Скачать или смотреть Cost-effective, Green and Sustainable Filtration Media for Multi-pollutant Removal

Full Title: Cost-effective, Green and Sustainable Filtration Media for Multi-pollutant Removal: An Inter-disciplinary Sustainability Solution

Abstract: Nutrient and heavy metal pollution due to agricultural discharge, stormwater runoff, wastewater effluent, tailing water release from mining sites, and improper waste disposal has augmented the impact of economic development on ecosystem integrity in receiving waterbodies, causing harmful algal bloom, hypoxia, eutrophication etc. Besides, nonpoint sources pollution from agricultural crop fields and dairy farms oftentimes have elevated concentrations of dissolved organic nitrogen (DON) in stormwater runoff, which are difficult for microbial communities to decompose. A series of cost-effective, sustainable, and green sorption media were developed for removal of these existing and emerging pollutants of importance. Mixed recycled and natural materials with synergized recipes were developed for three types of green sorption media for nutrient removal and possible recovery in high nutrient-laden agricultural discharge and stormwater runoff as well as removal of other existing and emerging pollutants of concern. The three generations of “green sorption media” in sequence include: 1) bio-sorption activated media (BAM), 2) iron-filings based green environmental media (IFGEM), and 3) aluminum-based green environmental media (AGEM). Liquid Chromatography with tandem mass spectrometry (LC-MS-MS), quantitative Polymerase Chain Reaction (qPCR) and Fourier transform ion cyclotron resonance mass spectrometer (FT-ICR-MS) were used for functional analysis. These green sorption media have been proven effective at both laboratory- and field-scale and widely applied to almost 300 sites in the United States. The most recent pilot-scale project is related to the use BAM and IFGEM to simultaneously remove nitrogen species, phosphorus species, algal toxins, algal mass, E Coli, and Per/polyfluoroalkyl Substances (PFAS) from canal water upstream of the St. Lucie River and Estuary, Florida. PFAS are deemed as emerging pollutants of concern worldwide. Preliminary design of the filter with 3-million-gallon capacity per day along the C-23 canal feeding the St. Lucie River and Estuary has been completed to document cost-effectiveness and operational efficiencies. Most recent advancements have been directed to test IFGEM/AGEM for color (humic acids) removal in river water of Black Creek, north Florida before delivering 10 million gallon per day to a lake for drinking water treatment and the use of BAM for DON removal for large-scale C-43 off-reservoir treatment in south Florida with 189-million-gallon capacity per day.

Full Article: https://proceedings.iaamonline.org/ar...
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