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Related Concept Videos

Bioplastics01:27

Bioplastics

Bioplastics derived from microbial processes present a sustainable alternative to conventional petroleum-based plastics. Among these, polyhydroxyalkanoates (PHAs), particularly polyhydroxybutyrates (PHBs), have emerged as prominent candidates due to their biodegradability and biocompatibility. These polymers are synthesized by a variety of bacteria, such as Cupriavidus necator and Pseudomonas putida, which naturally accumulate PHAs as intracellular carbon and energy reserves, especially under...
Halogens03:01

Halogens

Group 17 elements, known as halogens, are nonmetals. At room temperature, fluorine and chlorine are gases, bromine is a liquid, and iodine a solid. Astatine is a highly unstable radioactive element, so currently, most of its properties are unknown due to its short half-life. Tennessine is a synthetic element also predicted to be in this group.
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Polyethylene terephthalate (PET) is a synthetic polymer widely utilized in the packaging industry, particularly for bottles and containers. Due to its chemical stability and durability, PET accumulates in the environment, contributing significantly to plastic pollution. It comprises repeating units of terephthalic acid and ethylene glycol, resulting in a semi-crystalline structure that is resistant to natural degradation processes.A notable breakthrough in plastic biodegradation came with the...
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Microbial leaching, also known as bioleaching, is an environmentally favorable method for extracting metals from low-grade ores using specific microorganisms. This biotechnological approach is particularly valuable for mining operations targeting copper, gold, and uranium, where traditional extraction methods may be economically or environmentally impractical.Copper Leaching and Microbial CatalysisIn copper bioleaching, crushed ore is arranged into heaps and irrigated with a dilute sulfuric...
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Pesticides often feature structurally complex chemical architectures, incorporating halogen groups and multiple aromatic rings. These characteristics confer high chemical stability, rendering many pesticides resistant to natural degradation processes. This resistance poses significant environmental concerns, as persistent pesticide residues can accumulate in ecosystems and affect non-target organisms.Despite the inherent stability of many pesticides, certain microorganisms possess the metabolic...

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Investigating Long-Distance Transport of Perfluoroalkyl Acids in Wheat via a Split-Root Exposure Technique
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Published on: September 28, 2022

Polyfluoroalkyl compounds in landfill leachates.

Jan Busch1, Lutz Ahrens, Renate Sturm

  • 1Department for Environmental Chemistry, GKSS Research Centre Geesthacht, Geesthacht, Germany.

Environmental Pollution (Barking, Essex : 1987)
|January 8, 2010
PubMed
Summary

Polyfluoroalkyl compounds (PFCs) in landfill leachate pose environmental risks. Treatment effectiveness varied, with membrane and activated carbon systems showing better PFC removal than wet air oxidation or biological methods.

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Area of Science:

  • Environmental Chemistry
  • Water Quality Analysis
  • Pollutant Fate and Transport

Background:

  • Polyfluoroalkyl compounds (PFCs) are prevalent in industrial and consumer goods.
  • Landfills serve as a significant source of PFCs entering the aqueous environment via leachate.
  • Understanding PFC behavior in landfill leachate is crucial for environmental protection.

Purpose of the Study:

  • To quantify PFC concentrations in untreated and treated landfill leachate.
  • To identify dominant PFCs in German landfill leachates.
  • To evaluate the efficacy of different leachate treatment systems on PFC removal.

Main Methods:

  • Analysis of 43 different PFCs in leachate samples from 22 German landfill sites.
  • Comparison of PFC concentrations in untreated versus treated leachate.
  • Assessment of various treatment technologies including membrane filtration, activated carbon, wet air oxidation, and biological treatment.

Main Results:

  • PFC concentrations varied widely, from 31 to 12,819 ng/L in untreated and 4 to 8060 ng/L in treated leachate.
  • Perfluorobutanoic acid (PFBA) and perfluorobutane sulfonate (PFBS) were the most abundant PFCs in untreated leachate.
  • Membrane treatments and activated carbon were more effective in reducing PFC discharge compared to wet air oxidation or biological treatment.

Conclusions:

  • Leachate treatment significantly impacts PFC discharge into the environment.
  • Advanced treatment methods like membrane filtration and activated carbon offer superior PFC removal.
  • Effective management of PFCs in landfill leachate is essential to mitigate aquatic pollution.