Criterial approach to substantiation of the best available techniques for engineering protection against hazardous techno-natural processes

Прогнозирование мероприятий и строительства сооружений по инженерной защите от опасных процессов имеет целый ряд специфических особенностей, которые следует иметь в виду при разработке методологии обоснования наилучших доступных технологий. Математический аппарат, позволяющий обосновать выбор технологии инженерной защиты от опасных техноприродных процессов, которую можно отнести к наилучшим доступным технологиям, находится в стадии разработки. Представлен один из подходов, который позволяет на основе количественных оценок обосновывать выбор варианта инженерной защиты от опасных техноприродных процессов. За основу такого подхода принят экспертно-аналитический метод оценки риска от опасных природно-техногенных процессов, который в последние годы получил широкое развитие. Предложен математический аппарат, позволяющий обоснованно подходить к выбору наилучшей доступной технологии инженерной защиты от опасных техноприродных процессов с учетом возможностей собственника, его положения в текущей ситуации и перспектив развития. Prediction of measures and construction of facilities for engineering protection from hazardous processes has a number of specific features that should be borne in mind while developing a method for substantiating the best available techniques. The mathematical tools that provide for substantiating the choice of a technology for engineering protection from hazardous techno-natural processes, that can be assigned to the best available techniques, are under development. One of the approaches is presented that allows, on the basis of quantitative assessments, to substantiate the choice of an option of engineering protection against hazardous techno-natural processes. This approach is based on the expert-analytical method for assessing the risk from hazardous natural-technogenic processes that has been widely used in recent years. Mathematical tools have been proposed that provide for reasonably approaching the choice of the best available technique for engineering protection against hazardous techno-natural processes, taking into account the capabilities of the owner, his position in the current situation and development prospects.

Investigating best available technique for CO2 chemical absorption: solvent selection based on empirical surrogate model and exergy loss

The carbon dioxide concentration in the atmosphere has reached extremely high levels, generating environmental concerns. Unfortunately, despite the climate change, CO2 is not included nowadays as a key environmental issue in Best Available Technique (BAT) reference documents (BREF). Industrially, the widespread industrial technology to capture CO2 is the chemical absorption using aqueous monoethanolamine (MEA) at 30%wt, which is the basis of comparison for novel alternative techniques in the literature and seems a suitable candidate to be proposed as Best Available Technique. Nevertheless, there is an intense research to find alternative solvents that decrease the energy consumption for carbon capture and many solvents are claimed in the literature to outperform MEA. A novel empirical surrogate model and exergy balances are used to confirm that MEA is still the best candidate to be proposed as Best Available Technique. The surrogate model proposed in this study properly regresses the CO2 gas liquid equilibrium data. The regressed parameters of the model are tabulated in this study for many aqueous alkanolamines and their mixtures, being the basis for computationally inexpensive chemical absorption column design. The surrogate model parameter considering the temperature is related with the chemical absorption energy and the consumed energy for solvent recovery. The obtained results show that none of the considered alkanolamine outperforms MEA in all the considered aspects, i.e. energy and solvent flowrate. MEA minimum flowrate is 15.62 mol solvent/mol gas and its heat of absorption regression parameter is − 27,745 J/mol. The proposed mathematical method is useful as a fast assessment for other novel alternatives that will be proposed in the future, providing energetically more efficient and cleaner technologies for CO2 capture. Graphic abstract

Application of the Analytic Hierarchy Process (AHP) to select the best oil spill cleanup method in marine protected areas for calm sea condition

<p>Oil spill cleanup is a complex and expensive activity. There are several commonly used techniques available today. The paper suggests criteria for the selection of the best available technique that could be employed in case of oil spills in the Mediterranean Sea under specific circumstances, i.e. calm sea and presence of marine protected areas, in order to prevent pollution. Not all the available techniques could be considered. Only three of them could be selected, as these allow the preservation of natural areas, as well as the protection of threatened species and their habitats. The Analytic Hierarchy Process method has been preferred among the great variety in multi-criteria decision making tools for the selection of the best available technique. This is a widespread decision support tool suitable for the selection of the best alternative solution to a particular problem. Twenty professionals with different expertise evaluated, through pair-wise comparisons, the alternative options to choose in a protected area. The selected emergency cleanup technique must be readily available and operational in a short time. The results give a preference to new sorbents, followed closely by the magnetic nanocomposites technique.</p>

Comparison of the best available technique indicators for processing animal tissues

A method comparing the technologies used in the industry processing animal tissues with the best available techniques (BAT) based on the principle of an integrated pollution prevention and control (IPPC) is suggested. The method compares individual mutually comparable BAT indicators expressed by quantities indicating the standard of the method compared in relation to BAT. The method can be applied to compare the environmental standard of the equipment to which the Act No. 76/2002 Dig. of the relevant production branch relates.