کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
870625 1471025 2015 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Comparison on structural modification of industrial lignin by wet ball milling and ionic liquid pretreatment
ترجمه فارسی عنوان
مقایسه تغییرات ساختاری لیگنین صنعتی با استفاده از دستگاه تراش مرطوب و پیش پردازش مایع یونی
کلمات کلیدی
لیگنین صنعتی، آسیاب توپ مرطوب پیشگیری از مایع یونی، پلیدرزایی، گروه های عاملی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی انرژی های تجدید پذیر، توسعه پایدار و محیط زیست
چکیده انگلیسی


• Two pretreatment methods were investigated to improve the quality of industrial lignin.
• ILP significantly reduced the average molecular weight and polydispersity of lignin.
• The methoxy group of lignin showed obviously decrease after ionic liquid pretreatment.
• ILP with [Emim][OAc] is an effective way to enhance the quality of industrial lignin.

As the most abundant aromatic compounds, lignin is still underutilized due to its relatively low quality. In order to improve its quality, two pretreatment technologies, wet ball milling (WBM) and ionic liquid pretreatment (ILP) were tested on the industrial lignin and evaluated on the average molecular weight and polydispersity, surface morphology, and functional groups changes. The results showed that the lignin pretreated by the WBM with phosphoric acid presented dramatic decrease of polydipersity (23%) and increase of phenolic hydroxyl content (9%). While, the ILP treated samples exhibited the significant reduction of the average molecular weight and polydispersity. The decrease on the particle size and the emergence of the porous structure were found when treated with [Emim][OAc]. In addition, the remarkable reduction of the methoxy groups were observed to be 50% and 45% after treated with [Bmim]Cl and [Emim][OAc], respectively.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Biotechnology Reports - Volume 6, June 2015, Pages 1–7
نویسندگان
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