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Open Access Waste Reduction in Alkyl Pyridine Production: Solving the Root Problem Pays off

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The production process for 5-ethyl-2-methyl-pyridine (MEP) is the largest single source of total organic carbon and total nitrogen in the feed of the capacity-limited wastewater treatment plant at LONZA's major production site. According to LONZA's integrated waste treatment concept, efforts were made to reduce the amount of critical components in the MEP process wastewater. Detailed analysis of causes and effects revealed the formation of small amounts of ethylamines in the reaction unit as the root cause not only for the ecological but also for the economical problems such as high catalyst consumption and reduced MEP yield. Separation of interfering ethylamines from the process in combination with recycling of catalyst and catalyst byproduct-containing process water can solve all problems.

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Keywords: ALKYL PYRIDINES; CATALYSIS; ETHYLAMINES; GREEN CHEMISTRY; RECYCLING; SEPARATION; WASTE REDUCTION

Document Type: Research Article

Publication date: 01 September 2000

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  • International Journal for Chemistry and Official Membership Journal of the Swiss Chemical Society (SCS) and its Divisions

    CHIMIA, a scientific journal for chemistry in the broadest sense, is published 10 times a year and covers the interests of a wide and diverse readership. Contributions from all fields of chemistry and related areas are considered for publication in the form of Review Articles and Notes. A characteristic feature of CHIMIA are the thematic issues, each devoted to an area of great current significance.

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