Lab Filtration Articles

  • The productive environmental laboratory: BSK Labs boosts efficiency with Metrohm IC

    BSK Labs runs a number of environmental laboratories and service centers along the west coast of the US. A total of 70 employees – including microbiologists, chemists, lab technicians, and support staff – make sure that the 200 to 350 samples that come in every week are analyzed. BSK Labs specializes in potable water chemistry, ground water monitoring, storm water runoff, solid waste ...


    By Metrohm AG

  • What can I use to filter my mobile phase?

    If you are using mobile phase that contains salts or, generally, any components that are weighed out for its preparation, you will need to filter the solution before using with HPLC or UHPLC. The most common type of filtration is membrane microfiltration. We sell an extensive group of products for this and they are discussed very well in a blog ...


    By Restek Corporation

  • Characterization of ultrafiltration of undiluted and diluted stored urine

    Urine ultrafiltration (UF) was studied in terms of flux, permeability, resistance and fouling. Two types of samples were used: stored urine representing the feedstock obtained from urine diversion dry toilets; and diluted stored urine representing the feedstock obtained from urinals. Three different filtration experiment sets were adopted in this study. For the first case, pressure was set in ...


    By IWA Publishing

  • Antimicrobial Action of BiOn

    Bi-On is an air filtration media used in fruit and vegetable sold storage to eliminate harmful volatile compounds, especially ethylene, and sanitize the air. The filtration media is composed of potassium permanganate, its active ingredient, and natural clays. Potassium permanganate is a chemical compound which is widely known for its oxidizing and disinfectant properties. It is used in the ...


    By Bioconservacion SA

  • Treatment of leather industrial wastewater via combined advanced oxidation and membrane filtration

    The liming/unhairing operation is among the important processes of the leather industry. It generates large amounts of effluent that are highly loaded with organic hazard wastes. Such effluent is considered one of the most obnoxious materials in the leather industry, causing serious environmental pollution and health risks. The effluent is characterized by high concentrations of the pollution ...


    By IWA Publishing

  • Removal of Giardia spp. and Cryptosporidium spp. from water supply with high turbidity: analytical challenges and perspectives

    Giardia and Cryptosporidium species are a serious problem if present in water supplies. The removal of these protozoans and the adaptation of existing protocols are essential for supplying drinking water to developing countries. Considering this, the aim of this study is to evaluate, on a bench level, the removal of Giardia spp. cysts and of ...


    By IWA Publishing

  • Innovative horizontal reactor - case study

    AVA was recently able to present a newly developed horizontal reactor for laboratory operation. After comprehensive tests at the technology centre, a special machine type was developed for the purpose of drying powdery raw materials for filter elements. The high-tech filter elements are manufactured as end-products for usage in diverse industrial applications. The challenge in the development ...


    By AVA - Huep GmbH u. Co. KG

  • Laboratory-scale membrane up-concentration and co-anaerobic digestion for energy recovery from sewage and kitchen waste

    This study assessed an alternative concept for co-treatment of sewage and organic kitchen waste in Vietnam. The goal was to apply direct membrane filtration for sewage treatment to generate a permeate that is suitable for discharge. The obtained chemical oxygen demand (COD) concentrations in the permeate of ultrafiltration tests were indeed under the limit value (50 mg/L) of the local ...


    By IWA Publishing

  • Comprehensive understanding of nano-sized particle separation processes using nanoparticle tracking analysis

    The understanding of nano-sized particle separation processes has been limited by difficulties of nanoparticle characterization. In this study, nanoparticle tracking analysis (NTA) was deployed to evaluate the absolute particle size distributions in laboratory scale flocculation and filtration experiments with silver nanoparticles. The results from NTA were consistent with standard theories of ...


    By IWA Publishing

  • Comparative analysis on the effectiveness of various filtration methods on the potability of water

    This paper comparatively assessed the effectiveness of potable water filtration methods, commonly used in the hinterlands in some Ghanaian communities. Physico-chemical and microbiological analysis were carried out on pond, dam and river water samples, using spectrophotometric, pour plate count and the most probable number (MPN) methods. For the unfiltered water samples the total dissolved ...


