dissolved metal recovery Articles

  • Oil Recovery

    Industrial Wastewater Treatment Success Stories Oil Water Emulsion Wastewater Treatment Industry Oil Recovery - Improved Efficiencies A refinery was having several upsets in their ...


    By Integrated Engineers Inc.

  • Sorption kinetic studies using metal chelate embedded polymers for recovery of heavy metals from desalination effluents

    The heavy metals, such as uranium and vanadium, are some of the valuable metals in desalination effluents. Metal Chelate Embedded Polymers (MCEP) in leaflet form were prepared using the post-irradiation induced graft polymerisation technique, with different non-woven thermally bonded fibrous substrate materials. The novel sorbents, synthesised by using accelerator energy beams of 1.25 MeV and 2 ...


    By Inderscience Publishers

  • Liberating contaminants for easy recovery

    The number one challenge associated with most site remediation designs and methodologies is that 90-95 per cent of all environmental contaminants are present in an adsorbed phase onto soil and bedrock surfaces within both saturated and unsaturated zones. Contaminants, including hydrocarbons (LNAPL), chlorinates (DNAPL) and heavy metals, are sorbed onto the substrates and so have reduced mobility ...


    By Ivey International Inc.

  • Recovery of phosphorus and aluminium from sewage sludge ash by a new wet chemical elution process (SESAL-Phos-recovery process)

    The potential of a new wet chemical process for phosphorus and aluminium recovery from sewage sludge ash by sequential elution with acidic and alkaline solutions has been investigated: SESAL-Phos (sequential elution of sewage sludge ash for aluminium and phosphorus recovery). Its most innovative aspect is an acidic pre-treatment step in which calcium is leached from the sewage sludge ash. Thus ...


    By IWA Publishing

  • Application of Membrane Technology for the Recovery and Reuse of Water

    Abstract As water and sewer costs are expected to increase over the next decade, membrane technology will continue to be a viable and economical option in the recovery and reuse of water. This paper describes the mechanism of membrane effected separation (specifically reverse osmosis, ultrafiltration and microfiltration), membranes commercially available, membrane element configurations, and how ...


  • Recovery of stainless steel pickle liquors: Purification vs. Regeneration

    Pickling Chemistry During finishing of stainless steel, the metal is typically rolled and then annealed to achieve the desired structure and material properties. Because annealing is carried out in the presence of air, a film of oxide consisting mainly of chromium oxide (Cr2O3), ferrous oxide (FeO), and manganous oxide (MnO) forms on the surface of the steel. The Cr2O3 content is normally ...


    By Eco-Tec Inc.

  • Chemical recovery - Recycle Fluid Technologies, Inc. - case study

    Application Recycle Fluid Technologies, Inc., of Richland Michigan recovers ethylene glycol of higher purity and greater volumetric yield. The recovered product must meet stringent General Motors and ASTM Standards. Waste Description The used ethylene glycol contains inhibitor salts, ash, dissolved metals, organic acids, motor oils and other variable ...


  • Recovery of phosphorus from sewage sludge in combination with the supercritical water process

    In this paper, the fraction transformation and recovering of phosphorus (P) from sewage sludge (SS) residues, derived from supercritical water process, was investigated by extraction and precipitation processes. In addition, the form of heavy metals existing during the recovery process is also discussed. First, P in the solid residues was recovered by acid leaching with HCl, and then the derived ...


    By IWA Publishing

  • Recovery of Ruthenium and Other PGMs from Spent Petrochemical Catalysts

    The recovery of platinum group metals from spent petrochemical catalysts has economic benefits by the protection of the supply chain of these valuable and rare metals, thereby helping to create a sustainable value chain in the petrochemical industry for catalysts. Introduction The platinum group metals (PGMs) are used extensively in catalysts for the petrochemical industry owing to ...

  • A chemo-biological treatment of scrubbing water from power plants with recovery of value-added products

    A chemo-biological approach for treating sulphate-rich effluent generated during wet scrubbing of flue gas emissions from fossil fuel fired power plants has been discussed. Microbial sulphate reduction was carried out in an anaerobic up-flow packed bed bioreactor (R1) using ethanol as carbon source. More than 90% of Total Equivalent Sulphate (TES) present in the effluent was reduced to sulphide ...


