Characterisation of Kraft lignin separated by gradient acid precipitation

被引:127
作者
dos Santos, Patricia S. B. [1 ]
Erdocia, Xabier [1 ]
Gatto, Darci A. [2 ]
Labidi, Jalel [1 ]
机构
[1] Univ Basque Country, Environm & Chem Engn Dept, San Sebastian 20018, Spain
[2] Univ Fed Pelotas, Coll Mat Engn PPGCEM, BR-96010000 Pelotas, RS, Brazil
关键词
Black liquor; Lignin; Precipitation; Acid; Properties; ANTIOXIDANT CAPACITY; ASSAYS;
D O I
10.1016/j.indcrop.2014.01.023
中图分类号
S2 [农业工程];
学科分类号
0828 ;
摘要
Lignin is considered the second most abundant organic natural compound in the world. Lignin represents a promising source of new materials based on renewable resources. Currently the lignin is used in low value-added applications and for energy production and chemical recycling for industrial process itself in production of pulp and paper. Only a small amount is being used for other applications. The aim of this study was to analyze the effects of precipitation on the composition of lignin extracted from black liquor produced in industry CMPC Celulose Riograndense. For this, lignins were precipitated at different pH conditions, with various acids. Obtained lignin samples were characterized by various analytical techniques such as FTIR, GPC, HPLC and XRD. Furthermore, the quantity of carboxyl groups was also analyzed. The antioxidant activity of the analyzed lignins was evaluated by the radical ABTS (2,2'-azino-bis(3-ethylbenzothiazoline-6-sulphonic acid) assay. Total phenolic contain was evaluated by Folin-Ciocalteu method while the antioxidant potential of lignins was measured by DPPH. The lignins showed a variable composition according to the acid used for its precipitation; the lignin precipitated with sulphuric acid presented Na2SO4 salts while with hydrochloric acid, NaCl was found. In addition, a change in lignin composition was observed at different pH. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码:149 / 154
页数:6
相关论文
共 28 条
[1]  
[Anonymous], BIOCH ENG J, V67, P173
[2]   Fractionation of technical lignins as a tool for improvement of their antioxidant properties [J].
Arshanitsa, Alexander ;
Ponomarenko, Jevgenija ;
Dizhbite, Tatiana ;
Andersone, Anna ;
Gosselink, Richard J. A. ;
van der Putten, Jacinta ;
Lauberts, Mans ;
Telysheva, Galina .
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS, 2013, 103 :78-85
[3]   Characterisation of structure-dependent functional properties of lignin with infrared spectroscopy [J].
Boeriu, CG ;
Bravo, D ;
Gosselink, RJA ;
van Dam, JEG .
INDUSTRIAL CROPS AND PRODUCTS, 2004, 20 (02) :205-218
[4]   Lignin in straw of herbaceous crops [J].
Buranov, Anvar U. ;
Mazza, G. .
INDUSTRIAL CROPS AND PRODUCTS, 2008, 28 (03) :237-259
[5]   Effect of thermal treatment on physicochemical properties of Gympie messmate wood [J].
Cademartori, Pedro Henrique G. ;
dos Santos, Patricia S. B. ;
Serrano, Luis ;
Labidi, Jalel ;
Gatto, Darci A. .
INDUSTRIAL CROPS AND PRODUCTS, 2013, 45 :360-366
[6]   Characterization of the radical scavenging activity of lignins - natural antioxidants [J].
Dizhbite, T ;
Telysheva, G ;
Jurkjane, V ;
Viesturs, U .
BIORESOURCE TECHNOLOGY, 2004, 95 (03) :309-317
[7]   Antioxidant Activity of Lignin Phenolic Compounds Extracted from Kraft and Sulphite Black Liquors [J].
Faustino, Helio ;
Gil, Nuno ;
Baptista, Cecilia ;
Duarte, Ana Paula .
MOLECULES, 2010, 15 (12) :9308-9322
[8]   Characterization of lignins obtained by selective precipitation [J].
Garcia, A. ;
Toledano, A. ;
Serrano, L. ;
Eguees, I. ;
Gonzalez, M. ;
Marin, F. ;
Labidi, J. .
SEPARATION AND PURIFICATION TECHNOLOGY, 2009, 68 (02) :193-198
[9]   Study of the antioxidant capacity of Miscanthus sinensis lignins [J].
Garcia, Araceli ;
Toledano, Ana ;
Angeles Andres, Maria ;
Labidi, Jalel .
PROCESS BIOCHEMISTRY, 2010, 45 (06) :935-940
[10]   Towards a new concept of lignin condensation in kraft pulping. Initial results [J].
Gellerstedt, G ;
Majtnerova, A ;
Zhang, L .
COMPTES RENDUS BIOLOGIES, 2004, 327 (9-10) :817-826