Sample Dissolution Articles

  • Phthalate degradation by glow discharge plasma enhanced with pyrite in aqueous solution

    In order to prevent health risk from potential exposures to phthalates, a glow discharge plasma (GDP) process was applied for phthalate degradation in aqueous solution. The results revealed that the phthalate derivatives 4-hydroxyphthalic acid, 4-methylphthalic acid and 4-tert-butylphthalic anhydride could be degraded efficiently in GDP process (498 V, 0.2 A) with high removal efficiencies of ...


    By IWA Publishing

  • Role of low molecular weight organic acids on pyrite dissolution in aqueous systems: implications for catalytic chromium (VI) treatment

    A systematic study combining batch experiments with spectroscopic analyses was carried out to better understand the effects of various organic acids on pyrite dissolution and subsequent Cr(VI) removal in aqueous systems. Our results suggest that organic acids had no effect on total Fe dissolution from pyrite relative to systems containing no acid. However, while nearly 100% of total Fe ...


    By IWA Publishing

  • Interactions of metal‐based engineered nanoparticles with aquatic higher plants: A review of the state of current knowledge

    The rising potential for the release of engineered nanoparticles (ENPs) into aquatic environments requires evaluation of risks in order to protect ecological health. The present review examined knowledge pertaining the interactions of metal‐based ENPs with aquatic higher plants, identified information gaps and raised considerations for future research to advance knowledge on the subject. The ...


    By John Wiley & Sons, Ltd.

  • Stabilized chitosan/Fe0-nanoparticle beads to remove heavy metals from polluted sediments

    Sediment contamination by heavy metals has become a widespread problem that can affect the normal behaviors of rivers and lakes. After chitosan/Fe0-nanoparticles (CS-NZVI) beads were cross-linked with glutaraldehyde (GLA), their mechanical strength, stability and separation efficiency from the sediment were obviously improved. Moreover, the average aperture size of GLA-CS-NZVI beads was 20.6 ...


    By IWA Publishing

  • Oxidative decomposition properties of cationic exchange resins producing SO42− in power plants

    The sulphate content of a system increases when strong-acid cationic exchange resins leak into a system or when sulphonic acid groups on the resin organic chain detach. To solve this problem, a dynamic cycle method was used in dissolution experiments of several resins under H2O2 or residual chlorine conditions. Results show that after performing dynamic cycle experiments for 120 hours ...


    By IWA Publishing

  • Ecotoxicity of bare and coated silver nanoparticles in the aquatic midge, Chironomus riparius

    While sediment is generally considered to be the major sink for nanomaterials in aquatic environments, few studies have addressed the ecotoxicity of nanomaterials in the presence of sediment. In this study, the ecotoxicity of silver nanoparticles (AgNPs) with a range of organic coatings was examined in a freshwater sediment dwelling organism, Chironomus riparius, using acute and chronic ...


    By John Wiley & Sons, Ltd.

  • Treatment of eutrophic lake water and phosphorus recovery by reusing alum sludge and/or wood

    Treatment of eutrophic lake water was investigated, when alum sludge and/or wood were used as the media for laboratory-scale filtration. Process 1 consisted of Column 1 with wood and Column 2 with alum sludge in series, and Process 2 of Column 3 with alum sludge. The filtration velocity was 0.45 and 0.91 m/d for 49 days each. Both processes removed suspended solids and total phosphorus well ...


    By IWA Publishing

  • Humic substances alleviate the aquatic toxicity of PVP‐coated silver nanoparticles to organisms of different trophic levels

    It was investigated how humic substances (HS) modify the aquatic toxicity of silver nanoparticles (AgNPs) as these particles agglomerate in water and interact with HS. An alga species (Raphidocelis subcapitata), a cladoceran species (Chydorus sphaericus) and a freshwater fish larva (Danio rerio), representing organisms of different trophic levels, were exposed to colloids of the ...


    By John Wiley & Sons, Ltd.

  • Quantitative analysis of Powdered solids case study

    Introduction Infrared quantitative analyses are an everyday requirement in the analytical laboratory. While liquid solutions are commonly analyzed, mixtures of powdered components also exist and often require quantitative analysis without dissolution into a solvent. This paper outlines the development of quantitative analysis methods for two powdered mixtures. The traditional ...


    By Specac Limited

  • Can Ants Help Slow Climate Change?

    Ants are mighty little creatures. They inhabit every continent on Earth except Antarctica. They can lift 10 to 50 times their body weight. And now, one new study suggests, they may have the potential to help curb global warming. In “Ants as a Powerful Biotic Agent of Olivine and Plagioclase ...


