Journal ArticleDOI
Behavior of some chloride, carbonate, phosphate, sulphate and borate additive salt–NaCl aqueous solution systems in the absence and presence of NaF
M.S. Masoud,Ghada F. El-Said +1 more
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In this paper, the behavior of the contact of some seawater's constitutes in both untreated discharged waters that fall along the coastal zone, and seawater in absence and presence of high fluoride concentrations.Abstract:
The objective of this investigation focuses to the behavior of the contact of some seawater’s constitutes in both untreated discharged waters that fall along the coastal zone, and seawater in absence and presence of high fluoride concentrations. Fluoride is classified as one of the hazard contaminants for marine ecosystem when its concentration exceeds the range of 1.2–1.5 mg/l for unpolluted seawaters. The pH change in twelve aqueous systems containing additive salts (CaCl2, MgCl2, KCl, NH4Cl, NaHCO3, Na3PO4, Na2SO4 and B(OH)3; known by their interfering properties among fluoride ion in seawater) and sodium chloride was followed in absence and in presence of sodium fluoride. Different concentrations of additive salts (similar and higher to seawater composition) were used to represent the behavior of these constituents in seawater and in the discharged water when they contact with the high fluoride concentration. Ca(OH)+, CaF+, Mg(OH)+, Mg(OH)2, MgF+, K(H2O)4 +, NH4(H2O)n +, NH4F, Na2CO3, HCO3 –, NaSO4 –,...read more
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Adsorption isotherms and kinetic studies for the defluoridation from aqueous solution using eco-friendly raw marine green algae, Ulva lactuca.
TL;DR: In this paper, the authors investigated the defluoridation from aquatic medium by raw marine algae, Ulva lactuca, and determined the element components and adsorbent's properties.
Journal ArticleDOI
Defluoridation of commercial and analar sodium fluoride solutions without using additives by batch electrocoagulation-flotation technique
TL;DR: In this article, the effect of different variables on the defluoridation process; the initial fluoride solution concentration, speed of agitation, number of electrodes and distances between them, volume of solution, time of experiment, presence of additives and coexisting anions were studied.
Journal ArticleDOI
Bioaccumulation of Key Metals and Other Contaminants by Seaweeds from the Egyptian Mediterranean Sea Coast in Relation to Human Health Risk
TL;DR: In this paper, the authors examined the bioaccumulation of key metals and other contaminants (SO4, F, Na, K, Ca, Mg, P, Si, Fe, Mn, Zn, Ni, Co, Cu, and Cd) by seaweeds from the Egyptian Mediterranean Sea coast and their risk to human health.
Journal ArticleDOI
A novel high efficient Mg–Ce–La adsorbent for fluoride removal: kinetics, thermodynamics and reusability
TL;DR: In this paper, a co-precipitation method was used for the removal of fluoride using Mg-Ce-La adsorbent, which showed high adsorption performance over a wide pH range from 3.0 to 8.0 for fluoride removal.
Journal ArticleDOI
Evaluating the application of Microbacterium sp. strain BR1 for the removal of sulfamethoxazole in full-scale membrane bioreactors.
TL;DR: The survival of Microbacterium sp.
References
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BookDOI
Methods of seawater analysis
TL;DR: The Automatic Determination of Dissolved Organic Carbon (DOC) by Wet Chemical Oxidation is described in this paper, along with the results of HPLC analysis of photosynthetic pigments.
Book
Environmental Chemistry: A Global Perspective
Gary W. vanLoon,Stephen J. Duffy +1 more
TL;DR: In this article, the Earth's ATMOSPHERE is represented as a set of three levels: the hydrosphere, the stratospheric ozone layer, and the oceans.
Journal ArticleDOI
Removal of fluoride from drinking water by adsorption onto alum-impregnated activated alumina
TL;DR: The ability of the alum-impregnated activated alumina (AIAA) for removal of fluoride from water through adsorption has been investigated in this article, where all the experiments are carried out by batch mode.