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Chen Y, Li X, Zizeng W, Feng L, Xie J, Lin Z, Xu Z, Liu B, Li X, Zheng H. Research on a new cationic polyacrylamide (CPAM) with a cationic microblock structure and its enhanced effect on sludge condition and dewatering. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:51865-51878. [PMID: 33990923 DOI: 10.1007/s11356-021-14325-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Accepted: 05/03/2021] [Indexed: 06/12/2023]
Abstract
Flocculation is one of the commonly used sludge conditioning methods in water supply plants, which can improve the sludge dewatering performance by reducing the specific resistance of sludge (SRF), decreasing the amount of sludge, and finally lowering the transportation cost and subsequent disposal cost of sludge. Therefore, it is particularly important to develop new and efficient flocculants. In this paper, the template copolymer of acryloxy trimethylammonium chloride (DAC) and acrylamide (AM) was successfully synthesized by microwave-template copolymerization (MV-TP) using sodium polyacrylate (NaPAA) as template. The template copolymer was analyzed by infrared spectroscopy (FT-IR), X-ray photoelectron spectroscopy (XPS), nuclear magnetic resonance hydrogen spectroscopy (1H NMR), and scanning electron microscopy (SEM). It was found that this template copolymer had obvious cationic microblock structure. In addition, the test results of association constant (KM) and polymerization kinetics showed that the MW-TP was assigned to free radical initiated polymerization and the polymerization mechanism was I Zip-up (ZIP). It confirmed the formation of cation fragment structure again. Due to its dense positive charges in this new cationic microblock structure, it greatly improved the functions of electric neutralization, electrical patching, and adsorption bridging. The cationic fragment structure in the template copolymer could help to generate large and dense floc structure and form stable drainage channels. Under external pressure, these large and compact floc structures had greater compressive resistance, which avoided deformation and blockage of drainage channels and voids. It was beneficial to reduce SRF and evidently enhanced sludge dewatering performance.
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Affiliation(s)
- Yuning Chen
- School of Civil and Transportation Engineering, Guangdong University of Technology, No 100, Waihuan Xi Road, Higher Education Mega Center, Panyu District, Guangzhou, 510006, Guangdong, People's Republic of China
| | - Xuhao Li
- School of Civil and Transportation Engineering, Guangdong University of Technology, No 100, Waihuan Xi Road, Higher Education Mega Center, Panyu District, Guangzhou, 510006, Guangdong, People's Republic of China
| | - Wang Zizeng
- School of Civil and Transportation Engineering, Guangdong University of Technology, No 100, Waihuan Xi Road, Higher Education Mega Center, Panyu District, Guangzhou, 510006, Guangdong, People's Republic of China
| | - Li Feng
- School of Civil and Transportation Engineering, Guangdong University of Technology, No 100, Waihuan Xi Road, Higher Education Mega Center, Panyu District, Guangzhou, 510006, Guangdong, People's Republic of China.
| | - Jiehong Xie
- School of Civil and Transportation Engineering, Guangdong University of Technology, No 100, Waihuan Xi Road, Higher Education Mega Center, Panyu District, Guangzhou, 510006, Guangdong, People's Republic of China
| | - Zeluan Lin
- School of Civil and Transportation Engineering, Guangdong University of Technology, No 100, Waihuan Xi Road, Higher Education Mega Center, Panyu District, Guangzhou, 510006, Guangdong, People's Republic of China
| | - Zhihong Xu
- School of Civil and Transportation Engineering, Guangdong University of Technology, No 100, Waihuan Xi Road, Higher Education Mega Center, Panyu District, Guangzhou, 510006, Guangdong, People's Republic of China
| | - Bingzhi Liu
- School of Civil and Transportation Engineering, Guangdong University of Technology, No 100, Waihuan Xi Road, Higher Education Mega Center, Panyu District, Guangzhou, 510006, Guangdong, People's Republic of China
| | - Xiang Li
- School of Civil Engineering and Architecture, Chongqing University of Science and Technology, Chongqing, 401331, China
- Chongqing Key Laboratory of Energy Engineering Mechanics & Disaster Prevention and Mitigation, Chongqing, 401331, China
| | - Huaili Zheng
- Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing, 400045, China
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Liu X, Yin H, Zhao J, Guo Z, Liu Z, Sang Y. Investigation of molecular weight effect on lignin flocculation induced by poly(diallyldimethylammonium chloride) (PDADMAC) through population balance modeling. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2020.117569] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Huang C, Zheng Y, Lin W, Shi Y, Huang G, Yong Q. Removal of fermentation inhibitors from pre-hydrolysis liquor using polystyrene divinylbenzene resin. BIOTECHNOLOGY FOR BIOFUELS 2020; 13:188. [PMID: 33292538 PMCID: PMC7664058 DOI: 10.1186/s13068-020-01828-3] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Accepted: 11/05/2020] [Indexed: 05/10/2023]
Abstract
BACKGROUND The presence of soluble lignin, furfural and hydroxymethylfurfural (HMF) in industrial pre-hydrolysis liquor (PHL) from the pulping process can inhibit its bioconversion into bioethanol and other biochemicals. Although various technologies have been developed to remove these inhibitors, certain amounts of sugars are also inevitably removed during the treatment process. Hence, polystyrene divinylbenzene (PS-DVB) resin was used as an adsorptive material to simultaneously remove fermentation inhibitors while retaining sugars with high yields to improve the fermentability of PHL after acid hydrolysis by enriching its xylose concentration. The fermentability of acid-hydrolyzed PHL (A-PHL) was evaluated by the bioconversion into ethanol and xylosic acid (XA) after treatment with PS-DVB resin. RESULTS The results showed that the highest xylose concentration (101.1 g/L) in PHL could be obtained by acid hydrolysis at 100 °C for 80 min with 4% acid, while the concentration of fermentation inhibitors (furfural, HMF and lignin) in PHL could also be significantly improved during the acid-hydrolysis process. After treatment with PS-DVB resin, not only were 97% of lignin, 92% of furfural, and 97% of HMF removed from A-PHL, but also 96% of xylose was retained for subsequent fermentation. With resin treatment, the fermentability of A-PHL could be improved by 162-282% for ethanol production from A-PHL containing 30-50 g/L xylose and by 18-828% for XA production from A-PHL containing 90-150 g/L xylose. CONCLUSIONS These results confirmed that PS-DVB resin can remove inhibitors from PHL before producing value-added products by bioconversion. In addition, this work will ideally provide a concept for producing value-added chemicals from pre-hydrolysis liquor, which is regarded as the waste stream in the pulping process.
