01637nab a2200205 4500 20260520000817.0 260224s2009 xxu Biodegradable polymer for demulsification of water-in-bitumen emulsions ene. 2009 15/05/2009 ; 20/04/2009 7 p. ; 451-456 Transcripción del resúmen publicado por el autor: Removal of residual water from a solvent-diluted bitumen is a challenging task because the water drops, in the emulsified form of a few micrometers, are extremely stable. A nontoxic and biodegradable polymer, ethylcellulose, was used to break up emulsified water from naphtha-diluted bitumen. It was found that the ethylcellulose polymer at 130 ppm dosage removed up to 90% of the emulsified water in the diluted bitumen by gravity settling after 1 h at 80 °C. The tests, extended to bitumen froth containing about 10% solids by weight, showed a 90% removal of the water in the diluted bitumen froth. The addition of ethylcellulose also assisted the removal of fine solids with the water. However, for bitumen froths containing 30% or more solids, the efficiency of water removal by ethylcellulose addition was found to be less effective. Micrographic images revealed that ethylcellulose broke up the water-in-bitumen emulsions by flocculation and coalescence. Energy & fuels 23 ARTICULO Feng, Xianhua 40958 Xu, Zhenghe 34530 Masliyah, Jacob 19071 169605 169605 http://pubs.acs.org/doi/full/10.1021/ef800825n 0 0 0 0 237424 BVIAPG BVIAPG 2026-03-05 200044408 0 200044408 2026-03-05 15:11:50 2026-03-05 ARTICULO