직/편성물 염색

recovery of caustic soda from caustic effluents

  • 출판일1999.03
  • 저자
  • 서지사항
  • 등록일 2016.11.02
  • 조회수 301
an economically viable treatment sequence has been developed and piloted at two textile factories for the recovery and reuse of water, chemicals and heat energy from sodium hydroxide effluent produced during the scouring of cotton fibre. the treatment sequence involves pretreatment of the scour effluent by neutralisation, using an acidic gas, cross-flow microfiltration and charged membrane ultrafiltration (also called nanofiltration). the sodium hydroxide is then recovered in an electrochemical cell with the simultaneous evolution of acidic gas which is recycled within the treatment process. two possible configurations of the treatment process, where the acidic gas is either chlorine or carbon dioxide, are discussed (edited author abstract) 11 refs
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