نحن نلتزم بمبدأ توفير حل تصميم مخصص لكل عميل. بالاعتماد على المعرفة المهنية لمديري المبيعات لدينا وخدماتنا طوال دورة حياة المنتجات ، نساعد عملائنا على التغلب على الصعوبات التي يواجهونها في شراء المعدات ، ومحاسبة تكاليف التشغيل ، وإدارة العمليات ، والحصول على خدمات ما بعد البيع ، وبالتالي تحسين جني الأرباح. القدرة وتحقيق التنمية المستدامة للأعمال.
The application of phosphogypsum increased the m CaCl2 extractable fluoride in the surface 5 cm from 26 to 43 µM. In contrast, fluoride concentrations were decreased to between and µM in the lime, gypsum plus lime and phosphogypsum plus lime treatments. Gypsum and phosphogypsum decreased the concentration of Al3+ in solution and on the
inquiry
The fluoride level in drinking water is an important parameter and has to be controlled in order to prevent dental and skeletal fluorosis. The objective of this study is to assess fluoride content and other water quality parameters in the samples taken from open wells, tube wells, and karezes of Mastung, Mangochar, and Pringabad areas of Balochistan province.
inquiry Hazard of NORM from phosphorite of Pakistan. Muhammad Influence of Mount Sinabung Volcanic Ash and Phoshate Fertilizers on Natural Radionuclide Content in Agricultural Soils. By Editor CSRL. Assessment of radiological hazard of NORM in
inquiry Organophosphate poisoning is poisoning due to organophosphates (OPs). Organophosphates are used as insecticides, medications, and nerve agents. Symptoms include increased saliva and tear production, diarrhea, vomiting, small pupils, sweating, muscle tremors, and confusion. While onset of symptoms is often within minutes to hours, some symptoms can take weeks to appear.
inquiry This study focuses on the determination of heavy metals and fluoride concentrations in the Syrian phosphate industry and in the vicinity of the phosphogypsum (PG) piles. Four sampling campaigns were carried out, in which 86 soil, 139 plant, 30 air particulate, 16 water, 12 PG, 6 phosphate ore (raw and treated) and 3 fertilizer samples were collected. Differential pulse
inquiry · Not only fluoride but arsenic content is also harmful for public health. According to noted Hyderabad-based water technologist Dr Ahsan Siddiqui, consumption of
inquiry · A WASTEWATER reservoir atop a phosphogypsum stack just 40 miles south of Tampa, Florida, threatens to inundate nearby areas with a deluge of contaminated water. A state of emergency has been
inquiry · The optimal fluoride in drinking water in Pakistan using this modified equation was determined to be ppm. Results: Observation of the correlation showed that a fluoride concentration of ppm in drinking water was associated with maximum reduction in dental caries and a 10% prevalence of fluorosis.
inquiry PDF | An experiment was conducted during 2022–07 to study the fluoride enrichment in soil as well as crops after phosphogypsum application in
inquiry Phosphogypsum (PG) is the main by-product of the phosphate fertilisers´ production process. Since there are no substitutes for phosphorus in agriculture, PG is manufactured in humungous amounts all over the planet, but only 15 % of it is recycled. The rest part is stored in big and useless stockpiles, which, on the other hand, damage the environment. The only solution to
inquiry Phosphogypsum (PG) is an acidic by-product created during phosphate fertilizer production (Rutherford et al 1994). In open or operational PG stacks, airborne fluorides are emitted from phosphogypsum process water pond surface evaporation or particulate fluoride that can be transported as fluoride containing dust. This two year research project aimed to improve the
inquiry This study focuses on the determination of heavy metals and fluoride concentrations in the Syrian phosphate industry and in the vicinity of the phosphogypsum (PG) piles. Four sampling campaigns were carried out, in which 86 soil, 139 plant, 30 air particulate, 16 water, 12 PG, 6 phosphate ore (raw and treated) and 3 fertilizer samples were collected.
