EISSN : 20028008
Current Publisher: Linnaeus University (10.15626)
Total articles ≅ 211
Latest articles in this journal
Linnaeus Eco-Tech pp 537-543; doi:10.15626/eco-tech.1999.064
Abstract:Treatment of wastewater unavoidably results in the generation of huge quantities of sludge in which pollutants concentrate and which must be disposed of. The aim of this study was to compare the quality of organic matter, the metal composition and toxic organic content in different sewage sludge. The presence of these substances caused environmental damage in soil, plants, groundwater and air. Sewage sludge was periodically sampled from five treatment plant treated municipal and industrial wastewater in common in Almetevsk, Elabuga, Zainsk, Kazan, Chistopol (Tatarstan, Russia). Knowledge of the metal content of the sludge is a key step in selecting or in ruling out the various disposal alternatives. For the approval of possible utilization of sewage sludge as fertilizer the estimation of the chemical compounds has to be supplemented with the toxicity bioassay.
Linnaeus Eco-Tech pp 531-536; doi:10.15626/eco-tech.1999.063
Abstract:A method for bioremediation of petroleum derivatives contaminated soil was presented. It was applied in field conditions since 1993 to 1998. Results of the research work over petrol, oil and jet fuel biodegradation in soil were discussed. It was found out that efficiency of the process of biodegradation depends on the extent and kind of petroleum products contamination as well as a type of soil. It was demonstrated that the biological method applied in the research work allows to remove 80-99% of the hydrocarbons within 22-74 days.
Linnaeus Eco-Tech pp 527-530; doi:10.15626/eco-tech.1999.062
Abstract:Sensors discussed are designed to register acoustic waves and micro deformations in ground. Sensor technology is based on phase modulation that occurs in optical fiber when it is influenced by outside mechanical disturbance. In our paper we consider two possible ways of registration this phase modulation: fiber optic interferometer and mode to mode interference. These methods can be incorporated with various signal processing technique to obtain maximum efficiency of fiber optic sensor under the certain conditions. It is well known that optical fibers are widely used to transmit high band signals for long distances. In this case fiber sensitivity to environmental disturbances is a bad thing. But from other side the disturbances change propagating light properties (intensity, phase, polarization, etc.). This changes can be registered in the output light and after appropriate signal processing will give information about the parameters of the outside influence on the fiber. This is an idea in brief how optical fibers can be used as physical parameters sensors.
Linnaeus Eco-Tech pp 521-526; doi:10.15626/eco-tech.1999.061
Abstract:The preparation protein products is the impotent direction of reprocessing invaluable fish and other hydrocoles and their waste. Waste-free utilization of these resources assumes the complete recovery of meat used for the food purposes, obtaining the protein hydrolysates from the protein-containing waste and using the insoluble residue for manufacture of fodder flour. Protein hydrolysates are highly nutritious products. Properties of protein hydrolysates depend on initial raw material and methods of their obtaining. Protein hydrolysates have the greatest distribution for manufacture of broth concentrates, sauces and on the fodder purposes. But volume of consumption in the listed areas is rather limited. Using hydrocoles waste hydrolysates as bases of microbiological culture media for production and diagnosing of microorganisms in microbiological industry, medicine, veterinary science is the most advanced /5/.
Linnaeus Eco-Tech pp 503-519; doi:10.15626/eco-tech.1999.060
Abstract:The environmental problems of today have more and more border-crossing character. In the present paper the ecological problems of the german-polish border region of the Odra estuary, which form a border crossing ecological sensible unit, were studied for special parts of environmental protection, nature protection and water management regarding the quality of internal and external coastel waters, international conventions for protection of the Baltic Sea, cooperation in the field of protection and management of groundwater and waste water. A critical summarized evaluation based on the analysis was established which helps identifing the defizits and possibilities for progess of the bilateral cooperation and which indicate precise focal points for border-crossing fields of actions in the region of Odraestuary, to ensure a sustainable and continuing developpement of this region.
Linnaeus Eco-Tech pp 497-502; doi:10.15626/eco-tech.1999.059
Linnaeus Eco-Tech pp 479-485; doi:10.15626/eco-tech.1999.057
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Linnaeus Eco-Tech pp 489-496; doi:10.15626/eco-tech.1999.058
Abstract:In the present work the mechanisms of formation extended spots or strips of oil have been investigated with account of their physics-chemical characteristics under influence of dynamic particularities of top subhomogenious layer (in particular, circulation of Langmuir (LC)).
Linnaeus Eco-Tech pp 461-470; doi:10.15626/eco-tech.1999.055
Abstract:In order to achieve higher efficiency in use of materials and energy when providing a service or functionality of a product, indicator values can be used to point out the direction of development. The objective of the present study is to assess temporal variations of inventory data and identify significant environmental impacts for a product by using a life cycle assessment (LCA) approach. The study was restricted to a gate-to gate analysis of a Swedish manufacturer of NiCd batteries during the period 1983-1998. Inputs and outputs of materials and energy were compiled from environmental reports, which were related to the volume of produced batteries. The environmental impact was assessed by evaluation with different characterisation and weighting indices. The characterisation results regarding potential impact in resource use, global warming potential, acidification, eutrophication and aquatic ecotoxicity showed an average decrease of 2- 6 times during the period studied. The results of weighting showed that the environmental impact differed in the range -48 to 91 % per year according to the methods of ECO, ET, EDIP and EPS. The temporal variations of the results show the importance of choosing representative inventory data when making a LCA. Major reasons for the reduction in environmental impact were due to increased production meanwhile reducing dissipative emissions of metals. Evaluation with environmental indices is a great simplification of reality but it can help to identify significant environmental impacts of a product.
Linnaeus Eco-Tech pp 453-459; doi:10.15626/eco-tech.1999.054
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