Ammonium Monitoring Articles

  • Application of magnetic enhanced bio-effect on nitrification: a comparative study of magnetic and non-magnetic carriers

    A novel magnetic carrier with surface magnetic field of 4 mT was developed for studying the magnetic enhanced bio-effect on nitrification. The bio-effect on nitrificaton induced by the magnetic carrier was studied by comparing the performance of sequencing batch biofilm reactors filled with magnetic (MC) and non-magnetic (NMC) carriers. The result showed that the bioreactor with MC had better ...


    By IWA Publishing

  • High nitrogen removal rate using ANAMMOX process at short hydraulic retention time

    The anaerobic ammonium oxidation (ANAMMOX) is a chemolithoautotrophic process, which converts NH4+ to N2 using nitrite (NO2−) as the electron acceptor. This process has very high nitrogen removal rates (NRRs) and is an alternative to classical nitrification/denitrification wastewater treatment. In the present work, a strategy for nitrogen ...


    By IWA Publishing

  • Adsorption characteristics of ammonium exchange by zeolite and the optimal application in the tertiary treatment of coking wastewater using response surface methodology

    Natural zeolite is a favorable NH4+-ion exchanger in the tertiary wastewater treatment. In this study, a natural Chinese zeolite was anatomized using the mercury injection method, X-ray diffraction, and scanning electron micrographs. The kinetic process of ammonium adsorption onto the zeolite was best described by the pseudo second order model; the adsorption equilibrium data ...


    By IWA Publishing

  • Toxicity evaluation of two typical surfactants to Dunaliella bardawil, an environmentally tolerant alga

    Sodium dodecyl benzene sulfonate (SDBS) and cetyl trimethyl ammonium chloride (CTAC) are two kinds of surfactants widely applied in various industries. The tremendous direct discharge of these surfactants into natural waters has posed a significant threat to ecosystems. Dunaliella bardawil was employed in the present research to test the toxic effects of SDBS, CTAC, and their mixture on cell ...


    By John Wiley & Sons, Ltd.

  • Adsorption of ammonium using waste activated sludge from palm oil mill effluent treatment plant

    Low cost adsorbent was prepared using waste activated sludge (WAS) from a palm oil mill effluent (POME) treatment plant, and used to adsorb ammonium from aqueous solution. The effect of initial concentration, temperature, pH and adsorbent dose was studied in batch test to determine the kinetic and thermodynamic properties. The results showed that the uptake of ammonia increased with an increase ...


    By Inderscience Publishers

  • In-pipe monitors turn dreams into reality

    In-pipe monitors turn dreams into reality The quality of tap water has improved enormously in recent decades, but for largely technological reasons, until recently, knowledge of water quality between the treatment works and the tap has been an almost impossible dream for water treatment and distribution network managers. In this article, Jo Cooper, Product Specialist at Intellitect Water, will ...


    By Intellitect Water Ltd

  • LC/MS/MS analysis of metabolites of synthetic Cannabinoids JWH-018 and JWH-073 in Urine

    Abstract A liquid chromatographic method was developed to resolve a comprehensive set of metabolites of JWH-018 and JWH-073. In addition to the chromatographic analysis method, an extraction method was developed to recover a broad range of synthetic cannabinoid metabolites, including carboxylic acid metabolites that are not traditionally recovered using a high pH liquid/liquid extraction. ...


    By Restek Corporation

  • Flotation of copper residues with high oxidation and combination ratios

    Sulphidising flotation was employed to successfully recover copper residues with high oxidation and combination ratios and the main components of the mineral chrysocolla (CuSiO3). Sodium sulphide (Na2S), ammonium sulphate ((NH4) ...


    By Inderscience Publishers

  • Monitoring the nitrification and identifying the endpoint of ammonium oxidation by using a novel system of titrimetry

    Based on the structure of the hybrid respirometer previously developed in our group, a novel implementation for titrimetry was developed, in which two pH electrodes were installed at the inlet and outlet of the measuring cell. The software capable of digital filtering and titration time delay correction was developed in LabVIEW. The hardware and software of the titrimeter and the respirometer ...


    By IWA Publishing

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