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Related Concept Videos

Bioremediation00:46

Bioremediation

Bioremediation is the use of prokaryotes, fungi, or plants to remove pollutants from the environment. This process has been used to remove harmful toxins in groundwater as a byproduct of agricultural run-off and also to clean up oil spills.
Microbial Bioremediation of Hydrocarbons01:26

Microbial Bioremediation of Hydrocarbons

Bioremediation is an environmentally sustainable process that employs living organisms—primarily microorganisms—to degrade or neutralize pollutants from contaminated environments. In oil spills and hydrocarbon pollution, bioremediation involves the use of hydrocarbon-degrading bacteria to transform toxic compounds into less harmful substances. This approach leverages natural microbial metabolic processes and is considered both cost-effective and ecologically favorable compared to physical or...
Green Algae01:21

Green Algae

Green algae, also referred to as chlorophytes, are different from red algae in having the chloroplasts containing chlorophylls a and b, which give them their distinct green hue. However, they lack phycobiliproteins, preventing them from developing the red or blue-green pigmentation seen in red algae. In terms of photosynthetic pigment composition, green algae closely resemble plants and share a close evolutionary relationship with them. Taxonomically Green algae belong to Phylum Chlorophyta in...
Microbial Wastewater Treatment01:30

Microbial Wastewater Treatment

Microbial communities in aquatic ecosystems play a key role in the natural breakdown of contaminants introduced through domestic and industrial effluents. Acting as biological catalysts, these microbes change and mineralize a wide range of organic and inorganic pollutants under different redox conditions.In oxygen-rich surface waters, aerobic heterotrophs lead organic matter breakdown, using oxygen as the terminal electron acceptor to efficiently oxidize substrates to carbon dioxide and water.
Biofuels01:25

Biofuels

The microbial conversion of organic matter into biofuels holds potential as a renewable energy source. Among biofuel sources, microalgae are recognized as a highly efficient and adaptable feedstock for biodiesel production, owing to their rapid biomass accumulation, elevated lipid productivity, and capacity to proliferate in diverse aquatic systems, including freshwater, marine, and wastewater habitats. Unlike terrestrial crops, microalgae do not compete for land and can achieve significantly...
Other Algae01:19

Other Algae

The group Stramenopiles include some phototrophic microorganisms. Members of this group possess flagella covered in numerous short, hairlike extensions, a feature that inspired the group's name, derived from the Latin words for "straw" and "hair." Some of the main categories of Stramenopiles include diatoms, golden algae, and brown algae.Diatoms are unicellular, photosynthetic eukaryotes, with over 200 known genera. They play a key role in the planktonic communities of both marine and...

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Related Experiment Video

Updated: Jun 23, 2026

Determination of the Settling Rate of Clay/Cyanobacterial Floccules
06:00

Determination of the Settling Rate of Clay/Cyanobacterial Floccules

Published on: June 11, 2018

[Removal of algae using local soils and sediments].

Hua Zou1, Gang Pan, Zi-Bo Cheng

  • 1School of Environment & Civil Engineering, Jiangnan University, Wuxi 214122, China. hoolzou@163.com

Huan Jing Ke Xue= Huanjing Kexue
|May 1, 2009
PubMed
Summary

Chitosan-modified local soils effectively remove harmful algal blooms. This eco-friendly method offers a rapid solution for clearing cyanobacterial blooms in freshwater bodies.

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Determination of the Settling Rate of Clay/Cyanobacterial Floccules
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Published on: June 11, 2018

Coupling Carbon Capture from a Power Plant with Semi-automated Open Raceway Ponds for Microalgae Cultivation
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Area of Science:

  • Environmental Science
  • Water Quality Management
  • Ecology

Background:

  • Algal blooms, particularly harmful cyanobacterial blooms, pose significant threats to freshwater ecosystems and human health.
  • Effective and rapid removal strategies are crucial for mitigating the ecological and economic impacts of algal blooms.

Purpose of the Study:

  • To investigate the efficacy of local soils and sediments modified with chitosan for the removal of algal blooms.
  • To assess the influence of soil/sediment components and water organic matter on algae removal efficiency.

Main Methods:

  • Utilized chitosan-modified local soils and sediments for algae removal experiments.
  • Conducted field experiments in enclosures within Taihu Lake to evaluate performance under natural conditions.
  • Measured chlorophyll-a concentration and secchi depth to quantify removal effectiveness and water clarity.

Main Results:

  • Chitosan-modified local soils and sediments demonstrated high effectiveness in removing algae.
  • Organic matter within soils/sediments did not impact algae removal, while water TOC showed a slight negative effect.
  • Field trials showed a loading of 0.025 g/L chitosan-modified soil removed 98.6% chlorophyll-a and increased secchi depth significantly.

Conclusions:

  • Chitosan-modified local soils are a highly effective and rapid solution for emergency management of harmful cyanobacterial blooms.
  • This method offers a promising, potentially eco-friendly approach to restoring water quality in affected freshwater systems.