论疏水絮凝与疏水作用力

1982年Israelachvili和Pashley在Nature期刊上报道了以实验测得的疏水作用力,这一发现使当时的学者们倍感兴奋,激起了一个持续不断的研究.经过30多年的研究,疏水作用力被证明客观存在,并被众多科学家所认可.根据这一发现,经典的DLVO理论应补充疏水作用力,成为扩展的DLVO理论,经典的絮凝理论也应包括疏水絮凝的贡献.迄今疏水絮凝在矿物分选领域已取得了巨大成功,但在水处理领域尚缺乏认识和研究.本文综述了疏水作用力及疏水絮凝的发现,探讨了疏水作用力的热力学解释和微观机理,指出了水处理技术中涉及到的一些疏水絮凝原理,认为水处理工作者应大力开展疏水絮凝的研究,以疏水絮凝的理论进一步推动水处理科学技术的发展.

Discussion on hydrophobic flocculation and hydrophobic force

Israelachvili and Pashley reported the discovery of hydrophobic force by experimental measurement in Nature in 1982. This finding excited the researchers and has invoked a continuous research since then. Over 30 years, the existence of hydrophobic force have been proved and accepted. According to this finding, the traditional DLVO theory should be supplemented with the hydrophobic force, thus modified as the extended DLVO theory, therefore, the traditional flocculation theory should include the contribution from the hydrophobic flocculation. Up to now, the great success of the hydrophobic flocculation has been achieved in the area of mineral separation, but it has not been recognized and studied in the area of water treatment. This article reviews the discovery of hydrophobic force, discusses the thermodynamic explanation and the microscopic mechanism for hydrophobic force, and introduces some water treatment technologies concerning hydrophobic flocculation, indicating that the researchers in the area of water treatment should study hydrophobic flocculation and promote the further development of water treatment by the theory of hydrophobic flocculation.