The integrated fixed-film activated sludge (IFAS) system is a variation of the activated sludge wastewater treatment process, in which hybrid suspended and attached biomass is used to treat wastewater. Although the function and performance of the IFAS system are well studied, little is known about its microbial community structure. In this study, the composition and diversity of the bacterial c...

This study investigated the abundance and distribution of key functional microbial populations and their activities in a full-scale integrated fixed film activated sludge-enhanced biological phosphorus removal (IFAS-EBPR) process. Polyphosphate accumulating organisms (PAOs) including Accumulibacter and EBPR activities were predominately associated with the mixed liquor (>90%) whereas nitrifying...

conclusions based on nitrification and denitrification data, the best condition for nitrifying/ denitrifying performance was obtained by modified-ifas. hence, the modification can be used to obtain the best activities of microbial and nitrogen removal improvement. results employing the bet, surface area (sa), total pore volume (vp), and average size of the nanostructure were 0.4026 m2/g, 3.8089...

1. This is document SL-211, a publication of the Soil and Water Science Department, Florida Cooperative Extension Service, IFAS, University of Florida. Published November 2003. Please visit the EDIS Website http://edis.ifas.ufl.edu. 2. C.D. Stanley, professor, Soil and Water Science, Gulf Coast Research and Education Center, Florida Cooperative Extension Service, IFAS, University of Florida ; R...

Ad Hoc networks are characterized by fast dynamic changes in the topology of the network. Introduction of new routing algorithms requires a deep and trustworthy evaluation process. In this paper we describe an Interactive Flexible Ad Hoc Simulator (IFAS) that presents a modern and novel approach to the family of Ad Hoc simulators. This simulator supports unique viewing, debugging, tuning and in...

A diversity antenna combining four inverted-F antennas (IFAs) is evaluated for UHF RF identification (RFID) readers. Polarisation and pattern diversities are obtained for a sequentially rotated configuration of the IFAs. Mutual coupling between ports is minimised by etching quarter-wavelength slots into the ground plane. The resulting envelope correlation coefficient is less than 0.003 in the w...

We report on the first study trialling a newly-developed, functional gene microarray (FGA) for characterising bacterial and archaeal ammonia oxidisers in activated sludge. Mixed liquor (ML) and media biofilm samples from a full-scale integrated fixed-film activated sludge (IFAS) plant were analysed with the FGA to profile the diversity and relative abundance of ammonia-oxidising archaea and bac...

Background & Aims of the Study: Wastewater discharges from vegetable oil industry cause environmental problem, including pollution of groundwater and surface water. Therefore, this study evaluated the efficiency of Integrated Fixed-Film Activated Sludge (IFAS) reactor for treatment of wastewater from Varamin vegetable oil industries. Materials & Methods: This was an experimental study. The ...

Molecular and morphological consilience in the characterisation and delimitation of five nematode species from Florida belonging to the Xiphinema americanum-group Ugur GOZEL 1,∗, Franco LAMBERTI 2,†, Larry DUNCAN 1,‡, Augusta AGOSTINELLI 2, Laura ROSSO 2, Khuong NGUYEN 3 and Byron J. ADAMS 3,§ 1 University of Florida, IFAS, Citrus Research and Education Center, Department of Entomology and Nema...

Cahiers de l'Ifas is an occasional working paper published by Ifas, dedicated to disseminating research on social issues in Southern Africa. Under the guidance of appointed editors, each issue covers a specific theme; papers originate from researchers, experts or students, local or not, with an interest in the region. The views and opinions expressed here remain the sole responsibility of the a...