The mechanisms of potassium permanganate on algae removal

Water Research
Jen-Jeng Chen, Hsuan-Hsien Yeh


The effect of potassium permanganate as preoxidant for algae-laden source water and the mechanism that it causes algae cells aggregation was investigated. Synthetic algae suspensions, prepared from lab-cultured Chodatella sp., were used for batch preoxidation and settling tests. In order to study the effect of water hardness on the function of permanganate, some algae suspensions were spiked with CaCl2 solution. Experiments with preformed MnO2 to look into its effect on algae cell aggregation were also conducted. The results show that preoxidation with potassium permanganate would promote the aggregation of algae cells, and this phenomenon was even more significant with the existence of hardness causing ion, calcium. In addition to incorporating its reducing product, MnO2, into algae floc, and increased its specific gravity, and therefore its settling velocity, permanganate may also induce the release of extracellular organic matters (EOM) from algae cell. Based on SEM observation, EOM probably enhanced the incorporation of MnO2 into algae floc. The role played by calcium ion in promoting the function of permanganate can be explained by charge neutralization and also bridging between negatively charged surfaces.


Jan 11, 2002·Environmental Science & Technology·J D Plummer, J K Edzwald

❮ Previous
Next ❯


May 27, 2010·Analytical and Bioanalytical Chemistry·Judy A WestrickJames Sinclair
Jun 13, 2015·International Journal of Molecular Sciences·Jinyang SunHaichao Yuan
Feb 24, 2016·Frontiers in Plant Science·Rizwan R SoomroMichael K Danquah
Aug 15, 2012·Water Research·Darryl B JonesTanju Karanfil
Sep 2, 2011·Biotechnology and Bioengineering·Nicholas B WyattPhillip I Pohl
Sep 17, 2013·Journal of Applied Toxicology : JAT·Amber F RoegnerBirgit Puschner
Feb 27, 2014·Water Research·S N HussainE P L Roberts
Jan 11, 2011·Journal of Hazardous Materials·Yan ZhangGuibai Li
Aug 7, 2012·FEMS Microbiology Letters·Chunmei ZhaiChanghong Liu
May 7, 2016·Chemosphere·Pengchao XieZongping Wang
Oct 26, 2016·Journal of Hazardous Materials·Yiqun ChenSonglin Wang
May 26, 2017·Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering·Stelios A SamiosJoanna Świetlik
Sep 10, 2017·Environmental Science and Pollution Research International·Junlian QiaoLiping Lv
Aug 6, 2017·Environmental Science and Pollution Research International·Emília KubiňákováAndrea Fašková
Dec 11, 2019·Environmental Science and Pollution Research International·Aixi TangBaoling Yuan
Nov 27, 2015·Journal of Water and Health·Farida M S E El-DarsEl-Sayed A Abdel-Aal
Apr 28, 2020·Physical Chemistry Chemical Physics : PCCP·Omer S HaggagSanford Ruhman
Mar 1, 2016·Biotechnology for Biofuels·Theoneste NdikubwimanaYinghua Lu
Sep 11, 2020·Water Science and Technology : a Journal of the International Association on Water Pollution Research·Heng YanQi Zhang
Nov 22, 2020·Chemosphere·Erika L AddisonJoseph E Goodwill

❮ Previous
Next ❯

Related Concepts

Related Feeds

Blood Clotting Disorders

Thrombophilia includes conditions with increased tendency for excessive blood clotting. Blood clotting occurs when the body has insufficient amounts of specialized proteins that make blood clot and stop bleeding. Here is the latest research on blood clotting disorders.