Optimization of Microwave-Hydrogen Peroxide Pretreatment of Cellulose

被引：10

作者：

Su, Jingjing ^{[1
,2
]}

Zhu, Hongxiang ^{[1
,2
]}

Wang, Lijun ^{[1
,2
]}

Liu, Xinliang ^{[1
,2
]}

Nie, Shuangxi ^{[1
,2
]}

Xiong, Jianhua ^{[3
,4
]}

机构：

[1] Guangxi Univ, Coll Light Ind & Food Engn, Nanning 530004, Peoples R China

[2] Guangxi Key Lab Clean Pulp & Papermaking & Pollut, Nanning 530004, Peoples R China

[3] Guangxi Univ, Sch Environm, Nanning 530004, Peoples R China

[4] State Univ New York, Coll Environm Sci & Forestry, Dept Paper & Bioproc Engn, Syracuse, NY 13210 USA

来源：

BIORESOURCES | 2016年 / 11卷 / 03期

基金：

中国国家自然科学基金;

关键词：

Hydrogen peroxide; Microwave; Response surface methodology (RSM); Cellulose pretreatment; RESPONSE-SURFACE METHODOLOGY; SINGLE METAL SOLUTIONS; HYDROLYSIS; IRRADIATION; CRYSTALLINITY; ADSORPTION; OXIDATION; BEHAVIOR; REMOVAL; CD(II);

D O I：

10.15376/biores.11.3.7416-7430

中图分类号：

TB3 [工程材料学]; TS [轻工业、手工业、生活服务业];

学科分类号：

0805 ; 080502 ; 0822 ;

摘要：

A hydrogen peroxide (H2O2) solution was adapted for microwave pretreatment of microcrystalline cellulose, which can be further used for heavy metal adsorption. The H2O2 concentration, temperature, and retention time were the key factors affecting the microwave/hydrogen peroxide pretreatment process. A Box-Benhken design (BBD) with response surface methodology (RSM) was employed to design and optimize the microwave-hydrogen peroxide pretreatment process (H2O2 pretreatment) of cellulose. After the H2O2 pretreatment, the crystallinity of cellulose decreased by 20% and the degree of polymerization (DP) decreased by up to 30%. The optimal conditions obtained by BBD were a H2O2 concentration of 8.37%, a temperature of 90 degrees C, and a retention time 5.33 min. Under these conditions, a minimum DP of 91.74 was achieved. The results indicated that all three of the factors notably affected the reduction of cellulose polymerization degree and pronounced interactions existed among the response variables. The predictive model developed was able to optimize the pretreatment process for the reduction of cellulose polymerization degree, which could improve the cellulose modification reactivity.

引用

页码：7416 / 7430

页数：15

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