Skip to Main Content
 

Global Search Box

 
 
 
 

Files

File List


30575.pdf (4.83 MB)

ETD Abstract Container

Abstract Header

Effects of Chemical Properties of Cyanotoxins on Transport through Granular Activated Carbons

Chen, Bingran
http://orcid.org/0000-0001-6634-4728
http://rave.ohiolink.edu/etdc/view?acc_num=ucin1535374137804276

Abstract Details

2018, MS, University of Cincinnati, Engineering and Applied Science: Environmental Engineering.
Cyanobacteria are microorganisms that can multiply to produce harmful algal blooms (HABs) under favorable conditions in the fresh waters. Many genera of cyanobacteria are identified capable of producing cyanotoxins, which are may lead to irritation, illness or even death in pets, livestock and humans. Microcystins and cylindrospermosin are examples of toxins that are often detected in the fresh water. Granular activated carbon (GAC) adsorption is considered to be one of the most successful techniques to eradicate dissolved cyanotoxins from fresh water. Numerous researches was conducted using virgin GAC that investigated the factors, which influence the adsorptions with the use of Rapid Small Scale Column Test (RSSCT). However, only a small number of studies focused on the use of reactivated GAC and assessed whether the chemical properties of cyanotoxins had an influence on the course of adsorption. This study aims to evaluate the effects of chemical properties of cyanotoxins (i.e., MC-LR, MC-RR and CYN) on adsorption by GAC and also to study the effect of physical properties (i.e., virgin vs. reactivated) of GACs on the eradication of cyanotoxins. The eradication efficiency of three cyanotoxins (i.e. MC-LR, MC-RR, and CYN) with the two GACs (i.e. virgin GAC and reactivated GAC) was tested. The results indicated that the breakthrough was only observed from using the reactivated GAC column with CYN at the end of operation. This observation could be due to the lower molecular weight and greater hydrophilicity of the CYN compared to MC-LR and MC-RR. In addition, as compared to the reactivated GAC, the virgin GAC exhibited a higher success in eradicating cyanotoxins, together with the total organic carbon (TOC) and dissolved organic carbon (DOC) in the substrate. The reason is that micropore allows better and greater adsorption due to its small pore size and its special structure. Hence, the virgin GAC with more micropore demonstrated better action than the reactivated GAC.
Soryong Chae, Ph.D. (Committee Chair)
Dionysios Dionysiou, Ph.D. (Committee Member)
George Sorial, Ph.D. (Committee Member)
86 p.
Environmental Engineering
cyanotoxins; GAC; chemical properties

Recommended Citations

Citations

  • Chen, B. (2018). Effects of Chemical Properties of Cyanotoxins on Transport through Granular Activated Carbons [Master's thesis, University of Cincinnati]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1535374137804276

    APA Style (7th edition)

  • Chen, Bingran. Effects of Chemical Properties of Cyanotoxins on Transport through Granular Activated Carbons. 2018. University of Cincinnati, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=ucin1535374137804276.

    MLA Style (8th edition)

  • Chen, Bingran. "Effects of Chemical Properties of Cyanotoxins on Transport through Granular Activated Carbons." Master's thesis, University of Cincinnati, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1535374137804276

    Chicago Manual of Style (17th edition)

ucin1535374137804276
196
© 2018, all rights reserved.
This open access ETD is published by University of Cincinnati and OhioLINK.