کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4415341 1307743 2007 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Recovery and characterization of the humate-like salified polymeric organic fraction (lignimerin) from Kraft cellulose mill wastewater
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم محیط زیست شیمی زیست محیطی
پیش نمایش صفحه اول مقاله
Recovery and characterization of the humate-like salified polymeric organic fraction (lignimerin) from Kraft cellulose mill wastewater
چکیده انگلیسی

A dark and complex salified organic polymeric mixture, named lignimerin, was for the first time recovered from Kraft cellulose mill wastewater (KCMW) and characterized by chemical, spectroscopic and relative molecular weight (RMW) analysis. Lignimerin proved to be composed of polyphenols (57.00%), carbohydrates (22.26%) and proteins (7.42%). It also contained metals (6.93%), mainly Ca and, to much lower extent, Mg, Na, Al, Fe, K, Mn, Zn and Cu, bound to the carboxylate and phenate groups. The distribution of lignimerin RMW was assessed to be approximately between 1000 and 8600 Da, as well as to consist of lignin and tannin, protein and polysaccharide moieties, strongly aggregated each other. H-lignimerin, its acid derivative, revealed a chemical composition and a RMW distribution very close to that of lignimerin, but a marked metal cations decreasing (1.60%) with respect to lignimerin (6.93%). The humic acid-like nature of both the polymers was assessed. Their potential use as bio-adsorbents of heavy metals is briefly discussed.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemosphere - Volume 68, Issue 9, August 2007, Pages 1798–1805
نویسندگان
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