The use of waste poly(ethylene terephthalate) and phenol-formaldehyde resin for the preparation of activated carbons

Abstract

Zastosowanie odpadów poli(tereftalanu etylenu) lub ¿ywicy fenolowo-formaldehydowej do otrzymywania wêgli aktywnychStreszczenie -Przedstawiono wyniki badañ dotycz¹cych zastosowania odpadów poli(tereftalanu etylenu) lub ¿ywicy fenolowo-formaldehydowej w mieszaninie z pakiem wêglowym, do otrzymywania adsorbentów wêglowych. Sporz¹dzono kompozycje zawieraj¹ce pak wêglowy oraz odpad polimerowy w ilooeci 10-50 % mas. i oznaczono ich wybrane w³aoeciwooeci fizykochemiczne. Wytworzone kompozycje poddano karbonizacji i aktywacji par¹ wodn¹ lub wodorotlenkiem potasu. Okreoelono liczbê adsorpcji jodu (LJ), liczbê metylenow¹ (LM), powierzchniê w³aoeciw¹ (S BET ) oraz wytrzyma³ooeae mechaniczn¹ otrzymanych wêgli aktywnych. Oceniano tak¿e ich przydatnooeae w wybranych procesach adsorpcyjnych, np. do oczyszczania oecieków przemys³owych. S³owa kluczowe: poli(tereftalan etylenu), ¿ywica fenolowo-formaldehydowa, pak wêglowy, kompozycje polimerowo-pakowe, wêgiel aktywny. THE USE OF WASTE POLY(ETHYLENE TEREPHTHALATE) AND PHENOL-FORMALDE-HYDE RESIN FOR THE PREPARATION OF ACTIVATED CARBONSSummary -The results of studies investigating the use of waste poly(ethylene terephthalate) or phenol-formaldehyde resin in a composition with coal-tar pitch for the preparation of activated carbons have been presented. Polymer-pitch compositions containing 10-50 wt. % waste polymer were prepared and their selected physicochemical properties determined. The compositions were carbonized and activated with steam or potassium hydroxide. For the as-prepared activated carbons the iodine adsorption value (LJ), methylene number (LM), specific surface (S BET ) and mechanical properties were determined. The obtained activated carbons were also tested for applicability in selected adsorption processes, such as industrial wastewater treatment.

Preparation, characterization and application of polystyrene based activated carbons for Ni(II) removal from aqueous solution

“…Therefore, cheaper and common precursors as lignocellulosic biomasses have been widely tested for ACs preparation [1]. Recently, a large number of studies are dealing with the preparation of ACs from various polymeric wastes as well [2][3][4]. These materials are successfully used for the production of high yield of ACs characterized by low ash content, high adsorption capacity and considerable mechanical strength.…”

Thermo-rheological properties of coal-tar pitch modified with phenol-formaldehyde resin

“…Amounts of resin added to pitch were chosen based on previous tests [11]. Minimum 25% of phenol-formaldehyde resin by mass added to the pitch caused distinct changes in main physical and chemical properties in relation to unmodified pitch [11,12].…”

“…Modification of coal-tar pitch with unsaturated polyester resins leads to considerable plasticization, and such modified bitumens of significantly lower cancerogenicity can be used as binders with insulating and sealing properties. The coal-tar pitch with the addition of poly (ethylene terephthalate) or polycarbonate is characterized by increased thermal and mechanical resistance [10], and it can be used as a promotor of porous materials of great specific surface [11][12][13]. Thermal factor played a decisive role in all examinations.…”

The rheological properties of coal bitumens modified by polyesters. Rapid Communication

“…Modification of CTP with polyesters changes the group composition of CTP and its thermorheological properties. Research efforts suggest that CTP-polymer compositions can be used to obtain for example carbonaceous adsorbents [6][7][8] or an insulating and sealing material [9]. Modification of CTP with polymers allows utilization of waste plastics and low-quality CTP.…”