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Academic literature on the topic 'Sorption guly'
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Journal articles on the topic "Sorption guly"
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ΜΑΡΓΑΡΙΤΗΣ, Ι. "Contribution of mineralogical sedimentological and geochemical characteristics of deltaic deposits in the 137Cs sediment concetration." Bulletin of the Geological Society of Greece 34, no. 3 (January 1, 2001): 1107. http://dx.doi.org/10.12681/bgsg.17168.
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This parer provides a review of the factors governing 137Cs sorption in sediments. We have specially focused in the correlation between sorption and the sedimentological mineralogical and geochemical characteristics of the sediments. Literature conclusions in experimental as well as field studies on 137Cs sorption is that 137Cs is strongly correlated with the < 20μηι fraction of the sediment as well as illite content. Other clay minerals such as smectite, kaolinite and chlorite sorb 137Cs in a lesser degree. Furthermore organic material and Fe-Mn hydroxides, act like sorptive surfaces. Our data on 137Cs activity variation based on field studies from deltaic deposits (Arachthos delta, Amvrakikos gulf, Greece)is also discussed. The results of this studies confirm the above mentioned, since 137Cs activity is strongly correlated with the clay fraction and the illite content,while a lesser correlation is indicated for total organic carbon Fe and Mn content of the sediments.
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Shikina, N. V., S. R. Khairulin, N. A. Rudina, T. N. Teryaeva, E. S. Mikhaylova, and Z. R. Ismagilov. "Investigation of the Sorption Properties of Ore Materials for the Removal of Sulfur Dioxide from Exhaust Flue Gases of Power Plants." Eurasian Chemico-Technological Journal 17, no. 2 (October 22, 2015): 137. http://dx.doi.org/10.18321/ectj204.
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The prospects of using a natural material – ferromanganese nodules (FMN) from<br />the Gulf of Finland – as the SO2 adsorbent are discussed. The starting material was<br />studied as pellets and powder using X-ray fluorescence spectroscopy, XRD, BET,<br />and mechanical strength analysis; dependences of physicochemical parameters of<br />the material on heat treatment at 100-1000 ºC were found. FMN samples were tested in the process of SO2 sorption. The sorptive capacity of FMN samples for SO2 was found to increase with humidity of adsorbents; FMN samples with a humidity above 40% were shown to be promising for the removal of sulfur dioxide from gases.
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Ahmady-Asbchin, Salman, and Naser Jafari. "Removal of nickel and zinc from single and binary metal solutions by Sargassum angustifolium." Water Science and Technology 68, no. 6 (September 1, 2013): 1384–90. http://dx.doi.org/10.2166/wst.2013.375.
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The capability of Sargassum angustifolium in removing nickel (Ni) (II) and zinc (Zn) (II) from single and binary metal solution was determined. In binary solution the presence of the secondary metal inhibited the sorption of the primary metal by S. angustifolium but the inhibitory effect of Ni during sorption of Zn is stronger than the inhibitory effect of Zn in absorption of Ni. The total metal (Ni + Zn) sorbed from the binary metal solution by S. angustifolium cells always remained lower than the total sorption of individual metals from their respective single metal solutions, thereby suggesting competition between Ni(II) and Zn(II) for the common binding sites on S. angustifolium. The maximum uptake capacities of the S. angustifolium, which was collected near Bushehr, Persian Gulf, Iran in the natural form, at the optimal conditions for Ni(II) and Zn(II) ions in single metal solutions were approximately 0.71 and 0.93 mmol/g dry S. angustifolium, respectively. Under the binary system Ni(II) and Zn(II) uptake capacities were 0.41 mmol Ni/g and 0.36 mmol Zn/g, respectively. Better fitness of equilibrium metal sorption data to the Langmuir than the Freundlich model suggests multilayer adsorption of test metals onto the cell surface.
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Pontoh, Julius, and Audy Wuntu. "Perbaikan Proses Pembuatan Gula Merah Aren di Pabrik Gula Aren Masarang Tomohon." Jurnal MIPA 3, no. 2 (July 25, 2014): 68. http://dx.doi.org/10.35799/jm.3.2.2014.5316.
