List of Articles adsorbent

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  1 - Evaluation of natural adsorbents in water and wastewater treatment
  Mohadeseh Tavakoli
  10.29252/.5.7.39
  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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  2 - Removal of petroleum from contaminated water by affordable adsorbents
  Zahra Zamiraei
  Petroleum pollution has an important impact on marine plants and animals, coral islands, fishing, beaches, human health and tourism industry. Therefore, it is important to recycle or prevent leakage and to remove them from contaminated water. There are various ways to r More

  Petroleum pollution has an important impact on marine plants and animals, coral islands, fishing, beaches, human health and tourism industry. Therefore, it is important to recycle or prevent leakage and to remove them from contaminated water. There are various ways to remove and recycle oil; including physical, mechanical, biological and photochemical methods, filtration and the most widely used way is absorption methods. The choice of an economically suitable hydrophobic absorber should be easy to handle, not expensive, and not be classified as hazardous. The adsorbent material can be organic or inorganic. Organic materials usually include plants, animals, or other high-carbon compounds (such as food waste, rice husk, macroalgae, algae, creatine, etc.). It is also possible to use organic compounds produced in industries such as petroleum and fertilizer industries. Inorganic compounds used as adsorbents are usually substances such as: soil, clay, mud, zeolite, minerals, metal oxides and hydroxides. Manuscript profile
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  3 - Polymer Networks as Hierarchical Porous Carbon Materials: Synthesize, Properties and Applications
  ziba shirini kordabadi Fatemeh Rafiemanzelat
  Porous materials have different types of pores in the micro, meso or nano range, each of which plays a special role in porous materials application. Among these materials, porous carbon materials have a special share due to their unique properties such as: mechanical, c More

  Porous materials have different types of pores in the micro, meso or nano range, each of which plays a special role in porous materials application. Among these materials, porous carbon materials have a special share due to their unique properties such as: mechanical, chemical and thermal stability and their reasonable price. There are two main methods for synthesizing porous carbon materials: 1) template method and 2) pyrolysis/activation method. The template method is basically time consuming and tedious due to the use of the template and removal of template. Thus the method of pyrolysis/activation is widely used to prepare porous carbon materials from porous polymer precursers or waste and biomass materials in the presence of the physical and chemical active agents. Replacement of heteroatoms including: N, O, B, S and P in carbon materials leads to increased efficiency and development of their new applications; For example, the use of porous N-doped carbon materials as electrodes in superconducting cells increases the efficiency of energy storage and in the field of adsorbents materials increases the efficiency of CO2 uptake. Due to their unique properties, especially high surface area, low weight and high adsorption capacity, porous carbon materials are used in hydrogen storage, contaminants removal fron air air water, electrodes and as catalyst support. Manuscript profile
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  4 - Application of electrospun nanofibers for gaseous pollutants adsorption
  hanieh shaki
  Carbon dioxide is the most important greenhouse gas that is released in large quantities into the atmosphere. Excess carbon dioxide in the atmosphere is a problem for earth and increase the temperature and creates problems that affect human existence, such as severe tor More

  Carbon dioxide is the most important greenhouse gas that is released in large quantities into the atmosphere. Excess carbon dioxide in the atmosphere is a problem for earth and increase the temperature and creates problems that affect human existence, such as severe tornadoes, storms, floods, droughts and acid rain. The largest source of outdoor CO2 is fossil fuel combustion, which are the main source of energy used to meet human energy demand now and in the near future. In recent years, nanofiber membranes have been highly regarded as pollutant adsorbents compared to conventional adsorbents, they have properties such as porous structure, high specific surface area, high penetration flux and selectivity, low pressure drop, high flexibility and targeted adsorption. So, electrospun nanofiber membranes have excellent potential for adsorption and separation of carbon dioxide from the air. In addition to the extremely high surface to volume ratio, modified electrospun nanofibers have different functional groups that improve their performance. Therefore, electrospun nanofiber membranes have excellent potential for adsorption and separation of carbon dioxide from the air Manuscript profile
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  5 - A review of the sorbents based on covalent organic frameworks containing hybrids for extraction methods
  Mohammad Javad Aghajani Milad Ghani Jahan Bakhsh Raoof
  Covalent organic frameworks have been used as a group of porous organic frameworks due to their remarkable intrinsic properties, such as high specific surface area and variable pore size as well as high stability. Also, they are flexible that by producing functional cov More

  Covalent organic frameworks have been used as a group of porous organic frameworks due to their remarkable intrinsic properties, such as high specific surface area and variable pore size as well as high stability. Also, they are flexible that by producing functional covalent organic frameworks or polystructures based on them, major changes in their physical and chemical properties can be made. In this article, several important groups of covalent organic frameworks are examined in terms of their design and manufacturing methods. Also, synergism of covalent organic frameworks with other materials, such as different types of magnetic nanoparticles, metal/metal oxide, silica, carbon nanomaterials, polymers, polyoxometalates and metal-organic frameworks are studied. Finally, recent applications of covalent organic frameworks as efficient adsorbents in sample preparation methods such as solid phase extraction, diffusion solid phase extraction, magnetic solid phase extraction and fibrous solid phase microextraction with emphasis on important factors that lead to increased efficiency It will be extracted and will be checked. Investigations have shown that hybrid formation of organic-covalent frameworks and other compounds, including polymers, can be effective in improving the performance of these compounds. It is important to note that an essential step during the synthesis of covalent organic frameworks is their design concept. The purpose of design is the specific orientation of covalent bonds between the functional groups of constituents (node ​​and linker), types of bonds and types of topologies with pore sizes that require engineering. In addition, the challenges in these approaches will also be discussed. Manuscript profile