List of Articles Adsorption

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  1 - Investigation of the ability for removal of methylene blue cationic dye in aqueous samples using synthetic polymers
  Marzieh Hasanzadeh Fariba Ostovar
  10.29252/.2.3.17
  20.1001.1.26763060.1396.2.3.3.2
  In this research, the ability for removal of methylene blue cationic dye using Electro active polymers based on polypyrrole (PPy) and poly (3-methylthiophene) (P3MTh) in a batch system were studied. Sawdust (SD) was made from wood, after patching, as a holder for coatin More

  In this research, the ability for removal of methylene blue cationic dye using Electro active polymers based on polypyrrole (PPy) and poly (3-methylthiophene) (P3MTh) in a batch system were studied. Sawdust (SD) was made from wood, after patching, as a holder for coating polymers and Sodium Dodecyl Sulfate Anionic Surfactant (SDS) was used to modify the surface of the sawdust. The effects of some important parameters such as pH, initial concentration of dye and contact time were investigated. To evaluate the obtained data, adsorption isotherm curves (Langmuir and Freundlich) were used. The adsorption efficiency for methylene blue was maximized at alkaline pH. Adsorption capacity increased with increasing initial concentration and contact time. In all cases, the adsorption process complies with Langmuir isotherm and represents the homogeneous and single-layer process. Also, the adsorption capacity obtained in SD/PPy, SD /PPy / SDS and SD / P3MTh polymers were 59/52, 400 and 1000 mg/g, respectively. Based on the studies and the results obtained in this study, it was found that these polymer materials can effectively be used in waste dyes, such as textile industry, which they have the great environmental significance. Manuscript profile
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  2 - Evaluation of natural adsorbents in water and wastewater treatment
  Mohadeseh Tavakoli
  10.29252/.5.7.39
  20.1001.1.26763060.1399.5.7.4.2
  With increasing industrial activities and discharging untreated wastewater which contains various environmental pollutants to aquatic environments, problems such as reducing the penetration of light, anaerobic conditions and complications such as allergies and cancer fo More

  With increasing industrial activities and discharging untreated wastewater which contains various environmental pollutants to aquatic environments, problems such as reducing the penetration of light, anaerobic conditions and complications such as allergies and cancer for humans and other living organisms will occur. Surface absorption is one of the most effective and efficient methods for the removal of environmental pollutants and among the common methods for treatment of wastewater, applying natural adsorbents are more efficient than the other methods and is more economic. Since there are many natural adsorbents in nature, they are very inexpensive, they are even free in some cases; adsorption of contaminants by these materials can be a suitable way to remove the toxic substances of contaminated water and industrial wastewater. In this paper, we study some of bioactive adsorbents in order to remove contamination from industrial wastewater. Manuscript profile
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  3 - Removal of lead with metallic organic nanostructures of iron and benzene tricarboxylate from aqueous solution
  reza alizadeh
  Heavy metals are not chemically degraded, in order to prevent the entry and accumulation of this toxic pollutant along with factory effluents into the environment, so far, different methods have been used, but finding new methods with more efficiency in this area is nec More

  Heavy metals are not chemically degraded, in order to prevent the entry and accumulation of this toxic pollutant along with factory effluents into the environment, so far, different methods have been used, but finding new methods with more efficiency in this area is necessary. In this research, a new class of compounds called organic metallic materials has been used to remove industrial effluent lead. These organic metallic materials contain iron and benzene tricarboxylate. To identify the characteristics of these materials, electron microscope images and Nitrogen adsorption and desorption isotherms has been used. To determine the optimal conditions for using these materials for lead removal from the effluent, the effect of parameters: time (10-120 min), the amount of adsorbent (0.2-0.5 mg/L), pH (3.5 -12.5) and temperature (10-75 ° C) were evaluated. The results show that the composition of MIL-100 (Fe) has a better performance than the other materials in this study and complete removal of lead was achieved with an initial concentration of 10 mg/l and an adsorbent dose of 0.25 mg / l, at a temperature of 50 ° C, pH =4.3 and contact time of 120 min. Other properties of this material in removal of industrial effluent lead such as magnetic properties, reusability in five consecutive periods, large surface area, low cost, high efficiency and easy to use, make it an ideal option for large-scale use. Manuscript profile