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Zhang J, Zhang W, Cai Z, Zhang J, Guan D, Ji D, Gao W. Effect of Ammonia Fiber Expansion Combined with NaOH Pretreatment on the Resource Efficiency of Herbaceous and Woody Lignocellulosic Biomass. ACS OMEGA 2022; 7:18761-18769. [PMID: 35694490 PMCID: PMC9178718 DOI: 10.1021/acsomega.2c01302] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2022] [Accepted: 05/06/2022] [Indexed: 06/10/2023]
Abstract
The most essential issue facing the world today is the provision of energy and sustainable consumption of natural resources. Pretreatment is an essential step to produce biofuels from lignocellulosic biomass. In this study, ammonia fiber explosion (AFEX) combined with NaOH (A-NaOH) pretreatment effects on the characteristics of Pennisetum sinese (herbaceous), oak (hardwood), and camphor wood (softwood) were assessed using enzymatic efficiency analysis, thereby identifying the composition properties of subsequent bio-H2 production. The results show that the lignin removal (84.2%, 59.7%, and 36.7%, respectively) at 5%A-NaOH conditions and enzymatic efficiency (36.2%, 9.7%, and 6.5%, respectively) of Pennisetum sinese (P. sinese), oak, and camphor wood were significantly increased under 4% A-NaOH conditions. Further A-NaOH pretreatment significantly promoted dark fermentation bio-H2 production (152.3, 99.1, and 76.9 mL/g TS, respectively) and volatile acid production (4660.2, 3720.2, and 3496.2 mg/L, respectively) of P. sinese, oak, and camphor wood. These findings show that A-NaOH pretreatment is an effective means of utilization of lignocellulose resources.
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Affiliation(s)
- Jingjing Zhang
- College
of Environmental Science and Engineering, Qilu University of Technology (Shandong Academy of Science), Jinan, Shandong, P. R. China 250353
| | - Weihua Zhang
- Institute
of Vegetables and Flowers, Shandong Academy
of Agricultural Sciences, Jinan, Shandong, P.
R. China 250100
- Shandong
Green Fertilizer Technology Innovation Center, Linyi, Shandong, P. R. China 276700
| | - Ziyuan Cai
- College
of Environmental Science and Engineering, Qilu University of Technology (Shandong Academy of Science), Jinan, Shandong, P. R. China 250353
| | - Jilin Zhang
- College
of Environmental Science and Engineering, Qilu University of Technology (Shandong Academy of Science), Jinan, Shandong, P. R. China 250353
| | - Dan Guan
- China
Biotech Fermentation Industry Association, Beijing, P. R. China, 100833
| | - Dandan Ji
- College
of Environmental Science and Engineering, Qilu University of Technology (Shandong Academy of Science), Jinan, Shandong, P. R. China 250353
- Shandong
Green Fertilizer Technology Innovation Center, Linyi, Shandong, P. R. China 276700
| | - Wensheng Gao
- Shandong
Agricultural Technology Extension Center, Jinan, Shandong, P.
R. China 250003
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2
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Zhang T, Jiang D, Zhang H, Lee DJ, Zhang Z, Zhang Q, Jing Y, Zhang Y, Xia C. Effects of different pretreatment methods on the structural characteristics, enzymatic saccharification and photo-fermentative bio-hydrogen production performance of corn straw. BIORESOURCE TECHNOLOGY 2020; 304:122999. [PMID: 32087543 DOI: 10.1016/j.biortech.2020.122999] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/26/2019] [Revised: 02/04/2020] [Accepted: 02/08/2020] [Indexed: 06/10/2023]
Abstract
In this study, the effects of different pretreatment methods, including hydrothermal, acid, alkali, acid-heat, and alkali-heat on the structural characteristics, enzymatic saccharification and photo-fermentative bio-hydrogen production performance of corn straw were investigated. Results revealed that all the studied pretreatments effectively destroyed the corn straw structure and improved its enzymatic saccharification potential. The alkali-heat and alkali pretreatment showed significant advantage in reducing sugars release, and the highest total reducing sugar concentration of 23.07 g/L was obtained under the pretreatment condition of 2% NaOH-Heat. The maximum cumulative hydrogen yield of 137.76 mL/g TS was achieved from 2% NaOH pretreated corn straw, while corn straw pretreated with 4% NaOH-heat had the minimum cumulative hydrogen yield of 44.20 mL/g TS. These results suggest that appropriate pretreatment can effectively destroy the corn straw structure and enhance its enzymatic saccharification and hydrogen production performance.