    By IWA Publishing

  • Long-term effect of a simple storage protocol on fluorescence fingerprint of dissolved organic matter

    Fitting a pre-established region-specific Parallel Factor Analysis (PARAFAC) model to new dissolved organic matter (DOM) samples has become a popular approach in DOM studies. A key step during the development of the pre-established model is to identify the fluorescence fingerprint, i.e. the number of fluorescent DOM (FDOM) components as well as their excitation and emission spectral features. ...


    By IWA Publishing

  • Cryptosporidium genotypes and subtypes distribution in river water in Iran

    Little is known about the diversity and public health significance of Cryptosporidium species in river waters in Iran. In the present study, we determined the genotype and subtype distribution of Cryptosporidium spp. in river water samples in Iran. A total of 49 surface water samples were collected from rivers and surface water in Guilan and Tehran provinces during ...


    By IWA Publishing

  • Experimental study on non-woven filamentous fibre micro-filter with high filtration speed

    A laboratory study was undertaken to pursue the filter performance of a micro-filter module employing highly porous fibre media under a high filtration rate (≥1,500 m/day), faster than that of any conventional filter process. The effects of filtration rate, head loss, raw water turbidity, and filter aid chemicals on filter performance were analysed. In spite of the extremely high ...


    By IWA Publishing

  • Filtration effects of zebra mussels on pathogens and total bacterial burden in the Odra Lagoon (South Baltic)

    As a result of their mode of filter feeding, zebra mussels (Dreissena polymorpha Pall.) have been observed to purify natural water bodies and in vitro. Therefore, the possibility of using zebra mussels for water purification was investigated in a slightly brackish water body of a large lagoon. In this study, water samples were taken above, near and at distance from zebra ...


    By IWA Publishing

  • How can I detect Nitrite in meat

    In Europe many meat products like ham and smoked pork chop are cured. Curing is a process to preserve meat and sausages by addition of common salt. The meat develops a typical curing taste and becomes red in color. This process is important to avoid a grey coloration and a growth of microorganisms. However the reaction of nitrite with amino acids, can cause the formation of carcinogenic ...


    By Camlab Limited

  • Treatment of eutrophic lake water and phosphorus recovery by reusing alum sludge and/or wood

    Treatment of eutrophic lake water was investigated, when alum sludge and/or wood were used as the media for laboratory-scale filtration. Process 1 consisted of Column 1 with wood and Column 2 with alum sludge in series, and Process 2 of Column 3 with alum sludge. The filtration velocity was 0.45 and 0.91 m/d for 49 days each. Both processes removed suspended solids and total phosphorus well ...


    By IWA Publishing

  • Surveillance of human and swine adenovirus, human norovirus and swine circovirus in water samples in Santa Catarina, Brazil

    The purpose of the present study was to evaluate the contamination of different water sources (drinking, surface and groud waters) used for human and animal consumption by PCV2, PAdV, HAdV and NoV GI and GII, in in the city of Concórdia, located in southern Brazil. The presence of genetic material of PAdV and PCV2 was respectively detected in 30% and 45% of the 36 samples analyzed. NoV was ...


    By IWA Publishing

  • A molecular imprinted polymer based sensor for measuring phosphate in wastewater samples

    Phosphate detection in water samples is still completed using colorimetric standard methods, which have a number of disadvantages, to such as being time consuming, requiring filtration, a number of different reagents, frequent calibration and proper disposal of waste chemicals generated. Hence, a simple cost effective analytical method and instrumentation is highly desirable to aid the ...


    By IWA Publishing

  • Determination of PAH in food

    Customer: Food and Feed Governmental lab., France France is divided into administrative regions and each region has its governmental lab. These labs analyze food products to check their compliance with the legal regulations, and to make sure that the products are not hazardous to health. Application: Determination of PAH in food Due to the guidelines ot ...


    By B√úCHI Labortechnik AG

  • Reduction of bacteriophage MS2 by filtration and irradiation determined by culture and quantitative real-time RT–PCR

    Molecular methods are increasingly applied for virus detection in environmental samples without rendering data on viral infectivity. Infectivity data are important for assessing public health risks from exposure to human pathogenic viruses in the environment. Here, treatment efficiencies of three (drinking) water treatment processes were estimated by quantification of the indicator virus ...


    By IWA Publishing

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