acid waste Articles

  • Amino acid analysis matrix independent analysis of free amino acids

    Pickering Laboratories specializes in manufacturing of cationexchange columns and eluants for amino acid analysis. No other techniques have been shown to match the reproducibility and sensitivity of this post-column methodology. Advantages of this method, such as absence of matrix interferences, are especially important in analysis of native samples. Pickering provides several options for the ...

  • Acid dyes adsorption onto activated carbon from waste tyres

    Activated carbon has been produced from waste tyres using chemical treatment. The effects of activation chemical used, chemical ratio, soaking time in the impregnation step, activation temperature and time duration of the activation step were investigated. Surface area, pore size distribution, total pore volume, adsorption capacities of acid dyes (AY117 & AB25) were determined. The carbon product ...


    By Inderscience Publishers

  • Acid mine drainage treatment

    Acid mine/rock drainage is a rampant problem in the world today. The above photo depicts acid drainage at an abandoned mine in the Yukon Territory of northwest Canada. This mine shares a similar history to thousands of other mines throughout the world. It was in operation for six short years in the 1950’s, producing gold ore. Its profitability eventually failed and it was abandoned. In the ...


    By WesTech Engineering, Inc.

  • Anaerobic fermentation of organic solid wastes: volatile fatty acid production and separation

    Anaerobic fermentation of organic municipal solid waste was investigated using a leach-bed reactor (LBR) to assess the volatile fatty acid (VFA) production efficiency. The leachate recycle rate in the LBR affected the VFA composition of the leachate. A six-fold increase in the recycle rate resulted in an increase of the acetic acid fraction of leachate from 24.7 to 43.0%. The separation ...


    By IWA Publishing

  • Temperature–dependent polylactic acid (PLA) anaerobic biodegradability

    Polylactic acid (PLA) biodegradability is mostly claimed according to PLA biodegradation behaviour under aerobic composting conditions. However, waste materials containing PLA are frequently disposed of in municipal landfills, which are operated anaerobically. PLA anaerobic sludge digestion results are acquired to elucidate effects of the degrading temperature on PLA biodegradation. When the ...


    By Inderscience Publishers

  • Recovery of volatile fatty acids (VFA) from complex waste effluents using membranes

    Waste effluents from anaerobic digesters of agricultural waste were treated with a range of membranes, including microfiltration and nanofiltration (NF), to concentrate volatile fatty acids (VFA). Microfiltration was applied successfully to produce sterile, particle-free solutions with a VFA concentration of 21.08 mM of acetic acid and 15.81 mM of butyric acid. These were further treated using a ...


    By IWA Publishing

  • Peroxy-acid treatment of selected PAHs in sediments

    In an attempt to address some of the disadvantages of the common biotic and abiotic processes used for the degradation of Polycyclic Aromatic Hydrocarbons (PAHs), an alternative strategy utilising a primary chemical oxidative step to be combined with a biological post-treatment step was created. The degradation of α-methylnaphthalene, fluorene, phenanthrene, anthracene, pyrene and ...


    By Inderscience Publishers

  • Activated bauxite waste as an adsorbent for removal of Acid Blue 92 from aqueous solutions

    Bauxite waste, known as red mud, is produced in some industrial processes, such as aluminum production process. In this process, the waste material is produced from leached bauxite as a by product. In this research, the removal of Acid Blue 92 (AB92) dye was investigated from aqueous solution onto the activated bauxite waste (red mud) in a batch equilibration system. Besides, the influences of ...


    By IWA Publishing

  • Amino Acid Fermentaion Broth Clarification

    Amino acids are the basic unit of protein composition, most amino acids are produced by fermentation method. Fermentation broth is an extremely complex system and contains microbial cells, metabolites, unconsumed medium, etc. The traditional method such as centrifuge and plate and frame pressure filtration,  filtrate quality is poor, soluble protein, sugar, peptide, pigment and other ...


    By Jiangsu Jiuwu Hi-tech Co

  • Emerging Waste Conversion Technologies

    Today, people and companies are more aware and concerned about the environment than ever before. Everyone is looking for ways to reduce waste or convert organic waste into something more useful. The Federal Government has introduced a renewable energy policy and is continuing to fund for new waste conversion technology. It is now important for local governments to portray their cities and towns ...


