使用生物凝固剂从湿咖啡加工行业的废水中去除颜色和度的凝结过程:通过中央复合材料设计进行优化
Moltot Getahun1,2, Adisu Befekadu2, Esayas Alemayehu2,3
1Werabe Universitya, Institute of Technology, Department of Water Supply and environmental Engineering,Werabe, Box-046.Ethiopia.
Heliyon
|April 1, 2024
概括
天然凝固剂,如Acanthus sennii,Moringa stenopetala和花,有效地处理咖啡加工废水. 这些天然凝固剂的混合物实现了99%以上的色彩和98%的度去除.
科学领域:
- 环境科学 环境科学
- 化学工程是化学工程的重要组成部分.
- 水处理技术 水处理技术
背景情况:
- 湿咖啡加工产生的工业污染给发展中国家带来了重大水质挑战.
- 咖啡行业的废水需要有效和可持续的处理方法来减轻对环境的影响.
研究的目的:
- 研究天然凝固剂 (Acanthus sennii,Moringa stenopetala,) 在处理咖啡加工废水中的有效性.
- 用单个和组合凝固剂确定凝固效率的最佳操作参数.
主要方法:
- 凝固剂剂量,pH值,动速度和时间的系统变化.
- 使用ANOVA进行统计分析和使用Design Expert软件进行计算优化.
- 对色彩和度去除效率的评估.
主要成果:
- 一种混合了Acanthus sennii,Moringa stenopetala和花的混合物显示出卓越的性能.
- 确定了最佳条件:0.750 g/L剂量,pH值8.76,每分钟 80.73,时间 19.23 分钟.
- 在优化条件下实现了~99.99%的颜色和98.7%的度去除.
结论:
- 自然凝固剂,特别是混合形式,为咖啡废水处理提供了有效的解决方案.
- 这项研究表明了从咖啡加工中处理工业废水的可持续方法.
- 优化的天然凝固剂处理为传统方法提供了可行的替代方案.
相关概念视频
Coagulation
292
Colloidal solids are solid particles suspended in solution. They are usually negatively charged, attracting a compact primary layer of positively charged ions, which attract more counterions to form an electrical double layer. Electrostatic repulsion between the charged double layers prevents the particles from colliding, stabilizing the colloids. These solids are often undesirable because they can contain toxins that are difficult to remove. Coagulation is a technique that helps aggregate and...
292
Colloidal precipitates
576
The high insolubility of some precipitates can result in an unfavorable relative supersaturation. This can lead to colloidal particles with a large surface-to-mass ratio, where adsorption is promoted. For instance, in the precipitation of silver chloride, silver ions are adsorbed on the surface of the colloidal particles, forming a primary layer. This layer attracts ions of opposite charge (such as nitrate ions), forming a diffuse secondary layer of adsorbed ions. This electric double layer...
576