    By Inderscience Publishers

  • Water Recovery from an Aluminum Can Manufacturing Process Using Spiral-Wound Membrane Elements

    Abstract A waste treatment unit has been designed to recover water and various components from an aluminum can manufacturing process. Due to the scarcity of water in the Middle East and its inherent cost, water recovery is both necessary and cost effective. The manufacturing process generates: 1) an 11,356 L/hr (50 gpm) aqueous stream contaminated with hydrofluoric acid, dissolved aluminum, and ...

  • Ivey-sol technology has potential to increase oil recovery of oil-sands waste by 15-25 percent

    Alberta’s oil sands are comprised of one of the world's largest sources of bitumen, containing an estimated 1.6 trillion barrels. About two tonnes of oil sands must be dug up and processed to produce one barrel of oil. Oil sands recovery processes include extraction and separation systems to remove bitumen from sand and water. Separating the oil from the sand is difficult and costly, and getting ...


    By Ivey International Inc.

  • Using Nanofiltration in Beverage Production

    The following article is based on a paper presented in August, 1990 at the 21st Annual Meeting of the Fine Particle Society in San Diego. Soft drink manufacturers, not to mention manufacturers of other beverage products, have always had a keen interest in the water that goes into their products. After all, it is the water that typically makes up 80%-90% of the product. In the past the water has ...

  • REX Evaluation Guide

    REXTM (Real-timeElementalX-ray Fluorescence System) is the only instrument capable of unattended real-time elemental analysis of dissolved metallic contents in fluids using X-ray fluorescence with low parts-per-billion (ppb) sensitivity. Important applications exist for the following industries, among others: Municipal drinking water supply Chemical processing industry Mining ...

  • Remediation of silty-clay hydrocarbon contaminated site using Ivey-sol selective phase transfer technology

    Earlier this year, Ivey International Inc. secured its first remediation project in Alberta using its Ivey-sol Selective Phase Transfer Technology (SPTT). This patented technology is being used to treat extensive soil and groundwater contamination at an active service station in Red Deer, Alberta. With a residential area nearby, the environmental sensitivity is relatively high. Unfortunately, ...


    By Ivey International Inc.

  • First use of a GCL in a copper heap leach pad

    PROJECT: Carlota Copper Mine Heap Leach Pad LOCATION: Globe Miami, AZ PRODUCTS: BENTOMAT® DN BACKGROUND: The Carlota Copper mine is an open-pit copper mine located approximately six miles west of Miami, Arizona. The site produces LME grade copper cathode through the process of heap leaching, in which a chemical solution ...


    By CETCO

  • Sludge Disposal that’s Sustainable, Safe and Economically Viable

    The Kemwater Recycling Process – KREPRO for treatment of sewage sludge is based on a completely new separation technology, which uses existing knowledge in an innovative way. It reduces both the organic and inorganic content of the sludge. The organic content is re-duced by about 30% and the inorganic about 70% if digested sludge is treated. All metals and salts are dissolved; the remaining ...


  • High Purity Boiler Water Production Using Municipal Wastewater at a Combined Cycle Gas-Fired Generating Station

    The recovery of wastewater for industrial uses presents many challenges for the design and operation of water treatment equipment. Since the term wastewater can be applied to a wide range of water sources from municipal sewage to storm runoff to industrial discharge water, the water characteristics may have great variability. As such, the equipment to treat wastewater must be robust and ...


    By Eco-Tec Inc.

  • PaHs: Beazer East, Inc. - Denver, Colorado, USA

    Project In Situ Biogeochemical Stabilization (ISBS) of Creosote/Pentachlorophenol NAPLS Using Permanganate Summary A growing number of non-aqueous phase liquid (NAPL) removal technologies have been promoted commercially over the past few years, including: thermal-enhanced recovery, surfactant flooding, steam- and temperature-enhanced extraction and others. It is ...


  • Soil Washing

    Introduction: Soil washing is a water-based process for scrubbing soils ex situ to remove contaminants. The process removes contaminants from soils in one of two ways: By dissolving or suspending them in the wash solution (which can be sustained by chemical manipulation of pH for a period of time). By concentrating them into a smaller volume of soil through particle size ...

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