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Affiliation(s)
- Caoxing Huang
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing, 210037, China
| | - Yayue Zheng
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing, 210037, China
| | - Wenqian Lin
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing, 210037, China
| | - Yuxuan Shi
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing, 210037, China
| | - Guohong Huang
- Department of Material and Structural Engineering, Nanjing Hydraulic Research Institute, Nanjing, 210037, China
| | - Qiang Yong
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing, 210037, China.
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A cycling robust network binder for high performance Si–based negative electrodes for lithium-ion batteries. J Colloid Interface Sci 2020; 578:452-460. [DOI: 10.1016/j.jcis.2020.06.008] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2020] [Revised: 05/21/2020] [Accepted: 06/02/2020] [Indexed: 01/14/2023]
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Combined Treatments Consisting of Calcium Hydroxide and Activate Carbon for Purification of Xylo-Oligosaccharides of Pre-Hydrolysis Liquor. Polymers (Basel) 2019; 11:polym11101558. [PMID: 31557834 PMCID: PMC6835391 DOI: 10.3390/polym11101558] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2019] [Revised: 09/22/2019] [Accepted: 09/23/2019] [Indexed: 11/17/2022] Open
Abstract
In this study, the effect of a combined treatment consisting of calcium hydroxide (CH) followed by activated carbon (AC) on the purification of hemicellulose in the pre-hydrolysis liquor (PHL) from pulping process has been evaluated. The results show that lignin and furfural of PHL are efficiently removed, and the lignin removal is achieved by forming complexes onto CH particles in the CH treatment process, while acetic acid (acetate) is formed from the hydrolysis of acetyl groups present in the dissolved hemicelluloses in the PHL. The loss of xylo-oligosaccharides (XOS) is moderate, even at a high CH dosage of 0.8% while the xylose concentration is essentially unchanged. For the AC treatment, the optimal treating pH can enhance the interactions between AC and residual lignin and change the zeta potential of AC resulting in improved lignin adsorption onto AC. An increase of AC dosage has the tendency to adsorb more XOSDP>6 than XOSDP2~6. Overall, 66.9% of lignin and 70.1% of furfural removals are achieved under the optimal conditions of CH and AC treatment process, with a 5.9% total xylosugars loss. The present combination of CH and AC treatment process was more effective and selective for purification of xylosugars of PHL.
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Population balance modeling of cationic polyacrylamide (CPAM) induced flocculation process for lignin recovery from the pre-hydrolysis liquor of kraft pulping process. Sep Purif Technol 2019. [DOI: 10.1016/j.seppur.2019.03.090] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Li Z, Qiu C, Gao J, Wang H, yingjuan F, Qin M. Improving lignin removal from pre-hydrolysis liquor by horseradish peroxidase-catalyzed polymerization. Sep Purif Technol 2019. [DOI: 10.1016/j.seppur.2018.11.038] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Chen J, Dong J, Yang G, He M, Xu F, Fatehi P. A process for purifying xylosugars of pre-hydrolysis liquor from kraft-based dissolving pulp production process. BIOTECHNOLOGY FOR BIOFUELS 2018; 11:337. [PMID: 30598699 PMCID: PMC6302441 DOI: 10.1186/s13068-018-1336-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2018] [Accepted: 12/10/2018] [Indexed: 05/31/2023]
Abstract
BACKGROUND In the kraft-based dissolving pulp production process, pre-hydrolysis liquor (PHL) is produced, which contains hemicelluloses, lignin, furfural and acetic acid. PHL is currently burned in the recovery boiler of the kraft pulping process, but it can be utilized for the generation of high-valued products, such as xylitol and xylanase, via fermentation processes. However, some PHL constituents, e.g., furfural and lignin, are contaminants for fermentation processes and they must be eliminated for production of value-added products. RESULTS In this work, a process is introduced for removing contaminants of PHL. Ca(OH)2 treatment is the first step of this process, which removed 41.2% of lignin and negligible amount of sugars. In this step, a notable increase in the concentration of acetic acid was achieved (ranging from 6.2 to 11.7 g/L). In the second step, the implementation of adsorption using activated carbon (AC) at 1 wt% dosage led to additional 32% lignin and 5.9% xylosugar removals. In addition, laccase assisted activated carbon treatment led to further removal of lignin via accelerating lignin polymerization and adsorption on AC (i.e., removal from PHL). Overall, 90.7% of lignin, 100% of furfural, 5.7% of xylose, and 12% of xylan were removed from PHL, while the concentration of acetic acid became twofolds in the PHL. CONCLUSIONS This study reports an attractive process for purifying sugars and acetic acid of PHL. This process may be implemented for producing sugar-based value-added products from PHL. It also discusses the mechanism of Ca(OH)2 treatment, AC adsorption and laccase assisted activated carbon treatment for lignin removal.
