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International Journal of Environment Science and Technology
Center for Environment and Energy Research and Studies (CEERS)
ISSN: 1735-1472 EISSN: 1735-1472
Vol. 12, No. 4, 2015, pp. 1321-1330
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Bioline Code: st15122
Full paper language: English
Document type: Research Article
Document available free of charge
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International Journal of Environment Science and Technology, Vol. 12, No. 4, 2015, pp. 1321-1330
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Comparison of air and steam stripping: removal of organic halogen compounds from process wastewaters
Toth, A.J. & Mizsey, P.
Abstract
In the engineering practice, there are two basic
alternatives of physicochemical treatment for the removal
of volatile compounds from process wastewaters: stripping
with air or stripping with steam. In this work, these alternatives
are investigated and compared in the case of a real
industrial problem that is typical for the fine chemical
industry and general conclusion is drawn. The removal of
the organically bound halogens, called adsorbable organically
bound halogens, is investigated. The two alternatives,
air and steam stripping, are first modeled in the professional
software environment of ASPEN Plus®. The model
is validated on the data of an existing air stripper for the
removal of organic halogens. Same organic halogens
removal is applied for the design of a steam stripper. It is
proved that the steam stripping shows better operability
and economic performance than the air stripping; moreover,
the volatile and/or adsorbable organically bound
halogen compounds can be recovered in the distillate and
they can be reused improving the sustainability.
Keywords
Adsorbable organically bound halogens; ASPEN Plus®; Cost estimation; Operability features; Pharmaceutical process wastewater; Stripping
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