Ramin Vaysi; Behrooz Malekian; Masih Masoudifar
Abstract
The aim of this study was accomplished on identification and comparison of chemical compounds in heart wood and bark of mulberry tree. For this purpose, the samples were chosen randomly from heart wood and bark of mulberry tree in Nowshahr's forest region. Then, flour and ash were provided from heart ...
Read More
The aim of this study was accomplished on identification and comparison of chemical compounds in heart wood and bark of mulberry tree. For this purpose, the samples were chosen randomly from heart wood and bark of mulberry tree in Nowshahr's forest region. Then, flour and ash were provided from heart wood and bark of mulberry tree by TAPPI standards. For measured metallic ions, first the mineral compound of ash dissolved by 65% nitric acid and for its identified by atomic absorption method. The results showed that zinc ion in heart wood of mulberry tree was more than its bark, but manganese and iron ions were lower and its cupper ion was same. Then extractives were separated from wood flour by acetone and extractives residue transferred to glass vial and was added BSTFA reactive agent to it. After samples prepared, samples were injected to the GC/MS device for it analysis. Identification of compounds was done by retention time of each compound, calculation of Quats index and Adams table. The result of GC-MS showed that there are 30 compounds in bark of mulberry tree, that beta-Tocopherol(40.86%), bis (2-ethylhexyl)phthalate(11.2%), 9,12-Octadecadienoic acid(9.12%) and Triphenyl phosphine(9.82 were important components. 93 components identified heart wood of mulberry tree that resorcinol(79.47), methyl diphenyl methane(12.06%), p-xylene(0.06%) and gibberllin A3 (0.15%)di-limonene, as important components. These compounds can very important in durability and consumption its. Comparison of chromatograms showed that 1,2-benzenedicarboxylic acid was exists as a common components in heart wood and bark of mulberry tree.
Chemistry of wood
Ramin Vaysi
Abstract
The aim of this study was accomplished on identification and comparison of chemical compounds in wood of maple tree. For this purpose, the samples were chosen randomly from persuan maple and Caucasian maple tree in Nowshahr's forest region. Then, flour and ash were provided from heartwood, sapwood of ...
Read More
The aim of this study was accomplished on identification and comparison of chemical compounds in wood of maple tree. For this purpose, the samples were chosen randomly from persuan maple and Caucasian maple tree in Nowshahr's forest region. Then, flour and ash were provided from heartwood, sapwood of maple tree by TAPPI standards. For measured metallic ions, by atomic absorption method. The ions results showed that mn, co, fe, zn, and cu ions in Caucasian maple were more than persuan maple, but k ion was lower. Then extractives were separated from wood flour by acetone and extractives residue transferred to glass vial and was added BSTFA reactive agent to it. After samples prepared, samples were injected to the GC/MS device for it analysis. Identification of compounds was done by retention time of each compound, calculation of Quats index and Adams table. The result of GC-MS showed that there are 39 compounds in persuan maple, that benzaldehyde, bis (2-ethylhexyl)phthalate, gibberllin A3 and 1,2-benzenedicarboxylic acid were important components. 24 components identified in Acer leatum that di-limonene, bis(2-ethylhexyl)phthalate,alpha- terpen and alpha-pinene as important components. Comparison of chromatograms showed that di-limonene and bis(2-ethylhexyl)phthalate were exists as 2 common components in persuan maple and Caucasian maple tree. These compounds can very important in durability and consumption its.
Chemistry of wood
Ramin Vaysi
Abstract
The aim of study was accomplished on identification and comparison of chemical compounds in wood and bark of oak. For this purpose, the samples were chosen randomly from oak in Nowshahr forest region. Then, flour and ash were provided from heart wood, sap wood and bark of oak by TAPPI standards. For ...
Read More
The aim of study was accomplished on identification and comparison of chemical compounds in wood and bark of oak. For this purpose, the samples were chosen randomly from oak in Nowshahr forest region. Then, flour and ash were provided from heart wood, sap wood and bark of oak by TAPPI standards. For measured metallic ions, first the mineral compound of ash dissolved by 65% nitric acid and for it's identified by atomic adsorption method. The results showed that Fe, Zn and Cu ions in wood of oak were more than its bark and its Mn ion was lower. Then extractives were separated from wood flour by acetone and extractives residue transferred to glassy vial and was added BSTFA reactor to it. After samples prepared, its were injected by GC/MS for analyze. Identification of compounds was done by retention time of each compound, calculation of quartz index and Adams table. The result of GC-MS showed that there are 10, 42 and10 compounds in heart wood, sap wood and bark of oak, respectively. Comparison of chromatograms showed that Decan, Dodecan, Tetradecane and Bis(2-ethylhexyl)phthalate were exists as 4 common components in bark, sap wood and heart wood of oak and Silicic acid and 1,2-Benzenedicarboxylic acid were exists as 2 common components in bark and sap wood of oak. These compounds can very important in durability and consumption its.
Pulp and paper
Ramin Veisi; Iman Khajeh ali
Abstract
This study and it aim was accomplished on extraction, identification and removal of metallic ions and resins in bleached Bagass pulp by ECF stages. For this purpose, the samples were randomly selected from soda unbleached pulp of Pars mill. The first, pulp flour provided and measured ash and extractive ...
Read More
This study and it aim was accomplished on extraction, identification and removal of metallic ions and resins in bleached Bagass pulp by ECF stages. For this purpose, the samples were randomly selected from soda unbleached pulp of Pars mill. The first, pulp flour provided and measured ash and extractive percent by the TAPPI standards. Then the mineral compounds dissolved in 65% nitric acid and the mineral compounds of pulps identificated by Atomic adsorption method. The results of this study showed that the most of Pb, Cu, Zn ions were in H2O2 bleached pulp, the most of Ni ion in OD(Ep)P stage and the most of Fe ion in unbleached soda pulp. The results showed that OD(Ep)D stage decrease Fe ion and EH stage decrease Ni, Cu and Zn ions in pulps. The results of GC-MS diagram showed that 35 compounds were identified in unbleached soda pulp after cooking, that 1,2-Benzendicarboxylic acid, Hexadecanoic acid, Hexadecan, Octadecan, p-Xylene, 4-Hydroxy-4-Methyl-2-Pantanone,Ethylbenzen and Dodecan were important chemical components in samples. In generally, 17,12 and 14 compounds were identified in EH, OD(Ep)P and OD(Ep)D bleaching stages, respectively, so that, 1,2-Benzendicarboxylic acid and p-Xylene were 2 common and important chemical components in all samples and Octadecan and 9-Dodecanoic acid remove as two components from pulps after bleaching, too. The results showed that EH, OD(Ep)P and OD(Ep)D bleaching stages were very important in bleaching, removal of chemical components and brightness stability of soda pulps.