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Vapour-liquid partition of volatile organic compounds in kraft black liquors

Olsson, J; Wessman, David LU and Zacchi, Guido LU (2000) In Nordic Pulp & Paper Research Journal 15(4). p.266-274
Abstract
The vapour-liquid partition of various VOC (Volatile Organic Compounds) in a number of industrial black liquors was investigated. The information can be used to determine the distribution of VOC in different condensate and gas streams in a kraft mill. Batchwise evaporation of weak black liquors was performed on a lab scale. The evaporation was carried out at atmospheric pressure up to over 90% dry solids content. During evaporation, condensate samples were collected and analysed with respect to 15 compounds, total organic carbon (TOC), chemical oxygen demand (COD) and pH. The study resulted in concentration profiles of various VOC in the vapour (condensate) during evaporation. An increase in concentrations of total reduced sulphur... (More)
The vapour-liquid partition of various VOC (Volatile Organic Compounds) in a number of industrial black liquors was investigated. The information can be used to determine the distribution of VOC in different condensate and gas streams in a kraft mill. Batchwise evaporation of weak black liquors was performed on a lab scale. The evaporation was carried out at atmospheric pressure up to over 90% dry solids content. During evaporation, condensate samples were collected and analysed with respect to 15 compounds, total organic carbon (TOC), chemical oxygen demand (COD) and pH. The study resulted in concentration profiles of various VOC in the vapour (condensate) during evaporation. An increase in concentrations of total reduced sulphur compounds (TRS), ammonia, methanol and guaiacol at high dry solids content indicated a chemical degradation of the liquor. The condensates with the lowest TOC and COD levels were obtained for a dry solid content of 30-40 wt-% regardless of the original dry solids content in the black liquor. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
volatile organic compounds, kraft black liquor, condensate, vapour-liquid equilibria, evaporation, methanol, sulphur compounds, ammonia, guaiacol
in
Nordic Pulp & Paper Research Journal
volume
15
issue
4
pages
266 - 274
publisher
Arbor Publishing AB
external identifiers
  • wos:000166019400002
  • scopus:0034498531
ISSN
0283-2631
language
English
LU publication?
yes
id
1d883587-b249-4844-a733-058ad9252079 (old id 3911390)
date added to LUP
2013-06-28 14:30:46
date last changed
2017-01-01 07:13:59
@article{1d883587-b249-4844-a733-058ad9252079,
  abstract     = {The vapour-liquid partition of various VOC (Volatile Organic Compounds) in a number of industrial black liquors was investigated. The information can be used to determine the distribution of VOC in different condensate and gas streams in a kraft mill. Batchwise evaporation of weak black liquors was performed on a lab scale. The evaporation was carried out at atmospheric pressure up to over 90% dry solids content. During evaporation, condensate samples were collected and analysed with respect to 15 compounds, total organic carbon (TOC), chemical oxygen demand (COD) and pH. The study resulted in concentration profiles of various VOC in the vapour (condensate) during evaporation. An increase in concentrations of total reduced sulphur compounds (TRS), ammonia, methanol and guaiacol at high dry solids content indicated a chemical degradation of the liquor. The condensates with the lowest TOC and COD levels were obtained for a dry solid content of 30-40 wt-% regardless of the original dry solids content in the black liquor.},
  author       = {Olsson, J and Wessman, David and Zacchi, Guido},
  issn         = {0283-2631},
  keyword      = {volatile organic compounds,kraft black liquor,condensate,vapour-liquid equilibria,evaporation,methanol,sulphur compounds,ammonia,guaiacol},
  language     = {eng},
  number       = {4},
  pages        = {266--274},
  publisher    = {Arbor Publishing AB},
  series       = {Nordic Pulp & Paper Research Journal},
  title        = {Vapour-liquid partition of volatile organic compounds in kraft black liquors},
  volume       = {15},
  year         = {2000},
}