Dissolving pulp from corn stalk residue and waste water of Merox unit
Dissolving pulp from corn stalk residue and waste water of Merox unit
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DOI：
10.1016/j.cej.2009.03.024
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发表时间：
2009-10-01
影响因子：
15.1
通讯作者：
Zeyghami, M.
中科院分区：
文献类型：
--
作者：
Behin, J.;Zeyghami, M.
本工作的目的是研究利用玉米秸秆残渣作为非木材材料、工业废水作为制浆液生产纤维素溶解级纸浆（α-纤维素）。伊朗克尔曼沙阿炼油厂的 Merox 装置获得的工业废水和当地农场获得的玉米秆残渣被用作实验的原材料。玉米秆在小型消化器中于 160 摄氏度下进行预水解过程 30 分钟。随后，将玉米秸秆进行牛皮纸制浆并在170℃下用工业废水制浆90分钟。每种混合物的漂白过程完成后，研究了所得纤维素溶解级纸浆的质量。实验室调查比较了以下重要参数：活性碱的影响。硫化物。工业废水的稀释比例对产率、卡伯值和聚合度等纸浆性能的影响。在最佳条件下，采用 20% 活性碱、25% 硫化物和 HEHP 漂白进行预水解/牛皮纸制浆，生产的溶解浆的 α-纤维素含量（94.8%）、聚合度（279）和灰分含量（0.75%）达到了可接受的水平。硫酸盐法制浆与工业废水制玉米秸秆制浆相比，α-纤维素含量提高到97.4%，聚合度为241，灰分含量为0.96%。两个实验的比较表明，在制浆过程中使用工业废水对于使用非木质材料的工业应用取得了令人满意的效果，在减少资本投资和运营成本的情况下生产出优质的产品，并且大大有助于木质原料的环境保护。 (C) 2009 Elsevier B.V. 保留所有权利。
The aim of this work was to study the production of cellulosic dissolving-grade pulp, alpha-cellulose, using corn stalk residue as non-wood material and industrial waste water as pulping liquid. Industrial waste water obtained from a Merox unit operating at the Kermanshah Oil Refinery in Iran and corn stalk residue obtained from local agricultural farms were used as raw materials for the experiment. The pre-hydrolysis process was performed on the corn stalk for 30 min at 160 degrees C in a mini-digester. Subsequently, the corn stalk was subjected to Kraft pulping and to pulping with industrial waste water at 170 degrees C over a period of 90 min. Upon completion of the bleaching process of each mixture, the quality of the resulting cellulosic dissolving-grade pulps was studied. The laboratory investigation compared the following parameters of importance: influence of active alkali. sulfidity. and dilution ratio of the industrial waste water on pulp properties such as yield, kappa number and degree of polymerization. Under optimum conditions, the pre-hydrolysis/Kraft pulping with 20% active alkali, 25% sulfidity, and HEHP bleaching resulted in acceptable levels of alpha-cellulose content (94.8%), degree of polymerization (279), and ash content (0.75%) for the produced dissolving pulp. The Kraft pulping was compared with the pulping of corn stalk with industrial waste water, which increased the alpha-cellulose content to 97.4%, with a degree of polymerization of 241 and an ash content of 0.96%. Comparison of both experiments indicates that using industrial waste water in the pulping process gives satisfactory results for industrial applications using a non-wood material, yields a quality product with reduced capital investment and operation costs, and considerably helps the, environmental preservation of wood-based raw materials. (C) 2009 Elsevier B.V. All rights reserved.