Abstract

A recent trend for converting a hydrophilic lignocellulosic material into oleophilic adsorbent could be achieved by using cationic surfactants. In the present work, the surface of sugarcane bagasse was modified by cationic surfactant cetyltrimethylammonium bromide, whereas sugarcane bagasse acquired hydrophobic properties. Further increase in hydrophobicity of sugarcane bagasse could be obtained by blending surfactant modified sugarcane bagasse with polystyrene waste. Sugarcane bagasse, surfactant modified bagasse and polystyrene waste/surfactant modified bagasse were characterized by different physical and chemical techniques. Remarkable changes in the structure of sugarcane bagasse as a result of the different treatment processes could be evidenced by FT-IR, SEM and XRD measurements. Moreover, elemental analysis, specific surface area as well as water absorption capacity results confirmed successful modification of sugarcane bagasse by both cetyltrimethylammonium bromide and polystyrene waste. Also, water absorption capacity experiments indicated that hydrophobic properties of the different samples increased in the order: polystyrene waste/surfactant modified bagasse > surfactant modified bagasse > sugarcane bagasse. The different samples were evaluated for removal of emulsified food oil from aqueous solutions. The effect of various parameters, e.g., blend constituents weight ratio, adsorbent dose, initial oil concentration, pH and contact time upon oil removal efficiency, was investigated. Isothermal studies revealed that oil adsorption fitted Freundlich model and thermodynamics studies showed that oil adsorption is spontaneous, random and exothermic.

Graphic abstract

中文翻译：

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使用聚苯乙烯和表面活性剂改性的甘蔗渣废料混合物从废水中分离乳化油

摘要

通过使用阳离子表面活性剂可以实现将亲水性木质纤维素材料转化为亲油性吸附剂的最新趋势。在目前的工作中，甘蔗渣的表面被阳离子表面活性剂十六烷基三甲基溴化铵改性，而甘蔗渣获得了疏水性。通过将表面活性剂改性的甘蔗渣与聚苯乙烯废料混合，可以进一步提高甘蔗渣的疏水性。通过不同的物理和化学技术对甘蔗渣，表面活性剂改性的蔗渣和聚苯乙烯废料/表面活性剂改性的蔗渣进行了表征。FT-IR，SEM和XRD测量结果表明，由于处理工艺的不同，甘蔗渣的结构发生了显着变化。而且，元素分析 比表面积和吸水率结果证实了十六烷基三甲基溴化铵和聚苯乙烯废料均成功地修饰了甘蔗渣。此外，吸水能力实验表明，不同样品的疏水性依次提高：聚苯乙烯废料/表面活性剂改性的蔗渣>表面活性剂改性的蔗渣>甘蔗渣。评价了不同样品从水溶液中去除乳化食用油的情况。研究了各种参数（例如共混物的重量比，吸附剂的剂量，初始油浓度，pH和接触时间）对除油效率的影响。等温研究表明油吸附符合Freundlich模型，热力学研究表明油吸附是自发的，

图形摘要