organic adsorbent media Articles

  • Halogenated Volatile Organic Compounds

    Sites where halogenated VOCs may be found include burn pits, chemical manufacturing plants or disposal areas, contaminated marine sediments, disposal wells and leach fields, electroplating/metal finishing shops, firefighting training areas, hangars/aircraft maintenance areas, landfills and burial pits, leaking collection and system sanitary lines, leaking storage tanks, radioactive/mixed waste ...

  • Impact of hydraulic loading rate and media type on removal of bulk organic matter and nitrogen from primary effluent in a laboratory-scale soil aquifer treatment system

    The effect of hydraulic loading rate (HLR) and media type on the removal of bulk organic matter and nitrogen from primary effluent during soil aquifer treatment was investigated by conducting laboratory-scale soil column studies. Two soil columns packed with silica sand were operated at HLRs of 0.625 and 1.25 m/d, while a third column was packed with dune filtering material and operated at HLR ...


    By IWA Publishing

  • Evaluation of Tire Derived Rubber Particles for Biofiltration Media

    ABSTRACTCurrently, on average, one tire is discarded in the U.S. for every man woman and child every year. While the reuse market for used tires has increased over the years to approximately 75%, there are still an estimated 2-3 billion used tires stockpiled in the U.S. Finding economical and sustainable end uses for this tire material is an ongoing challenge to environmental engineers and ...

  • Granular activated carbon for removal of organic matter and turbidity from secondary wastewater

    A range of commercial granular activated carbon (GAC) media have been assessed as pretreatment technologies for a downstream microfiltration (MF) process. Media were assessed on the basis of reduction in both organic matter and turbidity, since these are known to cause fouling in MF membranes. Isotherm adsorption analysis through jar testing with supplementary column trials revealed a wide ...


    By IWA Publishing

  • Adsorption of polycyclic aromatic hydrocarbons from wastewater by using silica-based organic–inorganic nanohybrid material

    Polycyclic aromatic hydrocarbons (PAHs) are a group of priority pollutants, which are classified as persistent hazardous contaminants. Herein, the adsorption of three PAHs, naphthalene (NAP), acenaphthylene (ACN), and phenanthrene (PHN), from wastewater onto NH2-SBA-15 organic–inorganic nanohybrid material as a function of pH of the media (2–10), sorbent dosage (0.5–3.5 g ...


    By IWA Publishing

  • High adsorption capacity of MWCNTs for removal of anionic surfactant SDBS from aqueous solutions

    Multi-walled carbon nanotubes (MWCNTs) are an effective adsorbent for removing various organic and inorganic contaminants because of their high surface area. In this study, MWCNTs were used to investigate the removal of sodium dodecyl benzene sulfonate (SDBS) in industrial wastewater. The effect of pH, adsorbent dosage, dispersion time and temperature on the kinetics and equilibrium of SDBS ...


    By IWA Publishing

  • In-situ stabilization of contaminated sediments at former pesticide facility case study

    Project: West Doane Lake Location: Portland, OR Products: Organoclay® Organic Adsorption Media, Bentomat® ST Geosynthetic Clay Liner Background: Clean-up action was approved by the DEQ for contaminated sediments in West Doane Lake at the former Rhone Poulenc pesticide manufacturing facilitysite located in Northwest ...


    By CETCO

  • CO2 adsorption over ion-exchanged zeolite beta with alkali and alkaline earth metal ions

    The need to reduce anthropogenic CO2 emissions has been the driving force to consider new approaches and novel ideas for CO2 management, and carbon capture and storage (CCS) are considered to potentially be the most effective means to alleviate the problem. The most common method for CO2 capture is via gas absorption, with monoethanol amine (MEA) being the most widely used solvent. The current ...


    By Hiden Analytical

  • Project profile - Blue Rhino Hamptonville, NC

    Background In 2007, Blue Rhino, located in Hamptonville, NC, contacted AdEdge Technologies, Inc. (AdEdge) to install an iron and manganese treatment system. The amount of iron (5.6 mg/L Fe) and manganese (0.6 mg/L Mn) were well above the maximum contaminant levels of 0.3 mg/L Fe an 0.05 mg/L Mn respectively. The pH of the Blue Rhino site (6.10) was quite below the maximum contaminant ...

  • New play on organoclay

    AquaBlok, Ltd., a manufacturer of innovative clay-based composite materials, has announced the introduction of a new organoclay product that provides for ease of delivery and improved performance of this well known remedial material technology. What the company calls 'AquaBlok+ORGANOCLAY' will preferentially adsorb and sequester a wide range of hydrocarbon and petroleum based contaminants. It can ...

