The efficiency of municipal landfill leachate nitrification in the rotating biological contactor (RBC)
© Aristotle University of Thessaloniki (6/2009)
The aim of this study was to estimate the nitrification efficiency and the main products of nitrification in dependence on ammonium load in two-stage rotating biological contactor (RBC) system.

The synthesis of polyhydroxyalkanoates by mixed microbial cultures under aerobic dynamic feeding conditions using by-products from biodiesel production
© Aristotle University of Thessaloniki (6/2009)
The ability of polyhydroxyalkanoates synthesis by mixed microbial cultures using crude glycerol as a carbon source was investigated. The research was conducted in the SBR at one-stage process with simultaneous biomass growth and PHA accumulation, depending on organic load rate – OLR (3.70, 4.54 and 5.88 g COD/Ld) and carbon to nitrogen ratio – C/N (15 and 26).

Investigation on material separation of mixed construction and demolition waste by sorting process
© Aristotle University of Thessaloniki (6/2009)
The final disposal ratio of mixed construction and demolition waste (MCDW) remains high in Japan, while progress has been made in the recycling of other construction and demolition waste. Sorting facilities are expected to play an important role in better management of MCDW. In this study, the feasibility of sorting facilities for the separation of material and of pre-treatment for final disposal was investigated by conducting a batch experiment at an operational facility.

Production of secondary value-added products from the chemical recycling of PET bottles
© Aristotle University of Thessaloniki (6/2009)
A research effort was undertaken to produce secondary value-added products (dimethacrylated oligoesters) from the products of PET chemical recycling by glycolysis. The final objective was to use these compounds, as potential raw materials for the production of UV-curable formulations, used as enamel paints or coatings for metallic surfaces in automotive industry.

Differences on the porosity development of carbon dioxide activated carbons from lignocellulosic residues
© Aristotle University of Thessaloniki (6/2009)
The use of almond tree pruning and almond shell for the production of activated carbons during carbon dioxide activation was investigated. Experimental results show the influence of the raw material on the porous structure of the ACs and how this influence is more marked as the activation time is increased.

Effect of material membrane on the treatment of cutting oil emulsion by ultrafiltration
© Aristotle University of Thessaloniki (6/2009)
The aim of this study is the treatment of macroemulsion by ultrafiltration process. The membrane material effect on the permeate and rejection flows was investigated. Experiments carried out with organic and mineral membranes and the samples treated were prepared with soluble cutting oil (SarelfA).

Electrochemical treatment of synthetic milk emulsion
© Aristotle University of Thessaloniki (6/2009)
The electrocoagulation efficiency of milk samples (4g/L) which are considered as an oil in water (O/W) emulsion, with the use of Al/Al, Al/Pt and Pt/Pt electrodes has been investigated. The removal of COD, orthophosphate and turbidity was investigated according to the variation of current density, material electrode, electrolysis time and initial pH.

Valorization of Automobile Shredder Residue (ASR) in Italy
© Aristotle University of Thessaloniki (6/2009)
This work concerns the characterization of Automobile Shredder Residue (ASR) samples coming from three industrial tests, each performed on 250 – 300 t of End of Life Vehicles (ELVs) in two different shredding plants. ASR samples underwent the following analyses: distribution of the different components (rubber, foam rubber, plastic, textile, metals and wires, glass and other materials) and their physical and chemical characterization (metals, water and oil contents, particlesize distribution, lower heating value - LHV, leaching test according to UNI 10802 procedure).

Effect of temperature and aeration rate on co-composting efficiency of olive mill wastewater with olive stone wooden residues
© Aristotle University of Thessaloniki (6/2009)
Co-composting of the solid residues and wastewater from the olive oil production process was examined as a potential bioremediation treatment for these wastes. Experimental results from a laboratory pilot plant were reported.

Management of industrial waste on sustainable landfills: Influence of the ageing of stabilised/solidified metallic waste on the leaching characteristics
© Aristotle University of Thessaloniki (6/2009)
In this work, products obtained by stabilisation/solidification of electric arc furnace dust at industrial scale have been studied in order to control their leaching pollution in a lifetime on sustainable landfills. Total metallic pollutants, NEN 7341 availability test and three different mobility tests have been studied as basic and compliance characterisation at two different curing ages, 28 and 385 days: EN 12457 batch leaching test at two liquid/solid ratios, 2 and 10 L/kg, and prEN 14405 up flow percolation leaching test have been developed in the end-products.

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