Effect of lignin structure on adsorbable organic halogens formation in chlorine dioxide bleaching
Adsorbable organic halogens (AOX) are formed in pulp bleaching as a result of the reaction of residual lignin with chlorine dioxide. The natural structure of lignin is very complex and it tends to be damaged by various extraction methods. All the factors can affect the study about the mechanism of A...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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The Royal Society
2019-02-01
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| Series: | Royal Society Open Science |
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| Online Access: | https://royalsocietypublishing.org/doi/pdf/10.1098/rsos.182024 |
| _version_ | 1818549997975633920 |
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| author | Lisheng Shi Jiayan Ge Shuangxi Nie Chengrong Qin Shuangquan Yao |
| author_facet | Lisheng Shi Jiayan Ge Shuangxi Nie Chengrong Qin Shuangquan Yao |
| author_sort | Lisheng Shi |
| collection | DOAJ |
| description | Adsorbable organic halogens (AOX) are formed in pulp bleaching as a result of the reaction of residual lignin with chlorine dioxide. The natural structure of lignin is very complex and it tends to be damaged by various extraction methods. All the factors can affect the study about the mechanism of AOX formation in the reaction of lignin with chlorine dioxide. Lignin model compounds, with certain structures, can be used to study the role of different lignin structures on AOX formation. The effect of lignin structure on AOX formation was determined by reacting phenolic and non-phenolic lignin model compound with a chlorine dioxide solution. Vanillyl alcohol (VA) and veratryl alcohol (VE) were selected for the phenolic and non-phenolic lignin model compound, respectively. The pattern consumption of lignin model compounds suggests that both VA and VE began reacting with chlorine dioxide within 10 min and then gradually steadied. The volume of AOX produced by VE was significantly higher than that produced by VA for a given initial lignin model compound concentration. In a solution containing a combination of VA and VE in chlorine dioxide, VE was the dominant producer of AOX. This result indicates that the non-phenolic lignin structure was more easily chlorinated, while the phenolic lignin structure was mainly oxidized. In addition, AOX content produced in the combined experiments exceeded the total content of the two separate experiments. It suggested that the combination of phenolic and non-phenolic lignin structure can promote AOX formation. |
| first_indexed | 2024-12-12T08:40:35Z |
| format | Article |
| id | doaj.art-48cdd2e9fe7c4c44a880cc0908c68bce |
| institution | Directory Open Access Journal |
| issn | 2054-5703 |
| language | English |
| last_indexed | 2024-12-12T08:40:35Z |
| publishDate | 2019-02-01 |
| publisher | The Royal Society |
| record_format | Article |
| series | Royal Society Open Science |
| spelling | doaj.art-48cdd2e9fe7c4c44a880cc0908c68bce2022-12-22T00:30:47ZengThe Royal SocietyRoyal Society Open Science2054-57032019-02-016210.1098/rsos.182024182024Effect of lignin structure on adsorbable organic halogens formation in chlorine dioxide bleachingLisheng ShiJiayan GeShuangxi NieChengrong QinShuangquan YaoAdsorbable organic halogens (AOX) are formed in pulp bleaching as a result of the reaction of residual lignin with chlorine dioxide. The natural structure of lignin is very complex and it tends to be damaged by various extraction methods. All the factors can affect the study about the mechanism of AOX formation in the reaction of lignin with chlorine dioxide. Lignin model compounds, with certain structures, can be used to study the role of different lignin structures on AOX formation. The effect of lignin structure on AOX formation was determined by reacting phenolic and non-phenolic lignin model compound with a chlorine dioxide solution. Vanillyl alcohol (VA) and veratryl alcohol (VE) were selected for the phenolic and non-phenolic lignin model compound, respectively. The pattern consumption of lignin model compounds suggests that both VA and VE began reacting with chlorine dioxide within 10 min and then gradually steadied. The volume of AOX produced by VE was significantly higher than that produced by VA for a given initial lignin model compound concentration. In a solution containing a combination of VA and VE in chlorine dioxide, VE was the dominant producer of AOX. This result indicates that the non-phenolic lignin structure was more easily chlorinated, while the phenolic lignin structure was mainly oxidized. In addition, AOX content produced in the combined experiments exceeded the total content of the two separate experiments. It suggested that the combination of phenolic and non-phenolic lignin structure can promote AOX formation.https://royalsocietypublishing.org/doi/pdf/10.1098/rsos.182024lignin model compoundschlorine dioxideadsorbable organic halogensbleaching |
| spellingShingle | Lisheng Shi Jiayan Ge Shuangxi Nie Chengrong Qin Shuangquan Yao Effect of lignin structure on adsorbable organic halogens formation in chlorine dioxide bleaching Royal Society Open Science lignin model compounds chlorine dioxide adsorbable organic halogens bleaching |
| title | Effect of lignin structure on adsorbable organic halogens formation in chlorine dioxide bleaching |
| title_full | Effect of lignin structure on adsorbable organic halogens formation in chlorine dioxide bleaching |
| title_fullStr | Effect of lignin structure on adsorbable organic halogens formation in chlorine dioxide bleaching |
| title_full_unstemmed | Effect of lignin structure on adsorbable organic halogens formation in chlorine dioxide bleaching |
| title_short | Effect of lignin structure on adsorbable organic halogens formation in chlorine dioxide bleaching |
| title_sort | effect of lignin structure on adsorbable organic halogens formation in chlorine dioxide bleaching |
| topic | lignin model compounds chlorine dioxide adsorbable organic halogens bleaching |
| url | https://royalsocietypublishing.org/doi/pdf/10.1098/rsos.182024 |
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