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Affiliation(s)
- Jiachuan Chen
- State Key Laboratory of Bio-based Materials and Green Papermaking, Qilu University of Technology (Shandong Academy of Sciences), Jinan, 250353 Shandong China
| | - Jiran Dong
- State Key Laboratory of Bio-based Materials and Green Papermaking, Qilu University of Technology (Shandong Academy of Sciences), Jinan, 250353 Shandong China
| | - Guihua Yang
- State Key Laboratory of Bio-based Materials and Green Papermaking, Qilu University of Technology (Shandong Academy of Sciences), Jinan, 250353 Shandong China
| | - Ming He
- State Key Laboratory of Bio-based Materials and Green Papermaking, Qilu University of Technology (Shandong Academy of Sciences), Jinan, 250353 Shandong China
| | - Feng Xu
- State Key Laboratory of Bio-based Materials and Green Papermaking, Qilu University of Technology (Shandong Academy of Sciences), Jinan, 250353 Shandong China
| | - Pedram Fatehi
- State Key Laboratory of Bio-based Materials and Green Papermaking, Qilu University of Technology (Shandong Academy of Sciences), Jinan, 250353 Shandong China
- Green Processes Research Centre and Department of Chemical Engineering, Lakehead University, Thunder Bay, ON P7B 5E1 Canada
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Jiang J, Li Z, Fu Y, Wang Z, Qin M. Enhancement of colloidal particle and lignin removal from pre-hydrolysis liquor of aspen by a combination of pectinase and cationic polymer treatment. Sep Purif Technol 2018. [DOI: 10.1016/j.seppur.2018.01.053] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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10
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Removal of lignin from straw spent pulping liquor using synthetic cationic and biobased flocculants. Sep Purif Technol 2017. [DOI: 10.1016/j.seppur.2017.07.042] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Tian G, Fu Y, Zhuang J, Wang Z, Li Q. Separation of saccharides from prehydrolysis liquor of lignocellulose to upgrade dissolving pulp mill into biorefinery platform. BIORESOURCE TECHNOLOGY 2017; 237:122-125. [PMID: 28242203 DOI: 10.1016/j.biortech.2017.02.023] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2016] [Revised: 02/04/2017] [Accepted: 02/06/2017] [Indexed: 06/06/2023]
Abstract
In this work, a competitive process consisting of polyelectrolyte flocculation, active carbon absorption, and ion exchange was developed for hemicelluloses-derived saccharides (HDSs) purification from prehydrolysis liquor (PHL) of lignocellulose. Results showed that colloidal lignin counted for 20% of non-saccharide compounds (NSCs) and could be eliminated by flocculation at 500mg/L polyaluminium chloride and 50mg/L anionic polyacrylamide. Active carbon was very effective for decoloration of flocculation-treated PHL, but showed limited absorption selectivity toward NSCs. Lignin, the dominant component of NSCs, is characterized with phenolic hydrogen groups. Phenolic lignin could be easily captured by anion exchange resin with 80% removal. The proposed process showed great industrial potential because of the high value saccharides, but also low molecular phenolic lignin.
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Affiliation(s)
- Guoyu Tian
- College of Papermaking Science and Technology, Tianjin University of Science & Technology, Tianjin 300457, China
| | - Yingjuan Fu
- Key Laboratory of Paper Science & Technology, Qilu University of Technology, Jinan 250353, China
| | - Jingshun Zhuang
- Key Laboratory of Paper Science & Technology, Qilu University of Technology, Jinan 250353, China
| | - Zhaojiang Wang
- Key Laboratory of Paper Science & Technology, Qilu University of Technology, Jinan 250353, China
| | - Qun Li
- College of Papermaking Science and Technology, Tianjin University of Science & Technology, Tianjin 300457, China.
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Improved microfiltration of prehydrolysis liquor of wood from dissolving pulp mill by flocculation treatments for hemicellulose recovery. Sep Purif Technol 2017. [DOI: 10.1016/j.seppur.2016.12.005] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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13
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Min BC, Ramarao BV. Mechanisms of the inhibition of enzymatic hydrolysis of waste pulp fibers by calcium carbonate and the influence of nonionic surfactant for mitigation. Bioprocess Biosyst Eng 2017; 40:799-806. [PMID: 28197730 DOI: 10.1007/s00449-017-1745-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2016] [Accepted: 01/25/2017] [Indexed: 11/28/2022]
Abstract
Recycled paper mills produce large quantities of fibrous rejects and fines which are usually sent to landfills as solid waste. These cellulosic materials can be enzymatically hydrolyzed into sugars for the production of biofuels and biomaterials. Paper mill wastes also contain large amounts of calcium carbonate which inhibits cellulase activity. The calcium carbonate (30%, w/w) decreased 40-60% of sugar yield of unbleached softwood kraft pulp. The prime mechanisms for this are by pH variation, competitive and non-productive binding, and aggregation effect. Addition of acetic acid (pH adjustment) increased the sugar production from 19 to 22 g/L of paper mill waste fibers. Strong affinity of enzyme-calcium carbonate decreased free enzyme in solution and hindered sugar production. Electrostatic and hydrogen bond interactions are mainly possible mechanism of enzyme-calcium carbonate adsorption. The application of the nonionic surfactant Tween 80 alleviated the non-productive binding of enzyme with the higher affinity on calcium carbonate. Dissociated calcium ion also inhibited the hydrolysis by aggregation of enzyme.
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Affiliation(s)
- Byeong Cheol Min
- Department of Paper and Bioprocess Engineering, Empire State Paper Research Institute, College of Environmental science and Forestry, State University of New York, 1 Forestry Drive, Syracuse, NY, 13210, USA
| | - Bandaru V Ramarao
- Department of Paper and Bioprocess Engineering, Empire State Paper Research Institute, College of Environmental science and Forestry, State University of New York, 1 Forestry Drive, Syracuse, NY, 13210, USA.
