organics testing Articles

  • What classifies as water pollution and why is it an issue?

    The UN declared 2005-2015 as the International Decade for Action ‘Water for Life’. Yet each day thousands of people still die as a result of contaminated water. This does not even take into account the millions of organisms that perish every year thank to polluted water sources. Water pollution is a huge issue that is made more so by the fact that unfortunately, water is ...


    By Aquaread Limited

  • Biodegradability of Dissolved Organic Nitrogen: Adaptation of the BOD Test

    To prevent eutrophication in receiving waters, many astewater treatment plants are being firected by regulatory agencies to achieve very low levels of total nitrogen (3-4 mg/L TN or lower) in the effluent. Dissolved organic nitrogen (DON) component is included within these total nitrogen limits. The regulations assume that DON is completely biodegradable, and therefore needs to be included in any ...

  • PeCOD vs Other Organic Pollution Testing Methods

    Find out How MANTECH’s PeCOD measures up with other systems in organic pollution testing methods! In James Pickup, Rijkswaterstaat Internship Thesis, read how our PeCOD analyzer performs beside the Total Organic Carbon (TOC) method. Also learn how the PeCOD exhibits a strong correlation to the traditional chemical oxygen demand (CODCr) method, Biochemical Oxygen Demand (BOD5) method and ...


    By MANTECH

  • Test organisms behaviour on municipal and industrial wastewater quality assessment

    Industrial wastewaters quality became a target for the environmental toxicity assessment nowadays. When there are issues with complex effluents for which many chemicals cannot be quantified and/or interactive effects are likely to be significant, the use of bioassays with different test species becomes a more reliable way in the assessment of toxicity. Ecotoxicity evaluation of the several ...


    By MicroBioTests Inc.

  • Relationships between exposure and dose in aquatic toxicity tests for organic chemicals

    There is continuing debate about the merits of exposure‐based toxicity metrics such as median lethal concentration (LC50) versus organism‐based metrics such as Critical Body Residue (CBR) as indicators of chemical toxicity to aquatic organisms. To demonstrate relationships and differences between these two metrics we apply a simple one‐compartment toxicokinetic mass‐balance model for ...


    By John Wiley & Sons, Ltd.

  • Testing monolithic activated carbon adsorbers for in-line removal of organic micropollutants

    Anthropogenic organic micropollutants (OMP) occur along the whole urban water cycle including drinking water. Various OMP can be efficiently adsorbed onto activated carbon. In the present study a commercial monolithic adsorber (MA), originally developed for gas treatment, was examined for the removal of OMP from drinking water. As a promising advantage, the adsorber can be introduced into ...


    By IWA Publishing

  • Organic waste biodegradability test bio methane potential method

    Management Summary The biogas production from a mixture of food waste, garden waste, paper, napkins, plastic, metals and glass and anaerobically digested sludge was monitored until gas production had ceased. The homogenised biowaste mixture was subjected to two pre-treatment methods prior to being fed to the BMP reactors, these were: pasteurisation at 70oC ...


    By Cambi Group AS

  • Organics Monitoring (TOC)

    Total organic carbon (TOC) testing is the traditional method for determining organic matter in water. However there is a far more practical, affordable and often more useful way to measure organic matter. UV absorbance testing (UVA) is rapidly becoming the preferred method of measuring organics even when the levels of organics being measured are very small. Organic Matter Organic ...


    By Real Tech Inc.

  • Organics Monitoring: A Practical Guide

    Preventing product loss, lowering waste treatment costs, and reducing system maintenance and energy consumption through organics monitoring in the chemical, refining, food, and wastewater treatment industries. Summary Process water and steam condensate contamination includes organic, inorganic, and biological components. Sources of organic contamination include process ...


    By GE Analytical Instruments

  • Testing the Waters

    Last summer’s wave of tropical storms left the East Coast scrambling to ensure drinking water quality. Water Quality Products editorial intern Raissa Rocha spoke with Marc Hamel of testing equipment manufacturer Horizon Technology Inc. to discuss the impact weather events may have on water quality. Raissa Rocha: What is your experience with ...


    By Horizon Technology, Inc.

