نتایج جستجو برای: heavy metal industry
تعداد نتایج: 491423 فیلتر نتایج به سال:
Impact of anthropogenic activities of man and his environment as a result of the growing rate of industrialisation in Tamilnadu, India is of a great concern. The objective of this research was to evaluate the physical properties and heavy metal concentration of soil in different industrial areas. Soil samples were collected from seven industries like welding, cement, steel, printing, textile, p...
introduction: biosorption of heavy metals can be an effective process for the removal of heavy metal ions from aqueous solutions. also, living lichens are known to accumulate metals across their surface. materials and methods: in this study, the biosorption of cadmium ions cd (ii) by the lichens acarospora strigata, lecanora muralis and caloplaca aurantia was investigated in aqueous solution in...
The effect of the glass industry on heavy metal characterization was assessed in the sludge/sediments of 5 discharge pits (sites) for effluents of functional glass factories and/or finishing workshops in the study area. A comprehensive profile of Zn, Mn, Co, Cd, Pb, Cr, Ni,Cu and As levels in industrial sludge was obtained. Correlation coefficients for metal pairs indicate varying levels (posit...
Ceramic Bonding, Inc. (CBI) was founded in 1987 to develop technology for reliable, inexpensive, on-site conversion of heavy metal hazardous wastes to safe, useful materials, such as fine aggregate for construction applications. CBI’s principal mission is to provide equipment that can be used by industry to eliminate the need for costly and environmentally unwise disposal of toxics at Class I d...
the present study was aimed at comparing the ability of three crop plants for phytoremediation of zinc (zn) and nickel (zn) from soils. a factorial (3×2×3) experiment based on rcbd was used to compare the treatments, and was repeated three times. the first factor was crop type (wheat, clover and rapeseed), the second factor was heavy metal types (zinc (zn) and nickel (ni)) and the third fac...
1 Overview Electricity generation from coal, natural gas, oil and nuclear sources involves the use of large volumes of process water. Two significant water-related issues confront the energy industry. The first involves biofouling of process surfaces and other power plant structures, leading to reduced energy efficiency and increased operational costs. A second challenge involves the accumulati...
The Katanga province is well known for its copper and cobalt reserves. During the early 2000s a boom of mining projects in Katanga brought again hope for better future to Congolese people. The paper aims to evaluate the impact of recent production recovery on economy and environment. We collected primary and secondary sources on copper industry for economic analysis. We use results of laborator...
The metal finishing industry is water intensive. Surveys of South African metal finishing companies indicate that water consumption is as high as 400 L/m of metal surface treated, whilst best available practice can achieve less than 10 L/m. The industry uses hazardous chemicals such as chrome VI, cadmium, nickel and cyanide. If consumption of these chemicals can be optimized, quantities of heav...
in recent years, heavy metal contamination of rice in different parts of the world has raised concerns about its safety and provoked crisis in it's global production and trade. in iran, also some studies have reported on the heavy metal contamination of native products. however, the concentration of heavy metals in rice grain could be influenced through preparation and cooking. this study aimed...
Background and purpose: Heavy metals can enter into animals’ body through consumption of contaminated food and water and leave toxic effects on different organs. Considering the potential public health risk posed by heavy metal contamination, information about concentration of heavy metals in animals can help in analyzing the suitability of ecosystems. Materials and methods: This study...
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