REMOVAL OF CHROME VI IONS IN WASTE WATER BY ADSORPTION ON ALMOND SHIRTS SUPPORTED WITH BARAKCI CLAY

Abstract

Wastewater is constantlyproduced in cities and it is sent towastewaterfacilities and accumulated. Thesewastewaterscontain Cr6+ions. Ifwastewater is not treated on time, it primarilyaffectsourhealth and ourenvironment. Because Cr6+ionsaretoxicsubstances.Inourexperimentalresearch, potassiumdichromate (K2Cr2O7) solutions at differentconcentrationswereaddedtoeachsolution at 298 K, 308 K, 318 K degrees, respectively, and 0.75 grams, glassmaker'sclay and 0.75 grams of almond bark shavingsperliter, and mixedwith a magneticstirrer. mixed. Absorbancemeasurementsweremade at 543 nm wavelengthbyusing UV-GB spectrophotometer of thesamplestaken at different time intervals. As thetemperature increased, theconcentration of 20 ppm potassiumdichromatewasdeterminedto be 68.65%, 66.7%, 80.20%, 298 K, 308 K and 318 K, respectively.Inthecalculatedisotherm data, 0.75 grams of glassmaker'sclay in 20 ppm 500 ml potassiumdichromatesolution at 298 K and 13.72 milligrams of Cr6+ion in 0.75 grams of almond bark sawdustadsorbed. Thesolutionambient PH wasadjustedto 6. Comparedwiththe Langmuir, Freundlich, isotherms, theadsorptionwasfoundto fit the Freundlich isothermbetter and thebestresultwas at 308 K with R2 = 0.9955. Whenthethermodynamicparametersarecalculated, ∆H, enthalpyvalueis -0.1105 kj/mol, ∆S, entropyvalue is 0.3504 kj/mol, ∆G, Gibbs freeenergyvaluesare at 298 K, -104.508 kj/mol, 308 K. -108,052 kj/mol, and -111.557 kj/mol at 318 K. Theresult of thisresearchshows us that a mixture of glassmaker'sclay and almond bark shavings can be used as filtration in theremoval of toxicCr6+ions in wastewater