• The practical benefits associated with a mechanistic, equilibrium chemistry based model include: a) improved control of ferric dosage depending on pH conditions (chemical savings), b) better estimates of chemical sludge produced, and c) by modeling the competition between iron phosphate and iron in other forms, better understanding of the iron overdose required. (ingentaconnect.com)
  • In high school chemistry, you may have watched a mixture of dissolved chemicals in a test tube produce a dramatically colored precipitate . (usra.edu)
  • Nuclear chemistry is a sub-discipline of chemistry that involves the chemical reactions of unstable and radioactive elements where both electronic and nuclear changes can occur. (wikipedia.org)
  • Precipitation collectors were installed at 14 locations on the Pajarito Plateau and surrounding areas to study variations in chemistry, stable isotopes and tritium for the years 1990 to 1993. (unt.edu)
  • It begins with a basic coverage of chemistry and biochemistry, environmental chemical processes, and toxicology. (routledge.com)
  • In this paper, a parameterization scheme for aerosol size distribution in initial emission, which took into account the measured mass and number size distributions of aerosols, was developed in the GRAPES-CUACE [Global/Regional Assimilation and PrEdiction System-China Meteorological Administration (CMA) Unified Atmospheric Chemistry Environment model]-an online chemical weather forecast system that contains microphysical processes and emission, transport, and chemical conversion of sectional multi-component aerosols. (springer.com)
  • That such sedimentary deposits were extensive enough to change the chemical signature of intracrustal melts suggests they may have been a suitable niche for (pre)biotic chemistry as early as 4.1 Ga. (pnas.org)
  • The book fills a gap in the literature through its discussion of geochemical modeling, which simulates the chemical and physical processes affecting the distribution of chemical species in liquid, gas, and solid phases. (routledge.com)
  • Formaldehyde is a basic chemical raw material widely used in plastics, chemical, leather, resin, and other production processes. (hindawi.com)
  • Separation processes worth investigating might include chemical precipitation. (iea-shc.org)
  • A quantitative introduction to Solid Earth system science, focusing on the underlying physical and chemical processes and their geological and geophysical expression. (princeton.edu)
  • It focuses on aqueous solutions, but also addresses non-aqueous solutions, covering acid-base, complex, precipitation and redox equilibria. (springer.com)
  • An example of a precipitation reaction: Aqueous silver nitrate (AgNO 3 ) is added to a solution containing potassium chloride (KCl), the precipitation of a white solid, silver chloride (AgCl), is observed. (wikipedia.org)
  • Likewise, the suspending medium remained stable for up to 72 h when precipitation was induced within the aqueous interiors of the liposomes by encapsulating pH 7.4-buffered 50 mM PO4 solutions in the interior spaces and making the enclosing membranes permeable to external solution Ca2+ ions with the ionophore X-537A. (biomedsearch.com)
  • 2016). 'Synthesis and assessment of antibacterial effects of CdSe:Ag nanoparticles produced by chemical precipitation method', International Journal of Bio-Inorganic Hybrid Nanomaterials , 5(2), pp. 147-152. (ac.ir)
  • Macroscopic mass balance approach was used for the particle, fluid and chemical species. (edu.ng)
  • Differences in physico-chemical properties including morphology, particle-size, and crystallinity were investigated following alteration of critical processing parameters. (duhnnae.com)
  • In theory, the precipitation process has two steps, nucleation followed by particle growth. (encyclopedia.com)
  • Abstract Hydroxyapatite nanoscale particles nHA were prepared by wet chemical precipitation using four different synthesis methods. (duhnnae.com)
  • Structural, functional and nutritional properties of protein recovered from brown seaweed, S. latissima with alkaline solubilization/isoelectric precipitation as a function of different post-harvest stabilization methods were studied. (usda.gov)
  • This study demonstrated that relatively small adjustments to processing conditions of different wet chemical preparation methods significantly affect the morphological and chemical characteristics of nHA. (duhnnae.com)
  • One of the earliest satisfactory methods of clarification, by chemical precipitation. (scribd.com)
  • The researchers selected 43 ant species from the Crematogaster genus from five continents and examined them concerning their relatedness and their chemical profiles. (uni-mainz.de)
  • In another cooperative study including 38 Camponotus species and 42 Crematogaster species from different climatic zones ranging from temperate to tropical, the German and US-American biologists demonstrated that climate also exerts selection pressures on the chemical fingerprint. (uni-mainz.de)
  • The bulk of the sewage is disposed of by chemical precipitation, the remainder being treated by open septic tanks and continuous filters, but it is intended to treat all the sewage by the latter process. (ebooksread.com)
  • Chemical Weathering/ Hydrolysis/ Acid Precip. (prezi.com)
  • The iron based bullion is also acid leached but follows a different chemical treatment route, given the different solubilities of the five pgms that it contains. (matthey.com)
  • 1996). deposition in Asia, isolated surveys of acidity level and chemical Nationwide surveys of acid rain began in the 1980s. (scribd.com)
  • Chemical precipitation of heavy metals from acid mine drainage, - Matlock, Howerton, et al. (psu.edu)
  • ACTIVE TREATMENT: Generally active treatment involves many chemicals as neutralising agent to the source of acid mine drainage or directly addition to the receiving stream that has been polluted. (psu.edu)
  • Nexstar Media Group) - The recall of a widely-prescribed blood pressure drug losartan is being expanded again by the Food and Drug Administration due to contamination by cancer-linked chemical. (wtnh.com)