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Evaluation of Prosopis juliflora as a potential feedstock for the production of sodium lignosulfonate from the spent liquor of a laboratory digester
Journal of Wood Chemistry and Technology ( IF 1.7 ) Pub Date : 2020-08-28 , DOI: 10.1080/02773813.2020.1809677
Kaushik Nath 1 , Suresh C. Panchani 1 , Tejal M. Patel 1 , Haresh K. Dave 1 , Vinay B. Patel 1 , Kamlesh K. Tiwari 2 , Narottam Sahoo 3
Affiliation  

Abstract Chopped stems of Prosopis juliflora, an invasive xerophyte, were digested in a laboratory digester following alkaline sulfite pulping process to generate spent liquor whereby lignin underwent sulfonation to produce sodium lignosulfonate (SLS). SLS was concentrated from the spent liquor by ultrafiltration. Raw wood was featured by high lignin (23.5%), low extractives (1.0%), low wax (0.41), and low ash (2.25%) content thus making it an ideal feedstock to produce lignosulfonates with appreciable physico-chemical property and relatively high mechanical strength. Attempts were made to provide basic information on SLS structure and structural changes that might occur during pulping of P. juliflora under the present experimental conditions. Spectral and X-ray diffraction studies on as-produced SLS revealed substantial depolymerization and structural modification of lignin during sulfite pulping. The derived SLS had higher crystallinity index than the feedstock wood. Effect of average size of raw wood chip and dose of sodium sulfite in the overall yield of pulp and SLS along with the kappa number of the pulp were also analyzed. Findings from this study would serve to cultivate a better understanding of the potential of P. juliflora as a feedstock, so far unexplored, to produce SLS − a value-added product with numerous commercial applications. The use of this particular plant species in paper and pulp industry could also be considered as an effective means of integrated agro management in rural areas.

中文翻译:

评价胡杨作为从实验室消化器废液生产木质素磺酸钠的潜在原料

摘要 切碎的 Prosopis juliflora 茎是一种侵入性旱生植物,在碱性亚硫酸盐制浆过程后,在实验室消化器中消化以产生废液,其中木质素经历磺化以产生木质素磺酸钠 (SLS)。通过超滤从废液中浓缩SLS。原木具有高木质素 (23.5%)、低提取物 (1.0%)、低蜡 (0.41) 和低灰分 (2.25%) 的特点,因此使其成为生产木质素磺酸盐的理想原料,具有可观的理化性质和相对机械强度高。试图提供有关 SLS 结构和结构变化的基本信息,这些信息可能在当前实验条件下的 P. juliflora 制浆过程中发生。对所生产的 SLS 的光谱和 X 射线衍射研究揭示了亚硫酸盐制浆过程中木质素的大量解聚和结构改性。衍生的 SLS 具有比原料木材更高的结晶度指数。还分析了原木片的平均尺寸和亚硫酸钠剂量对纸浆和 SLS 总产量的影响以及纸浆的卡伯值。这项研究的结果将有助于更好地了解 P. juliflora 作为原料的潜力,迄今为止尚未探索,以生产 SLS——一种具有众多商业​​应用的增值产品。在造纸和纸浆工业中使用这种特殊植物品种也可被视为农村地区综合农业管理的有效手段。衍生的 SLS 具有比原料木材更高的结晶度指数。还分析了原木片的平均尺寸和亚硫酸钠剂量对纸浆和 SLS 总产量的影响以及纸浆的卡伯值。这项研究的结果将有助于更好地了解 P. juliflora 作为原料的潜力,迄今为止尚未探索,以生产 SLS——一种具有众多商业​​应用的增值产品。在造纸和纸浆工业中使用这种特殊植物物种也可以被视为农村地区综合农业管理的有效手段。衍生的 SLS 具有比原料木材更高的结晶度指数。还分析了原木片的平均尺寸和亚硫酸钠剂量对纸浆和 SLS 总产量的影响以及纸浆的卡伯值。这项研究的结果将有助于更好地了解 P. juliflora 作为原料的潜力,迄今为止尚未探索,以生产 SLS——一种具有众多商业​​应用的增值产品。在造纸和纸浆工业中使用这种特殊植物品种也可被视为农村地区综合农业管理的有效手段。这项研究的结果将有助于更好地了解 P. juliflora 作为原料的潜力,迄今为止尚未探索,以生产 SLS——一种具有众多商业​​应用的增值产品。在造纸和纸浆工业中使用这种特殊植物品种也可被视为农村地区综合农业管理的有效手段。这项研究的结果将有助于更好地了解 P. juliflora 作为原料的潜力,迄今为止尚未探索,以生产 SLS——一种具有众多商业​​应用的增值产品。在造纸和纸浆工业中使用这种特殊植物品种也可被视为农村地区综合农业管理的有效手段。
更新日期:2020-08-28
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