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Development of chemometric model for characterization of non-wood by FT-NIR data

Journal of Bioresources and Bioproducts 2020年第3期5卷 196-203页

作者： mohammad Nashir Uddin Taslima Ferdous Zahidul Islam m.Sarwar Jahan m.a.quaiyyum BCSIR Laboratories DhakaBangladesh Council of Scientific and Industrial Research(BCSIR)Dhaka 1205Bangladesh Department of Applied Chemistry and Chemical Engineering University of DhakaDhaka 1000Bangladesh

In this study,a model for prediction of lignocellulose components of agricultural residues has been developed with Fourier Transformed Near Infrared(FT-NIR)spectroscopy *** calibration techniques(Principal Component Regression(PCR)and Partial Least Square Regression(PLSR))were assessed for prediction of lignin,holocellulose,α-cellulose,pentosan and ash,and found the PLSR better for lignin,holocellulose andα-*** PCR also produced better results for quantification of pentosan and *** range(7000-5000 cm^(-1))showed more informative than other parts of the spectral *** PLSR showed maximum value of R^(2)(R^(2)=0.91%)for prediction of *** the prediction of pentosan,the PCR was better(R^(2)=0.68%).The PCR also showed better results(R^(2)=86%)for quantification of *** determine amount of lignin,the PLSR was the best(R^(2)=0.83%)when the spectral data were de-trained and smoothed with Savitzky-Golay(S-G)filtering *** prediction ofα-cellulose,the PLSR was the best model(R^(2)=0.94%)when the data were pretreated with mean *** the best alternatives inNear Infrared(NIR)data preprocessing and calibration techniques,methods for quantification of lignocellulose components of agricultural residues have been developed which is rapid,cost effective,and less chemical intensive and easily usable in pulp and paper industries and pulp testing laboratories.

关键词： Agricultural residue multivariate modeling Lignocellulose component

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Pulpwood Quality of the Second Generation Acacia auriculiformis

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Journal of Bioresources and Bioproducts 2019年第2期4卷 73-79页

作者： mdmoinul HAQUE m Nashir UDDIN m.a.quaiyyum Jannatun NAYEEm m Zahangir ALAm m Sarwar JAHAN Pulp and Paper Research Division Bangladesh Council of Scientific&Industrial Research LaboratoriesDhaka 1205Bangladesh Department of Applied Chemistry and Chemical Engineering University of DhakaDhaka 1205Bangladesh

The physical,chemical and fibre characteristics of the 6,8 and 10 years old akashmoni(Acacia auriculiformis)wood from the second generation seed and their suitability for pulping were assessed and compared with the wood of 10 years old from the first generation *** *** of 8 years old had the highestα-cellulose and lower lignin than those of 6 and 10 years old,which are similar to the first generation *** study also evaluated the effect of cooking time,temperature and active alkali on kraft *** most important influence factors for pulp yield and kappa number were active alkali charge and *** highest screened rejects were observed for young *** degree of the 1st generation was faster than that of the 2nd generation ***.

关键词： second generation Acacia auriculiformis α-cellulose wood density pulping active alkali and cooking time

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ALKALINE PULP OF CORN STALKS

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天津科技大学学报 2004年第A1期19卷 95-100页

作者： m. Sarwar Jahan m.AN. Russel S.A.N. Shamim A.I. mostafa md. Abdul quaiyyum Pulp and Paper research Division BCSIR Laboratories Dhaka Dr. Qudrat-E-Khuda Road Dhaka-1205 Bangladesh.Department of Applied Chemistry and Technology University of Dhaka DhakaPulp and Paper research Division BCSIR Laboratories Dhaka Dr. Qudrat-E-Khuda Road Dhaka-1205 Bangladesh.Department of Applied Chemistry and Technology University of Dhaka DhakaPulp and Paper research Division BCSIR Laboratories Dhaka Dr. Qudrat-E-Khuda Road Dhaka-1205 Bangladesh.Department of Applied Chemistry and Technology University of Dhaka DhakaPulp and Paper research Division BCSIR Laboratories Dhaka Dr. Qudrat-E-Khuda Road Dhaka-1205 Bangladesh.Department of Applied Chemistry and Technology University of Dhaka DhakaPulp and Paper research Division BCSIR Laboratories Dhaka Dr. Qudrat-E-Khuda Road Dhaka-1205 Bangladesh.Department of Applied Chemistry and Technology University of Dhaka Dhaka

Pulping of corn stalks was studied in soda, soda-anthraquinone (AQ), kraft and kraft-AQ processes. The time, temperature and alkali concentration were varied in soda process. In respect to kappa number and pulp yield, 1 hour cooking at 1400C in 14% alkali were best conditions for corn stalks pulping. Pulp yield was increased by 5.5% and kappa number was reduced by 4.4 points with an addition of 0.05% AQ in the soda liquor. Breaking length was better in soda-AQ process than soda process but tear strength was inferior. In the kraft process, pulp yield was increased with increasing sulphidity and decreasing active alkali. The effectiveness of AQ in the low and high sulphidity kraft process was studied. Results showed that AQ was more effective in low sulphidity than high sulphidity. Strength properties in kraft processes were better than the soda and soda-AQ processes.

关键词：碱性纸浆玉米淀粉苏打蒽醌硫化度牛皮纸破裂长度

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ALKALINE PULP OF CORN STALKS

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天津科技大学学报 2004年第S1期 97-102页

作者： m. Sarwar Jahan,m.AN. Russel,S.A.N. Shamim,A.I. mostafa,md. Abdul quaiyyum Pulp and Paper research Division BCSIR Laboratories Dhaka Dr. Qudrat-E-Khuda Road Dhaka-1205 Bangladesh.Department of Applied Chemistry and Technology University of Dhaka Dhaka Pulp and Paper research Division BCSIR Laboratories Dhaka Dr. Qudrat-E-Khuda Road Dhaka-1205 Bangladesh.Department of Applied Chemistry and Technology University of Dhaka Dhaka Pulp and Paper research Division BCSIR Laboratories Dhaka Dr. Qudrat-E-Khuda Road Dhaka-1205 Bangladesh.Department of Applied Chemistry and Technology University of Dhaka Dhaka Pulp and Paper research Division BCSIR Laboratories Dhaka Dr. Qudrat-E-Khuda Road Dhaka-1205 Bangladesh.Department of Applied Chemistry and Technology University of Dhaka Dhaka Pulp and Paper research Division BCSIR Laboratories Dhaka Dr. Qudrat-E-Khuda Road Dhaka-1205 Bangladesh.Department of Applied Chemistry and Technology University of Dhaka Dhaka

关键词： than length ALKALINE PULP OF CORN STALKS high

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