Studies on adsorption of formaldehyde in zirconium phosphate–glyphosates

In our previous work [22] , a kind of layered compound of zirconium phosphate–glyphosate (ZrGP) was synthesized. Its large surface area (445 m2/g) indicates this compound has possible application in adsorptions. In this paper, adsorption to formaldehyde in ZrGP and mechanisms of the adsorption were studied carefully. Balance time of adsorption (about 6 h) and largest adsorbed amount (7.8%) were found when adsorption temperature was at 40 °C and pH value of adsorption environment was about 3.0. H-bonds were found existing between molecules of formaldehyde and ZrGP, and formaldehyde molecules could exist in ZrGP stably.