Publications by authors named "A Grasserova"
Article Synopsis
- Scientists looked at how treating sewage sludge (waste from toilets) affects the levels of harmful metals and chemicals in farming soils and crops.
- They found that using processed sludge helped reduce 'bad' metals in crops, like arsenic and copper, and made sure the crops were safe to eat.
- The study showed that treating sludge can lower harmful chemicals significantly, but more research is needed to see how it works with different soils and plants.
Processing sewage sludge can be problematic due to its potential environmental toxicity. It may contain high concentrations of pharmaceuticals, polycyclic aromatic hydrocarbons, and heavy metals, as well as pathogenic microorganisms. However, it is a good source of organic matter and rich in microbial communities and enzymatic activity.
View Article and Find Full Text PDFEfficient treatment of sewage sludge may transform waste into stable materials with minimised hazardous properties ready for secondary use. Pyrolysed sewage sludge, sludgechar, has multiple environmental benefits including contaminant sorption capacity and nutrient recycling. The properties of five sludgechars were tested firstly for adsorption efficiency in laboratory solutions before prospective application to soils.
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- * Scientists mixed sewage sludge with straw and added earthworms to see how well they could remove harmful chemicals like medicines from the sludge.
- * After six weeks, the earthworms removed a lot of harmful stuff and also reduced the number of bad bacteria in the sludge, showing that worms can help clean up waste effectively! *
The present study was focused on vermicomposting of spent coffee grounds (SCG) and its mixtures with straw pellets. The process was evaluated in terms of biological and physico-chemical properties. The greatest number and biomass of earthworms was found in the treatment with 25% vol.
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