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National Repository of Grey Literature 3 records found  Search took 0.00 seconds. 
Sink disposers and theirs importance in biological degradable waste removal.
 Amemori, Anna ; Benešová, Libuše (advisor) ; Doležalová, Markéta (referee)
Some 30 - 50 % of municipal solid waste (MSW) is biodegradable waste. Most of this waste is sent to landfills or incinerated and is not recovered. According to Waste Management Plan of Czech Republic based on the Landfill Directive of EU, Czech Republic should to reduce weight of biodegradable waste sent to lanndfills to 75 % in 2010 and 35 % in 2020 compared with the amount that had been landfilled in 1995. In rural areas biodegradable waste is fed to animals or treated by home composting. However in urban areas the collection of separated biowaste is problem for a long time. Food waste disposers (FWDs) presents interesting alternative for the biowaste disposal. They enable the separation of food waste at source by shreding it in a kitchen sink. FWDs utilize existing infrastructure of sewer system to transport shreded wastes to wastewater treatment plants (WWTP). Wastes can be disposed in WWTPs by anaerobic digestion - the best method for disposal of food waste of animal origin. This work concentrates on literature research of studies about feasibility of FWD as a instrument for biodegradable waste removal and compares arguments for and against using of FWDs in households. Majority of studies shows no complications in sewer system and on WWTP after instalation of FWDs. Energetic and hydraulic consumption...
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Application of ligninolytic fungi on solid substrates for degradation of endocrine disrupters
 Slavíková - Amemori, Anna ; Cajthaml, Tomáš (advisor) ; Gabriel, Jiří (referee)
Today a lot of attention is focused on compounds called endocrine disrupters (EDs) among substances released to environment by humans. They are a group of substances which can disturb function of hormonal system of organisms including humans. Their poor removal at wastewater treatment plants (WwTP) were shown at various studies, thus they can reach the environment in water. A prospective way for the degradation of EDs at WwTP can be their removal by ligninolytic fungi. They are able to degrade lots of lignin-like aromatic substances because of their highly nonspecific enzymes. In this work growth and enzyme production capability of four ligninolytic fungal strains were monitored on three solid substrates (straw pellets, poplar sawdust mixed with straw pellets, oak sawdust with straw pellets), which may be suitable substrates for fungal growth in bioreactors for wastewater treatment. Ability of these enzymes to degrade EDs were tested in in-vitro degradation experiment. Trametes versicolor was found as best degrading strain with 20 μg/ml of bisphenol A, 17 α- ethynylestradiol and nonylphenol degraded below a quantification limit within 24 hours. Fungal strains degraded EDs well on all of the three substrates but wood sawdust seemed to be a better substrate for fungal growth because straw pellets...
Detailed record
Sink disposers and theirs importance in biological degradable waste removal.
 Amemori, Anna ; Benešová, Libuše (advisor) ; Doležalová, Markéta (referee)
Some 30 - 50 % of municipal solid waste (MSW) is biodegradable waste. Most of this waste is sent to landfills or incinerated and is not recovered. According to Waste Management Plan of Czech Republic based on the Landfill Directive of EU, Czech Republic should to reduce weight of biodegradable waste sent to lanndfills to 75 % in 2010 and 35 % in 2020 compared with the amount that had been landfilled in 1995. In rural areas biodegradable waste is fed to animals or treated by home composting. However in urban areas the collection of separated biowaste is problem for a long time. Food waste disposers (FWDs) presents interesting alternative for the biowaste disposal. They enable the separation of food waste at source by shreding it in a kitchen sink. FWDs utilize existing infrastructure of sewer system to transport shreded wastes to wastewater treatment plants (WWTP). Wastes can be disposed in WWTPs by anaerobic digestion - the best method for disposal of food waste of animal origin. This work concentrates on literature research of studies about feasibility of FWD as a instrument for biodegradable waste removal and compares arguments for and against using of FWDs in households. Majority of studies shows no complications in sewer system and on WWTP after instalation of FWDs. Energetic and hydraulic consumption...
Detailed record

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