Analysis of the features of model waters purification from copper and nickel ions by heat-treated cellulose-containing material

Adsorption is known as one of the traditional wastewater treatment methods, which is considered effective against heavy metals. At present, plant wastes are often studied as a raw material for inexpensive sorbents obtaining. The article analyzes the effectiveness of a sorption material use obtained by cellulose-containing waste thermal modification in relation to copper and nickel ions. It was established that sorption has a physical character, the maximum sorption capacity for Cu2+ ions was 0.320 mmol/g, for Nu2+ ions 0.342 mmol/g. The processing of the isotherm using the mathematical models of Langmuir and Freindlich indicates the phenomena of multilayer adsorption on a material that has various active sorption centers with unequal energies.