{"id":71513,"date":"2023-07-10T09:43:17","date_gmt":"2023-07-10T07:43:17","guid":{"rendered":"https:\/\/www.kwrwater.nl\/actueel\/bioassays-als-bruikbare-tool-in-de-circulaire-economie\/"},"modified":"2023-07-12T09:25:41","modified_gmt":"2023-07-12T07:25:41","slug":"bioassays-as-a-useful-tool-in-the-circular-economy","status":"publish","type":"post","link":"https:\/\/www.kwrwater.nl\/en\/actueel\/bioassays-as-a-useful-tool-in-the-circular-economy\/","title":{"rendered":"Bioassays as a useful tool in the circular economy"},"content":{"rendered":"<div class=\"post_intro\">\n<p>In water reuse \u2013 an important link in the circular economy \u2013 bioassays can be a useful tool for assessing water quality. That has emerged from the report \u2018Bioassays for Water Quality Assessment in the Circular Economy\u2019 that was recently published as part of the collective research programme Water in the Circular Economy (WiCE). The study was conducted by KWR in collaboration with Waternet, De Watergroep, Het Waterlaboratorium, the German Federal Environmental Agency (Umweltbundesamt), the Hogeschool Utrecht and Toxys.<\/p>\n<\/div>\n<p>Because fresh water from groundwater or surface water is scarce during dry periods, there is growing interest in reusing rainwater, and the treatment of treated domestic and industrial waste water. This requires studying the potential risks that may arise along the way as a result of the circulation and accumulation of microbial and chemical contaminants. Bioassays have proven effective for the assessment of the chemical quality of water sources and the effectiveness of water treatment processes. Could this instrument also be used to test water quality during water reuse? And which bioassay should be used?<\/p>\n<h2>Broad spectrum<\/h2>\n<p>These questions were addressed by the report <a href=\"https:\/\/library.kwrwater.nl\/publication\/70584197\/\">\u2018Bioassays for Water Quality Assessment in the Circular Economy\u2019<\/a>. Research in the past focused on considerations underlying the selection of bioassays and on the interpretation of the results in different water flows. The report describes how the applicability of a broad spectrum of bioassays was investigated for alternative sources and water use\/reuse applications. \u201cWhen bioassays are used for this purpose, water utilities and other stakeholders can make informed decisions about alternative sources and water reuse applications on the basis of water quality data,\u201d says KWR researcher Astrid Reus. She presented her findings at the <a href=\"https:\/\/www.kwrwater.nl\/actueel\/wice-inspiratiesessie-samen-werken-aan-water-circulariteit-en-duurzaamheid\/\">WiCE Inspiration Session<\/a> recently.<\/p>\n<h2>Applicability of bioassays<\/h2>\n<p>The results show that bioassays are suitable for demonstrating the presence of substances with specific actions in the situations described. They can also be used to assess the effectiveness of a water treatment process. In addition, bioassays are a useful tool for screening and prioritising water samples for further assessment, including chemical identification and integrated risk assessment.<\/p>\n<h2>Determining toxicity<\/h2>\n<p>The bioassay results seen during the study can be linked to specific substances to determine the cause of the observed toxicity by combining the bioassay results with <a href=\"https:\/\/www.kwrwater.nl\/projecten\/non-target-screening\/\">broad chemical analysis<\/a> and effect-directed analysis (EDA). The evaluation of the results using the available experiment databases and predictions using <a href=\"https:\/\/www.kwrwater.nl\/projecten\/qsar-en-read-across-modellen-voor-waterkwaliteit\/?highlight=in%20silico%20tools\">computer models<\/a> are also essential here. When the cause of a measured effect is explained in a bioassay, this information helps to make the right decisions during the production of drinking water in order to prevent any risks for health or the environment. Bioassays are valuable as support tools for decision-making about the use of alternative sources and water reuse applications. To optimise risk assessment, a good standard set needs to be selected from the available options.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Bioassays for water quality monitoring useful for decisions about alternative sources and water reuse applications.<\/p>\n","protected":false},"author":6,"featured_media":34873,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_relevanssi_hide_post":"","_relevanssi_hide_content":"","_relevanssi_pin_for_all":"","_relevanssi_pin_keywords":"","_relevanssi_unpin_keywords":"","_relevanssi_related_keywords":"","_relevanssi_related_include_ids":"","_relevanssi_related_exclude_ids":"","_relevanssi_related_no_append":"","_relevanssi_related_not_related":"","_relevanssi_related_posts":"","_relevanssi_noindex_reason":"","footnotes":""},"categories":[9],"tags":[],"class_list":["post-71513","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news","gtag-water-reuse","gtag-water-quality","gtag-bioassay-en","gtag-circular"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.2 - 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