This powerpoint presentation begins by providing a brief overview of perchlorate detection in water sources and ion exchange resins used for perchlorate removal.
The objective of this research was
to use microbial reduction to
regenerate resins contaminated
with perchlorate and nitrate, an environmentally
sustainable alternative to resin
"load and burn". Process description and experimental approach are provided, along with bioregeneration of perchlorate-selective
resin, Bioregeneration of Nitrate-selective
Resin, and Fouling Removal after
Bioregeneration. Presentation conclusions indicate that:
nitrate-selective ion exchange resin loaded
with nitrate and/or perchlorate can be
regenerated using a microbial enrichment
culture;
similar to nitrate-selective resin, spent
perchlorate-selective resin can also be
regenerated, thereby preventing "load and
burn" of resins; and,
resin fouling can be removed by several
fouling removal agents. Resin bioregeneration has several advantages, including:
converts perchlorate and nitrate to innocuous
chloride and nitrogen gas;
makes reuse of perchlorate/nitrate
contaminated ion exchange resin possible;
has the potential to reduce the cost of ion exchange
for water utilities;
technology is environmentally sustainable and
minimizes carbon dioxide emissions; and,
carbon credit can potentially be awarded to
water utilities that do not incineratee resin. Includes table, figures.
| Edition : | Vol. - No. |
| File Size : | 1
file
, 1.5 MB |
| Note : | This product is unavailable in Ukraine, Russia, Belarus |
| Number of Pages : | 24 |
| Published : | 11/01/2008 |
