List of Articles غلامحسین صفری

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  1 - Eutrophication in Water Resources: Definition, Types, Causes, Ecological Effects and Control Strategies
  Mohammad Safari Behzad Mohammadikhangahi Gholamhossein Safari
  One of the most common problems is water quality management of seas and reservoirs around the world. About 30-40% of lakes and reservoirs worldwide are affected by abnormally high nutrients. Eutrophic phenomena are caused by an excess of nutrients in an aquatic system, More

  One of the most common problems is water quality management of seas and reservoirs around the world. About 30-40% of lakes and reservoirs worldwide are affected by abnormally high nutrients. Eutrophic phenomena are caused by an excess of nutrients in an aquatic system, especially by nitrogen and phosphorus, especially in lakes, estuaries and slow streams. Due to the excessive consumption of fertilizers and the discharge of untreated urban and industrial wastewater into water sources, the extent of eutrophication processes has increased significantly since the middle of the last century. One of the obvious signs of eutrophication is dense algal blooms, which cause high turbidity in water systems, decrease of oxygen and increase of hypoxia conditions in the inner parts of water bodies due to the sediments. In addition, extensive development of blue-green cyanobacteria, reduction of biodiversity, formation of hydrogen sulfide, increase in fish mortality, unpleasant odor, and increased phytoplankton and other aquatic plants, are other effects of eutrophication on the ecosystem. The main nutrients of interest are nitrogen and phosphorus, both of which are essential for algal growth, but the role of phosphorus is more critical because many cyanobacteria can obtain the nitrogen, they need from atmospheric nitrogen through nitrogen fixation. Therefore, most of the eutrophication control measures are directed towards reducing phosphorus. The purpose of this study is to investigate the types, causes, stages and factors, and finally solutions to control, modify and prevent the process of eutrophication. Manuscript profile
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  2 - غلام حسین صفری1، احمد اصل هاشمی2 ، ،اقبال حسینی3
  Ahmad Asl hashemi GOLAM SAFARI
  Background and purpose: The life-giving effect of water on development and life on the one hand and the increase in population and the growth of agricultural, domestic and industrial uses and the lack of this vital substance in arid and semi-arid countries (such as Iran More

  Background and purpose: The life-giving effect of water on development and life on the one hand and the increase in population and the growth of agricultural, domestic and industrial uses and the lack of this vital substance in arid and semi-arid countries (such as Iran) on the other hand have caused the optimal use of Water should be used for various purposes such as drinking, health, agriculture, etc., and it is the concern of many policymakers and executives of the country's water sector, and the use of packaged water should be considered as a serious solution in the fair and healthy distribution of waterMaterials and methods: The research is descriptive and the quality parameters of mineral waters were measured using standard methods. The desired parameters include pH, electrical conductivity, TDS, nitrate, nitrite, fluoride, HPC, total coliform, and the bottled waters of Damavand, Vata, Kannibel, Silvana, Spota, Bidestan were measured.Findings: The results showed that most of the measured bottled waters were compatible with international standards in terms of quality parametersDiscussion and conclusion: Finally, the results showed that among the 8 types of bottled water tested, Spota drinking water has the best quality in terms of microbiology, and Cannibell in terms of chemical composition Manuscript profile
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  3 - The fate of pesticides in the environment and its biological purification
  Ahmad Asl hashemi safari Gholamhossein Leila Tarverdizad sahra Sakhaiefar
  Pesticides are substances in liquid, solid or gas form that are used to destroy pests. Some of these pests that are not liked by humans are insects, weeds and microbes that destroy plants. The negative effect of pesticides on the environment has been fully proven, and t More

  Pesticides are substances in liquid, solid or gas form that are used to destroy pests. Some of these pests that are not liked by humans are insects, weeds and microbes that destroy plants. The negative effect of pesticides on the environment has been fully proven, and the resistance of pesticides in the environment and their non-degradation have endangered the lives of many living organisms.Persistent organic pollutants (POPs) are chemical substances that remain in the environment for a relatively long time and upon entering the food chain, accumulate in living tissues and have adverse effects on human health and the environment. In general, these compounds are produced by human activities in different ways.The most famous persistent organic pollutants include chlorine, aldrin, crodan, dedet, dieldrin, dioxin, andrin, norans, heptachlor, hexachlorobenzene, Mirex, toxaphene, polychloride, biphenyls pesticides.So that by optimal and standard use and reducing the use of such chemical poisons (use of biological control methods) we can reduce the harmful effects on the environment. Manuscript profile
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  4 - Effects of heavy metals on children's health
  Ahmad Asl hashemi Fatemeh Yaghoobi roodposhti Gholamhossein Safari
  Children are more susceptible and vulnerable to environmental pollutants relative to adults. Due to their unique physiological and behavioral characteristics, children are easier to be exposed to environmental pollutants than the general population. Children are more se More

