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Original Article | Open Access

Influence of Chemical Pretreatment on the Dissolved Organics in Poplar Alkaline Peroxide Mechanical Pulping Effluent

XinYu Wang1, JiaChuan Chen2( ), HongLei Chen2, Lucian A. Lucia2,3, GuiHua Yang2, Qin Wu2
Key Laboratory of Beibu Gulf Environment Change and Resources Utilization, Guangxi Teachers Education University, Nanning, Guangxi Zhuang Autonomous Region, 530001, China
Key Laboratory of Pulp & Paper Science and Technology of the Ministry of Education, Qilu University of Technology, Ji'nan, Shandong Province, 250353, China
Laboratory of Soft Materials & Green Chemistry, Departments of Forest Biomaterials and Chemistry, North Carolina State University, Raleigh, 27695, USA
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Abstract

The components of the effluent from the chemical pretreatment of poplar alkaline peroxide mechanical pulp(APMP) were analyzed in this study. The main dissolved organics were low-molecular weight(LMW) lignin, oligosaccharides, and monosaccharides. The lignin and sugar concentrations in the effluent obtained using different chemical pretreatment conditions and chemical dosages were analyzed using ultraviolet(UV) spectroscopy. This analysis provided a theoretical basis for the subsequent treatment and utilization of APMP effluent. The experimental results showed that the dosages of NaOH, H2O2, and Na2SiO3 in the chemical pretreatment process affected the lignin and sugar concentrations in the effluent and that different chemicals had differing degrees of influence. The degree of influence exhibited the following order: NaOH > H2O2 > Na2SiO3. More specifically, the dosages of NaOH and H2O2 had stronger influences on the lignin and sugar concentrations than that of Na2SiO3. Indeed, the Na2SiO3 dosage hardly affected the lignin and sugar concentrations in the effluent, but Na2SiO3 could stabilize the chemical pretreatment system and improve the reactive efficiency of NaOH and H2O2. The pretreatment temperature and time also affected the organic components, and the influence of the temperature was stronger than that of time.

Keywords

ligninpretreatmentpoplarAPMP effluentoligosaccharides

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Paper and Biomaterials
Volume 2 Issue 1,
January 2017
Pages 32-39
DOI: 10.26599/PBM.2017.9260005
Cite this article:
Wang X, Chen J, Chen H, et al. Influence of Chemical Pretreatment on the Dissolved Organics in Poplar Alkaline Peroxide Mechanical Pulping Effluent. Paper and Biomaterials, 2017, 2(1): 32-39. https://doi.org/10.26599/PBM.2017.9260005

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Received: 20 September 2016
Accepted: 24 October 2016
Published: 25 January 2017
© 2017 Paper and Biomaterials Editorial Board

This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
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