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This paper proposes the realization and preliminary characterization of a smart sensor platform for the online monitoring of the residual life of activated carbon air based filters. The platform performs the measurement to give reliable information about the filter maintenance or early warning for the presence of dangerous gases both in industrial and military scenarios. A preliminary feasibility...
SF6 insulated electric power equipment is usually equipped with adsorbents to control the humidity and contents of decomposition products, which will affects the accuracy of monitoring results obtained by analyzing the decomposition compound. In this paper, adsorption efficiency of three frequently-used molecular sieves, including 4A, 5A and KDHF-03, were comparatively studied. The adsorption kinetics...
As an alternative to conventional batch chromatography as a discontinuous process, the simulated moving bed process (SMB process) as a continuous Chromatographie separation process gained more and more impact recently. For economically optimal operation of the process, a model based control and optimisation scheme is preferable. As part of this scheme, an one-line parameter and state estimation approach...
A high-resolution time series of the spectral reflectance of drying, sandy soils reveals sensitivities to the drying process that appear to be characteristic of the disposition of water on the surface of the soil. The increase in reflectance is clearly related to the decrease in overall water content, but the spectral details of the relationship are dependent on the link between soil and water at...
We present a new control approach for a wearable artificial kidney device, which is currently under development. In contrast to conventional dialysis, this device makes use of a selective adsorption filter which enables miniaturization and thereby a mobile application also out of clinical settings. To facilitate such an unsupervised treatment the device is equipped with diverse sensing capabilities...
The design of intelligent monitoring system which can be use to monitor the situation of fire and the leakage of housing is based on STC12C5608AD MCU and MQ-2 gas sensor meanwhile it includes the human body infrared module and an acousto-optic monitoring module, monitoring of the indicators by each module, and the detection result is transmitted to the micro controller. Once there is something dangerous,...
In view of the possibility of Phenol pollution accident existing in source water, experimental study on the application of powdered activated carbon (PAC) regarded as an emergency way to Phenol pollution treatment is performed in this article, taking the water from Songhua River as raw water. Comparing the Phenol adsorption efficiency of four types of powdered activated carbon through static tests...
The adsorption behavior of modified polyamide resin for resorcinol was studied with the static method .The static adsorption test results showed that the optimum medium was pH =6, temperature was 25°C, and the oscillation time was 60 minutes. The adsorbed quantity was at 8.715mg/g,the rate of adsorption was 85% and the removal rate was the best. Adsorption isotherm was well in line with the Freundich...
Abundant of estrogens is excreted via human urine, bringing the risk of micro-pollution during nutrients recovery from urine. This study investigated the characteristics of estrogens during the ammonification of urine, and then experiments were conducted to study the adsorption of estrogens on struvite, a potential product to recover nutrients from urine. The results showed that no 17a ethinylestradiol...
The adsorption performance of aminoalky cellulose (AmAC) for 2,4,6-trinitrotoluene (TNT) was investigated in a fixed bed column. The fixed bed column parameters such as bed height, flow rate, influent TNT concentration were studied by a series of dynamic adsorption experiments. The result showed AmAC was an effective adsorbent for removal of TNT, and the equilibrium uptake increased from 27.76 to...
Activated coke flue gas desulfurization technology (FGD) which has the advantages of water-saving and pollutant recyclable utilization is considered the important development direction of FGD. In this paper, effect mechanism of O2 and H2O in simulated flue gas on SO2 conversion and existence form in activated coke is studied through the methods of fixed bed and ion chromatography. The research results...
The studies in recent years about performance reinforcement in the ammonia falling film absorption are introduced in this paper. The enhancement methods and absorption performance influencing factors are summarized and analyzed. Some deficiencies in this research field are pointed out and future research directions are also discussed. It is pointed out that a combination way of physical treatment,...
An novel technology of CO2 capture from coal-fired flue gas is Ammonia chemical adsorption method. Experimental system of CO2 adsorption by ammonia water is established on the base of a bubble column reactor in this paper. Effects of key parameters on CO2 adsorption process, such as ammonia water concentrations, PH values of solutions, C/N molar ratios, amounts of water brought by gas, are studied...
Organic matter (OM) is important for ammonium sorption in lake sediments, but as a matter of fact, there is no general consensus about the effects of OM on ammonium adsorption behavior. In this study, the sediment samples of different OM contents and the different components of organic matter were gained from Wuli Lake sediment through pretreatment, then the ammonium adsorption kinetics and thermodynamics...
The concentrated leachate of the Chengdu Leachate Treatment Plant was collected as a subject of case study. It was a very dark coloured liquid possessing high COD, very low BOD5 and low ammonia nitrogen concentration. The combination of coagulation and fly ash absorption was used to treat the concentrated leachate in this study. The effects of pH, coagulant dosage and settling time on COD removal...
Feasibility of extracting water from air on ship's environment was evaluated on a general cargo ship navigating between Dalian and Hamburg at May. Firstly, analysis of the energy equilibrium among the heat evaluated from fuel consumption rate and that distributed to different parts of the main engine system was carried out, an experimental unit employing the waste heat of the cylinder jacket water...
An attempt was made to convert Taixi anthracite into microporous activated carbons for use as SO2 adsorbents from flue gas. In this work the activated carbons (ACs) were produced by physical activation with CO2 and steam, respectively. Specifically, the effects of activation temperature and burn-off degree on the physico-chemical properties of two series were comparatively studied. The surface area...
Adsorption of 2, 4, 6-trichlorophenol onto octyl-modified ordered mesoporous silica material from aqueous solution has been investigated systematically using batch experiments in this study. Results indicate that 2, 4, 6-trichlorophenol adsorption is initially rapid and the adsorption process reaches a steady state after 1 min. The adsorption isotherms are well described by the Langmuir and the Freundlich...
The conditions for the preparation of activated carbon(AC) from corn cob(CC) treated with NaHCO3 using microwave radiation were optimized through response surface methodology (RSM) and central composite design (CCD).The effects of the radiation power, radiation time, and impregnation ratio were studied from the adsorption capacity on methylene blue dye(MB), and yield results.From the analysis of variance...
Study on lead-containing wastewater treatment by constructed wetland with fly ash and slag as main matrix was performed. The adsorption mechanism of fly ash and slag was analyzed, and the influence of their dosages, adsorption time, pH and temperature on the effect of lead-containing wastewater disposal was studied. The optimum conditions of absorbing Pb2+ by fly ash or slag were obtained. Packing...
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