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Wang X, Zhuang J, Fu Y, Tian G, Wang Z, Qin M. Separation of hemicellulose-derived saccharides from wood hydrolysate by lime and ion exchange resin. BIORESOURCE TECHNOLOGY 2016; 206:225-230. [PMID: 26859331 DOI: 10.1016/j.biortech.2016.01.107] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2016] [Revised: 01/27/2016] [Accepted: 01/28/2016] [Indexed: 06/05/2023]
Abstract
A combined process of lime treatment and mixed bed ion exchange was proposed to separate hemicellulose-derived saccharides (HDS) from prehydrolysis liquor (PHL) of lignocellulose as value added products. The optimization of lime treatment achieved up to 44.2% removal of non-saccharide organic compounds (NSOC), mainly colloidal substances, with negligible HDS degradation at 0.5% lime level and subsequent neutralization by phosphoric acid. The residual NSOC and calcium ions in lime-treated PHL were eliminated by mixed bed ion exchange. The breakthrough curves of HDS and NSOC showed selective retention toward NSOC, leading to 75% HDS recovery with 95% purity at 17 bed volumes of exchange capacity. In addition, macroporous resin showed higher exchange capacity than gel resin as indicated by the triple processing volume. The remarkable selectivity of the combined process suggested the feasibility for HDS separation from PHL.
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Affiliation(s)
- Xiaojun Wang
- Key Laboratory of Paper Science & Technology, Qilu University of Technology, Jinan 250353, China
| | - Jingshun Zhuang
- Key Laboratory of Paper Science & Technology, Qilu University of Technology, Jinan 250353, China
| | - Yingjuan Fu
- Key Laboratory of Paper Science & Technology, Qilu University of Technology, Jinan 250353, China
| | - Guoyu Tian
- Key Laboratory of Paper Science & Technology, Qilu University of Technology, Jinan 250353, China
| | - Zhaojiang Wang
- Key Laboratory of Paper Science & Technology, Qilu University of Technology, Jinan 250353, China.
| | - Menghua Qin
- Laboratory of Organic Chemistry, Taishan University, Taian 271021, China
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Tan L, Wang M, Li X, Li H, Zhao J, Qu Y, Choo YM, Loh SK. Fractionation of oil palm empty fruit bunch by bisulfite pretreatment for the production of bioethanol and high value products. BIORESOURCE TECHNOLOGY 2016; 200:572-578. [PMID: 26539970 DOI: 10.1016/j.biortech.2015.10.079] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/27/2015] [Revised: 10/21/2015] [Accepted: 10/23/2015] [Indexed: 06/05/2023]
Abstract
In this work, fractionation of empty fruit bunch (EFB) by bisulfite pretreatment was studied for the production of bioethanol and high value products to achieve biorefinery of EFB. EFB was fractionated to solid and liquor components by bisulfite process. The solid components were used for bioethanol production by quasi-simultaneous saccharification and fermentation. The liquor components were then converted to furfural by hydrolysis with sulfuric acid. Preliminary results showed that the concentration of furfural was highest at 18.8g/L with 0.75% sulfuric acid and reaction time of 25min. The conversion of xylose to furfural was 82.5%. Furthermore, we attempted to fractionate the liquor into hemicellulose sugars and lignin by different methods for producing potential chemicals, such as xylose, xylooligosaccharide, and lignosulfonate. Our research showed that the combination of bisulfite pretreatment and resin separation could effectively fractionate EFB components to produce bioethanol and other high value chemicals.
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Affiliation(s)
- Liping Tan
- State Key Laboratory of Microbial Technology, Shandong University, Jinan City 250100, China
| | - Meimei Wang
- State Key Laboratory of Microbial Technology, Shandong University, Jinan City 250100, China
| | - Xuezhi Li
- State Key Laboratory of Microbial Technology, Shandong University, Jinan City 250100, China
| | - Hongxing Li
- State Key Laboratory of Microbial Technology, Shandong University, Jinan City 250100, China
| | - Jian Zhao
- State Key Laboratory of Microbial Technology, Shandong University, Jinan City 250100, China.
| | - Yinbo Qu
- State Key Laboratory of Microbial Technology, Shandong University, Jinan City 250100, China
| | - Yuen May Choo
- Malaysian Palm Oil Board, P.O. Box 10620, 50720 Kuala Lumpur, Malaysia
| | - Soh Kheang Loh
- Malaysian Palm Oil Board, P.O. Box 10620, 50720 Kuala Lumpur, Malaysia
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Wang X, Zhuang J, Jiang J, Fu Y, Qin M, Wang Z. Separation and purification of hemicellulose-derived saccharides from wood hydrolysate by combined process. BIORESOURCE TECHNOLOGY 2015; 196:426-430. [PMID: 26275826 DOI: 10.1016/j.biortech.2015.07.064] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2015] [Revised: 07/17/2015] [Accepted: 07/18/2015] [Indexed: 06/04/2023]
Abstract
Prehydrolysis of wood biomass prior to kraft cooking provides a stream containing hemicellulose-derived saccharides (HDSs) but also undesired non-saccharide compounds (NSCs) that were resulted from lignin depolymerization and carbohydrate degradation. In this study, a combined process consisting of lime treatment, resin adsorption, and gel filtration was developed to separate HDSs from NSCs. The macro-lignin impurities that accounted for 32.2% of NSCs were removed by lime treatment at 1.2% dosage with negligible HDSs loss. The majority of NSCs, lignin-derived phenolics, were eliminated by mixed bed ion exchange resin, elevating NSCs removal to 94.0%. The remaining NSCs, furfural and hydroxymethylfurfural, were excluded from HDSs by gel filtration. Chemical composition analysis showed that xylooligosaccharides (XOS) with the degree of depolymerization from 2 to 6 accounted for 28% of the total purified HDSs.
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Affiliation(s)
- Xiaojun Wang
- Key Laboratory of Paper Science & Technology, Qilu University of Technology, Jinan 250353, China
| | - Jingshun Zhuang
- Key Laboratory of Paper Science & Technology, Qilu University of Technology, Jinan 250353, China
| | - Jungang Jiang
- Key Laboratory of Paper Science & Technology, Qilu University of Technology, Jinan 250353, China
| | - Yingjuan Fu
- Key Laboratory of Paper Science & Technology, Qilu University of Technology, Jinan 250353, China
| | - Menghua Qin
- Key Laboratory of Paper Science & Technology, Qilu University of Technology, Jinan 250353, China; Laboratory of Organic Chemistry, Taishan University, Taian 271021, China.
| | - Zhaojiang Wang
- Key Laboratory of Paper Science & Technology, Qilu University of Technology, Jinan 250353, China; State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510641, China.