inquiry · Hence it is the best and the most effective adsorbent sample in the removal of fluoride content ininvestigated the possibility of fluoride removal using recycled phosphogypsum waste which was prepare in a form of HAP nanoparticles via microwave irradiation technology. Batch fluoride adsorption experiments were conduced to evaluated
inquiry · GB/T 23456-2022 (GBT 23456-2022) This standard was drafted in accordance with the rules given in GB/T -2022. This standard replaces GB/T 23456-2022 "phosphogypsum", compared with GB/T 23456-2022, the main technical changes are as follows. This standard is proposed by China Federation of Building Materials.
inquiry Groundwater in confined aquifers is the preferred water resource worldwide, and its hydrochemical quality is the premise for sustainable development. A systematic hydrogeochemical research was conducted to get insight into the hydrochemical characteristics, genesis, and potential health threats of confined groundwater, based on analytical data of 45
inquiry phosphorous content of 16-21 percent as phosphorous pentoxide (P2O5). If phosphoric acid is used to acidulate the phosphate rock, then triple phosphate (TSP) is the result. TSP has a phosphorous content of 43-48 percent as P2O5. SSP production involves mixing the sulfuric acid and the rock in a reactor followed by discharging the reaction mixture on to a slow moving
inquiry Fluoride is one of the anionic contaminants which is found in excess in surface or groundwater because of geochemical reactions or anthropogenic activities such as the disposal of industrial wastewaters. Among various methods used for defluoridation of water such as coagulation, precipitation, membrane processes, electrolytic treatment, ion-exchange, the adsorption
inquiry · Vegetation and overburden cover on phosphogypsum: Effects on radon emission, runoff water quality, and plant uptake of fluoride and radium
inquiry phosphorous content of 16-21 percent as phosphorous pentoxide (P2O5). If phosphoricmixture is filtered to remove phosphogypsum, which is discharged to settling ponds or waste of groundwater by fluoride. • Where contamination of groundwater is a concern, a management and monitoring plan
inquiry 23/05/2022 · Recycling of Oily Sludge as a Roadbed Material Utilizing Phosphogypsum-Based Cementitious Materials. Wei Xiao,1 Xiao Yao,1 and Fuyang Zhang1. 1College of Materials Science and Engineering, Nanjing Tech University, Nanjing 210009, China. Academic Editor: Arnaud Perrot. Received 15 Feb 2022.
inquiry Phosphogypsum contains radium-226, which decays to radon gas. According to a report by the United Nations Scientific Commission for Emissions due to Atomic Radiation, the radium concentration is as high as 46 picocurie per gramme (pCi g –1 ) in the phosphate rock from Morocco, while that of India has only 4 pCi g –1 (a picocurie is one-trillionth of a curie, a unit
inquiry Phosphogypsum (PG) is a by-product of phosphoric acid production and according to the Waste Management Strategy of the Republic of Croatia for 2022 -
inquiry The level of radionuclides is an important index for the preparation of building materials from industrial solid waste. In order to investigate the radiological hazard of five kinds of typical general industrial solid wastes in Guizhou, China, including fly ash (FA), red mud (RM), phosphorus slag (PS), phosphogypsum (PG), and electrolytic manganese residue (EMR),
inquiry The phosphogypsum samples were mixed with ZnO and anhydrous Na2CO3 and fluxes thereof prepared at 900oC. The cooled melt was dissolved in deionised water and the fluoride content of
inquiry High metals content were verified with a remarkable enrichment in the downwind sites. The enrichment factor analysis showed high values for P, Ca, V, Ni, Cu, Zn, Cd, Pb, and Cr. This enrichment resulted from many anthropogenic sources in the area, from which dry milling of phosphate rocks, chemical reactions used for fertilizer production, and vehicles activities were
inquiry Aim: The assessment of fluoride levels in domestic water supplies in Pakistan. Method: Water samples were collected from sources supplying the majority of the population: taps in places where piped water supply was available, tube-wells, boreholes and wells in rural areas, and stream water where appropriate. Results: Analysis of 987 water supplies showed that they are
inquiry Under the China-Pakistan Economic Corridor (CPEC) and PM's Naya Pakistan Housing Program the construction activity in Pakistan has surged and Agha Steel Industries Limited (ASI) aims to set up a Rs7 billion ($42 million) steel manufacturing plant at Port Qasim to meet the growing #WATCH: #Steel consumption in #Pakistan will increase manifolds as
inquiry THE role of mullite, the conditions and kinetics of its formation are among the main problems of ceramic theory. The equilibrium conditions of the alumina–silica system
inquiry This book presents an up-to-the-minute overview of arsenic and fluoride pollution of soil and groundwater in Pakistan. It includes the author's doctoral dissertation on Lahore as a case study and describes the mechanism of pollution on the basis of the findings in that area. The book highlights the concrete situation in Pakistan – including the severity of the problem, its health
inquiry The effect of phosphatic and fluoride impurities present in waste phosphogypsum on the setting time, strength development and morphology of selenite gypsum plaster have been studied. The results showed that soluble phosphates retard the setting and strength development of plaster while soluble fluorides decrease the setting time and reduce the density and strength.