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Pabrik gula aren Masarang Tomohon saat ini memiliki masalah rendahnya efisiensi produksi akibat pembentukan bongkahan gula selama tahap akhir pemprosesan gula. Tujuan penelitian ini adalah untuk meningkatkan efisiensi proses produksi gula di pabrik dengan penekanan pada sorpsi air oleh gula dan pada penghancuran bongkahan gula selama produksi serbuk gula aren (gula semut). Umur simpan gula merah aren diestimasi dengan kurva isoterm absorpsi menggunakan rumus Labuza. Penghancuran gula dilakukan mula-mula melalui penentuan jenis gilingan, diikuti dengan membuat desain gilingan dan membangun konstruksi gilingan. Perhitungan umur simpan gula menghasilkan angka 6,4 tahun umur simpan. Konstruksi gilingan gula dibuat didasarkan pada gilingan martil (hammer mill) dengan kapasitas untuk mengurangi sisa produk hingga 1,28 persen.The Masarang Palm Sugar Factory in Tomohon is currently facing to the problems of the low efficiency production due to the crumble formation during the last step of sugar processing and the question of the shelf life of the product. Therefore the goal of this research is to improve the palm sugar processing at the factory by focusing to the understanding the water sorption by the sugar and to break down the sugar crumbles during the brown sugar powder production. The shelf life of the brown palm sugar was estimated by the isotherm absorption curve followed by application of Labuza formula. The sugar milling was processed by firstly determined the milling type, followed by designing the mill and then constructed it. The calculation of shelf life of the sugar product was found as 6.4 years. The sugar milling was constructed based on the hammer mill with the capacity to reduce the crumbles as low as 1.28 percent.
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Gong, Yanyan, Xiao Zhao, S. E. O'Reilly, Tianwei Qian, and Dongye Zhao. "Effects of oil dispersant and oil on sorption and desorption of phenanthrene with Gulf Coast marine sediments." Environmental Pollution 185 (February 2014): 240–49. http://dx.doi.org/10.1016/j.envpol.2013.10.031.
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Makkaveev, P. N., Yu R. Nalbandov, A. A. Polukhin, and S. A. Schuka. "Dynamics of dissolved inorganic carbon in the Yenisey gulf during open water period." Океанология 59, no. 5 (November 5, 2019): 701–13. http://dx.doi.org/10.31857/s0030-1574595701-713.
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On the materials of several SIO RAS cruises and archival hydrological and hydrochemical data, the dynamics of dissolved inorganic carbon in the Yenisey Gulf was investigated. There are 3 main areas, where mass sedimentation of suspended matter and oxidation of organic matter (OM) in the upper sediment layer takes place. The first region of oxidation of OM was south of 72 N, its existence is associated with mass sedimentation of dissolved and suspended matter on the geochemical barrier. Two other areas of decomposition of the OM (elevated dCtot) are located downstream (between 73 and 74 and north of 75 N) and most likely originated at the orographic barrier, where the change in the dynamic characteristics of the riverine flow and the topography of the bay bottom creates conditions for sedimentation. Comparison of the difference in the observed Ctot value with the AOU value showed that in 1993, the change in the Ctot content was provided by the oxidation processes of OM. In 2011, carbon emission into water was most likely associated with the transformation of mineral suspension and/or carbon exchange in bottom water with bottom sediments. In 2016, a decrease in the Ctot content was observed almost everywhere in bottom layer. It is most realistic to assume that such a distribution is associated with carbon sorption on suspensions. Despite the many similar features of the distribution of hydrochemical characteristics in the bay, the change in the content of dissolved inorganic carbon in the investigated area has differed greatly in different years. In our opinion, the reason for the fact is the variability of the discharge of the Yenisey River in different years.
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Simperler, Alexandra, Martin D. Foster, Olaf Delgado Friedrichs, Robert G. Bell, Filipe A. Almeida Paz, and Jacek Klinowski. "Hypothetical binodal zeolitic frameworks." Acta Crystallographica Section B Structural Science 61, no. 3 (May 13, 2005): 263–79. http://dx.doi.org/10.1107/s0108768105013340.
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Hypothetical binodal zeolitic structures (structures containing two kinds of tetrahedral sites) were systematically enumerated using tiling theory and characterized by computational chemistry methods. Each of the 109 refineable topologies based on `simple tilings' was converted into a silica polymorph and its energy minimized using the GULP program with the Sanders–Catlow silica potential. Optimized structural parameters, framework energies relative to α-quartz and volumes accessible to sorption have been calculated. Eleven of the 30 known binodal topologies listed in the Atlas of Zeolite Framework Types were found, leaving 98 topologies that were unknown previously. The chemical feasibility of each structure as a zeolite was evaluated by means of a feasibility factor derived from the correlation between lattice energy and framework density. Structures are divided into 15 families, based on common structural features. Many `feasible' structures contain only small pores. Several very open structures were also enumerated, although they contain three-membered rings which are thermodynamically disfavoured and not found in conventional zeolites. We believe that such topologies may be realizable as framework materials, but with different elemental compositions to those normally associated with zeolites.
