The influence of particles properties on biofilm structure, reactor performance, and energy consumption for denitrifying fluidized bed bioreactors (DFBBRs) using maxi-blast plastic (MX), multi-blast plastic (MB), natural zeolite (NZ), and lava rock (LR) was investigated. The work showed that the particles with sphericity of 0.9 (MB and NZ) maintained a fluffy protruding biofilm and achieved sli...

An Aerosol Time-Of-Flight Mass Spectrometer (ATOFMS) was deployed to investigate the size-resolved chemical composition of single particles at an urban background site in Paris, France, as part of the MEGAPOLI winter campaign in January/February 2010. ATOFMS particle counts were scaled to match coincident Twin Differential Mobility Particle Sizer (TDMPS) data in order to generate hourly size-re...

In this study, the focus is on magnetic separation of fresh water algae Chlamydomonas reinhardtii and Chlorella vulgaris as well as marine algae Phaeodactylum tricornutum and Nannochloropsis salina by means of silica-coated magnetic particles. Due to their small size and low biomass concentrations, harvesting algae by conventional methods is often inefficient and cost-consuming. Magnetic separa...

A favorable microenvironment for biofilm growth on GAC particles was shown using green fluorescent protein (GFP) as a marker for a phenol degrading bacterium, Pseudomonas putida F1. The dispersion of P. putida F1 in a biofilm covering granulated activated carbon (GAC) particles was monitored and compared to a biofilm on non-activated granular carbon particles. Laser scanning confocal microscopy...

(COPD) is preventable and treatable. It is characterised by airflow limitation which is not fully reversible and is progressive. The pathophysiological basis is an abnormal inflammatory response by the lung to inhaled noxious particles or gases, particularly cigarette smoke.1 In the developing world exposure to indoor air pollution, such as fumes from biomass fuels for cooking and heating, is a...

A newly developed stereoscopic camera system has been applied to measure the temperature, size and shape of burning coal and biomass particles in a lab-scale laminar flow reactor. The stereoscopic imaging method enables to measure the particle contour which can be used to determine the shape of the particle. As the camera system is constructed for two-color pyrometry, the simultaneous detection...

Biomass burning (BB) events are occurring globally with increasing frequency, and their emissions having more impacts on human health climate. Large ash particles recognized as a BB product major influences soil water environments. However, fine-ash particles, which have diameters smaller than several microns characteristic morphologies compositions (mainly Ca Mg carbonates), not yet been expli...