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Min BC, Bhayani BV, Jampana VS, Ramarao BV. Enhancement of the enzymatic hydrolysis of fines from recycled paper mill waste rejects. BIORESOUR BIOPROCESS 2015. [DOI: 10.1186/s40643-015-0068-2] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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18
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Cave G, Fatehi P. Separation of lignosulfonate from spent liquor of neutral sulphite semichemical pulping process via surfactant treatment. Sep Purif Technol 2015. [DOI: 10.1016/j.seppur.2015.07.017] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Mechmech F, Chadjaa H, Rahni M, Marinova M, Ben Akacha N, Gargouri M. Improvement of butanol production from a hardwood hemicelluloses hydrolysate by combined sugar concentration and phenols removal. BIORESOURCE TECHNOLOGY 2015; 192:287-295. [PMID: 26046428 DOI: 10.1016/j.biortech.2015.05.012] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/19/2015] [Revised: 05/06/2015] [Accepted: 05/07/2015] [Indexed: 06/04/2023]
Abstract
The feasibility of using hardwood hemicellulosic pre-hydrolysate recovered from a dissolving pulping process for Acetone-Butanol-Ethanol (ABE) fermentation has been investigated. Dilutions and detoxification methods based on flocculation and nanofiltration were tested to determine the inhibitory concentration of phenolic compounds and to evaluate the efficiency of inhibitors removal on fermentation. Flocculation carried out with ferric sulfate was the most effective method for removal of phenolics (56%) and acetic acid (80%). The impact on fermentation was significant, with an ABE production of 6.40 g/L and 4.25 g/L when using flocculation or combined nanofiltration/flocculation respectively, as compared to a non-significant production for the untreated hydrolysate. By decreasing the toxicity effect of inhibitors, this study reports for the first time that the use of these techniques is efficient to increase the inhibitory concentration threshold of phenols, from 0.3g/L in untreated hydrolysate, to 1.1g/L in flocculated and in nanofiltrated and flocculated hydrolysates.
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Affiliation(s)
- Fatma Mechmech
- Biocatalysis and Industrial Enzymes Group, Laboratory of Microbial Ecology and Technology, National Institute of Applied Sciences and Technology (INSAT) Tunis, University of Carthage, Tunisia; Research Unit on Energy Efficiency and Sustainable Development of the Forest Biorefinery, Department of Chemical Engineering, Polytechnique Montréal, Montréal, QC, Canada
| | - Hassan Chadjaa
- Centre National en Electrochimie et en Technologies Environnementales, Shawinigan, QC, Canada
| | - Mohamed Rahni
- Centre National en Electrochimie et en Technologies Environnementales, Shawinigan, QC, Canada
| | - Mariya Marinova
- Research Unit on Energy Efficiency and Sustainable Development of the Forest Biorefinery, Department of Chemical Engineering, Polytechnique Montréal, Montréal, QC, Canada.
| | - Najla Ben Akacha
- Laboratory of Natural Substances, National Institute of Research and Physical and Chemical Analysis (INRAP), Biotechno pole Sidi Thabet, Ariana, Tunisia
| | - Mohamed Gargouri
- Biocatalysis and Industrial Enzymes Group, Laboratory of Microbial Ecology and Technology, National Institute of Applied Sciences and Technology (INSAT) Tunis, University of Carthage, Tunisia
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Wang Z, Wang X, Fu Y, Li Z, Zhang F, Qin M. Colloidal behaviors of lignin contaminants: Destabilization and elimination for oligosaccharides separation from wood hydrolysate. Sep Purif Technol 2015. [DOI: 10.1016/j.seppur.2015.03.001] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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21
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Buyel JF, Twyman RM, Fischer R. Extraction and downstream processing of plant-derived recombinant proteins. Biotechnol Adv 2015; 33:902-13. [PMID: 25922318 DOI: 10.1016/j.biotechadv.2015.04.010] [Citation(s) in RCA: 84] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2015] [Revised: 04/15/2015] [Accepted: 04/22/2015] [Indexed: 12/11/2022]
Abstract
Plants offer the tantalizing prospect of low-cost automated manufacturing processes for biopharmaceutical proteins, but several challenges must be addressed before such goals are realized and the most significant hurdles are found during downstream processing (DSP). In contrast to the standardized microbial and mammalian cell platforms embraced by the biopharmaceutical industry, there are many different plant-based expression systems vying for attention, and those with the greatest potential to provide inexpensive biopharmaceuticals are also the ones with the most significant drawbacks in terms of DSP. This is because the most scalable plant systems are based on the expression of intracellular proteins in whole plants. The plant tissue must therefore be disrupted to extract the product, challenging the initial DSP steps with an unusually high load of both particulate and soluble contaminants. DSP platform technologies can accelerate and simplify process development, including centrifugation, filtration, flocculation, and integrated methods that combine solid-liquid separation, purification and concentration, such as aqueous two-phase separation systems. Protein tags can also facilitate these DSP steps, but they are difficult to transfer to a commercial environment and more generic, flexible and scalable strategies to separate target and host cell proteins are preferable, such as membrane technologies and heat/pH precipitation. In this context, clarified plant extracts behave similarly to the feed stream from microbes or mammalian cells and the corresponding purification methods can be applied, as long as they are adapted for plant-specific soluble contaminants such as the superabundant protein RuBisCO. Plant-derived pharmaceutical proteins cannot yet compete directly with established platforms but they are beginning to penetrate niche markets that allow the beneficial properties of plants to be exploited, such as the ability to produce 'biobetters' with tailored glycans, the ability to scale up production rapidly for emergency responses and the ability to produce commodity recombinant proteins on an agricultural scale.
