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Title: Treated bottom ash medium and method of arsenic removal from drinking water

Abstract

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.

Inventors:
 [1]
  1. (El Cerrito, CA)
Publication Date:
Research Org.:
University of California
Sponsoring Org.:
USDOE
OSTI Identifier:
986751
Patent Number(s):
7,544,636
Application Number:
11/065,867; TRN: US201018%%70
Assignee:
The Regents of the University of California (Oakland, CA) OAK
DOE Contract Number:  
AC03-76SF00098
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; ADSORBENTS; ARSENIC; DRINKING WATER; IRON COMPOUNDS; REMOVAL; COST; ASHES; WASTE PRODUCT UTILIZATION

Citation Formats

Gadgil, Ashok. Treated bottom ash medium and method of arsenic removal from drinking water. United States: N. p., 2009. Web.
Gadgil, Ashok. Treated bottom ash medium and method of arsenic removal from drinking water. United States.
Gadgil, Ashok. Tue . "Treated bottom ash medium and method of arsenic removal from drinking water". United States. https://www.osti.gov/servlets/purl/986751.
@article{osti_986751,
title = {Treated bottom ash medium and method of arsenic removal from drinking water},
author = {Gadgil, Ashok},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2009},
month = {6}
}

Patent:

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