نتایج جستجو برای: natural adsorbent
تعداد نتایج: 488961 فیلتر نتایج به سال:
The aim of this study was to investigate the possibility of using rice bran as a natural adsorbent for the removal of citric acid from water and the effect of temperature, time, initial concentration of adsorbate and adsorbent concentration on the adsorption process. Fitting experimental data was performed using several adsorption models. Also, the thermodynamics and kinetics of adsorption have...
In this study, montmorillonite clay was used as the adsorbent for the removal of Aniline Blue dye, from aqueous solution by the batch adsorption technique under different conditions. The maximum removal of aniline blue dye for initial dye concentration 20 mg/L was more than 95% at optimum conditions (pH=4.5, contact time=30 min, and adsorbent dosage=2 g/L). The data of this study were fitted wi...
The adsorption equilibria of toluene from aqueous solutions on natural and modified diatomite were examined at different operation parameters such as pH, contact time, initial toluene concentration was evaluated and optimum experimental conditions were identified. The surface area and morphology of the nanoparticles were characterized by SEM, BET, XRD, FTIR and EDX analysis. It was found that i...
Storage of natural gas by adsorption or called Adsorbed Natural Gas (ANG) has the potential to replace Compressed Natural Gas (CNG) in mobile storage applications, such as in vehicles. ANG storage at moderate pressure around 3.5 to 4.2 MPa could be expected to reduce the problem of bulky storage within a confined space of high-pressure CNG storage used in vehicle. In adsorptive storage, the amo...
this study investigated the photocatalytic behaviors for the nanocomposite of tio2 p25 and semnan natural zeolite in the decomposition of tetracycline under visible light in an aqueous solution. the structural features of the composite were investigated by a series of complementary techniques that included x-ray diffractometer (xrd), fourier transform infrared spectroscopy (ftir), scanning elec...
background: surface water and groundwater pollution with various forms of nitrogen such as ammonium and nitrate ions is one of the main environmental risks. the major objectives of this study were to evaluate the capacity of natural zeolite (clinoptilolite) to remove no3- and nh4+ from polluted water under both batch and column conditions. methods: the laboratory batch and column experiments we...
Calcium alginate beads doped with hydrazine sulphate-treated red mud are investigated as adsorbent for extracting lead ions from water using batch methods of extraction. Different extraction conditions are optimised for maximum lead extraction. Substantial amount of lead is removed, and the adsorption ability is found to be 138.6 mg/g. Surface characterization using FTIR, EDX, and FESEM confirm...
The objective of this research was to seek a cost effective solution to prepare adsorbents for nitrogen oxide from surplus sludge. Leaf litter and powder coal ash were used as cheap and easily available additives. An adsorbent for nitrogen oxide was prepared by pyrolysis of dried sludge mixed with zinc chloride. Under optimum pyrolysis conditions of 375°C for 90 min and a zinc chloride content ...
Batch sorption experiments were carried out using jackfruit seed powder (JSP), for the removal of Methylene Blue (MB) from dyeing synthetic effluent waste water. Effects of process parameters pH, adsorbent mass, adsorbate concentration, contact time and temperature were studied. The adsorption process attains equilibrium within 60 minutes. The amount of MB adsorbed per unit mass of the adsorben...
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