Bioprocesses for resource recovery from waste gases: Current trends and industrial applications

2022 ◽  
Vol 156 ◽  
pp. 111926
Author(s):  
Ramita Khanongnuch ◽  
Haris Nalakath Abubackar ◽  
Tugba Keskin ◽  
Mine Gungormusler ◽  
Gozde Duman ◽  
...  
1986 ◽  
Vol 18 (3) ◽  
pp. 57-67 ◽  
Author(s):  
I. B. Law

Growing environmental pressures and escalating intake water costs are causing an increasing number of industrialists to reappraise their effluent treatment facilities with a view to effluent recycle and/or resource recovery. In certain instances industrialists have opted for treated sewage effluent as a water source for their process. Water Management Schemes are being, or have been, implemented at a number of industrial concerns in order to rationalise overall water intake and effluent disposal costs.


Author(s):  
J. Cervantes-de Gortari ◽  
J. Torchia-Núñez ◽  
A. Hernández-Guerrero

Flow maldistribution is a fluid-management problem of interest in engineering. It consists in the non-uniform distribution of various flows in industrial applications like multiple accesses, manifolds, bifurcations, spreaders, etc., where the fluid currents separate, detach and reattach, break from the main body of the stream and splash within the conducts, etc. Several effects in the operation of most systems and apparatus where it occurs are common, including the interruption of fluid currents, malfunctioning, and high energy consumptions. The problem at industrial scale has been identified and treated mainly through empirical considerations, but no totally solved. It has been scarcely investigated however, in micro-technology applications with unforeseeable situations in theses very small area/volume scales, with appealing engineering tasks to solve. In any case, detailed analyses must be conducted using fluid mechanics models with experimental validation. In this paper the most relevant aspects of flow maldistribution in micro-systems where intense heat and mass transfer occur, are described. A review of their consequences and the current trends for their remediation, are presented. Examples in MEMS, fuel cells, micro-heat exchangers and micro-structured chemical reactors, are considered.


Nanomaterials ◽  
2020 ◽  
Vol 10 (10) ◽  
pp. 1950 ◽  
Author(s):  
Jörn Bonse

Nanotechnology and lasers are among the most successful and active fields of research and technology that have boomed during the past two decades. Many improvements are based on the controlled manufacturing of nanostructures that enable tailored material functionalization for a wide range of industrial applications, electronics, medicine, etc., and have already found entry into our daily life. One appealing approach for manufacturing such nanostructures in a flexible, robust, rapid, and contactless one-step process is based on the generation of laser-induced periodic surface structures (LIPSS). This Perspective article analyzes the footprint of the research area of LIPSS on the basis of a detailed literature search, provides a brief overview on its current trends, describes the European funding strategies within the Horizon 2020 programme, and outlines promising future directions.


Author(s):  
C. F. Oster

Although ultra-thin sectioning techniques are widely used in the biological sciences, their applications are somewhat less popular but very useful in industrial applications. This presentation will review several specific applications where ultra-thin sectioning techniques have proven invaluable.The preparation of samples for sectioning usually involves embedding in an epoxy resin. Araldite 6005 Resin and Hardener are mixed so that the hardness of the embedding medium matches that of the sample to reduce any distortion of the sample during the sectioning process. No dehydration series are needed to prepare our usual samples for embedding, but some types require hardening and staining steps. The embedded samples are sectioned with either a prototype of a Porter-Blum Microtome or an LKB Ultrotome III. Both instruments are equipped with diamond knives.In the study of photographic film, the distribution of the developed silver particles through the layer is important to the image tone and/or scattering power. Also, the morphology of the developed silver is an important factor, and cross sections will show this structure.


Author(s):  
W.M. Stobbs

I do not have access to the abstracts of the first meeting of EMSA but at this, the 50th Anniversary meeting of the Electron Microscopy Society of America, I have an excuse to consider the historical origins of the approaches we take to the use of electron microscopy for the characterisation of materials. I have myself been actively involved in the use of TEM for the characterisation of heterogeneities for little more than half of that period. My own view is that it was between the 3rd International Meeting at London, and the 1956 Stockholm meeting, the first of the European series , that the foundations of the approaches we now take to the characterisation of a material using the TEM were laid down. (This was 10 years before I took dynamical theory to be etched in stone.) It was at the 1956 meeting that Menter showed lattice resolution images of sodium faujasite and Hirsch, Home and Whelan showed images of dislocations in the XlVth session on “metallography and other industrial applications”. I have always incidentally been delighted by the way the latter authors misinterpreted astonishingly clear thickness fringes in a beaten (”) foil of Al as being contrast due to “large strains”, an error which they corrected with admirable rapidity as the theory developed. At the London meeting the research described covered a broad range of approaches, including many that are only now being rediscovered as worth further effort: however such is the power of “the image” to persuade that the above two papers set trends which influence, perhaps too strongly, the approaches we take now. Menter was clear that the way the planes in his image tended to be curved was associated with the imaging conditions rather than with lattice strains, and yet it now seems to be common practice to assume that the dots in an “atomic resolution image” can faithfully represent the variations in atomic spacing at a localised defect. Even when the more reasonable approach is taken of matching the image details with a computed simulation for an assumed model, the non-uniqueness of the interpreted fit seems to be rather rarely appreciated. Hirsch et al., on the other hand, made a point of using their images to get numerical data on characteristics of the specimen they examined, such as its dislocation density, which would not be expected to be influenced by uncertainties in the contrast. Nonetheless the trends were set with microscope manufacturers producing higher and higher resolution microscopes, while the blind faith of the users in the image produced as being a near directly interpretable representation of reality seems to have increased rather than been generally questioned. But if we want to test structural models we need numbers and it is the analogue to digital conversion of the information in the image which is required.


Sign in / Sign up

Export Citation Format

Share Document