THERMAL STABILITY OF METAL-PITCH DEPOSITS FROM A SPRUCE THERMOMECHANICAL PULP BY USE OF A DIFFERENTIAL SCANNING CALORIMETER
Pitch-related deposition has been a significant issue in paper mills that produce wood-containing paper grades. A component analysis showed that a mill deposit sample was a mixture of wood resin, fiber, metal cations, and other inorganics. Based on the differential scanning calorimeter (DSC) method,...
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| Format: | Article |
| Language: | English |
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North Carolina State University
2010-07-01
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| Series: | BioResources |
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| Online Access: | http://ojs.cnr.ncsu.edu/index.php/BioRes/article/viewFile/BioRes_05_3_1923_Dai_Ni_Thermal_Stabilty_Metal_Pitch_Deposits/689 |
| _version_ | 1818346814418452480 |
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| author | Yonghao Ni Zhongguo Dai |
| author_facet | Yonghao Ni Zhongguo Dai |
| author_sort | Yonghao Ni |
| collection | DOAJ |
| description | Pitch-related deposition has been a significant issue in paper mills that produce wood-containing paper grades. A component analysis showed that a mill deposit sample was a mixture of wood resin, fiber, metal cations, and other inorganics. Based on the differential scanning calorimeter (DSC) method, some critical parameters, including pH, metal cations, and their interactions, on the thermal stability of pitch-related deposits were studied. The valency of metal cations determined the ability of capturing pitch the formation of deposits. Trivalent Al3+ or Fe3+ ions had much stronger effects than divalent Ca2+, Mg2+, or Mn2+. It was also found that a higher pH and trivalent Al3+ or Fe3+ increased the thermal stability of deposits formed in colloidal pitch solutions. |
| first_indexed | 2024-12-13T17:24:15Z |
| format | Article |
| id | doaj.art-0664f9a406404af98244f4591e9ea0ec |
| institution | Directory Open Access Journal |
| issn | 1930-2126 |
| language | English |
| last_indexed | 2024-12-13T17:24:15Z |
| publishDate | 2010-07-01 |
| publisher | North Carolina State University |
| record_format | Article |
| series | BioResources |
| spelling | doaj.art-0664f9a406404af98244f4591e9ea0ec2022-12-21T23:37:13ZengNorth Carolina State UniversityBioResources1930-21262010-07-015319231935THERMAL STABILITY OF METAL-PITCH DEPOSITS FROM A SPRUCE THERMOMECHANICAL PULP BY USE OF A DIFFERENTIAL SCANNING CALORIMETERYonghao NiZhongguo DaiPitch-related deposition has been a significant issue in paper mills that produce wood-containing paper grades. A component analysis showed that a mill deposit sample was a mixture of wood resin, fiber, metal cations, and other inorganics. Based on the differential scanning calorimeter (DSC) method, some critical parameters, including pH, metal cations, and their interactions, on the thermal stability of pitch-related deposits were studied. The valency of metal cations determined the ability of capturing pitch the formation of deposits. Trivalent Al3+ or Fe3+ ions had much stronger effects than divalent Ca2+, Mg2+, or Mn2+. It was also found that a higher pH and trivalent Al3+ or Fe3+ increased the thermal stability of deposits formed in colloidal pitch solutions.http://ojs.cnr.ncsu.edu/index.php/BioRes/article/viewFile/BioRes_05_3_1923_Dai_Ni_Thermal_Stabilty_Metal_Pitch_Deposits/689Pitch depositsExtractivesMetal cationsDifferential scanning calorimeter (DSC) |
| spellingShingle | Yonghao Ni Zhongguo Dai THERMAL STABILITY OF METAL-PITCH DEPOSITS FROM A SPRUCE THERMOMECHANICAL PULP BY USE OF A DIFFERENTIAL SCANNING CALORIMETER BioResources Pitch deposits Extractives Metal cations Differential scanning calorimeter (DSC) |
| title | THERMAL STABILITY OF METAL-PITCH DEPOSITS FROM A SPRUCE THERMOMECHANICAL PULP BY USE OF A DIFFERENTIAL SCANNING CALORIMETER |
| title_full | THERMAL STABILITY OF METAL-PITCH DEPOSITS FROM A SPRUCE THERMOMECHANICAL PULP BY USE OF A DIFFERENTIAL SCANNING CALORIMETER |
| title_fullStr | THERMAL STABILITY OF METAL-PITCH DEPOSITS FROM A SPRUCE THERMOMECHANICAL PULP BY USE OF A DIFFERENTIAL SCANNING CALORIMETER |
| title_full_unstemmed | THERMAL STABILITY OF METAL-PITCH DEPOSITS FROM A SPRUCE THERMOMECHANICAL PULP BY USE OF A DIFFERENTIAL SCANNING CALORIMETER |
| title_short | THERMAL STABILITY OF METAL-PITCH DEPOSITS FROM A SPRUCE THERMOMECHANICAL PULP BY USE OF A DIFFERENTIAL SCANNING CALORIMETER |
| title_sort | thermal stability of metal pitch deposits from a spruce thermomechanical pulp by use of a differential scanning calorimeter |
| topic | Pitch deposits Extractives Metal cations Differential scanning calorimeter (DSC) |
| url | http://ojs.cnr.ncsu.edu/index.php/BioRes/article/viewFile/BioRes_05_3_1923_Dai_Ni_Thermal_Stabilty_Metal_Pitch_Deposits/689 |
| work_keys_str_mv | AT yonghaoni thermalstabilityofmetalpitchdepositsfromasprucethermomechanicalpulpbyuseofadifferentialscanningcalorimeter AT zhongguodai thermalstabilityofmetalpitchdepositsfromasprucethermomechanicalpulpbyuseofadifferentialscanningcalorimeter |