one of the important bottle-necks in production of microalgae based biodiesel is thelack of an efficient method for harvesting of microalgae from the culture medium. in thisstudy, the electroflocculation method was developed for harvesting of microalgaedunaliella cells from culture medium. the effect of several parameters such as thecurrent density, electrical conductivity of culture medium, ti...

A potential alternative of sewage sludge reuse is the substitute of raw material for Portland cement. This paper overviews Japanese implementation of this and discusses the best selection of pretreatment for this purpose. The pretreatment includes dewatering, incineration, and lime treatment.

Wet flue gas desulphurization (FGD) plants with forced oxidation, installed at coal and oil fired power plants for removal of SO2(g), must produce gypsum of high quality. However, quality issues such as an excessive moisture content, due to poor gypsum dewatering properties, may occur from time to time. In this work, the particle size distribution, morphology, and filtration rate of wet FGD gyp...

In this data article, laboratory experimental investigation results on drying kinetic properties: the drying temperature (T), drying air velocity (V) and dewatering time (Te), each of the factors has five levels, and the experiment was replicated three times and the output: drying rate and drying time obtained, were observed. The experiment was conducted at National Centre for Agricultural Mech...

In this research, under the disturbance of pre-dewatering, analytical solution vertical displacement adjacent tunnel is derived using two-stage analysis method. first stage, effective stress principle was used to calculate additional caused by dewatering. second Pasternak-Timoshenko beam model simulate interaction between and soil, taking shear deformation into account. By referring calculation...

This study applied a filter press for dewatering that uses pressure to reduce the water content of sludge generated in sewage treatment plants and evaluated improvement dewaterability under various coagulation conditions according type coagulants, amounts, pH conditions. The was by measurement time (TTF), change zeta potential, cake after dewatering. It found conditions, inorganic coagulants we...

The hierarchy of models applicable to transient free surface problems of ground water ̄ow to drains is discussed. The model choice is related to drain type and dewatering stage. Flow pattern is illustrated to vary with decrease of the water table. Simulation of drains and corresponding boundary conditions are discussed. # 2000 Elsevier Science B.V. All rights reserved.