Feasibility of carbon dioxide bubbles as a collector in flotation process for water treatment

Research Article| February 01 2013 Feasibility of carbon dioxide bubbles as a collector in flotation process for water treatment Dong-Heui Kwak; Dong-Heui Kwak 1Department of Environmental and Chemical Engineering, Seonam University, Namwon, Republic of Korea Search for other works by this author on: This Site PubMed Google Scholar Mi-Sug Kim Mi-Sug Kim 2School of Environmental Science, Engineering, and Policy, Drexel University, Philadelphia, PA, USA; Industry Technology Research Institute of Seonam University, Namwon, Republic of Korea E-mail: mskim.han@gmail.com Search for other works by this author on: This Site PubMed Google Scholar Journal of Water Supply: Research and Technology-Aqua (2013) 62 (1): 52–65. https://doi.org/10.2166/aqua.2013.156 Article history Received: May 27 2012 Accepted: November 05 2012 Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Share Icon Share Facebook Twitter LinkedIn Email Tools Icon Tools Cite Icon Cite Permissions Search Site Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentAll JournalsThis Journal Search Advanced Search Citation Dong-Heui Kwak, Mi-Sug Kim; Feasibility of carbon dioxide bubbles as a collector in flotation process for water treatment. Journal of Water Supply: Research and Technology-Aqua 1 February 2013; 62 (1): 52–65. doi: https://doi.org/10.2166/aqua.2013.156 Download citation file: Ris (Zotero) Reference Manager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex A series of laboratory experiments were carried out to investigate particle separation efficiency and flotation characteristics using CO2 bubbles. The primary objective of this study was to discover the feasibility of CO2 bubbles as an applicable unit of flotation process in water and wastewater treatment plants. Fundamental measurements were conducted to characterize the CO2 bubble from the physical viewpoint in water, including bubble size distribution and zeta potential under various operational conditions. In addition, the removal efficiency of solids was experimented using laboratory scale plant applied CO2 bubbles, namely the dissolved carbon dioxide flotation (DCF) process. CO2 bubble diameter was a little larger than air bubble diameter and macro-bubble numbers increased considerably above 202.65 kPa saturator pressures. The CO2 bubble demonstrated a little higher electrical charge in a typical pH range. This study confirmed the feasibility of CO2 bubbles in the flotation process for water treatment, as a part of reducing greenhouse gas emission. Further study is positively necessary to reduce the CO2 bubble size (larger than the air bubble size) and to prevent the formation of macro bubbles causing the reduction of water treatment efficiency, especially. bubble, carbon dioxide, dissolved air flotation, flotation, particle, water treatment This content is only available as a PDF.