## 4 Conclusions  
In summary, the preparation of a novel composite media and its application in environmental remediation were investigated. Magnetite-decorated sulfate cellulose nanoparticles (MDSCNs) were successfully synthetized and characterized. Then, they were used as an efficient system for water remediation from amine pollutants. The obtained results showed that even with a small amount of adsorbent (100 mg), it was possible to reach adsorption percentages up to 90% for some aliphatic amines. These important achievements add another contribution to the environmental remediation of pollutants from anthropic impact, which is a matter that is a hot topic in environmental sciences. In this context, our material also proved to be easily recoverable thanks to its notable magnetic properties and, as future perspectives, further applications should be exploited to further explore the advantages that the derivative cellulose-based magnetic composite possessed. Among these, the use of smart liquid media with advanced properties [74; 75], such as enhanced or anti-Arrhenian conductivity or even response to a magnetic field, will certainly be tailored in light of synergetically coupling these properties with those of our nanoparticles for specific applications of ever-increasing added values.  
The following are available online at [[http://www.mdpi.com/2076-3417/10/22/8155/s1](http://www.mdpi.com/2076-3417/10/22/8155/s1)]([http://www.mdpi.com/2076-3417/10/22/8155/s1](http://www.mdpi.com/2076-3417/10/22/8155/s1)). Figure S1: IR spectra of Fe\({}_{3}\)O\({}_{4}\) nanoparticles; Figure S2: IR spectra of microcrystalline cellulose (MCC); Figure S3: IR spectra of sulfonated cellulose (SC); Figure S4: IR spectra of SC@Fe\({}_{3}\)O\({}_{4}\); Figure S5: IR spectra of sulfonated cellulose @ Fe\({}_{3}\)O\({}_{4}\) composite after absorption; Table S1: Assignment resume of the vibrational peaks; Figure S6: Piperidine calibration curve; Figure S7: _N,N_-Diisopropylethylamine calibration curve; Figure S8: 1,5-Dimethylhexylamine calibration curve; Figure S9: 2-Ethlyhexylamine calibration curve; Figure S10: Ctolylamine calibration curve; Figure S11: 4-Methyloxyplanamine calibration curve; Figure S12: Aniline calibration curve; Figure S13: _N_-Methylaniline calibration curve; Table S2: Peak data; Table S3: GC analytical method; Figure S16: Chromatogram of piperidine; Figure S17: Chromatogram of _N,N_-diisopropylethylamine; Figure S18: Chromatogram of 1,5-dimethylhexylamine; Figure S19: Chromatogram of 2-ethylhexylamine; Figure S20: Chromatogram of acylamine; Figure S21: Chromatogram of 4-methoxybenzylamine; Figure S22: Chromatogram of _N_-methylaniline; Figure S24: Chromatogram of 2,4-dimethylaniline; Figure S25: Chromatogram of \(N\),N_-diethylaniline.  
Conceptualization, A.D.N., L.M., M.A.T. and V.A.; methodology, M.A.T., V.A., F.O.; formal analysis, G.D.F., M.A.T., V.A.; investigation, A.D.N., L.M., P.C.; data curation, M.A.T., V.A., F.O.; writing--original draft preparation, L.M., M.A.T. and V.A.; writing--review and editing, A.D.N. and L.M.; supervision, A.D.N. and L.M.; funding acquisition, A.D.N., L.M., P.C. All authors have read and agreed to the published version of the manuscript.  
This research received no external funding.  
This research was supported by the project FOREST-COMP--CUP H56C18000080005--PON \"Ricerca e Innovazione 2014-2020\". University of Calabria and Calabria Region (PAC CALABRIA 2014-2020--Asse Prioritario 12, Azione B 10.5.12 CUP: H28D1900040006) are acknowledged for financial support.  
The authors declare no conflict of interest.