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The main objective of the paper consists to analyze the adsorption process for capturing the carbon dioxide generated from the fossil fuel power plants. For simplifying our analysis, we have considered that the stream contains only carbon dioxide and nitrogen in a mole concentration of 13/87 %. The adsorption process was simulated in the Aspen Adsorption V9 considering silica gel impregnated with...
The electrostatic adsorption method can be used to produce composite materials with an arbitrary structure, and their properties may be tuned by changing the size of the individual components, which in turn alters the composition of the material. To develop a thermally conductive and electrically insulating composite material with high thermal conductivity and an acceptable breakdown strength, polymethylmethacrylate...
Since mechanical chillers account for a large fraction of electricity spent on cooling, data centers are looking for ways to reduce their usage. In High Performance Computing, a popular approach is to use readily available high temperature direct liquid cooling (HT-DLC) that allows for mechanical chiller free cooling of compute components. Additionally, it provides a means to re-use their waste heat...
The adsorption chiller technology makes possible to construct the chillers that can be powered by a low temperature heat source, which improves the efficiency of the energy and minimises the level of environmental pollutions. It has been found that adsorption chillers are valuable when the heat source is affordable as cogeneration, solar, geothermal, or waste heat sources, especially in situations...
The most promising materials in the development of electro-active material for lithium-ion battery electrodes is the modified carbon black. This paper presents the results of research of carbon black after thermal and thermal oxidative modification by the method of Raman spectroscopy. The spectra and the comparative analysis of the modified samples are listed.
Batch adsorption equilibrium of the sulfur compounds from diesel oil using two types of commercial activated carbon was studied in a two-level factorial experimental design method. This technique has been used to investigate the impacts of several factors controlling the adsorption process, such as source of sorbent material, amount of sorbent material used, and temperature. High percentages of adsorption...
Activated carbon has been prepared from pomegranate peels using phosphoric acid and steam as activating agents. The influence of activation temperature and time on the yield, the pore structure and the adsorption capacities of the prepared activated carbon was investigated The samples were characterized using N2 adsorption at 77 K, Boehm method and adsorption of iodine, phenol and méthylène blue in...
A Nnao adsorption solar power cooling generator unit is design, built, and operated under the climate of Mutah University. The adsorption solar power consists of the generator, condenser, vacuum pump, and evaporator (cold chamber). The activated carbon methanol is set as adsorption pair. The thermal impact of the modified paints on the collector performance by adding certain nano-materials to the...
Red soil in southern hill region is an adsorbent with the characteristics of economy, accessibility and so on. The phosphorus adsorption characteristics of red soil were studied in this paper. Differences in parameters of phosphorus absorption at different concentrations with different weights of red soil were compared, and the influence of temperature and pH on the phosphorus adsorption was discussed...
A absorbent was chose to absorb CS2 from industrial activated carbon (AC), 13X, NaY, ZSM-5. The results indicate that the adsorption of CS2 of the industrial activated carbon is better than the others. The modification of industrial activated carbon (AC) has been used in laboratory in order to make full use of high concentration CO comprehensively. AC was impregnated with Cu(Ac)2, Zn(Ac)2, Mn(Ac)2...
This paper first introduced the physicochemical properties of diatomite and reviewed its modified approaches and adsorption capacity for various dyes. Then the effects of pH, temperature and other factors on its adsorption performance were discussed. Subsequently, we summarized its adsorption mechanisms and isotherms and it was found that the main mechanism on its adsorption of dyes was physical adsorption:...
Chemical oxygen demand (COD) have been the crucially problematic parameters in refinery wastewater treatment. This study was conducted to investigate the COD removal effectiveness in refinery wastewater with the activated pretreatment petroleum coke (APPC) prepared by combination of chemical activation with KOH solution and physical activation with calcination at lower temperatures. Adsorption experiments...
Adsorption properties of Fe(II) and Mn(II) by palygorskite were investigated using a batch adsorption, and the effects of contact time, roasting temperature and acid concentration for activation on adsorption removal of Fe(II) and Mn(II) were studied. Results showed that the adsorption sites of palygorskite were well exposed to both kinds of metal ions, and the equilibrium adsorption was reached within...
Cr(VI) has posed great threat on environmental safety and human health, thus the remediation of Cr(VI) pollution is of considerable importance. The adsorption of Cr(VI) from aquatic solution using activated carbon was studied in this paper. The Cr(VI) sorption was relative to pH, contact time, initial content of solution, adsorbent dose and temperature. The maximum removal efficiencies of Cr(VI) were...
The low-cost activated carbon was prepared from sugarcane bagasse, an agricultural waste material, by chemical activation with different reagents. Orthogonal experimental design was applied to study the influence of activation temperature, activation time and chemical ratio of reagents to sugarcane bagasse on the chemical activation process of sugarcane bagasse. The optimal activated carbon was obtained...
Organic zeolite (CTAB-Z) was modified with cationic surfactant-cetyltrimethylammonium bromide (CTAB) in this study under the following conditions: CTAB concentration 1.0% (wt%), modification temperature 25°C, modification time two hours and used to remove SO42- from water and wastewater as adsorbent. Some factors which influence the removal ratio of SO42- from water sample such as mesh size of CTAB-Z,...
The adsorption of lead by soils is strongly influenced by temperature and various soil characteristics. Soil pH is one of the most important parameters influencing lead-solution and soil-surface chemistry since it affects lead speciation and the charge of soil surface groups. In general, lead adsorption is small at low pH values, and it increases with the increase in soil pH. Some investigations supported...
Zeolit/Ag+ composite particles material (ZACPM) had been prepared using zeolite as carrier by carrying Ag+, solidifying Ag+ stably in the holes of zeolite and enhancing the adsorption property of zeolite. The effects of technological parameters on preparation of ZACPM, the air purification properties such as antibacterial property and the function of eliminating harmful gases and the microstructure...
This study attempted to find the adsorption law of fly ash to COD in domestic sewerage. After the elementary characterization of fly ash was described, the influence of contact time, sorbent concentration, and different pretreatment ways of fly ash, initial COD concentration and temperature on the adsorption process was investigated. Results showed adsorption equilibrium attained within 120 min time...
The adsorption of diesel oil in seawater on biodegradable adsorbing material and the influencing factors such as salinity, pH and temperature were studied. Results showed the adsorption of diesel fitted the second-order reaction model, and the saturated adsorption capability was 6.69g/g which can be reached in 10-20min. The diesel oil removal efficiency increased with the increment of salinity and...
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