Back to results
US 2022/0176342 A1Published application
Adsorbent, heavy metal removing agent, molded body using same, and water purifier
AssigneeKuraray Co., Ltd.
InventorsShuji KAWASAKI, Shuji MATSUNAGA, Tetsuya HANAMOTO, Hiroe YOSHINOBU
Life of this patent
Estimating the term…
Abstract
An embodiment of the present invention relates to an adsorbent which contains a fine particle compound containing an aluminosilicate compound and activated carbon particles, wherein the fine particle compound containing an aluminosilicate compound has a specific surface area of 300 m2/g or more and an average particle size of 10 to 200 μm and includes particles having a particle size of 10 μm or less in volume particle size distribution at 10 volume % or less, and the activated carbon particles have a mode diameter of 0.06 to 0.6 mm.
Claims20
1:
- An adsorbent comprising:
- a fine particle compound (A) comprising an aluminosilicate compound;
- and
- activated carbon particles;
- wherein:
- the fine particle compound (A) has a specific surface area of 300 m2/g or more and an average particle size D50 of 3 to 200 μm;
- the fine particle compound (A) comprises particles having a particle size of 10 μm or less in a volume particle size distribution at 10 volume % or less;
- and
- the activated carbon particles have a mode diameter of 0.06 to 0.6 mm.
6 more elements
2:
- The adsorbent according to claim 1, wherein a ratio of silicon to aluminum as oxides (SiO2/Al2O3) in the aluminosilicate compound is 3 or less.
3:
- The adsorbent according to claim 1, wherein the fine particle compound (A) is resent in the adsorbent in an amount of 1 to 50 mass %.
4:
- An adsorbent comprising:
- a fine particle compound (B) comprising an aluminosilicate compound;
- a plastic powder;
- and
- activated carbon;
- wherein:
- the fine particle compound (B) and the plastic powder form composite aggregate particles;
- and
- the composite aggregate particles comprise particles having a particle size of 40 μm or less in a volume particle size distribution at 15 volume % or less.
6 more elements
5:
- The adsorbent according to claim 4, wherein:
- the fine particle compound (B) has a specific surface area of 300 m2/g or more and an average particle size D50 of 3 to 200 μm;
- and
- the fine particle compound (B) comprises particles having a particle size of 10 μm or less in a volume particle size distribution at 10 volume % or less.
1 more element
6:
- The adsorbent according to claim 4, wherein:
- the activated carbon comprises activated carbon particles;
- and
- the activated carbon particles have a mode diameter of 0.06 to 0.6 mm.
1 more element
7:
- The adsorbent according to claim 1, wherein an amount of aluminum eluted after 1 minute when a liquid passes through the adsorbent at a space velocity (SV) of 2300 hr−1 is less than 100 ppb.
8:
- A heavy metal removing agent comprising:
- a fine particle compound (B) comprising an aluminosilicate compound;
- and
- a plastic powder;
- wherein the heavy metal removing agent comprises particles having a particle size of 40 μm or less in a volume particle size distribution at 15 volume % or less.
2 more elements
9:
- The heavy metal removing agent according to claim 8, which has an average particle size of 50 μm to 1 mm.
10:
- The heavy metal removing agent according to claim 8, wherein:
- the fine particle compound (B) has a specific surface area of 300 m2/g or more and an average particle size D50 of 3 to 200 μm;
- and
- the fine particle compound (B) comprises particles having a particle size of 10 μm or less in a volume particle size distribution at 10 volume % or less.
1 more element
11:
- An adsorbent comprising the heavy metal removing agent according to claim 8 and activated carbon.
12:
- The adsorbent according to claim 11, wherein an amount of aluminum eluted after 1 minute when a proportion of the heavy metal removing agent in the adsorbent is set to 2 mass % and filtration is performed at a space velocity (SV) of 2300 hr−1 is less than 100 ppb.
13:
- The adsorbent according to claim 1, wherein the activated carbon particles comprise coconut shell activated carbon.
14:
- A molded body comprising the adsorbent according to claim 1.
15:
- A water purifier comprising the adsorbent according to claim 1.
16:
- The adsorbent according to claim 4, wherein an amount of aluminum eluted after 1 minute when a liquid passes through the adsorbent at a space velocity (SV) of 2300 hr−1 is less than 100 ppb.
17:
- The adsorbent according to claim 4, wherein the activated carbon comprises coconut shell activated carbon.
18:
- The adsorbent according to claim 11, wherein the activated carbon comprises coconut shell activated carbon.
19:
- A molded body comprising the adsorbent according to claim 4.
20:
- A molded body comprising the adsorbent according to claim 11.