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One of the main environmental issues of society today is the continuous increase in the amount of organic waste. Sustainable organic waste management no longer supports old practices that involved uncontrolled releases, landfill storage or incineration. A potential solution is converting organic matter into energy. Previous papers dealt with energy recovery of animal proteins and fats from tanneries into biogas and biodiesel after separation of the two components by pressing-centrifugation at temperatures of 60-80...

Different operations, such as fleshing, trimmings, cuttings and chips from hides, causes leather industry in being one of the most environmental пїЅunfriendlyпїЅ sectors. Moreover, the treatment of sewage waters brings up also the problem of mud which is related with the appearance of biodegradation process of organic waste, followed by the emission of greenhouse gases, especially methane and nitrous oxide. All these wastes also imply a terrible smell and a strong land contamination. The large quantity of wastes, ...

The paper presents a 1D numerical modeling of the water flow on River пїЅAlbпїЅ, the village of Coroie?ti пїЅ S?la?ul de Sus in Hunedoara County, Romania, aiming to establish the influence of a hydraulic structure built on a left side branch, on the main river channel. The purpose for the hydraulic structure towards a trout fish farm, designed with respect to the enforced specific national regulations. The numerical model simulations are to support the study of water flows and levels on both the river main course ...

Due to high quantities of animal fat resulted from leather industry, the necessity of a solution in order to neutralize the negative effects that appear by their discharge into the nature has led to continuous research in order to obtain the most suitable one for solving the environmental issue with energy recovery. Between combustion and chemical treatment, the combustion has been chosen in this study as being the most effective one, by technical and economical criteria. Before this combustion, there were perform...

The leather sector is an important source of materials for various industries and fields.This industry generates a big quantity of solid and liquid waste.The whole process that the skin is subjected to contains a series of operations and chemical reactions.Waste from the leather industry can be obtained by using multiple processing methods in different areas. Recovery of waste from the leather industry is an important factor for environmental protection. Nowadays, the elaboration of leather processing methods that...