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- W2063172364 abstract "During the last two decades, an increased interest has been shown in trace elements in water. Metals trace play an important part in the natural geochemical cycles in water. The natural cycles are also affected by metals, particularly in the industrialised part of the world. The requirement for a world with minimum pollution has brought about the need for clean technologies in industrial production. A way to accomplish this could be the recovery and recycling of substances not used in industrial cycles. Chromium is an important material used in a number of industries. It finds use in stainless and alloy steels, pigments, tanning agents. In environmental samples, chromium mainly occurs as chromium (III) or chromium (VI). Chromium (III), which is an essential trace element, is not toxic. In contrast, chromium (VI) is highly carcinogenic and mutagenic. Therefore, it is necessary for risk assessment to determine chromium in its oxidation state (VI) and to concentrate it in order to recycle. For this purpose many different methods have been described: ultrafiltration, ion exchange resin, supported liquid membranes [1]. In this work a method using a liquid membrane is described. Results obtained in continuous flow are presented." @default.
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- W2063172364 date "2002-09-01" @default.
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- W2063172364 title "Recovery of chromique ions from aqueous effluents by liquid membrane in continuous mode" @default.
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- W2063172364 doi "https://doi.org/10.1016/s0011-9164(02)00316-8" @default.
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