{"id":19166,"date":"2019-01-16T13:38:21","date_gmt":"2019-01-16T11:38:21","guid":{"rendered":"https:\/\/zeolife.gr\/zeolite-as-a-means-of-ammonium-recovery-and-secondary-processing-of-cheese-whey-study\/"},"modified":"2019-01-16T13:38:21","modified_gmt":"2019-01-16T11:38:21","slug":"zeolite-as-a-means-of-ammonium-recovery-and-secondary-processing-of-cheese-whey-study","status":"publish","type":"post","link":"https:\/\/zeolife.gr\/en\/zeolite-as-a-means-of-ammonium-recovery-and-secondary-processing-of-cheese-whey-study\/","title":{"rendered":"zeolite as a means of ammonium recovery and secondary processing of cheese whey. [Study]"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">In a recently published study by <strong>the<\/strong> <strong>University of Patras<\/strong>, the effectiveness of <strong>natural zeolite<\/strong> in <strong>removing ammonium ions<\/strong> from synthetic <strong>wastewater<\/strong> and from secondary <strong>whey<\/strong> was investigated.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The aim of the study was to <strong>recover nitrogen-containing nutrients<\/strong> via <strong>zeolite<\/strong>, which can then be used for further applications, such as <strong>slow-release fertilisers<\/strong>.\u00a0<br><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>zeolite<\/strong> with a <strong>clinoptilolite<\/strong> content of at least <strong>85 per cent<\/strong> from <strong>Kardzhali in Bulgaria<\/strong> was used; its technical specifications can be viewed here: <a href=\"https:\/\/zeolife.gr\/products\/zeolithos-apo-2-5-eos-5-chiliosta\/\">Zeolite, 2.5 to 5 millimetres<\/a><br><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Experiments and results for industrial effluents<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Experiments were carried out in flasks and fixed-bed columns to examine the effect of various operating conditions on zeolite performance.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The adsorption experiments were carried out using synthetic wastewater and zeolite of different particle sizes (i.e. 0.71\u20131.0, 1.8\u20132.0, 2.0\u20132.8, 2.8\u20134.0 and 4.0\u20135.0 mm). According to the results, the <strong>particle size distribution<\/strong> of the zeolite <strong>had no<\/strong> significant <strong>effect<\/strong> on its ability to adsorb ammonium ions. Nevertheless, the <strong>smaller<\/strong> particles (0.71\u20131.0 mm) exhibited <strong>faster<\/strong> rates of ammonium ion adsorption<strong>,<\/strong> reaching up to <strong>93.0 per cent<\/strong> within the first 10 minutes. The maximum ammonium removal efficiency from the zeolite was achieved at ammonium concentrations ranging from <strong>10 to 80 mg\/L.<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-image\"><a href=\"https:\/\/zeolife.gr\/wp-content\/uploads\/2019\/01\/zeolite-ammonium-recovery-1-1.jpg\"><img decoding=\"async\" width=\"800\" height=\"644\" src=\"https:\/\/zeolife.gr\/wp-content\/uploads\/2019\/01\/zeolite-ammonium-recovery-1-1.jpg\" alt=\"zeolite as a means of ammonium recovery and secondary processing of cheese whey. [Study]\" class=\"wp-image-14378\" srcset=\"https:\/\/zeolife.gr\/wp-content\/uploads\/2019\/01\/zeolite-ammonium-recovery-1-1.jpg 800w, https:\/\/zeolife.gr\/wp-content\/uploads\/2019\/01\/zeolite-ammonium-recovery-1-1-288x232.jpg 288w, https:\/\/zeolife.gr\/wp-content\/uploads\/2019\/01\/zeolite-ammonium-recovery-1-1-768x618.jpg 768w, https:\/\/zeolife.gr\/wp-content\/uploads\/2019\/01\/zeolite-ammonium-recovery-1-1-267x215.jpg 267w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/a><figcaption>zeolite as a medium for ammonium recovery and secondary treatment of cheese whey. [Study]<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Kinetics experiments revealed that <strong>chemical adsorption<\/strong> is the mechanism behind the <strong>adsorption of ammonium ions<\/strong> by <strong>zeolite<\/strong>, whilst the <strong>Freundlich<\/strong> isotherm best fits the experimental data.