle size distribution consisting of a first particle size range of 0.50 mm to 0.85 mm;
• and a second particle size range of 0.85 to 1.7 mm, wherein the first particle size range is at a greater particle size distribution percentage as compared to the second particle size range.

A filter medium for removing a contaminant in an aqueous solution, the filter medium comprising:

• a porous carbon material comprising meso fine pores having a pore diameter from 2 nm to 50 nm, micro fine pores having a pore diameter smaller than 2 nm, and macro fine pores having a pore diameter exceeding 50 nm, the porous carbon material having a value of a specific surface area based on a nitrogen BET method of 1×102 m2/g or more, having at least one peak in the range of 3 nm to 20 nm, in a pore diameter distribution obtained by a non-localized density functional theory method, in which a ratio of a total of volumes of fine pores that have pore diameters in the range of 3 nm to 20 nm, with respect to a sum total of volumes of all fine pores, is 0.2 or more, a volume of macro, meso, and micro fine pores by mercury porosimetry of 1.5 cm3/g or more, and a bulk density of 0.1 g/cm′ or more to 0.8 g/cm3 or less, and having a plant containing at least one component selected from the group consisting of sodium, magnesium, potassium and calcium as a raw material, and having a particle size distribution consisting of a first particle size range of 0.50 mm to 0.85 mm;
• and a second particle size range of 0.85 to 1.7 mm, wherein the first particle size range is at a greater particle size distribution percentage as compared to the second particle size range.

A filter medium for removing a contaminant in an aqueous solution, the filter medium comprising:

• a porous carbon material comprising meso fine pores having a pore diameter from 2 nm to 50 nm, micro fine pores having a pore diameter smaller than 2 nm, and macro fine pores having a pore diameter exceeding 50 nm, the porous carbon material having a value of a specific surface area based on a nitrogen BET method of 1×102 m2/g or more, a volume of macro, meso, and micro fine pores by mercury porosimetry of 1.5 cm3/g or more, and a bulk density of 0.1 g/cm′ or more to 0.8 g/cm3 or less, and having a plant containing at least one component selected from the group consisting of sodium, magnesium, potassium and calcium as a raw material, and having a particle size distribution consisting of a first particle size range of 0.50 mm to 0.85 mm;
• and a second particle size range of 0.85 to 1.7 mm, wherein the first particle size range is at a greater particle size distribution percentage as compared to the second particle size range.