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Affiliation(s)
- Tian Zhang
- Key Laboratory of New Materials and Facilities for Rural Renewable Energy of MOA of China, Henan Agricultural University, Zhengzhou 450002, China
| | - Danping Jiang
- Key Laboratory of New Materials and Facilities for Rural Renewable Energy of MOA of China, Henan Agricultural University, Zhengzhou 450002, China
| | - Huan Zhang
- Key Laboratory of New Materials and Facilities for Rural Renewable Energy of MOA of China, Henan Agricultural University, Zhengzhou 450002, China
| | - Duu-Jong Lee
- Department of Chemical Engineering, National Taiwan University, Taipei 10617, Taiwan
| | - Zhiping Zhang
- Key Laboratory of New Materials and Facilities for Rural Renewable Energy of MOA of China, Henan Agricultural University, Zhengzhou 450002, China
| | - Quanguo Zhang
- Key Laboratory of New Materials and Facilities for Rural Renewable Energy of MOA of China, Henan Agricultural University, Zhengzhou 450002, China; Institute of Agricultural Engineering, Huanghe S & T University, Zhengzhou 450006, China.
| | - Yanyan Jing
- Key Laboratory of New Materials and Facilities for Rural Renewable Energy of MOA of China, Henan Agricultural University, Zhengzhou 450002, China; Institute of Agricultural Engineering, Huanghe S & T University, Zhengzhou 450006, China
| | - Yang Zhang
- Key Laboratory of New Materials and Facilities for Rural Renewable Energy of MOA of China, Henan Agricultural University, Zhengzhou 450002, China
| | - Chenxi Xia
- Institute of Agricultural Engineering, Huanghe S & T University, Zhengzhou 450006, China
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3
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Assessment of biotechnological potentials of strains isolated from repasso olive pomace in Tunisia. ANN MICROBIOL 2019. [DOI: 10.1007/s13213-019-01499-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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4
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Chen J, Yu Y, Han J, Guo Y, Yang Z, Shang Q, Liu C. Mechanochemical esterification of waste mulberry wood by wet Ball-milling with tetrabutylammonium fluoride. BIORESOURCE TECHNOLOGY 2019; 285:121354. [PMID: 31004953 DOI: 10.1016/j.biortech.2019.121354] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/28/2019] [Revised: 04/12/2019] [Accepted: 04/13/2019] [Indexed: 06/09/2023]
Abstract
Esterification of lignocellulosic biomass driven by dry ball-milling suffered from agglomeration of lignocellulosic matters during milling process. In this study, esterification of waste mulberry wood (MW) was carried out by wet ball-milling with water and tetrabutylammonium fluoride (TBAF) to prepare all-wood-plastic composites. Under the same condition, the esterification of MW by wet ball-milling with TBAF presented higher efficiency than that without TBAF which was attributed to catalytic function of F- ions meanwhile the binding of TBA+ to cellulose fibrils hindered the compaction of fibrillated fragments. Pre-ball-milling of MW for 4.0 h apparently promoted the esterification with succinic anhydride. All-wood-plastic composites prepared after 7.0 h succinoylation demonstrated prominent mechanical performance due to strong adhesion of fragments and matrix. This study is supposed to provide an environment-friendly method for efficient conversion of waste lignocellulosic biomass.
