Open AccessStudies on the Sorption Mechanism of Removing Nickel Ions from Model Waters by Cereal Grain Husks
Author(s) -
С. В. Степанова,
А. А. Алексеева,
L. O. Khafizova
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/720/1/012038
Subject(s) - sorption , freundlich equation , langmuir , adsorption , husk , nickel , ion , intermolecular force , chemistry , metal ions in aqueous solution , inorganic chemistry , molecule , analytical chemistry (journal) , environmental chemistry , organic chemistry , botany , biology
The study discusses the possibility of using cereals husks (barley, wheat and oats) as a sorption material for removing Ni 2+ ions from model waters. The article shows that the adsorption capacity at initial concentration of Ni 2+ ions of 17 mmol/dm3 reaches 1.1 mmol/g, and at concentration of 68 mmol/dm3 reaches 1.4 mmol/g. The built isotherms of Ni 2+ ions adsorption by cereal husks from model waters at a large correlation coefficient are described using the Langmuir model, but the same is observed (within the range from 0.83 to 0.98) in the Freundlich and Temkin models, which can also indicate multilayer sorption and intermolecular linear interaction between adsorbate molecules.