Effects of surface roughness on the hydrophilic particles-air bubble attachment

被引：25

作者：

Zhou, Shaoqi ^{[1
]}

Bu, Xiangning ^{[1
]}

Wang, Xuexia ^{[1
]}

Ni, Chao ^{[1
]}

Ma, Guangxi ^{[1
,2
]}

Sun, Yujin ^{[3
]}

Xie, Guangyuan ^{[1
]}

Bilal, Muhammad ^{[4
]}

Alheshibri, Muidh ^{[5
,6
]}

Hassanzadeh, Ahmad ^{[7
,8
]}

Chelgani, Saeed Chehreh ^{[9
]}

机构：

[1] China Univ Min & Technol, Sch Chem Engn & Technol, Minist Educ, Key Lab Coal Proc & Efficient Utilizat, Xuzhou 221116, Jiangsu, Peoples R China

[2] Shandong Univ Technol, Sch Resources & Environm Engn, Zibo 255000, Peoples R China

[3] Taiyuan Univ Technol, Coll Min Engn, Taiyuan 030024, Shanxi, Peoples R China

[4] Balochistan Univ Informat Technol Engn & Manageme, Dept Min Engn, Quetta, Pakistan

[5] Imam Abdulrahman Bin Faisal Univ, Dept Basic Sci, Deanship Preparatory Year & Supporting Studies, POB 1982, Dammam 31441, Saudi Arabia

[6] Imam Abdulrahman Bin Faisal Univ, Basic & Appl Sci Res Ctr, POB 1982, Dammam 31441, Saudi Arabia

[7] Norwegian Univ Sci & Technol, Fac Engn, Dept Geosci & Petr, N-7491 Trondheim, Norway

[8] Maelgwyn Mineral Serv Ltd, 1A Gower Rd, Cardiff CF24 4PA, Wales

[9] Lulea Univ Technol, Dept Civil Environm & Nat Resources Engn, Minerals & Met Engn, SE-97187 Lulea, Sweden

来源：

JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T | 2022年 / 18卷

基金：

中国国家自然科学基金;

关键词：

Roughness; Particle-bubble attachment; Nanobubbles; Hydrophilicity; BULK NANOBUBBLES; FLOTATION; STABILITY; WATER; INTERFACE; KINETICS; ENERGY;

D O I：

10.1016/j.jmrt.2022.04.062

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Bubble-particle attachment is a key factor in various material processing such as wastewater treatment and flotation separation. Nanobubble's formation and its stability on hydrophobic surfaces with and without surfactants have been scientifically proven and extensively studied in various investigations. However, the influence of particle roughness on the hydrophilic particle-air bubble attachment, which could be completely different from hydrophobic particle-bubble attachment in the presence of nanobubbles, has not been addressed. For tackling this gap, the present work investigated the impact of nanobubbles on the roughed surfaces of glass bead particles. The temperature rise technique as a known method was used for micro/nanobubble size generation. The glass beads were modified by the commonly applied abrasion method to create different roughness magnitudes. The particle-bubble assessment results indicated that the particle roughness could potentially affect the bubble attachment of hydrophilic glass beads while the attachment area of smooth particles was almost zero. Outcomes also were revealed that the modified attachment rate constant increased from 0.1180 to 2.2802 s-1 with the increase of particle

引用

页码：3884 / 3893

页数：10

共 55 条

[31] Optimization of Operating Parameters for Flotation of Fine Coal Using a Box-Behnken Design [J].