{"id":169,"date":"2021-03-28T08:54:00","date_gmt":"2021-03-28T08:54:00","guid":{"rendered":"https:\/\/micbacindia.com\/blog\/?p=169"},"modified":"2021-04-06T08:58:53","modified_gmt":"2021-04-06T08:58:53","slug":"granular-activated-carbon-a-filtration-and-adsorption-medium","status":"publish","type":"post","link":"https:\/\/micbacindia.com\/blog\/granular-activated-carbon-a-filtration-and-adsorption-medium\/","title":{"rendered":"Granular Activated Carbon \u2013 A Filtration and Adsorption Medium"},"content":{"rendered":"\n<p>Do you know what GAC or granular activated carbon is? GAC or\ngranular activated carbon is a hybrid mixture of diverse graphite platelets interconnected\nby non-graphitic carbon bonding. GAC has good adsorptive capacity which enables\nit to remove various contaminants from gases, liquids, air and water. Moreover,\nGAC is an eco-friendly product that is reactivated by thermal oxidation and is\nused for the same application for multiple times. <\/p>\n\n\n\n<p>EPA or Environmental Protection Agency of the U.S. and other\nhealth departments regard that adsorption through GAC is the most effective\ntechnology for removing organic materials from surface water. <\/p>\n\n\n\n<p><strong><em>Production of Activated Carbon <\/em><\/strong><\/p>\n\n\n\n<p><a href=\"https:\/\/micbacindia.com\/\">Activated carbon<\/a> is produced from varieties ofcarbon-rich materials like peat, coconut shells, woods, lignite, subbituminous coal, anthracite and bituminous coal. By chemical or thermal activation these materials get converted to activated carbon. In thermal treatment, steam gasificationis used and in chemical activation, inorganic reactive additives are used at a low temperature. <\/p>\n\n\n\n<p><strong><em>Adsorption by Granular Activated Carbon or GAC <\/em><\/strong><\/p>\n\n\n\n<p>How does the process of adsorption take place? When\nelectronic structure of activated carbon which is the adsorbent interacts with\nsome odor or taste causingsubstance like geosmin, then adsorption takes place. Porous\nsurface of activated carbon kinetically attracts molecular compounds. GAC, when\npaired with UV disinfection system or by its own, is effective in removing the\nfollowing \u2013 <\/p>\n\n\n\n<ul><li>DBPs or Disinfection byproducts related to\nchlorine and other alternativedisinfectants. <\/li><li>Organic materials produced from decaying plants or\nother natural matters that act as precursors for DBPs. <\/li><li>Odor and taste causing compounds. <\/li><li>Algal toxins like anatoxin-A, <em>cylindrospermopsin<\/em>and\n<em>microcystin-LR<\/em>. <\/li><li>Personal care items and pharmaceuticals. <\/li><li>Endocrinedisrupting compounds. <\/li><\/ul>\n\n\n\n<p><strong><em>Filtration by Granular Activated Carbon or GAC <\/em><\/strong><\/p>\n\n\n\n<p>GAC has proved to be an efficient physical filtration mode in water treatment plants. Further, it also protects the quality of the water by adsorption of chemical contaminants or odor and taste causing compounds. Want to have a new GAC filter? Well, before designing any new <a href=\"https:\/\/micbacindia.com\/granular-activated-carbon\">Granular Activated Carbon<\/a> filter or attaching a filter with GAC, it is necessary to take into account certain practical considerations. They are \u2013 <\/p>\n\n\n\n<ul><li>Filter on-stream timing <\/li><li>Hydraulic requirements <\/li><li>Availability of backwash water<\/li><li>Properties of GAC like its density, abrasion\nresistance and adsorption ability<\/li><li>Evaluation of the cost required to convert a\nfilter into GAC <\/li><\/ul>\n\n\n\n<p>\n\n\n\n\n\n\n\n\n\nMake sure that the filter design allows optimal expansion\noffering a few inches of clearance between bottom and top of backwash trough. Thus,\nGAC not only filters water but also its residual substance.\n\n\n\n<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Do you know what GAC or granular activated carbon is? GAC or granular activated carbon is a hybrid mixture of diverse graphite platelets interconnected by non-graphitic carbon bonding. GAC has good adsorptive capacity which enables it to remove various contaminants from gases, liquids, air and water. Moreover, GAC is an eco-friendly product that is reactivated [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":170,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Granular Activated Carbon \u2013 A Filtration and Adsorption Medium - micbacindia<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/micbacindia.com\/blog\/granular-activated-carbon-a-filtration-and-adsorption-medium\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Granular Activated Carbon \u2013 A Filtration and Adsorption Medium - micbacindia\" \/>\n<meta property=\"og:description\" content=\"Do you know what GAC or granular activated carbon is? GAC or granular activated carbon is a hybrid mixture of diverse graphite platelets interconnected by non-graphitic carbon bonding. GAC has good adsorptive capacity which enables it to remove various contaminants from gases, liquids, air and water. 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