  • Los Angeles County Sanitation Districts: Siloxane Removal

    Los Angeles County Sanitation Districts have long been involved with recovering landfill and digester gas for energy to power turbines and internal combustion engines. Their experience led them to identify performance issues associated with these gases. One particular challenge is siloxanes. Cyclic organic silicon monomers (siloxanes) used in the manufacture of personal hygiene, health care and ...


    By Pioneer Air Systems

  • HS-200 Stands the test of heavy manufacturing

    A manufacturer of aircraft component generates a free and emulsified oily wastewater, which results from their machining, milling, cutting, and other operations. Presently, they are using skimmers and dissolved air flotation to remove oil from the water. To remove their heavy metals they follow up with flocculation, precipitation and clarification. Due to the rapidly ...


    By Hydrosil International

  • Biofiltration: An Innovative Technology for The Future

    Biofiltration refers to the biological transformation or treatment of contaminants present in the gas phase, usually air. The fact that air contaminants can be biodegraded by active bacteria has been known for quite some time. However, it is only in the last 10 years, that biofiltration has begun to emerge as an economically viable treatment process. Initially, biofiltration involved the use of ...


    By PRD Tech, Inc.

  • Activated Carbon Applications Excel at PCB Removal

    TIGG’s GAC adsorption equipment is used to remove PCBs from groundwater. For more than 50 years, polychlorinated biphenyls (PCBs) were commonly used in industrial materials including, caulking, cutting oils, inks, paints and as dielectric fluids in electrical equipment such as transformers and capacitors. Concerns over health effects led to a North American ban of ...


    By TIGG, LLC

  • Mitigation of Cu(II) phytotoxicity to rice (Oryza sativa) in the presence of TiO2 and CeO2 nanoparticles combined with humic acid

    Engineered nanoparticles (NPs) and natural organic matter (NOM) in the environment may interact with background contaminants such as heavy metals and modify their bioavailability and toxicity. In this work, the combined influences of two common NPs (TiO2 and CeO2) and humic acid (HA, as a model NOM) on Cu(II) phytotoxicity to rice were investigated by a 3‐day root elongation assay performed on ...


    By John Wiley & Sons, Ltd.

  • Sorption and desorption studies of metallic zinc on an alluvial soil

    Background concentrations of heavy metals in soils, which depend on the local geology, may be supplemented to different degrees by anthropogenic inputs. Many industrial processes and operations generate stack emissions, solid wastes and sludges that contain heavy metals, which enter atmosphere and also find their way into aquatic and terrestrial ecosystems. Being non-biodegradable,  heavy ...


    By University of Tehran

  • Properties and Behavior of Nonhalogenated VOC`s

    An important consideration when evaluating a remedy is whether the compound is nonhalogenated or halogenated. A nonhalogenated compound is one which does not have a halogen (e.g., fluorine, chlorine, bromine, or iodine) attached to it. The vendor of the technology being evaluated must be informed whether the compounds to be treated are nonhalogenated or halogenated. In most instances, the vendor ...

  • Case study - Bi-On Carb OX: Odor treatment in WWTPs. Case study SIMTEJO (Portugal)

    Avoiding problems associated with foul odors in and around collectors and waste water treatment plants is today one of the major focus points to avoid possible issues related to worker safety, as well as minimizing negative social discomforts caused by the foul odors. The main sources that generate foul odors in WWTPs occur at stages of anaerobiosis, where the lack of oxygen favours the ...


    By Bioconservacion SA

  • Case study - Primary settling tanks covering to prevent odors emission

    Primary settling tanks covering to prevent odors emission at the Cambrils Waste Water Treatment Plant The Catalan Water Agency (ACA) commissioned a project aiming to minimize odor emission from a Wastewater Treatment Plant (WWTP) located in Cambrils (Tarragona) that suffered from bothersome smells coming from the primary settling tanks. Occasionally, ...


    By Bioconservacion SA

  • Novel Hybrid PBR-UASB System for the Treatment of Highstrength Pet Food Wastewater

    ABSTRACTPet food industrial wastewater contains high concentration of oil and grease (O&G) which is difficult to treat using conventional biological systems. In this study, anaerobic treatability of pet food wastewater was evaluated in a hybrid packed bed reactor-upflow anaerobic sludge blanket (PBR-UASB) treatment system. The PBR was packed with sol-gel/alginate beads containing immobilized ...

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