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Nickel pollution of water induces several problems for the environment. The purpose of this paper was to investigate the adsorption of Ni2+ ions on fabricated biomembranes. The proposed adsorbent was prepared from epoxy and amino-functionalized waste cellulose fibers, able to participate in cross-linking with amino acid lysine - wCell/Mn-Fe_LDH. The prepared material underwent preliminary structural characterization by Fourier-transform infrared spectroscopy. In a batch system, the influence of pH, contact time, temperature, and initial concentration on adsorption efficiency was investigated. The effectiveness of the membrane was demonstrated by acceptable adsorption capacities of 40.49 mg g-1 obtained for Ni2+ at 45°C. The kinetic study, using the Weber-Morris model, indicates intraparticle diffusion as the rate limiting step. Adsorption mechanism physisorption was proposed based on thermodynamic behaviors. The outcomes demonstrated that environmentally friendly sustainable technology has been successfully developed.

Nickel pollution of water induces several problems for the environment. The purpose of this paper was toinvestigate the adsorption of Ni2+ ions on fabricated biomembranes. The proposed adsorbent was preparedfrom epoxy and amino-functionalized waste cellulose fibers, able to participate in cross-linking with aminoacid lysine - wCell/Mn-Fe_LDH. The prepared material underwent preliminary structural characterizationby Fourier-transform infrared spectroscopy. In a batch system, the influence of pH, contact time,temperature, and initial concentration on adsorption efficiency was investigated. The effectiveness of themembrane was demonstrated by acceptable adsorption capacities of 40.49 mg g-1 obtained for Ni2+ at 45°C.The kinetic study, using the Weber-Morris model, indicates intraparticle diffusion as the rate limiting step.Adsorption mechanism physisorption was proposed based on thermodynamic behaviors. The outcomesdemonstrated that environmentally friendly sustainable technology has been successfully developed.