Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
REGENERATION OF ACTIVATED CARBONS EXHAUSTED WITH CHLOROPHENOLS
Autore:
FERROGARCIA MA; UTRERAHIDALGO E; RIVERAUTRILLA J; MORENOCASTILLA C; JOLY JP;
Indirizzi:
UNIV GRANADA,FAC CIENCIAS,DEPT QUIM INORGAN E-18071 GRANADA SPAIN UNIV GRANADA,FAC CIENCIAS,DEPT QUIM INORGAN E-18071 GRANADA SPAIN UNIV LYON 1,MAT & PROC CATALYT LAB F-69365 LYON 2 FRANCE
Titolo Testata:
Carbon
fascicolo: 6, volume: 31, anno: 1993,
pagine: 857 - 863
SICI:
0008-6223(1993)31:6<857:ROACEW>2.0.ZU;2-Z
Fonte:
ISI
Lingua:
ENG
Soggetto:
CHEMICAL REGENERATION; AQUEOUS-SOLUTIONS;
Keywords:
ACTIVATED CARBONS; CHEMICAL REGENERATION; THERMAL REGENERATION; CHLOROPHENOLS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
14
Recensione:
Indirizzi per estratti:
Citazione:
M.A. Ferrogarcia et al., "REGENERATION OF ACTIVATED CARBONS EXHAUSTED WITH CHLOROPHENOLS", Carbon, 31(6), 1993, pp. 857-863

Abstract

The regeneration of two activated carbons from olive stones used in the removal process of orthochlorophenol (OCP) and metachlorophenol (MCP) has been studied. Chemical regeneration was carried out with these organic solvents: acetone, methanol, ethanol, and benzene. The best regenerant solvent in both cases was ethanol. The regeneration was dependent on both the porosity of the carbon and the chlorophenol isomer; thus, OCP was extracted in greater quantities than MCP. Thermal regeneration was followed by both TGA and TPD-MS techniques, the spent activated carbons were heated up to 1073 and 1223 K, respectively, in an inert flow. The DTG curves showed two peaks at different temperatures corresponding to the removal of physisorbed (at the lowest temperature) and chemisorbed chlorophenol (at the highest temperature). The TPD-MS data indicate that the physisorbed fraction was removed in the form of chlorophenol and/or heavy degradation products; nevertheless, the chemisorbed fraction, together with some of the oxygen surface groups present on the activated carbons, suffered degradation reactions, giving light products such as: H2O, CO, CO2 and H-2. In the case of MCP, the degradation reactions took place to a greater extent due to a greater interaction with the activated carbon surface.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 05/07/20 alle ore 09:55:14