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Pfannkoch, Edward A., John R. Stuff, Jacqueline A. Whitecavage, John M. Blevins, Kathryn A. Seely, and Jeffery H. Moran. "A High Throughput Method for Measuring Polycyclic Aromatic Hydrocarbons in Seafood Using QuEChERS Extraction and SBSE." International Journal of Analytical Chemistry 2015 (2015): 1–8. http://dx.doi.org/10.1155/2015/359629.
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National Oceanic and Atmospheric Administration (NOAA) Method NMFS-NWFSC-59 2004is currently used to quantitatively analyze seafood for polycyclic aromatic hydrocarbon (PAH) contamination, especially following events such as the Deepwater Horizon oil rig explosion that released millions of barrels of crude oil into the Gulf of Mexico. This method has limited throughput capacity; hence, alternative methods are necessary to meet analytical demands after such events. Stir bar sorptive extraction (SBSE) is an effective technique to extract trace PAHs in water and the quick, easy, cheap, effective, rugged, and safe (QuEChERS) extraction strategy effectively extracts PAHs from complex food matrices. This study uses SBSE to concentrate PAHs and eliminate matrix interference from QuEChERS extracts of seafood, specifically oysters, fish, and shrimp. This method provides acceptable recovery (65–138%) linear calibrations and is sensitive (LOD = 0.02 ppb, LOQ = 0.06 ppb) while providing higher throughput and maintaining equivalency between NOAA 2004 as determined by analysis of NIST SRM 1974b mussel tissue.
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Vaalama, Anu, Helinä Hartikainen, Henry Vallius, and Kaarina Lukkari. "Phosphorus exchange in eutrophied coastal brackish water sediments—sorption pattern, potential and factors affecting them." SN Applied Sciences 1, no. 11 (October 11, 2019). http://dx.doi.org/10.1007/s42452-019-1374-7.
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Abstract Phosphorus (P) exchange in clayey mud sediments was investigated with desorption–sorption isotherms at 22 coastal sites in the eutrophied brackish Gulf of Finland, the Baltic Sea. The aim was to gain information on P sorption potential and pattern of oxygenated surface sediments and to elucidate factors explaining them. Modified Freundlich equation was fitted to the isotherm data and used for calculation of the P exchange parameters EPC0 (equilibrium P concentration at zero net sorption), kEPC0, k15 and k100 (P buffering capacities at early, middle and high sorption stages, respectively). They were further used to assess the P sorption potential and pattern of the sediments. Sediment properties explaining the P sorption potential at different sorption stages were identified. The greatest sorption potentials were recorded in originally poorly oxic sediments in the inner archipelago with accumulated fine particulate material, high in adsorbents for P, transported from the watersheds. After oxygenation, they were high in amorphous Fe-oxyhydroxides, which explained their efficient P sorption (kEPC0 > 1.32 l g−1). Poorer P sorption (kEPC0 0.45–0.84 l g−1) was recorded in fine sediments abundant in Al-oxyhydroxides, presumably due to their higher original P occupation degree. The lowest sorption potentials were found in the outer archipelago sediments. Their lowest specific surface areas and highest original P contents referred to scarcity of adsorbents and high occupation degree of the existing ones. These results suggest that the coastal clayey mud sediments investigated possess high P sorption potential, which can be markedly diminished by eutrophication-induced hypoxia but recovered if oxygen conditions improve.
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Dokhani, Vahid, Mengjiao Yu, Chao Gao, and James Bloys. "Investigating the Relation Between Sorption Tendency and Hydraulic Properties of Shale Formations." Journal of Energy Resources Technology 140, no. 1 (August 22, 2017). http://dx.doi.org/10.1115/1.4037480.
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Routine measurement of hydraulic diffusivity of ultralow permeability rocks, such as shale, is a prolonged process. This study explores the effects of a sorptive characteristic of the porous medium on hydraulic diffusivities of shale rocks. The examined rock types include Mancos Shale, Catoosa Shale, Eagle Ford Shale, and core samples from the Gulf of Mexico. First, the adsorption isotherms of the selected shale rocks were obtained. Then, the hydraulic properties of the selected shale rocks were determined using Shale/Fluid Interaction Testing Cell, which employs pore pressure transmission technique. The experimental results show that the moisture content of shale is correlated with water activity using a multilayer adsorption theory. It is found that the adsorption isotherms of various shale formations can be scaled using their respective cation exchange capacity (CEC) into a single adsorption curve. Analyzing the transient pore pressure response in the downstream side of shale sample allows calculating the transport coefficients of shale samples. Hydraulic properties of shales are obtained by matching the pore pressure history with one-dimensional coupled fluid flow model. The experimental results indicate that sorptive properties can be inversely related to the hydraulic diffusivity of shale rocks. It is found that with an increase in the magnitude of sorption potential of shale, the hydraulic diffusivity decreases. This study is useful for shale characterization and provides a correlation, which can have various applications including, but not limited to, wellbore stability prediction during well planning.