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Affiliation(s)
- Jianqiang Chen
- College of Biology and the Environment, Nanjing Forestry University, 159 Longpan Road, Nanjing 210037, PR China.
| | - Yang Yu
- College of Biology and the Environment, Nanjing Forestry University, 159 Longpan Road, Nanjing 210037, PR China
| | - Jiangang Han
- College of Biology and the Environment, Nanjing Forestry University, 159 Longpan Road, Nanjing 210037, PR China
| | - Ying Guo
- College of Biology and the Environment, Nanjing Forestry University, 159 Longpan Road, Nanjing 210037, PR China
| | - Zhen Yang
- School of Chemistry and Materials Science, Nanjing Normal University, 1 Wenyuan Road, Nanjing 210023, PR China.
| | - Qianqian Shang
- Institute of Chemical Industry of Forest Products, Chinese Academy of Forestry, Key Lab of Biomass Energy and Material, Jiangsu Province, National Engineering Lab for Biomass Chemical Utilization, Key Lab on Forest Chemical Engineering, State Forestry Administration, Nanjing 210042, PR China
| | - Chengguo Liu
- Institute of Chemical Industry of Forest Products, Chinese Academy of Forestry, Key Lab of Biomass Energy and Material, Jiangsu Province, National Engineering Lab for Biomass Chemical Utilization, Key Lab on Forest Chemical Engineering, State Forestry Administration, Nanjing 210042, PR China.
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5
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Ashrafi M, Borzuie H, Bagherian G, Chamjangali MA, Nikoofard H. Artificial neural network and multiple linear regression for modeling sorption of Pb2+ ions from aqueous solutions onto modified walnut shell. SEP SCI TECHNOL 2019. [DOI: 10.1080/01496395.2019.1577437] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Motahare Ashrafi
- College of Chemistry, Shahrood University of Technology, Shahrood, Iran
| | - Hadis Borzuie
- College of Chemistry, Shahrood University of Technology, Shahrood, Iran
| | | | | | - Hossein Nikoofard
- College of Chemistry, Shahrood University of Technology, Shahrood, Iran
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6
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Zhang Y, Zheng Z, Yang X, Pan X, Yin L, Huang X, Li Q, Shu Y, Zhang Q, Wang K. A sensitive and rapid radiolabelling method for the in vivo pharmacokinetic study of lentinan. Food Funct 2018; 9:3114-3125. [PMID: 29876541 DOI: 10.1039/c8fo00272j] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
The aim of this study is to establish a rapid and sensitive method for detecting lentinan (LNT) in biosamples and to evaluate the pharmacokinetics of LNT in mice and rats. A diethylenetriaminepentaacetic acid (DTPA) derivative of LNT (DTPA-LNT) was synthesized first to allow labelling with 99m-technetium (99mTc). After purification and identification, 99mTc-DTPA-LNT was intravenously administered to mice (2 mg kg-1) and rats at different doses (0.5, 2 and 8 mg kg-1). The results showed that the 99mTc-labelling method was suitable for the quantification of the LNT concentration in biological samples, with satisfactory linearity (r2 > 0.998), precision (<7%), accuracy (95.01-104.51%) and total recovery (∼90%). The blood concentration-time profiles of 99mTc-DTPA-LNT were consistent with the two-compartment model and showed a rapid distribution phase and a slow elimination, and no significant difference in the blood level of LNT was found among the tested doses (0.5, 2 and 8 mg kg-1). LNT was predominantly incorporated into the liver and spleen, and there was a small amount of aggregation in the bile, kidneys, lungs and stomach. Approximately 40% of the administered radioactivity was detected in urine and faeces within 24 h post-dosing. In addition, SPECT imaging of 99mTc-DTPA-LNT was performed to visually reveal the pharmacokinetic characteristics of LNT. These findings provide a reference for further study and for use of LNT and other β-glucans.