    By Ensia

  • Kinetics of acetic acid–enhanced coarse limestone dissolution

    The dissolution kinetics of limestone with organic acid additives was studied by pH–stat method. The results showed that the control step of limestone dissolution was changed with pH changing. At same time, the particle size of limestone was an important effect on its dissolution control step too. Enhancement coefficient of limestone dissolution added acetic acid was the function of pH and ...


    By Inderscience Publishers

  • Synthesis of biphasic calcium phosphate powders by a simple hydrolysis process

    An ideal bone grafting material should be compatible with physiological environment, provoke osseous tissue formation and adapt degradation behaviour to new bone tissue growth. Calcium phosphates, a main inorganic constituent of the human hard tissue, are by far the best substitute materials for bone reconstruction because of their excellent bioactivity, biocompatibility and osteoconductivity. In ...


    By Inderscience Publishers

  • Thermal dissolution of Shengli lignite in ethyl acetate

    Thermal dissolution (TD) of Shengli lignite (SL) in ethyl acetate (EA) was carried out under different conditions, including temperature, solvent to SL ratio (RS/SL), and time. The yields of EA–extractable fractions (EAEFs) increased with raising temperature from 240–300°C, but then decreased when the temperature was higher than 300°C, and the effects of RS/SL and time on EAEF yields was slight ...


    By Inderscience Publishers

  • Mechanisms of arsenic and fluoride release from Chacopampean sediments (Argentina)

    We have examined the sources and mechanisms that control the release of fluoride and arsenate from fluvial and loess sediments collected from the Chacopampean region, Argentina. The two types of sediment show slight differences regarding the mechanism of release. In fluvial sediments the release of fluoride seems to be controlled by the dissolution of primary F–bearing minerals, such as ...


    By Inderscience Publishers

  • Development of fabrication technique in nano–scale resveratrol by collagen

    Resveratrol (3,5,4′–trihydroxy–trans–stilbene, RSV), is found in various plants, including grapes, berries and peanuts. It is also present in wines, especially red wines. RSV has potent antioxidant, anti–inflammatory, and chemo–protective properties used as a biologically active supplement in the prophylaxis of myocardial infarction, diabetes, and tumours. The aim of this study was using ...


    By Inderscience Publishers

  • Effect of different water conditions on dissolution of nanosilver

    This study evaluates the time-dependent dissolution of nanosilver (nAg) in common electrolytes and natural waters. nAg was synthesized via Tollens’ method using sodium citrate as stabilizer; its morphology, UV–Vis spectrum, and particle size were characterized. The dissolved silver was monitored over time using filtration, centrifugation, and inductively coupled plasma atomic ...


    By IWA Publishing

  • Uncoated and coated ZnO nanoparticles life cycle in synthetic seawater

    The increasing production of nanoparticles has raised strong concerns regarding their environmental release. In nanoparticles life cycle scenarios, marine systems constitute one of the main final compartments, and nanoparticles fate in these environments needs to be assessed. Here, dissolution kinetics of commercial uncoated and organic‐coated ZnO nanoparticles in synthetic seawater has been ...


    By John Wiley & Sons, Ltd.

  • Separation of metals and phosphorus from incinerated sewage sludge ash

    Microbial acidification of incinerated sewage sludge ash and dissolution of metals from the acidified ash were investigated using a semi-batch reactor at different solid retention times (SRTs). The average pH values ranged from 0.91 to 1.2 at SRTs longer than 10 days, whereas the reduction of SRT to 4 days resulted in an increase in the pH value to about 2. The dissolution efficiencies of Al, ...


    By IWA Publishing

  • Zinc and copper in roof runoff

    The zinc and copper content of roof runoff could originate from different sources such as dry and wet deposition and the corrosion of the material. The zinc runoff rate from a galvanized surface depends on the corrosion products formed during the dry days, the rain intensity and roof slope, which determinates the contact time. In the present study the contact time dependence of zinc rate and the ...


    By IWA Publishing

  • The chemical evolution of groundwater in the Kerman plain aquifer, Iran

    A comprehensive hydrogeochemical study was carried out in the Kerman Plain Aquifer, Iran. Groundwater samples were collected from 58 sites. Groundwater was analysed for major constituents (Na+, K+, Ca2+, Mg2+, Cl−, SO42− HCO3−. Different methods including composite diagrams, saturation indices and ...


    By Inderscience Publishers

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