Na-rich birnessite (NRB) was synthesized by a simple synthesis method and used as a high-
efficiency adsorbent for the removal of ammonium ion (NH 4+) from aqueous solution. In …

Remediating aqueous solution contaminated by cobalt and strontium using synthetic
Birnessite was investigated. Birnessite structure and chemical properties were evaluated; …

Nanostructured Co-doped birnessites were successfully synthesized, and their application
for the removal of Pb2+ and As (III) from aquatic systems was investigated. Powder X-ray …

Co-containing birnessites were obtained by ion exchange at different initial concentrations
of Co2+. Ion exchange of Co2+ had little effect on birnessite crystal structure and …

The selective removal of 90 Sr from natural waters and technological effluents is an
important issue to ensure radiation safety. Manganese dioxide with layered structure was …

A modified inorganic bentonite (Na/Al) based on purified Ca-bentonite was prepared
through exchanging Al and Na ions in the interlayer space of Ca-bentonite. The structural …

Cetyltrimethylammonium modified birnessite (CTMA-birnessite) is prepared by a simple
hydrothermal method. The synthetic birnessite materials are characterized by a number of …

Sorption is an efficient process for transferring heavy metals from polluted water to solid
phase. Birnessite, which is a non-toxic layered manganese oxide, is particularly interesting …

A novel adsorbent, HO-CaBen, was prepared by the modification of bentonite, which shows
good potential as a cheap and effective adsorbent for anionic contaminants removal from …

Hydrous bismuth oxides (HBOs) have the sorptive property to remove nitrate from water.
HBOs are also efficient in removing other competitive anions like bicarbonates and sulfates …