All

What are you looking for?

All
Projects
Results
Organizations

Quick search

  • Projects supported by TA ČR
  • Excellent projects
  • Projects with the highest public support
  • Current projects

Smart search

  • That is how I find a specific +word
  • That is how I leave the -word out of the results
  • “That is how I can find the whole phrase”

Influence of COM-peptides/proteins on the properties of flocs formed at different shear rates

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985874%3A_____%2F19%3A00497268" target="_blank" >RIV/67985874:_____/19:00497268 - isvavai.cz</a>

  • Alternative codes found

    RIV/00216208:11310/19:10397561

  • Result on the web

    <a href="http://hdl.handle.net/11104/0295777" target="_blank" >http://hdl.handle.net/11104/0295777</a>

  • DOI - Digital Object Identifier

    <a href="http://dx.doi.org/10.1016/j.jes.2018.11.025" target="_blank" >10.1016/j.jes.2018.11.025</a>

Alternative languages

  • Result language

    angličtina

  • Original language name

    Influence of COM-peptides/proteins on the properties of flocs formed at different shear rates

  • Original language description

    Coagulation followed by floc separation is a key process for the removal of algal organic matter (AOM) in water treatment. Besides optimizing coagulation parameters, knowledge of the properties of AOM-flocs is essential to maximizing AOM removal. However, the impact of AOM on the floc properties remains unclear. This study investigated how peptides/proteins derived from the cellular organic matter (COM) of the cyanobacterium Microcystis aeruginosa influenced the size, structure, and shape of flocs formed at different shear rates (G). Flocs formed by kaolinite, COM-peptides/proteins and a mixture of the same were studied, and the effect of intermolecular interactions between floc components on floc properties was assessed. The coagulation experiments were performed in a Taylor-Couette reactor, with aluminum (Al) or ferric sulphate (Fe) utilized as coagulants. Image analysis was performed to gauge floc size and obtain data on fractal dimension. It was found that floc properties were affected by the presence of the COM-peptides/proteins and the coagulant used. COM-peptides/proteins increased floc size and porosity and widened floc size distributions. The Fe coagulant produced larger and less compact flocs than Al coagulant. Moreover, the decrease in floc size that occurred in parallel with increase in shear rate was not smooth in progress. A rapid change for the kaolinite-coagulant suspension and two rapid changes for the suspensions containing COM were observed. These were attributed to various intermolecular interactions between floc components participating in coagulation at different G. Based on the results obtained, shear rates suitable for efficient separation of flocs containing COM were suggested. (C) 2018 The Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences. Published by Elsevier B.V.

  • Czech name

  • Czech description

Classification

  • Type

    J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database

  • CEP classification

  • OECD FORD branch

    10511 - Environmental sciences (social aspects to be 5.7)

Result continuities

  • Project

    <a href="/en/project/GA18-05007S" target="_blank" >GA18-05007S: Influence of algal organic matter on properties of flocs formed during coagulation/flocculation in water treatment</a><br>

  • Continuities

    I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Others

  • Publication year

    2019

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Data specific for result type

  • Name of the periodical

    Journal of Environmental Sciences

  • ISSN

    1001-0742

  • e-ISSN

    1878-7320

  • Volume of the periodical

    80

  • Issue of the periodical within the volume

    June

  • Country of publishing house

    CN - CHINA

  • Number of pages

    12

  • Pages from-to

    116-127

  • UT code for WoS article

    000463379500012

  • EID of the result in the Scopus database

    2-s2.0-85058622720