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Affiliation(s)
- Yu Zhang
- Department of Pharmacy, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 430030 Wuhan, China
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7
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Selkälä T, Sirviö JA, Lorite GS, Liimatainen H. Anionically Stabilized Cellulose Nanofibrils through Succinylation Pretreatment in Urea-Lithium Chloride Deep Eutectic Solvent. CHEMSUSCHEM 2016; 9:3074-3083. [PMID: 27739652 DOI: 10.1002/cssc.201600903] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2016] [Indexed: 05/03/2023]
Abstract
Deep eutectic solvents (DESs) are green chemicals that have the potential to replace traditional solvents in chemical reactions. In this study, urea-LiCl DES was used successfully as a reaction medium in the anionic functionalization of wood cellulose with succinic anhydride. The effects of reaction temperature and time on the carboxyl content and yield were evaluated. The analyses of the degree of polymerization and crystallinity revealed that the DES was a nondegrading and nondissolving reaction medium. Three samples with the highest carboxyl contents were further nanofibrillated with a microfluidizer to diameters of 2-7 nm, as observed by atomic force microscopy. Samples treated at 70-80 °C for 2 h gave the best outcome and resulted in highly viscose and transparent gels. The sample treated at 90 °C contained larger nanoparticles and larger aggregates owing to the occurrence of possible side reactions but resulted in better thermal stability.
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Affiliation(s)
- Tuula Selkälä
- Fibre and Particle Engineering Research Unit, University of Oulu, P.O. Box 4300, FI-90014, Finland
| | - Juho Antti Sirviö
- Fibre and Particle Engineering Research Unit, University of Oulu, P.O. Box 4300, FI-90014, Finland
| | - Gabriela S Lorite
- Microelectronics Research Unit, University of Oulu, P.O. Box 4500, FI-90014, Finland
| | - Henrikki Liimatainen
- Fibre and Particle Engineering Research Unit, University of Oulu, P.O. Box 4300, FI-90014, Finland
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8
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Ma Y, Hou CJ, Fa HB, Huo DQ, Yang M. Synthesis and antioxidant property of hydroxycinnamoyl maltodextrin derivatives. Int J Food Sci Technol 2016. [DOI: 10.1111/ijfs.13226] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Yi Ma
- Key Laboratory of Biorheology Science and Technology; Ministry of Education; College of Bioengineering; Chongqing University; Chongqing 400044 China
- Liquor Making Biology Technology and Application of Key Laboratory of Sichuan Province; College of Bioengineering; Sichuan University of Science and Engineering; Zigong 643000 China
| | - Chang-Jun Hou
- Key Laboratory of Biorheology Science and Technology; Ministry of Education; College of Bioengineering; Chongqing University; Chongqing 400044 China
| | - Huan-Bao Fa
- Key Laboratory of Biorheology Science and Technology; Ministry of Education; College of Bioengineering; Chongqing University; Chongqing 400044 China
| | - Dan-Qun Huo
- Key Laboratory of Biorheology Science and Technology; Ministry of Education; College of Bioengineering; Chongqing University; Chongqing 400044 China
| | - Mei Yang
- Key Laboratory of Biorheology Science and Technology; Ministry of Education; College of Bioengineering; Chongqing University; Chongqing 400044 China
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9
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Wu H, Liu Z, Yang H, Li A. Evaluation of chain architectures and charge properties of various starch-based flocculants for flocculation of humic acid from water. WATER RESEARCH 2016; 96:126-135. [PMID: 27038383 DOI: 10.1016/j.watres.2016.03.055] [Citation(s) in RCA: 83] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2016] [Revised: 03/21/2016] [Accepted: 03/24/2016] [Indexed: 06/05/2023]
Abstract
Three different starch-based flocculants with various chain architectures and charge properties have been prepared through etherification, graft copolymerization, or their combination. Two of the flocculants (starch-graft-poly[(2-methacryloyloxyethyl) trimethyl ammonium chloride] and starch-3-chloro-2-hydroxypropyl triethyl ammonium chloride, denoted as STC-g-PDMC and STC-CTA respectively) are cationic, and another one (carboxymethyl starch-graft-poly[(2-methacryloyloxyethyl) trimethyl ammonium chloride], denoted as CMS-g-PDMC) is amphoteric. Those three flocculants have shown far different flocculation efficiency and floc properties for the removal of humic acid (HA) from water due to their distinct structural features. The effects of pH, flocculant dose, and initial HA concentration have been studied systematically. Accordingly, STC-g-PDMC and CMS-g-PDMC with strongly cationic branch chains have much better flocculation performance than polyaluminum chloride (PAC) and STC-CTA, the latter of which features linear chain architecture and strongly cationic pieces lying on its chain backbone. It indicates that the architecture of cationic branch chains plays an important role in HA flocculation due to their significantly enhanced bridging effects. Moreover, STC-g-PDMC has higher HA removal efficiency and better floc properties than CMS-g-PDMC, suggesting that charge neutralization effects make notable contributions to HA removal and that the additional anionic pieces on CMS-g-PDMC can weaken its flocculation performance. In addition, STC-g-PDMC used as coagulant aid for PAC has also been tried, which observably reduces the optimal dose of the inorganic coagulant.
