Dynamics modeling of multicomponent metal ions’ removal onto low-cost buckwheat hulls

Abstract

The process of adsorption from water solutions containing a ternary system of Cu (II), Zn (II), and Ni (II) ions onto buckwheat hulls as a biosorbent was considered. The sorption capacity for buckwheat hulls was determined in sorption equilibrium batch experiments. The sorption kinetics equation corresponding to the mechanism of metal ions with the adsorbent was assumed. A new method for modeling sorption in a packed column was presented. A system of partial differential equations describing the mass balance, due to the assumption of a properly defined variable, was transformed into a system of ordinary nonlinear equations, which enables the identification of object parameters. The sorption capacity of the sorbent, sorption isotherms, and kinetics equations were used in dynamics modeling.

Developing new approaches and strategies to promote sustainability and environmental integration in the Mediterranean region

“…3. The Othmani et al (2020) Tomczak and Kaminski (2020). This study confirmed the fact that the ability of buckwheat hulls to remove heavy metal ions is in the following order: Cu (II) >> Ni (II) > Zn (II).…”

The Impact of Fiber from Buckwheat Hulls Waste on the Pasting, Rheological and Textural Properties of Normal and Waxy Potato Starch Gels

“…Recently, there has been increased interest in renewable by-products as promising raw materials that can be used in the production of a variety of food additives, chemicals, textiles, building materials, biotechnologies, and medicines because they are cheap and abundant agricultural bioproducts. The analytical characteristics of the buckwheat hemicelluloses show that they are a rich source of glucuronoxylan-type hemicelluloses (mainly composed of 4- o -methylglucuronoxylan) [ 8 , 9 , 11 , 12 , 13 , 14 ].…”

Application of Adsorption Thermodynamics and Column Studies for Pb2+, Cd2+ and Mn2+ Ions Removal in Multicomponents Model Solution Using Low-Cost Bentonite Clay Adsorbent

“…The model solution of each metal (lead, cadmium and manganese ions) was then mixed together in equal volume. In the multicomponent solution, the concentration of each of the cations in the mixture was the same[10,11]. The stock solution was diluted with distilled water to create the desired working solutions.…”