Dissertations / Theses on the topic "Sorption guly"
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Coover, James Brigham. "Phosphorus sorption and desorption in ephemeral gully erosion." Thesis, Kansas State University, 2014. http://hdl.handle.net/2097/17865.
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Master of ScienceDepartment of Agronomy
Nathan O. Nelson
Phosphorus (P) is an essential nutrient in crop production, but P inputs to surface waters have resulted in impairments such as eutrophication and algae blooms. Non-point sources such as agricultural fields are a main contributor of P. Kansas, being a high agricultural dependent state, has frequent fresh water body impairments. Multiple erosion and transport processes contribute to P loss. While P loss from sheet and rill erosion has been studied extensively, P loss from ephemeral gully erosion is largely unknown. The objective of this study is to understand the effects ephemeral gullies have on the transport and transformation of P. Three fields in McPherson County with well-defined ephemeral gullies were studied. Soil samples were taken in field locations that are effected by ephemeral gullies at the 0 to 2, 2 to 5, 5 to 15, and 15 to 30 cm depths. Samples were analyzed for total P, anion exchange phosphorus (AEP) (labile P), ammonium-oxalate extractable Fe, Al, and P (Fe[subscript]ox, Al[subscript]ox, P[subscript]ox), Mehlich 3 extractable Fe, Al, Ca, and P (Fe[subscript]M3, Al[subscript]M3, Ca[subscript]M3, P[subscript]M3), equilibrium phosphorus concentration at zero net sorption (EPC[subscript]0), 1:1 soil to water pH, and texture. Soil testing showed that P quantities tend to be much higher in surface soils eroded by sheet and rill erosion and lower in subsoil soil that is eroded by ephemeral gullies. The quantity of sorptive elements such as Fe and Al, were not significantly different throughout the tested area except in areas of changing soil texture. EPC[subscript]0 testing showed it was likely that P desorbs from the surface erosion of sheet and rill and is adsorbing onto the subsoil eroded from ephemeral gullies. Sediment eroded by ephemeral gullies has a P buffering capacity greater than the sediment eroded by sheet and rill, and a small quantity of ephemeral gully subsoil will have a large effect on the dissolved P concentration of runoff. Sediment, total P loss and expected dissolved P in runoff was surveyed and modeled for two of the fields. Ephemeral gullies contributed to a majority of sediment and total P loss. The addition of ephemeral gully sediment to the erosional mix of sheet and rill sediment caused the dissolved P concentration to decrease from 0.0204 to 0.0034 mg L[superscript]-1 in one field and from 0.0136 to 0.0126 mg L[superscript]-1 in another. The results of this study show that best management practices (BMPs) such as grass waterways could cause the losses of total P to decrease as much as 2 to 12 times in fields with ephemeral gullies. However, reducing ephemeral gully erosion will likely increase dissolved P concentrations up to 600% more in runoff. Therefore, BMPs need to be combined to fully control P loss from agricultural fields.
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Gulu, Zada Leyla [Verfasser]. "Sorption of Selected Pesticides on Mineral Surfaces : Factors and Mechanisms / Leyla Gulu Zada." Tübingen : Universitätsbibliothek Tübingen, 2021. http://d-nb.info/1228858268/34.
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Opršálová, Žaneta. "Zdravotně technické instalace v polyfunkčním objektu." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2018. http://www.nusl.cz/ntk/nusl-372039.
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The diploma thesis deals with the problems of sanitation installation in a multifunctional building in Třinec. The theoretical part focuses on the analysis of the topic, with emphasis on the draining and cleaning of waste water. The thesis also focuses on possible solutions given specialization. The project solves the sanitation installation of the multifunctional building in the selected variant. It is a multistorey building where are supermarket, shop, pharmacy, cafe, public toilets, fitness center and commercial space.
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Hlaváčová, Zuzana. "Zdravotně technické a plynovodní instalace ve výrobní hale." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2015. http://www.nusl.cz/ntk/nusl-227211.
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The diploma thesis solves question about sanitation installations and gas installation on the factory floor in Tišnov. The theoretical part deals with draining and cleaning of waste water containing oil products. The work also focuses on possible solutions given specialization. Project part solves sanitation installations and gas installation on the factory floor in the selected variant of the object. This is a large hall with an administrative part.