    By Compactor Management Company

  • Use of waste whey in tanning industry

    The name of the deliming process suggests that the aim of the process is to remove the lime from the white hide. However, this is not complex enough. The primary purpose of the deliming procedure is to prepare the hide for bating and pickling. In order to do that, it is necessary to reach a suitable pH level to permit the bating enzymes to be active, and partially remove the excess lime. It is ...


    By ORBIT e.V.

  • Influence of the comminution of organic waste on their biodegradability

    Organic solids are present in very large quantities as products or waste from agriculture, food industry, household and many other fields. The disposal of organic waste can be realised using biological processes like anaerobic digestion or aerobic composting. The anaerobic digestion has advantages in comparison to composting such as a better handling of wet waste, the production of useful ...


    By ORBIT e.V.

  • Minicipal Waste Incinerator Case History

    Low temperature plant operation had resulted in severe baghouse corrosion and constant dust blockages throughout the system. It was decided to raise the operational temperature of the incinerator and change the acid gas scrubbing agent from lime to sodium bicarbonate. However, the existing felt filter media could not cope with the change in acid gas scrubbing agent and “blinded” very rapidly ...


    By W. L. Gore & Associates

  • IPEX Plenumline Acid Waste System helps North Carolina State University in Comprehensive Renovation

    North Carolina State University in Raleigh, N.C. was founded in 1889 and currently enrolls close to 30,000 undergraduate students. Even from its historic beginning, this century old university has managed to remain 'modern1 in an effort to recruit the Nation's brightest minds. Keeping with this trend, the Biology department recently expanded their facilities to match the rapidly increasing ...


    By IPEX, Inc.

  • Production of propionic acid-enriched volatile fatty acids from co-fermentation liquid of sewage sludge and food waste using Propionibacterium acidipropionici

    Volatile fatty acids (VFA), derived from sludge fermentation, have been used as one effective carbon source for biological nutrient removal, especially favorable with VFA containing with high levels of propionic acid. In this paper, a new fermentation method was employed to significantly produce the propionic acid-enriched VFA from the co-fermentation liquid of sewage sludge and food waste: ...


    By IWA Publishing

  • Komax teflon lined mixer simplifies acid injection for power plant

    A major source of waste water in many power plants is the waste stream that results from ion exchange used for demineralizing the boiler feed water. The alkaline regeneration waste stream produced by the ion exchange process requires the addition of an acid to this stream before discharge from the plant. Regulatory authorities typically require the effluent to have a near neutral pH before ...


    By Komax Systems, Inc.

  • Determination of the Environmental TCLP Metals in Waste-Waters, Solid Wastes, and Soils by Flame Atomic Absorption Spectrophotometry

    Hazardous wastes can originate from many sources – industrial processes, product formulations, synthetic operations, virtually any manufacturing business. The nature and composition of the “wastes” can vary so much that one industry’s discharge can serve as another’s raw materials. It is the tremendous transfer of these materials – their storage, transportation, spillage and leakage into the ...


    By Buck Scientific Inc

  • Oil and grease in waste water

    Determination of oil and grease in waste water according to Standard Methods AWWA 5520 This Application Note describes the extraction and determination of oil and grease from waste water samples following Standard Methods 5520 part D (Soxhlet Extraction Method). “Oil and grease” is defined as any material recovered as a substance soluble in the solvent. Therefore, compounds ...


    By BÜCHI Labortechnik AG

  • Water mixing in waste lagoons

    Man-made lagoons have been used worldwide for the treatment of domestic and industrial wastewater, it seems, forever. All waste lagoons were first designed and thoughtfully planned considering their locations, soil makeup, and waste reduction processes prior to being implemented. The biological process of organic waste reduction is always a consideration of waste lagoon designs. There are three ...


    By Reliant Water Technologies

  • Treating organic waste with Cambi® THP

    This paper describes how the Cambi Thermal Hydrolysis Process (THP) treats biodegradable organic waste and converts it to renewable energy and pathogen-free and bio-fertilizer. The interest for the process is expected to increase due to new environmental legislation as well as increasing demand for renewable energy. The implementation of the European Landfill Directive 1999/31EC and the Animal-by ...


    By Cambi Group AS

Need help finding the right suppliers? Try XPRT Sourcing. Let the XPRTs do the work for you