Removal of Formaldehyde from Aqueous Solution byPolymeric Resin

Formaldehyde (HCHO) is the most common aldehyde in the environment. It is widely present inaquatic and air environment as one of environmental pollutants. It is commonly used formanufacturing building materials and various household products. Now, it has become a matter ofconcern because it is mutant andcarcinogenic, and an irritant to eyes and skin, therefore itsremoval from water is very important. Adsorption has an edge over the other techniquesdue to its simplicity, cost effectiveness, less time consuming and environmental friendlybehavior. In present study, adsorption efficiency of AmberliteIRA-910 has beenexamined. Relevant parameters such as pH, adsorbent dose, adsorbate concentration,shaking speed, volume and shaking time have beenstudied thoroughly. Ultraviolet-visiblespectroscopy was used to determine the formaldehyde content in the water. The isothermalstudy was carried out using the Langmuir, Freundlich and D-R isotherm. Results showed thatAmberliteIRA-910 has better adsorption efficiency forthe removal of formaldehyde at lower aswell as higher concentrations. The thermodynamic and kinetic parameters have also beencalculated.