inquiry 20/02/2022 · Low content of (137)Cs was determined in only two phosphate fertilizer samples (F2 and F3; mean /kg) and in most of sediment samples (with range /kg). The radium equivalent, as a radiation hazard index, was ranged from 284 to 1316, to 432 and 47 to 70Bq/kg for phosphate fertilizer, other types of fertilizer and sediment
inquiry · Phosphogypsum is primarily CaSO 4 ·2H 2 O, but also contains impurities of environmental concern such as residual acids, fluoride, heavy metals and naturally-occurring radionuclides. Impurity composition within phosphogypsum can vary greatly depending on the source of phosphate rock used in phosphoric acid production. This study was undertaken to
inquiry · The residual moisture content and composition, solvent polarity, surface tension, and viscosity significantly impact agglomeration. The drying process can also impact on final drug product leading to non-uniform powder flowability, inconsistent drug product dissolution profile, and bioavailability. The aim of this work was to quantify the correlation between the mass of
inquiry Phosphogypsum (PG) is a by-product from phosphorus fertilizer production that is stored in large piles called stacks. Stacks are formed as PG particles settle to the bottom of large holding ponds and excess water is returned to the production facility resulting in piles of dry PG. PG is comprised of gypsum with low concentrations of fluoride, trace elements and naturally occurring
inquiry The content of the Open Access version may differ from that of the licensed fluoride removal from drinking water by magnesia-amended activated alumina granules Author / Creator: Maliyekkal, S. M. / Shukla, S. / Philip, L. / Nambi, I. M. Published in: CHEMICAL ENGINEERING JOURNAL -LAUSANNE- ; 140 ; 1-3 ; 183-192 Publisher: Elsevier
inquiry Skip to main content; University of Arizona Home. Home; Profiles; Research Units; Projects; Research output; Activities; Prizes; Search by expertise, name or affiliation . Assessment of fluoride contamination in groundwater of district Mardan in Pakistan. Zia Ur Rahman, Bushra Khan, Hizbullah Khan, Mark L. Brusseau, Iqbal Ahmad. Research output: Contribution to
inquiry Phosphogypsum, like natural gypsum, is calcium sulfate, but it contains a small amount of radioactivity due to the radium that naturally occurs in Florida phosphate rock. Because of this trace amount of radioactivity, a 1992 Environmental Protection Agency (EPA) rule bans most uses of phosphogypsum.
inquiry The concentration of 32 elements was determined in phosphate rock samples from the Hazara phosphate deposits of Pakistan using instrumental neutron activation analysis (INAAheavy metals and fluoride contents in the materials of Syrian phosphate industry and in the vicinity of phosphogypsum piles. L. Al Attar, M. AL-Oudat, K. Shamali, B
inquiry All content in this area was uploaded by Yassine Ennaciri on Dec 30, 2022 Content may be subject to copyright. Phosphogypsum Conversion into Calcium Fluoride and Sodium Sulfate
inquiry In Pakistan, the F content in groundwater sources varies considerably from the World Health Organization (WHO) and national standard value of
inquiry