摘要 : The excess of chemical fertilizer use in croplands has increased N and P losses in runoff to aquatic environments bringing in the serious contamination problem (especially eutrophication). Thus, it is a great challenge to develop ... 展开 The excess of chemical fertilizer use in croplands has increased N and P losses in runoff to aquatic environments bringing in the serious contamination problem (especially eutrophication). Thus, it is a great challenge to develop simple and environmentally friendly method to reduce the concentration of ammonium (NH4+) and phosphate (PO43-) in waterbody. Thus, it is a great challenge to develop a simple and environmentally friend method for the synthesis of calcium carbonate/montmorillonite (CCM) composite for simultaneous removal of ammoniumand phosphate. The synthesized CCM shows the different morphology from natural montmorillonite with flower-like crystalline. The batch experimental data suggest that the simultaneous adsorption isotherms of ammonium and phosphate by the synthesized CCM obey the monolayer Langmuir model. The simultaneous uptake amount of phosphate on the surface of CCM reaches the maximum at similar to 0.23 mmol/g, while ammonium reaches 0.15 mmol/g. 收起