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This study describes the industrial use of waste generated from the brewing industry, specifically sludge from a wastewater treatment plant. The processing technique was developed to produce ceramic material with the potential for use as a lightweight aggregate in construction. This waste is usually dumped in landfills, but the current increase in restrictions on dumping and interest in improving the environment make our proposal for gaining value from this sludge a significant contribution. The chemical composition of the raw materials was analyzed (using X-ray fluorescence and elemental analysis) and their thermal behavior evaluated (thermogravimetric analysis and differential thermal analysis). To determine the effect of adding sludge to the aggregate, different compositions were then prepared and tested. To obtain the material's final resistance and cohesion, the dried sample was subjected to a firing process in a kiln. The samples were prepared without special pre-treatment steps, such as milling, and without the addition of expansive additive. The new aggregate has a low bulk density, due to the formation of an internal cellular structure, a porous internal and a partially vitrified external shell. As waste is added, water absorption increases by values of 17-26 %, as does the porosity, resulting in a linear relationship between the pore volume and percentage of sludge added.

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In this study, a method for solving a probabilistic three-phase power flow in radial distribution networks and taking into account the technical constraints of the system is presented. Regulation of voltage is one of the main problems to be taken into account in networks with distributed generation. The present study introduces a probabilistic model to determine the performance of the distribution system. This study considers the random nature of lower heating value of biomass and loads. This study presents a new hybrid technique combining the shuffled frog leaping algorithm with probabilistic three-phase power flow that is solved by Monte Carlo method. Feasible results are achieved in a few iterations. The results show that the proposed technique can be applied to keep the voltages within the limits specified at each node of a distribution network with biomass power plants. The outcomes are attained using the unbalanced distribution system IEEE-13 node and connecting biomass power plants at some nodes. This study shows that the power losses and voltage unbalance are reduced as a result of the inclusion of distributed generation.

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The properties of ceramic materials are intimately related to a variety of factors, among them shaping procedure and sintering time. These factors condition, the microstructure and properties of the materials developed. Our study has formed materials from clays commonly used in the area of Bailén (Jaén) and wet pomace proceeding from the extraction of olive oil. The materials were shaped through extrusion. In this study, raw materials have been characterized and studied interesting properties of sintered materials, such as compressive strength, water absorption, open porosity or bulk density. The study concluded that the addition of wet pomace from olive oil industry into traditional brick entails a saving of raw materials and reducing the environmental impact generated by their manufacture. The best results are obtained for the samples with waste content of 3 wt %.

react with the atmosphere of the sintering oven, yielding compounds, which produce a diminution of the end product In this paper, the authors have studied the eVects of properties.3 the diVerent sintering atmospheres (vacuum, nitrogen-Nitrogen present in sintering atmospheres spreads rapidly hydrogen, and dissociate ammonia) on 50A-50F duplex at the high temperatures, the pieces are treated, which lead stainless steels, fabricated by the powder metallurgy to surface eVects. If the cooling speed is not rapid enough, process.there is a precipitation of chrome nitride in the edges of The DSS sintered in atmosphere of N 2 -H 2 exhibit a the grain and intragranularly in the ferrite.4 tensile strength of at least 500 MPa with an elongationThe solubility of the nitrogen present in the sintering to fracture smaller than 2%. The presence of nitrides atmosphere, in iron alloys, depends on5-7 the composition was the main cause of the deterioration in the corrosion of the alloy, the crystalline structure of the alloy, the oven resistance.PM/0994 temperature, and the pressure.When the composition of the alloy varies, the solubility Dr Corpas Iglesias