Project: Combatting cyanobacteria by addition of naturally occurring substances

Project: Combatting cyanobacteria by addition of naturally occurring substances

Instapniveau

MSc projects possible.

Studierichtingen

Ecology / Biology / Sustainable engineering

Start

Available now

Duur

5 – 9 months

Opdrachtgever

Sustain BV (Rhenen) and Rechobot – Water & Knowledge (Wageningen) and their advisor. They want to bring this method to combat cyanobacteria to the market. They will co-supervise this research.

Locatie

Rhenen and Wageningen

Opdracht beschrijving

Blooms of cyanobacteria are a widespread problem in lakes and ponds. The best method to control cyanobacterial blooms is long-term reduction of nutrient loads. However, this is not possible in all situations. Therefore suitable curative methods are needed. A number of curative methods are already developed. These methods are not applicable or feasible in all situations due to for instance high material or energy costs or negative side effects. A new method, involving the addition of a mixture of naturally occurring substances (called Natural Pond), has proven to successfully inhibit the growth of cyanobacteria in preliminary tests (see fig 1). The precise mechanism of the inhibition of cyanobacterial growth is not known yet. The entrepreneurs developed a test with mini enclosures in which the effectiveness of this method was studied under different conditions. In this MSc thesis you will perform further research on this method.

The planned research will lead to a better understanding of:

  • The effectiveness of this method to control cyanobacterial blooms.
  • Under what conditions and with what dose of active ingredients, the method works best
  • The working mechanism
  • The applicability for various cyanobacterial species and/or water systems

 

This study will consist of two parts.

  1. Laboratory tests in order to determine the optimal dose of the product for reduction of cyanobacteria
  2. Field work: Treatment, water quality research, during and several weeks after application

 

Technical skills/methods:

  • Field research
  • Setting up experiments in the lab
  • Techniques: microscopy, toxin analysis, HPLC, nutrient analysis etc.

De onderzoeksvraag is:

How effective is the addition of a mixture of naturally occurring substances (called Natural Pond) in controlling the growth of cyanobacteria in lakes and ponds?

Mogelijke deelvragen zijn:

  • What is the precise mechanism of the inhibition of cyanobacterial growth?
  • Under what conditions and with what dose of active ingredients does the method work best?

Voor meer info:

Roos van Maanen, Amsterdam Green Campus (r.vanmaanen@uva.nl),

Rikje van de Weerd – Rechobot Water & Knowledge (Rikje.vandeWeerd@rechobot.nl),

Petra Visser (P.M.Visser@uva.nl, examiner).

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