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Affiliation(s)
- Hu Wu
- State Key Laboratory of Pollution Control and Resource Reuse, School of Environment, Nanjing University, Nanjing 210023, PR China
| | - Zhouzhou Liu
- State Key Laboratory of Pollution Control and Resource Reuse, School of Environment, Nanjing University, Nanjing 210023, PR China
| | - Hu Yang
- State Key Laboratory of Pollution Control and Resource Reuse, School of Environment, Nanjing University, Nanjing 210023, PR China.
| | - Aimin Li
- State Key Laboratory of Pollution Control and Resource Reuse, School of Environment, Nanjing University, Nanjing 210023, PR China
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10
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Santos FAD, Iulianelli GCV, Tavares MIB. The Use of Cellulose Nanofillers in Obtaining Polymer Nanocomposites: Properties, Processing, and Applications. ACTA ACUST UNITED AC 2016. [DOI: 10.4236/msa.2016.75026] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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11
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Kutyreva MP, Gataulina AR, Ulakhovich NA, Terekhova NV, Kutyrev GA. Synthesis and spectral characteristics of 2,2-bis(hydroxymethyl)propionic acid derivatives as model compounds for the estimation of properties of modified hyperbranched polyesters polyols. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2015. [DOI: 10.1134/s1070428015100036] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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12
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Vaidya AA, Gaugler M, Smith DA. Green route to modification of wood waste, cellulose and hemicellulose using reactive extrusion. Carbohydr Polym 2015; 136:1238-50. [PMID: 26572467 DOI: 10.1016/j.carbpol.2015.10.033] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2015] [Revised: 09/21/2015] [Accepted: 10/11/2015] [Indexed: 11/19/2022]
Abstract
A large volume of wood waste is produced in timber processing industry which traditionally used in low value applications. Here, value addition to the wood waste (Sander dust) and cellulose, hemicellulose isolated thereof by functionalisation using cyclic anhydrides in a solvent-free and green reactive extrusion process is reported. The effect of extrusion temperature, catalyst and different weight ratios of Sander dust (SD):succinic anhydride (SA) on the esterification reaction is evaluated. The esterified products were characterised by the acid value, degree of substitution (DS), Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), solid state (13)C NMR and thermo-gravimetric analysis (TGA). Under optimum extrusion conditions, mixed esters are formed, with highest acid value obtained for succinylation of cellulose (0.122 g/g at DS of 0.350) which is two times higher compared to succinylated SD (0.059 g/g at a weight gain of 0.452) and hemicellulose (0.043 g/g at DS of 0.290). The reactivity trend for individual anhydride was: (1) SA-Cellulose>SD>hemicellulose; (2) maleic anhydride (MA)-SD>hemicellulose>cellulose and (3) dodecenyl succinic anhydride (DDSA)-SD ≈ cellulose ≫ hemicellulose. The pendant free carboxyl groups generated through functionalisation of wood waste, cellulose and hemicellulose without the presence of polymeric carriers will allow more tailored or targeted modification of wood-plastic composites.