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Affiliation(s)
- J F Buyel
- Institute for Molecular Biotechnology, Worringerweg 1, RWTH Aachen University, 52074 Aachen, Germany; Fraunhofer Institute for Molecular Biology and Applied Ecology IME, Forckenbeckstraße 6, 52074 Aachen, Germany.
| | - R M Twyman
- TRM Ltd, PO Box 463, York, United Kingdom.
| | - R Fischer
- Institute for Molecular Biotechnology, Worringerweg 1, RWTH Aachen University, 52074 Aachen, Germany; Fraunhofer Institute for Molecular Biology and Applied Ecology IME, Forckenbeckstraße 6, 52074 Aachen, Germany.
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22
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Buyel JF, Fischer R. Synthetic polymers are more effective than natural flocculants for the clarification of tobacco leaf extracts. J Biotechnol 2015; 195:37-42. [PMID: 25545028 DOI: 10.1016/j.jbiotec.2014.12.018] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2014] [Revised: 12/16/2014] [Accepted: 12/19/2014] [Indexed: 12/01/2022]
Abstract
The use of synthetic polymers as flocculants can increase filter capacity and thus reduce the costs of downstream processing during the production of plant-derived biopharmaceutical proteins, but this may also attract regulatory scrutiny due to the potential toxicity of such compounds. Therefore, we investigated the efficacy of three non-toxic natural flocculants (chitosan, kaolin and polyphosphate) alone and in combination with each other or with a synthetic polymer (Polymin P) during the clarification of tobacco leaf extracts. We used a design-of-experiments approach to determine the impact of each combination on filter capacity. We found that Polymin P was most effective when used on its own but the natural flocculants were more effective when used in combination. The combination of chitosan and polyphosphate was the most effective natural flocculant, and this was identified as a potential replacement for Polymin P under neutral and acidic extraction conditions independent of the conductivity, even though the efficiency of flocculation was lower than for Polymin P. None of the tested flocculants reduced the concentration of total soluble protein in the feed stream or the recovery of the model fluorescent protein DsRed.
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Affiliation(s)
- Johannes F Buyel
- Institute for Molecular Biotechnology, Worringerweg 1, RWTH Aachen University, 52074 Aachen, Germany.
| | - Rainer Fischer
- Institute for Molecular Biotechnology, Worringerweg 1, RWTH Aachen University, 52074 Aachen, Germany; Fraunhofer Institute for Molecular Biology and Applied Ecology, Forckenbeckstraße 6, 52074 Aachen, Germany.
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23
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Wang Z, Wang X, Fu Y, Yuan Z, Qin M. Saccharide separation from wood prehydrolysis liquor: comparison of selectivity toward non-saccharide compounds with separate techniques. RSC Adv 2015. [DOI: 10.1039/c4ra17017b] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Selectivity comparison for saccharides separation from wood hydrolysate.
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Affiliation(s)
- Zhaojiang Wang
- Key Laboratory of Paper Science & Technology
- Qilu University of Technology
- Jinan
- China
| | - Xiaojun Wang
- Key Laboratory of Paper Science & Technology
- Qilu University of Technology
- Jinan
- China
| | - Yingjuan Fu
- Key Laboratory of Paper Science & Technology
- Qilu University of Technology
- Jinan
- China
| | - Zaiwu Yuan
- Key Laboratory of Fine Chemicals
- Qilu University of Technology
- Jinan
- China
| | - Menghua Qin
- Key Laboratory of Paper Science & Technology
- Qilu University of Technology
- Jinan
- China
- Laboratory of Organic Chemistry
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Wang Q, Liu S, Yang G, Chen J. Modeling laccase-induced lignin removal in prehydrolysis liquor from kraft-based dissolving pulp production. BIORESOURCE TECHNOLOGY 2015; 175:638-41. [PMID: 25465791 DOI: 10.1016/j.biortech.2014.10.149] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2014] [Revised: 10/26/2014] [Accepted: 10/29/2014] [Indexed: 05/16/2023]
Abstract
Laccase treatment is a promising approach to remove lignin from prehydrolysis liquor (PHL) for value added utilization of hemicellulose rich waste streams. Modeling the lignin removal process is of practical interest for prediction and control of laccase treatment of PHL. The present study focused on the lignin removal through variation of laccase charge and treatment time. Results showed that the lignin removal may be divided into two phases, i.e. a fast initial phase followed by a second slow phase. A kinetic model based on the experimental results was developed, which can be used to predict the lignin removal of PHL during the laccase treatment.
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Affiliation(s)
- Qiang Wang
- Key Lab of Pulp & Paper Science and Technology of the Ministry of Education, Qilu University of Technology, Jinan, Shandong Province 250353, PR China; State Key Laboratory of Pulp & Paper Engineering, South China University of Technology, Guangzhou, Guangdong Province 510640, PR China
| | - Shanshan Liu
- Key Lab of Pulp & Paper Science and Technology of the Ministry of Education, Qilu University of Technology, Jinan, Shandong Province 250353, PR China
| | - Guihua Yang
- Key Lab of Pulp & Paper Science and Technology of the Ministry of Education, Qilu University of Technology, Jinan, Shandong Province 250353, PR China
| | - Jiachuan Chen
- Key Lab of Pulp & Paper Science and Technology of the Ministry of Education, Qilu University of Technology, Jinan, Shandong Province 250353, PR China
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Wang Z, Jiang J, Wang X, Fu Y, Li Z, Zhang F, Qin M. Selective removal of phenolic lignin derivatives enables sugars recovery from wood prehydrolysis liquor with remarkable yield. BIORESOURCE TECHNOLOGY 2014; 174:198-203. [PMID: 25463800 DOI: 10.1016/j.biortech.2014.10.025] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/2014] [Revised: 09/24/2014] [Accepted: 10/03/2014] [Indexed: 05/25/2023]
Abstract
The specific elimination of lignin derivatives from wood hydrolysate without sugar loss has great practical significance to biorefinery and bioenergy. In the present study, a process consisting of calcium hydroxide and anion exchange resin treatments was developed for the purpose of selective removal of lignin from wood prehydrolysis liquor (PHL). Particular emphasis was made on the ionization of phenolic lignin, and the subsequent binding to metallic salts. It was observed that phenolic hydroxyl groups (PhOH) in lignin played an important role in lignin removal. The results showed that up to 95.2% lignin was removed from PHL with 78.8% sugar recovery. This suggested that the proposed process is highly specific to lignin, and therefore can be envisaged as a great contribution to wood-sugar production or bioenergy conversion.
