Treatment of hydrochloric acid with magnesium-aluminum oxide at ambient temperatures

Tomohito Kameda, Toshiaki Yoshioka, Tatsunosuke Hoshi, Miho Uchida, Akitsugu Okuwaki

研究成果: Article査読

40 被引用数 (Scopus)

抄録

Our results demonstrate that magnesium-aluminum oxide (Mg-Al oxide) can be advantageous in treating hydrochloric acid waste at temperatures between 10 and 30 °C, by acting as both a neutralizer and fixative for Cl-. The Mg-Al oxide was prepared by the thermal decomposition of a hydrotalcite-like compound. The extent of Cl- removal by Mg-Al oxide increased with increases of temperature, oxide quantity and Mg/Al molar ratio. The initial pH had little effect on Cl- removal; the pH increased rapidly from the start of the reaction and attained a nearly constant value. The reaction involved in Cl- removal from HCl by Mg-Al oxide proceeded under surface chemical reaction control, with apparent activation energy of 65.6 kJ mol-1.

本文言語English
ページ(範囲)272-276
ページ数5
ジャーナルSeparation and Purification Technology
51
3
DOI
出版ステータスPublished - 2006 10

ASJC Scopus subject areas

  • 分析化学
  • ろ過および分離

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