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Affiliation(s)
- Alankar A Vaidya
- Scion, Te Papa Tipu Innovation Park, 49 Sala Street, Rotorua 3046, New Zealand.
| | - Marc Gaugler
- Scion, Te Papa Tipu Innovation Park, 49 Sala Street, Rotorua 3046, New Zealand
| | - Dawn A Smith
- Scion, Te Papa Tipu Innovation Park, 49 Sala Street, Rotorua 3046, New Zealand
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13
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Removal of cadmium(II) from aqueous solutions by chemically modified maize straw. Carbohydr Polym 2014; 115:177-85. [PMID: 25439883 DOI: 10.1016/j.carbpol.2014.08.041] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2014] [Revised: 08/05/2014] [Accepted: 08/09/2014] [Indexed: 11/23/2022]
Abstract
A new regenerable adsorbent was successfully prepared by modifying maize straw (MS) with succinic anhydride in xylene. The succinylated-maize straw (S-MS) was characterized by FTIR, solid-state MAS (13)C NMR spectroscopy, SEM-EDX and point of zero charge analysis. NaS-MS was successfully obtained after deprotonating the carboxylic acid groups of S-MS by Na2CO3 solution. Batch experiments were carried out with NaS-MS for the removal of Cd(II). The effects of pH, adsorbent dosage, contact time, initial concentration and temperature were investigated. The experimental data were best described by a pseudo-second-order kinetics and Langmuir adsorption models. Thermodynamic parameters (ΔG, ΔH, and ΔS) were also calculated from data obtained from experiments performed to study the effect of temperatures. NaS-MS could be regenerated at least five times in saturated NaCl solution without any loss. Furthermore, ∼97% of adsorbed Cd(II) ions could be recovered as the metal oxide. Finally, the adsorption mechanism of NaS-MS was discussed.
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Lin R, Li H, Long H, Su J, Huang W, Wang S. Optimization of lipase-catalyzed rosin acid starch synthesis by response surface methodology. ACTA ACUST UNITED AC 2014. [DOI: 10.1016/j.molcatb.2014.04.010] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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15
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Hu X, Wei B, Zhang B, Xu X, Jin Z, Tian Y. Synthesis and characterization of dextrin monosuccinate. Carbohydr Polym 2013; 97:111-5. [DOI: 10.1016/j.carbpol.2013.04.054] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2013] [Revised: 04/10/2013] [Accepted: 04/13/2013] [Indexed: 01/13/2023]
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16
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Functional ionic liquids for hydrolysis of lignocellulose. Carbohydr Polym 2013; 97:172-6. [DOI: 10.1016/j.carbpol.2013.04.061] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2013] [Revised: 04/16/2013] [Accepted: 04/17/2013] [Indexed: 11/19/2022]
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17
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Zhang G, Huang K, Jiang X, Huang D, Yang Y. Acetylation of rice straw for thermoplastic applications. Carbohydr Polym 2013; 96:218-26. [DOI: 10.1016/j.carbpol.2013.03.069] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2012] [Revised: 03/22/2013] [Accepted: 03/23/2013] [Indexed: 11/30/2022]
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18
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Liao Z, Huang Z, Hu H, Zhang Y, Tan Y. Microscopic structure and properties changes of cassava stillage residue pretreated by mechanical activation. BIORESOURCE TECHNOLOGY 2011; 102:7953-8. [PMID: 21680177 DOI: 10.1016/j.biortech.2011.05.067] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2011] [Revised: 05/15/2011] [Accepted: 05/24/2011] [Indexed: 05/08/2023]
Abstract
This study has focused on the pretreatment of cassava stillage residue (CSR) by mechanical activation (MA) using a self-designed stirring ball mill. The changes in surface morphology, functional groups and crystalline structure of pretreated CSR were examined by using scanning electron microscopy (SEM), Fourier transform infrared (FTIR) spectroscopy and X-ray diffraction (XRD) under reasonable conditions. The results showed that MA could significantly damage the crystal structure of CSR, resulting in the variation of surface morphology, the increase of amorphous region ratio and hydrogen bond energy, and the decrease in crystallinity and crystalline size. But no new functional groups generated during milling, and the crystal type of cellulose in CSR still belonged to cellulose I after MA.
