Adsorption characteristics of phosphorus from aqueous solutions onto phosphate mine wastes

Removal of arsenic(III) from aqueous solution using a low-cost by-product in Fe-removal plants—Fe-based backwashing sludge

“…However, many of them are restricted for engineering application due to their high prices. Researchers have made efforts on the use of waste materials as low-cost adsorbents for the removal of pollutants from wastewater [4][5][6]. It has been widely recognized that the reuse of a waste material as low-cost adsorbent to remove As from wastewater could not only decrease the cost of wastewater treatment, but also reduce the amounts of these solid wastes.…”

Iranian Natural Red Soil and Its Modified Form with EDTA for Removal of Phosphorous from Aqueous Solution

“…In a side the solu- tion pH affect on the ionic species of target pollutants and on the other side change the surface charge of adsorbent by hydrogen ions and hydroxyl bombardment and will affect to removal process [13]- [15]. It can be considered in phosphorus case too.…”

Phosphate recovery from treated municipal wastewater using hybrid anion exchangers containing hydrated ferric oxide nanoparticles

“…Secondary sources such as municipal wastewater have long been thought to act as mineral deposits, and the recovery of phosphorus from them is valued and has increasingly been recognized as being a part of a more sustainable wastewater treatment process. Many methods have been investigated for phosphate removal from wastewater namely physical and coagulation methods, chemical precipitation by using ferric, calcium or aluminium salts, biological treatment and adsorption …”

“…Many methods have been investigated for phosphate removal from wastewater namely physical and coagulation methods, 4 chemical precipitation by using ferric, calcium or aluminium salts, 5 biological treatment 6 and adsorption. [7][8][9][10] However, chemical or biological processes currently being practised are no longer deemed adequate in meeting new discharge limits. For example, in the UK under the Water Framework Directive (WFD) phosphorus discharge limits are at 0.1 mg L -1 making conventional chemical/biological processes insufficient and thus creating the need for more efficient treatment methods.…”