发明名称 |
TREATED BOTTOM ASH MEDIUM AND METHOD OF ARSENIC REMOVAL FROM DRINKING WATER |
摘要 |
A method for low-cost arsenic removal from drinking water using chemically prepared bottom ash pre-treated with ferrous sulfate and then sodium hydroxide. Deposits on the surface of particles of bottom ash form of activated iron adsorbent with a high affinity for arsenic. In laboratory tests, a miniscule 5 grams of pre-treated bottom ash was sufficient to remove the arsenic from 2 liters of 2400 ppb (parts per billion) arsenic-laden water to a level below 50 ppb (the present United States Environmental Protection Agency limit). By increasing the amount of pre-treated bottom ash, even lower levels of post-treatment arsenic are expected. It is further expected that this invention supplies a very low-cost solution to arsenic poisoning for large population segments.
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申请公布号 |
US2009301971(A1) |
申请公布日期 |
2009.12.10 |
申请号 |
US20090467927 |
申请日期 |
2009.05.18 |
申请人 |
THE REGENTS OF THE UNIVERSITY OF CALIFORNIA |
发明人 |
GADGIL ASHOK |
分类号 |
B01D15/00;B01J20/02;B01J20/06;B01J20/32;C02F1/28 |
主分类号 |
B01D15/00 |
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