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Affiliation(s)
- Zhaojiang Wang
- Key Laboratory of Paper Science & Technology, Qilu University of Technology, Jinan 250353, China.
| | - Jungang Jiang
- Key Laboratory of Paper Science & Technology, Qilu University of Technology, Jinan 250353, China
| | - Xiaojun Wang
- Key Laboratory of Paper Science & Technology, Qilu University of Technology, Jinan 250353, China
| | - Yingjuan Fu
- Key Laboratory of Paper Science & Technology, Qilu University of Technology, Jinan 250353, China
| | - Zongquan Li
- Key Laboratory of Paper Science & Technology, Qilu University of Technology, Jinan 250353, China
| | - Fengshan Zhang
- Huatai Group Corp. Ltd., Dongying, Shandong 257335, China
| | - Menghua Qin
- Key Laboratory of Paper Science & Technology, Qilu University of Technology, Jinan 250353, China; Laboratory of Organic Chemistry, Taishan University, Taian 271021, China; Huatai Group Corp. Ltd., Dongying, Shandong 257335, China.
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26
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Wang Q, Jahan MS, Liu S, Miao Q, Ni Y. Lignin removal enhancement from prehydrolysis liquor of kraft-based dissolving pulp production by laccase-induced polymerization. BIORESOURCE TECHNOLOGY 2014; 164:380-5. [PMID: 24865327 DOI: 10.1016/j.biortech.2014.05.005] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2014] [Revised: 04/30/2014] [Accepted: 05/02/2014] [Indexed: 05/16/2023]
Abstract
Lignin removal is essential for value-added utilization of hemicelluloses and acetic acid present in the prehydrolysis liquor (PHL) of a kraft-based hardwood dissolving pulp production. In this paper, a novel process concept, consisting of laccase-induced lignin polymerization, followed by filtration/flocculation, was developed to enhance the lignin removal. The results showed that the lignin removal increased from 11% to 46-61% at laccase concentration of 1-4 U mL(-1). The GPC results showed that the molecular weight of the lignin from the laccase treated PHL was increased by 160% in comparison with the original one. The subsequent flocculation using singular Poly-DADMAC system or dual polymer system of Poly-DADMAC/CPAM can further remove 10-15% lignin. The concentrations of hemicelluloses and acetic acid were negligibly affected during the laccase treatment, while flocculation caused 12-15% of total sugar loss. Additionally, the process incorporates this new concept into the kraft-based dissolving pulp production process was proposed.
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Affiliation(s)
- Qiang Wang
- Key Laboratory of Pulp & Paper Science and Technology (Qilu University of Technology), Ministry of Education, Jinan, Shandong 250353, PR China; Limerick Pulp and Paper Centre, University of New Brunswick, Fredericton, New Brunswick E3B 5A3, Canada.
| | - M Sarwar Jahan
- Limerick Pulp and Paper Centre, University of New Brunswick, Fredericton, New Brunswick E3B 5A3, Canada; Pulp and Paper Research Division, BCSIR Laboratories, Dhaka, Dr. Qudrat-i-Khuda Road, Dhaka 1205, Bangladesh
| | - Shanshan Liu
- Key Laboratory of Pulp & Paper Science and Technology (Qilu University of Technology), Ministry of Education, Jinan, Shandong 250353, PR China; Limerick Pulp and Paper Centre, University of New Brunswick, Fredericton, New Brunswick E3B 5A3, Canada
| | - Qingxian Miao
- Limerick Pulp and Paper Centre, University of New Brunswick, Fredericton, New Brunswick E3B 5A3, Canada; College of Material Engineering, Fujian Agriculture and Forestry University, Fuzhou 350002, PR China
| | - Yonghao Ni
- Limerick Pulp and Paper Centre, University of New Brunswick, Fredericton, New Brunswick E3B 5A3, Canada
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27
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Ma XJ, Cao SL, Yang XF, Lin L, Chen LH, Huang LL. Lignin removal and benzene-alcohol extraction effects on lignin measurements of the hydrothermal pretreated bamboo substrate. BIORESOURCE TECHNOLOGY 2014; 151:244-248. [PMID: 24246479 DOI: 10.1016/j.biortech.2013.10.078] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2013] [Revised: 10/21/2013] [Accepted: 10/23/2013] [Indexed: 06/02/2023]
Abstract
Lignin content of hydrothermal pretreated bamboo chips was determined by the two methods: TAPPI standard method (222om-06) and TAPPI standard method without benzene-alcohol extraction (BAE). The results showed that including BAE resulted in lower Klason lignin (KL) and acid soluble lignin (ASL) measurements in the prehydrolyzed substrate, that is to say, BAE removed parts of KL and ASL. Therefore, the TAPPI standard method should be modified by omitting the BAE for lignin measurements of pretreated substrate. The following lignin removal analysis suggested that lignin was removed from the bamboo substrate during pretreatment by a combination of degradation reaction and deconstruction; thereafter the pseudo lignin generated in the hydrothermal pretreatment and condensation reaction between the lignin fragments accounted for the later KL increase.