  Children are more susceptible and vulnerable to environmental pollutants relative to adults. Due to their unique physiological and behavioral characteristics, children are easier to be exposed to environmental pollutants than the general population. Children are more sensitive to chemical exposure as their organs are still developing and not yet mature and their immune systems and detoxification mechanisms are weaker than adults. The purpose of this study is to investigate the types of heavy metals (such as lead, mercury, cadmium and arsenic), their sources, possible routes of exposure and entry of heavy metals into children's bodies, the vulnerability of children to heavy metals and the adverse effects of heavy metals on children's health. Entry of heavy metals to the body occurs through inhalation of contaminated air, dermal absorption, consumption of contaminated food, and drinking of contaminated water. Exposure of children to heavy metals has adverse impacts on their health. The entry of heavy metals into children's bodies affects not only the physical development of children but also their nervous system, kidneys, and bones. Exposure to heavy metals during pregnancy and childhood leads to unfavorable brain development and increases the risk of neurodevelopmental disorders and so-called autism in children. Many of these metals lead to mental retardation and neurological disorders in children due to memory problems and low IQ. Because of the detrimental health effects of heavy metals on children, efforts should be made to curb their pollution or release to the environment through stringent laws and regulations. Manuscript profile
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  5 - Antibiotics in the environment: An overview of the sources, distribution, occurrence, effects, fate and risk assessment of antibiotics in the environment
  Gholamhossein Safari Ahmad Asl hashemi Nasim Mousakhani
  Antibiotics are one of the largest groups of medicinal compounds that are used in medicine and veterinary medicine. These compounds, despite having positive effects in preventing and treating diseases in humans and animals, also have adverse effects on the environment. More

  Antibiotics are one of the largest groups of medicinal compounds that are used in medicine and veterinary medicine. These compounds, despite having positive effects in preventing and treating diseases in humans and animals, also have adverse effects on the environment. Recently, the indiscriminate use of antibiotics and the subsequent entry of these compounds into the environment have led to an increase in concerns at the global level These compounds are not traditionally considered environmental pollutants, however, there are concerns about the occurrence of these compounds in aquatic systems, due to their biological effects and potential risks to the environment and health human.. Conventional water and wastewater treatment processes are not designed to remove small amounts of chemicals such as antibiotics. Therefore, the entry of these compounds into the environment from different sources leads to the pollution of plants, animals, and water and soil environments and also creates problems for public health. In addition, the presence of these medicinal compounds in the environment leads to the development of antibiotic-resistant pathogens that potentially threaten the functioning of the ecosystem and human health. Therefore, it is necessary to prevent the indiscriminate entry of these compounds into the environment and to provide effective and efficient wastewater treatment systems in the production sources of these compounds in order to eliminate and minimize their environmental risks. Manuscript profile
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  6 - Iron and Manganese in Drinking Water: A Review of Sources, Types, Standards, Health and Environmental Effects and Removal Methods
  Mohammad Safari Ahmad Asl hashemi Mehran Dolatkhah Gholamhossein Safari
  Iron and manganese are common natural minerals that are primarily found in groundwater, especially in deeper wells. Iron and manganese in drinking water, at permissible levels, do not pose a risk to human health. Instead, they both have secondary or recommended drinking More

  Iron and manganese are common natural minerals that are primarily found in groundwater, especially in deeper wells. Iron and manganese in drinking water, at permissible levels, do not pose a risk to human health. Instead, they both have secondary or recommended drinking water standards because they lead to aesthetic problems that may make the water undesirable and unpleasant for drinking and other domestic uses. The presence of both often causes stains on clothes, and the loss of color in plumbing installations, as well as creates an unpleasant taste and appearance in drinking water. The iron and manganese in the water cannot be seen with the naked eye, and the water appears practically clear and unpolluted, but if they are mixed with oxygen, they quickly lead to the creation of orange, brown, or black spots. The black stains are caused by the presence of manganese, and the brown and orange stains are caused by the presence of iron in the water. Removal methods depend on the concentration and form of iron and manganese in the water. Therefore, it is important to carefully test the water and determine the type and amount of iron and manganese before treatment. Considering the importance of these elements in drinking water, the purpose of this review article is to investigate the sources, standards, types, health and environmental effects, and methods of removing or reducing iron and manganese in drinking water. Manuscript profile
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  7 - Economic, social, and environmental aspects of using biofuels
  Mohammad Safari Gholamhossein Safari
  One of the most important issues that all the countries of the world are dealing with today is the issue of energy supply. Energy supply is one of the most basic prerequisites for social development and economic growth of many societies, especially developing countries, More

  One of the most important issues that all the countries of the world are dealing with today is the issue of energy supply. Energy supply is one of the most basic prerequisites for social development and economic growth of many societies, especially developing countries, and access to economically sustainable and environmentally friendly energy sources seems necessary in today''''s conditions. The decrease in fossil resource reserves and the increase in the price of oil and its products, as well as the need to pay attention to the reduction of environmental pollution caused by fossil fuels, have encouraged the countries of the world to use renewable and clean energies. Biofuels are one of the renewable resources that have attracted the attention of many European and American countries. Substitution of fossil fuels with biofuels has the potential to reduce some of the adverse environmental impacts of fossil fuel production and use, including emissions of conventional pollutants and greenhouse gases, depletion of finite resources, and dependence on unstable external suppliers. In addition to environmental benefits, the use of suitable biofuels can bring economic benefits such as reducing agricultural surplus reserves, reducing unemployment and dependence on imported oil, rural development, sustainable agriculture, etc. In the current study, after introducing and expressing the characteristics of two common biofuels, biodiesel and bioethanol, the general advantages and disadvantages of using biofuels, the economic, social and environmental considerations of using biofuels have been discussed. Manuscript profile