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Affiliation(s)
- Zhengda Liao
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, PR China
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19
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Alkaline hydrolysis and flocculation properties of acrylamide-modified cellulose polyelectrolytes. Carbohydr Polym 2011. [DOI: 10.1016/j.carbpol.2011.04.025] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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20
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Pereira FV, Gurgel LVA, Gil LF. Removal of Zn2+ from aqueous single metal solutions and electroplating wastewater with wood sawdust and sugarcane bagasse modified with EDTA dianhydride (EDTAD). JOURNAL OF HAZARDOUS MATERIALS 2010; 176:856-863. [PMID: 20047793 DOI: 10.1016/j.jhazmat.2009.11.115] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2009] [Revised: 11/02/2009] [Accepted: 11/22/2009] [Indexed: 05/28/2023]
Abstract
This work describes the preparation of a new chelating material derived from wood sawdust, Manilkara sp., and not only the use of a new support, but also a chemically modified sugarcane bagasse synthesized in our previous work to remove Zn(2+) from aqueous solutions and electroplating wastewater. The first part describes the chemical modification of wood sawdust and sugarcane bagasse using ethylenediaminetetraacetic dianhydride (EDTAD) as modifying agent in order to introduce carboxylic acid and amine functional groups into these materials. The obtained materials such as the modified sugarcane bagasse, EB, and modified wood sawdust, ES were then characterized by infrared spectroscopy (IR) and CHN. The second part evaluates the adsorption capacity of Zn(2+) by EB and ES from aqueous single metal solutions and real electroplating wastewater, which concentration was determined through direct titration with EDTA and inductively coupled plasma (ICP-OES). Adsorption isotherms were developed using Langmuir model. Zn(2+) adsorption capacities were found to be 80 mg/g for ES and 105 mg/g for EB whereas for the industrial wastewater these values were found to be 47 mg/g for ES and 45 mg/g for EB. Zn(2+) adsorption in the wastewater was found to be lower than in Zn(2+) spiked solution due to the competition between other cations and/or interference of other ions, mainly Ca(2+) and Cl(-) that were present in the wastewater.
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Affiliation(s)
- Flaviane Vilela Pereira
- Departamento de Química, Instituto de Ciências Exatas e Biológicas, Universidade Federal de Ouro Preto, Campus Universitário Morro do Cruzeiro, 35400-000, Ouro Preto, Minas Gerais, Brazil
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Ma N, Chen S, Liu X, Yang Y. Preparation of an aminated bagasse fiber and its mercury adsorption behavior. J Appl Polym Sci 2010. [DOI: 10.1002/app.32174] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Wang ZM, Li L, Xiao KJ, Wu JY. Homogeneous sulfation of bagasse cellulose in an ionic liquid and anticoagulation activity. BIORESOURCE TECHNOLOGY 2009; 100:1687-1690. [PMID: 18973999 DOI: 10.1016/j.biortech.2008.09.002] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2008] [Revised: 08/30/2008] [Accepted: 09/02/2008] [Indexed: 05/27/2023]
Abstract
Homogeneous sulfation of bagasse cellulose (BC) with chlorosulfonic acid-dimethylformamide was accomplished in an ionic liquid 1-butyl-3-methylimidazolium chloride ([C(4)mim]Cl). The BCS products from the sulfation had degrees of substitution (DS) in the range of 0.52-2.95 and a simultaneous substitution pattern at C-6, C-2 and C-3 positions. The sulfated BCS attained significant anticoagulation activity, causing a dose-dependent prolongation of coagulation time and inhibition of FIIa and FXa activities in human plasma. The anticoagulation activity of BCS showed a positive correlation with DS, and some of the activity indexes exceeded those of heparin.
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Affiliation(s)
- Zhao-Mei Wang
- Research Institute of Light Industry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
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