在连续和不连续系统中使用Citrullus lanatus种子粉去除水中的染料
Patricia Grassi1, Jordana Georgin2, Dison S P Franco2
1Chemical Engineering Department, Federal University of Santa Maria, Santa Maria, Brazil.
International journal of phytoremediation
|June 22, 2023
概括
这项研究开发了一种低成本的生物吸收剂,从西瓜种子中提取,用于去除水晶紫色和基本素等阴阳性染料. 生物吸收剂在自然pH值下有效地去除了染料,显示了废水处理的潜力.
科学领域:
- 环境化学环境化学
- 材料科学 材料科学 材料科学
- 吸附科学 吸附科学
背景情况:
- 污染废水的化染料带来环境风险.
- 开发具有成本效益和可持续的吸附剂对于去除染料至关重要.
- 农业废物利用为开发新型生物吸收剂提供了一个有前途的途径.
研究的目的:
- 从 *Citrullus lanatus* (西瓜) 种子残留物中合成和表征一种低成本的生物吸收剂.
- 为了研究这种生物吸收剂在从水溶液中去除阴离子染料的有效性.
- 评估物理化学参数对染料吸附效率的影响.
主要方法:
- 来自*Citrullus lanatus*种子的生物吸收剂制剂.
- 生物吸收物表面性能的表征 (木质素和纤维素组成,异质表面).
- 批量吸附实验以确定最佳pH值,吸附剂剂量,接触时间和温度.
- 动力和同热模拟 (埃洛维奇,伪二阶,朗穆尔模型).
- 对于晶体紫色和基本素的吸附能力的确定.
主要成果:
- 在自然pH下,最佳吸附发生在0.8gL-1的剂量下.
- 在120分钟内达到吸附平衡,这表明运动迅速.
- 兰穆尔模型最好地描述了平衡,容量为48.13毫克-1 (水晶紫) 和44.26毫克-1 (基本).
- 吸附是外热的,并且受到温度升高的负面影响.
- 生物吸收剂在合成染料混合物中表现良好.
结论:
- *Citrullus lanatus*种子残留物是一种可行的,低成本的生物吸收剂,用于去除阴阳性染料.
- 生物吸收剂表现出高效和快速的吸附动力学.
- 该材料显示了在工业废水处理中应用的潜力.
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