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Affiliation(s)
- X J Ma
- College of Material Engineering, Fujian Agriculture and Forestry University, Fuzhou 350002, PR China
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28
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Piazza GJ, Lora JH, Garcia RA. Flocculation of high purity wheat straw soda lignin. BIORESOURCE TECHNOLOGY 2013; 152:548-551. [PMID: 24326211 DOI: 10.1016/j.biortech.2013.11.040] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/24/2013] [Revised: 11/11/2013] [Accepted: 11/14/2013] [Indexed: 06/03/2023]
Abstract
In industrial process, acidification causes non-sulfonated lignin insolubility. The flocculants poly(diallyldimethylammonium chloride) (pDADMAC) and bovine blood (BB) also caused lignin insolubility while cationic polyacrylamide, chitosan, and soy protein PF 974 were ineffective. Turbidity determined optimal flocculant, but turbidity magnitude with BB was greater than expected. pDADMAC caused negative lignin Zeta potential to became positive, but BB-lignin Zeta potential was always negative. Insoluble lignin did not gravity sediment, and flocculant-lignin mixtures were centrifuged. Pellet and supernatant dry mass and corrected spectroscopic results were in good agreement for optimal pDADMAC and BB. Spectroscopy showed 87-92% loss of supernatant lignin. Nitrogen analysis showed BB concentrated in the pellet until the pellet became saturated with BB. Subtracting ash and BB mass from pellet and supernatant mass confirmed optimal BB. Low levels of alum caused increased lignin flocculation at lower levels of pDADMAC and BB, but alum did not affect optimal flocculant.
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Affiliation(s)
- G J Piazza
- U.S. Department of Agriculture, Agricultural Research Service, Eastern Regional Research Center, Biobased and Other Animal Coproducts Research Unit, 600 East Mermaid Lane, Wyndmoor, PA 19038, USA.
| | - J H Lora
- U.S. Department of Agriculture, Agricultural Research Service, Eastern Regional Research Center, Biobased and Other Animal Coproducts Research Unit, 600 East Mermaid Lane, Wyndmoor, PA 19038, USA.
| | - R A Garcia
- U.S. Department of Agriculture, Agricultural Research Service, Eastern Regional Research Center, Biobased and Other Animal Coproducts Research Unit, 600 East Mermaid Lane, Wyndmoor, PA 19038, USA
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29
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Chen X, Wang Z, Fu Y, Li Z, Qin M. Specific lignin precipitation for oligosaccharides recovery from hot water wood extract. BIORESOURCE TECHNOLOGY 2013; 152:31-7. [PMID: 24275023 DOI: 10.1016/j.biortech.2013.10.113] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2013] [Revised: 10/28/2013] [Accepted: 10/30/2013] [Indexed: 05/25/2023]
Abstract
Hot water extraction is an important strategy of wood fractionation, by which the hemicelluloses can be separated for value-added products, while the residual solid can still be processed into traditional wood products. In this study, a combined process consisting of specific lignin precipitation and dialysis was proposed to recover hemicellulosic oligosaccharides (OS) from hot water extract (HWE). The results showed that polyaluminium chloride (PAC) precipitation was highly specific to large molecular lignin, leading to 25.1% lignin removal with negligible OS loss through charge neutralization mechanism. The separation was further enhanced by dialysis, reaching 37.6% OS recovery from HWE with remarkable purity of 94.1%. By the proposed process, 56.36 g OS, mainly xylooligosaccharides with two fractions of 5.2 and 0.51 kDa was recovered from one kg dried wood. This process can be envisaged as a great contribution to wood biorefinery.
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Affiliation(s)
- Xiaoqian Chen
- Key Laboratory of Paper Science & Technology of Ministry of Education, Qilu University of Technology, Jinan 250353, China
| | - Zhaojiang Wang
- Key Laboratory of Paper Science & Technology of Ministry of Education, Qilu University of Technology, Jinan 250353, China
| | - Yingjuan Fu
- Key Laboratory of Paper Science & Technology of Ministry of Education, Qilu University of Technology, Jinan 250353, China
| | - Zongquan Li
- Key Laboratory of Paper Science & Technology of Ministry of Education, Qilu University of Technology, Jinan 250353, China
| | - Menghua Qin
- Laboratory of Organic Chemistry, Taishan University, Taian 271021, China.
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30
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Yang X, Chen L, Xiang S, Li L, Xia D. Regeneration of Waste Lubricant Oil by Extraction–Flocculation Composite Refining. Ind Eng Chem Res 2013. [DOI: 10.1021/ie4015099] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Xin Yang
- Department of Military Oil Application & Management Engineering, Logistical Engineering University of PLA, Chongqing 401311, China
| | - Ligong Chen
- Department of Military Oil Application & Management Engineering, Logistical Engineering University of PLA, Chongqing 401311, China
| | - Shuo Xiang
- Department of Military Oil Application & Management Engineering, Logistical Engineering University of PLA, Chongqing 401311, China
| | - Liang Li
- Department of Military Oil Application & Management Engineering, Logistical Engineering University of PLA, Chongqing 401311, China
| | - Di Xia
- Department of Military Oil Application & Management Engineering, Logistical Engineering University of PLA, Chongqing 401311, China
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Fatehi P, Hamdan FC, Ni Y. Adsorption of lignocelluloses of pre-hydrolysis liquor on calcium carbonate to induce functional filler. Carbohydr Polym 2013; 94:531-8. [DOI: 10.1016/j.carbpol.2013.01.081] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2012] [Revised: 12/21/2012] [Accepted: 01/13/2013] [Indexed: 11/30/2022]
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32
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Fatehi P, Shen J, Hamdan FC, Ni Y. Improving the adsorption of lignocelluloses of prehydrolysis liquor on precipitated calcium carbonate. Carbohydr Polym 2013; 92:2103-10. [DOI: 10.1016/j.carbpol.2012.11.046] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2012] [Revised: 10/20/2012] [Accepted: 11/03/2012] [Indexed: 11/25/2022]
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