Synthesis of polyamino styrene from post-consumption expanded polystyrene and analysis of its CO 2 scavenger capacity
- PDF / 1,439,748 Bytes
- 14 Pages / 595.276 x 790.866 pts Page_size
- 6 Downloads / 151 Views
ORIGINAL PAPER
Synthesis of polyamino styrene from post‑consumption expanded polystyrene and analysis of its CO2 scavenger capacity D. R. Merchán‑Arenas1,2 · A. F. Murcia‑Patiño1,2 Received: 19 November 2019 / Revised: 11 August 2020 / Accepted: 31 October 2020 © Islamic Azad University (IAU) 2020
Abstract In this research, a sample of expanded polystyrene (EPS) was isolated from a whole solid waste amount as raw material, the synthesis of polyamino styrene (PSNH2) was done in a two-step process. Initially, it was carried out the nitration of PS to obtain polynitro styrene (PSNO2) in 10.18% of nitration’s efficiency. Afterward, the P SNO2 was reduced under HCl/Sn conditions in order to obtain the P SNH2 in 50% of yield taking into account the reduction of N O2 groups from P SNO2. The raw material, intermediary and the final product were completely characterized by chemical analytical techniques. With the new material in hands, it was used as a solid support in the CO2 capture process, showing an adsorption capacity of 1.05 mmol g−1 of PSNH2. Keywords Expanded polystyrene · CO2 adsorption · Solid waste · Polyamino styrene · Polynitro styrene Nomenclature °C Celsius degree 1 H-NMR Proton nuclear magnetic resonance Ar Aromatic As Asymmetric BET Brunauer–Emmett–Teller C Carbon C Thickness of adsorbed layer CH4 Methane cm3 Cubic centimeter CW Carbonated water DCE Dichloroethane DMCHA N,N′-Dimethyl cyclohexylamine DMF N,N′-Dimethylformamide EPS Expanded polystyrene FTIR Fourier transformed infrared g Gram Editorial responsibility: Gobinath Ravindran. * D. R. Merchán‑Arenas [email protected] 1
Laboratorio de Química Orgánica Aplicada, Universidad Manuela Beltrán, Calle 33 # 27‑12, 680002 Bucaramanga, Colombia
Maestría en Ciencias y Tecnologías Ambientales, Universidad Santo Tomás, Carrera 27 # 180‑395, 681003 Floridablanca, Colombia
2
GHG Greenhouse gases GtCO2 Gigatons of carbon dioxide h Hour H Hydrogen H2CO3 Carbonic acid H2O Water H2SO4 Sulfuric acid HCl Hydrochloric acid HCO3 Bicarbonate HNO3 Nitric acid K Langmuir constant K1 Pseudo-first-order constant K2 Pseudo-second-order constant Kf Freundlich constant KOH Potassium hydroxide LCAS Low-cost adsorbent solids mL Milliliter mmHg Millimeters of mercury mmol g−1 Millimole per gram MOF Metal–organic frameworks MtCO2 Megatons of carbon dioxide N2 Nitrogen NH2 Amino groups NH3 Ammonia NO2 Nitro groups O Oxygen P Pressure Pa Pascal
13
Vol.:(0123456789)
International Journal of Environmental Science and Technology
ppm Parts per million PVC Poly vinyl chloride qe Adsorption capacity in equilibrium qt Adsorption capacity in any time R2 Correlation coefficient SEM–EDS Scanning electron microscopy with energy dispersion spectrometry SHS Switchable hydrophilicity solvent Sn Tin Sym Symmetric t Time TGA Thermogravimetric analysis VPS Virgin polystyrene wt Weight α Rate of initial adsorption β Superficial extension that is covered and the activation energy of the process µm Micr
Data Loading...
