Essays about: "biofilm"

Showing result 16 - 20 of 100 essays containing the word biofilm.

  1. 16. Potential of waste-derived VFAs-bearing effluents as an external carbon source for MBBR denitrification of domestic wastewater

    University essay from Högskolan i Borås/Akademin för textil, teknik och ekonomi

    Author : Seyed Reza Manafi Khosroshahi; [2022]
    Keywords : Volatile fatty acids; Denitrification; Wastewater treatment; Biological nutrient removal; Nitrate removal; Electron accepter; Carbon source; Electron doner; Moving bed biofilm reactor; Nanofiltration; VFA concentration; Discharge standards; Carriers; acclimatization; VFAs; MMBR; NF; WWTP; BNR;

    Abstract : In conventional wastewater treatment plants, methanol, ethanol, and acetate are used as carbon source for the denitrification process in the biological nutrient removal. However, growing concern regarding economical costs and carbon footprints from the fossil-based production of these chemicals have forced the companies to look for other alternatives. READ MORE

  3. 17. PFAS in a Swedish wastewater treatment plant : An analysis of the effectiveness of major treatment steps on 33 PFAS

    University essay from Luleå tekniska universitet/Institutionen för samhällsbyggnad och naturresurser

    Author : Jonatan Forsberg; [2022]
    Keywords : Northern Sweden; PFAS; municipal WWTP; MBBR; GAC;

    Abstract : Wastewater treatment plants (WWTP) are known spreaders of per- and polyfluoroalkyl substances (PFAS) into the environment. Luleå University of Technology is conducting a yearlong study in which PFAS concentrations in the different treatment steps are measured at Uddebo treatment plant. READ MORE

  4. 18. Nitrogen removal in MBBR : Investigating the effect of temperature

    University essay from KTH/Hållbar utveckling, miljövetenskap och teknik

    Author : Rediet Tezera Tafese; [2022]
    Keywords : Wastewater; Nitrogen removal; Nitrification; Denitrification; MBBR; Cold temperature; Avloppsvatten; Kväverening; Nitrifikation; Denitrifikation; MBBR; låg temperatur;

    Abstract : The project undertaken in this thesis was performed at MittSverige Vatten och Avfall (MSVA) in cooperation with the Swedish Environmental Research Institute (IVL). The effect of temperature on nitrogen removal using moving bed biofilm reactor (MBBR) was controlled using two separate lines by investigating the influence of temperature on nitrification, pre-denitrification, and post- denitrification in a pilot plant scale. READ MORE

  5. 19. Produktion av biofilm med MRSA, MRSP eller Campylobacter jejuni, samt hur olika desinfektionsmedel påverkar den

    University essay from SLU/Dept. of Biomedical Sciences and Veterinary Public Health

    Author : Moa Therése Viklund; [2022]
    Keywords : biofilm; destruktion av biofilm; Campylobacter jejuni; stafylokocker; MRSA; MRSP; desinfektion; rengöring; peroxymonosulfat buffrade syror; perättiksyra; väteperoxid; hypoklorsyra; etanol;

    Abstract : I denna studie ingick såväl produktion av biofilm i en statisk modell med mikrotiterplattor där biofilmen fick växa ostört i 5 dagar i inkubationsskåp i 30 °C, samt en mer dynamisk modell. I den dynamiska modellen ingick vattenledningsrör där buljong och bakterier växt i inkubationsskåp i 30 °C i 5 dagar för att sedan stå i rumstemperatur i ytterligare 5 dagar med daglig skakning i en timme, samt att buljong byttes ut vid dag 5 och nya bakterier tillsattes dag 7. READ MORE

  6. 20. Isolation of Streptococcus salivarius from human oral samples and In vivo recombination cloning of EAL 2 of Streptococcus uberis C6344

    University essay from Uppsala universitet/Institutionen för medicinsk biokemi och mikrobiologi

    Author : Thamida Tauhid; [2022]
    Keywords : Streptococcus uberis C6344; Streptococcus henryi; c-di-GMP; GGDEF domain protein; EAL domain protein; In vivo recombination cloning; Streptococcus salivarius; Streptococcus Selection Agar;

    Abstract : The second messenger cyclic diguanylate monophosphate (c-di-GMP) has been proven to be a central regulator for physiological and metabolic processes including biofilm formation and sessile to motile transitioning (1,2). The synthesis and degradation of c-di-GMP are regulated by GGDEF- respectively EAL-domain proteins. READ MORE