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Column experiments using a synthetic solution with an initial ammonium ion concentration of 200 mg\/ L revealed that, for all particle sizes tested, <strong>the zeolite was capable of absorbing almost the entire available concentration of ammonium ions (over 99 per cent)<\/strong> within the first <strong>120<\/strong> <strong>minutes<\/strong>. The same was not observed for the initial concentrations of 5,000 mg\/ L, where only the zeolite with particle sizes of 0.71\u20131.0 mm managed to remove over 99 per cent of the ammonium ions (99.9 per cent) within 120 minutes. All zeolite particle size fractions reached equilibrium much later (24 hours, 96 per cent\u201397 per cent removal of NH\u2084\u207a-N).<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Experiments and results of the treatment of secondary whey<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Natural<\/strong> <strong>zeolite<\/strong> can be used as <strong>an alternative substrate<\/strong> for the treatment of secondary whey, as it can achieve significant <strong>removal<\/strong> of <strong>the<\/strong> <strong>organic load<\/strong> (up to <strong>40%<\/strong>, 14.53 mg COD\/g zeolite) and <strong>ammonium ions<\/strong> (approximately <strong>99 per cent<\/strong>).\u00a0<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">As regards orthophosphate ions, the zeolite appears to reach saturation after the first day of the experiments, with a removal capacity of <strong>0.15 mg P\/g <\/strong>zeolite.\u00a0<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Elution experiments using deionised water in flasks and columns showed <strong>low elution rates<\/strong> for <strong>ammonium<\/strong> and <strong>orthophosphate <\/strong>ions, thus indicating that<strong> this zeolite<\/strong> could be used as <strong>a substrate<\/strong> for <strong>the slow release of nitrogen<\/strong> into <strong>soils<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Furthermore, the prolonged use <strong>of zeolite<\/strong> in the treatment of whey (after three days) led to the formation <strong>of<\/strong> <strong>biomass,<\/strong> <strong>thereby increasing<\/strong> the rate of <strong>organic<\/strong> <strong>load removal<\/strong>.<br><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Read the study <a href=\"https:\/\/zeolife.gr\/en\/zeolite-ammonium-recovery\/\">here<\/a><\/p>\n\n\n\n<div class=\"wp-block-file\"><a href=\"https:\/\/zeolife.gr\/wp-content\/uploads\/2019\/01\/zeolite-ammonium-recovery.pdf\">Download this article here and print <\/a><a href=\"https:\/\/zeolife.gr\/wp-content\/uploads\/2019\/01\/zeolite-ammonium-recovery.pdf\" class=\"wp-block-file__button\" download>itDownload<\/a><\/div>\n","protected":false},"excerpt":{"rendered":"<p>A study by the University of Patras, which investigated the effectiveness of natural zeolite in removing ammonium ions from synthetic wastewater and from whey.<\/p>\n","protected":false},"author":7,"featured_media":14379,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"content-type":"","_kad_blocks_custom_css":"","_kad_blocks_head_custom_js":"","_kad_blocks_body_custom_js":"","_kad_blocks_footer_custom_js":"","_kad_post_transparent":"","_kad_post_title":"","_kad_post_layout":"","_kad_post_sidebar_id":"","_kad_post_content_style":"","_kad_post_vertical_padding":"","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"_kad_post_classname":"","footnotes":""},"categories":[673,691,688,693],"tags":[696,1033,1034],"class_list":["post-19166","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-agriculture","category-zeolite-livestock","category-zeolite-chemical-industry","category-zeolite-environment","tag-theses-zeolite","tag-zeolite-as-a-means-of-ammonium-recovery","tag-zeolite-as-a-means-of-secondary-processing-of-cheese-whey"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.3 - 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