  • Case study - Organic particulate filtration

    Overview A food products company that mixes various types of waxes and other components to make the base for chewing gums was faced with the issue of cleaning up a slightly odorous, visible emission being exhausted from two of their process lines. The components of the emission were hot particles of chewing gum and some volatile organic compounds (VOC's). The particles would quickly clog ...

  • Impact of organic residues on soil microorganisms

    It is well known that organic residue amendments to soil give beneficial effects such as provision of plant nutrients, increased humus content and thereby increased water holding capacity, improved structure and increased cation exchange capacity. Organic wastes can be a valuable fertiliser in terms of phosphorous. Chemical precipitation in the sewage treatment plant makes sewage sludge rich in ...


    By ORBIT e.V.

  • Preparing the way for commercial organics recovery

    The Planning for a source-separated commercial organics program began in California's Santa Cruz County in 2001. Businesses were surveyed to determine if there was sufficient interest in separate collection of food, food-soiled paper and wax-coated cardboard to supply a collection route. Many restaurants, markets and residential facilities responded enthusiastically to the idea of collection and ...


    By BioCycle Magazine

  • Japanese Organics Recycling Association Formed

    Another backyard composting adage states that compost should have the feel of a wrung-out sponge — damp but not dripping wet. Actually, a wrung-out sponge may be on the dry side for composting, but the analogy does provide a great image for understanding the reasons for balancing moisture. Like a compost pile (or windrow or material in a vessel), a sponge is a solid mass containing an enormous ...


    By BioCycle Magazine

  • ORGANICS DIVERSION - WITH COMPOST MARKETS IN MIND

    Untitled Document California Integrated Waste Management Board collaborates with local agencies, universities and the composting community to increase demand for quality compost. ...


    By BioCycle Magazine

  • A comparative study of three different assimilable organic carbon (AOC) methods: results of a round-robin test

    Easily assimilable organic carbon (AOC) is frequently used for the assessment of the biological stability of drinking water, which is an important consideration in the control of bacterial growth in distribution networks. The first AOC bioassay was developed in 1982 and is based on growth of two bacterial strains (Pseudomonas fluorescens P17 and Spirillum spp. NOX) in ...


    By IWA Publishing

  • Juvenile zebrafish in the vitellogenin blank period as an alternative test organism for evaluation of estrogenic activity of chemicals

    To determine the suitable development period of zebrafish for accurately evaluating estrogenic activities. An enzyme‐linked immunosorbent assay (ELISA) was developed and used to detect the Vtg‐derived yolk proteins and newly produced Vtg, and 9–56 d post‐hatching (dph) was determined as the Vtg‐blank period. Juveniles in this period was found to have lower baseline Vtg level than adult males ...


    By John Wiley & Sons, Ltd.

  • Rapid small-scale column testing of granular activated carbon for organic micro-pollutant removal in treated domestic wastewater

    This study investigates the applicability of the rapid small-scale column test (RSSCT) concept for testing of granular activated carbon (GAC) for organic micro-pollutants (OMPs) removal from wastewater treatment plant (WWTP) effluent. The chosen experimental setup was checked using pure water, WWTP effluent, different GAC products, and variable hydrodynamic conditions with different flow ...


    By IWA Publishing

  • Use of an avian hepatocyte assay and the avian ToxChip PCR array for testing prioritization of 16 organic flame retardants

    Risk assessors are challenged with the task of providing data for an increasing number of priority chemicals. High‐throughput toxicity screening methods, which permit rapid determination of toxic, molecular and/or biochemical effects of a wide range of chemicals, are essential to help meet this demand. The avian embryonic hepatocyte in vitro screening method has been utilized by our laboratory ...


    By John Wiley & Sons, Ltd.

  • Modification of jar testing protocol combined with mEnCo model predicted dose to predict dissolved organic matter removal for surface water

    In recent climatic events in Australia, the need for frequent jar testing to determine optimum coagulant and flocculant aid doses became apparent in order to determine optimum treatment efficiencies. The generally applied jar test procedure can be time consuming and this prompted investigations for capacity to test waters more rapidly, for a range of treatment conditions and raw water qualities. ...


    By IWA Publishing

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