kjeldahl-n Articles

  • Examining the benefits of HDPE geomembrane

    Comparing various geomembranes for your next geosynthetic application? Don’t overlook high-density polyethylene (HDPE) geomembrane. HDPE has been in use for decades and during that time a number of studies have been conducted to test its longevity and ability to meet environmental sustainability project requirements. Here, we explore some of those studies to examine the benefits of HDPE ...


    By Agru America, Inc.

  • DESMI Pumps for HVAC in Sharjah, UAE - Case Study

    DESMI has supplied a series of eight NSLH End Suction Centrifugal Pumps for the Umm Al-Qura building located in Sharjah at the Al Mamzar beach. The NSLH pumps will be providing 198 differently sized apartments with cooling. The residential building has 22 floors + 5 floors for car ...


    By DESMI A/S

  • What`s the Best Air Pollution Control Technology for My Process?

    Air pollution control equipment is not something that business owners address by saying, “Let’s do the right thing for the environment and install an oxidizer!” In fact, the scenario is more likely to be “We need to increase productivity (always a good thing!), but that will put us over our annual emissions limits. Do we know what we will need? Where do we start? Who can ...

  • Transformational adaptation – when climate change means business as usual is no longer possible

    1. A lesson from the past Deep in the central Sahara, a crumbling mud-brick town sits at the edge of a dry lake bed. This is the medieval town of Germa, in southwestern Libya, one of a string of settlements along the Wadi al-Ajal, a valley defined by the towering dunes of the Ubari Sand Sea to the north, and the black cliffs of the Messak Settafet plateau to the south. Germa is romantic ...


    By Garama 3C Ltd

  • Sludge Blanket Level Detection – making new process opportunities possible

    Much Pulsar's Self-Cleaning Viper Sludge Sensor of the demonstrating the effective maintenance-free solution. discussion around the way we deal with sewage sludge – the way it is moved around the process, the bellmouth valves and decant processes, the downstream treatment of the liquors, important issues around TOTEX and discharge Compliance, plus more recently the ...

  • What is Indoor Air Quality?

    Indoor Air Quality (IAQ) refers to the degree of air purity inside buildings that constitute the usual environment in which people carry out activities (offices, homes, schools, shopping and leisure centres, etc.) Because of increasing urbanisation and our contemporary lifestyle, most people spend a large proportion of their time in these closed environments. The high level of atmospheric ...


    By Bioconservacion SA

  • F4 Spill In Situ Bioremediation Applications

    F4 Completed an in situ water bioremediation program of Bio-ReClaim in northern Alberta; a pipeline leaked crude oil over a 14 hectare area in muskeg. Alberta Environment (AEP) allowed the in situ water application of Bio-Reclaim by F4 Environmental. Keeping in mind the application was performed without any ground disturbance and extremely cost effective compared to the ...


    By F4 Environmental Inc.

  • Using Electromagnetic induction to characterize soils - Case Study

    Electrical conductivity measurements have been used for years to determine salinity and moisture in soils. Probes were inserted directly into the soil to determine how well the soil conducted an applied current. This process was slow and labor-intensive and was usually reserved for scientific studies. A more recent technique for measuring conductivity is electromagnetic induction (EM), a ...


    By Geonics Limited

  • From Drought To Flooding: California Struggles With Turnaround

    In a drastic about-face, California has gone from historically desperate drought conditions to an inundation of water that has brought its own set of problems.  In one indicator of the dramatic difference, snowpack on the Sierra mountains recently measured 135 percent of its seasonal average. “We haven’t seen an event of this magnitude in at least a decade,” Mike ...


    By KLa Systems, Inc.

  • CEA LASE laboratory uses Kartotrak to map radionuclides difficult to measure

    Problematics The autoradiography technique consists in depositing sensitive screens collecting the radiation on facility floors, ceilings or walls during different exposure times ...


    By Geovariances

  • The Clog Blog

    Clogging and over pressuring are definitely problematic for Liquid Chromatography columns. Back in 2005 John Dolan’s sage advice to chromatographers to make an LC column last forever was simple, “Never open the box!” As John pointed out, this is not practical and I have to agree. But as an LC column manufacturer I have seen remarks from customers regarding clogging as though it ...


    By Restek Corporation

  • Treatment and Disposal of Air Pollution Control Residue

    What is APCr? Thermal waste management using Energy Recovery Facilities (ERFs) is now a well-managed and mature technology that is subject to environmental monitoring by a range of competent international bodies. These ERFs have been established as a means of diverting waste away from landfill disposal and for valorising the material and energy content of the waste. Counter to historic ...

  • Secondary Oil Containment at US Army Corps of Engineers - Big Bend Dam - Case Study

    Big Bend Dam takes its name from the unique bend in the Missouri River seven miles upstream from the dam. Construction of the dam began in 1959 and the embankment was completed in July 1963. Big Bend dam is 95 feet (29 m) high and 10,570 feet (3,220 m) in length. Power generation began at the facility in 1964 and the entire complex was completed by 1966. The hydroelectric plant generates ...


    By Albarrie Canada Limited

  • Does your facility need Zero Liquid Discharge Technology?

    If your industrial facility discharges its waste into deep wells, streams, sewers to publicly owned treatment works (POTWs), and/or other waterways, it is likely there are some types of regulations on discharging the waste. With an increasing push toward environmental protection, many industrial facilities and effluent regulators are strengthening strategies to reduce industrial process waste. ...


    By SAMCO Technologies, Inc.

  • New Bird Netting Means “No Vacancy” for Crows at Hotel - Case Study

    Springhill Hotel in Temecula, California was having a problem with black crows. The birds were building nests, leaving bird droppings on and around the hotel, and creating considerable noise, which disturbed hotel guests. Installation of Bird B Gone Heavy Duty Bird Netting. Issues to be addressed: Prevent large numbers of crows from congregating around the hotel property. The ...


    By Bird-B-Gone, Inc.

  • Stop It Pipe Repair System assists in decommissioning project - Case Study

    Since 1986, InduMar Products Inc. has provided a unique solution with its STOP IT Pipe Repair System. In refineries and chemical plants, where many miles of piping carry products that are often highly flammable, toxic or corrosive, the STOP IT provides a method to restore product and profit flow in minutes instead of the many hours required to cut out a pipe section, fabricate and install a new ...


    By InduMar Products, Inc.

  • How a Specialized Automatic Control Valve Solved Flooding

    The Colombian area of Antioquia creates much of its clean power from hydropower plants along the Guadalupe River. The Guadalupe IV hydroelectric plant generates power with three vertical axis turbines that discharge water below the river level. To prevent flooding, however, the plant needed a solution that ensured the ejector ...


    By Singer Valve Inc.

  • Product stewardship – recycling’s little helper

    Like many veteran recycling professionals, I have faced serious challenges in making the wish of recycling all materials come true.  Although paper, cardboard, cans and bottles have ready markets and collection infrastructure; computers, mattresses and other items did not.  They were the problem items that went into dumpsters because costs and lack of mechanism gave them little chance ...

  • New ways for Metal Recycling

    REWAVE XRF 3-way-sorting in innovative  “Free-Fall”-design Recycling of metal and aluminium knows no limits because it can be remelted as scrap indefinitely. Metals, however have to be separated from non-metallic impurities, and different metals have to be sorted in pure fractions to be used as secondary raw materials substituting primary resources. Especially when it ...

  • Selective nitrogen determination methods related to Kjeldahl

    KjelMaster System K-375 / K-376, KjelDigester K-449, Scrubber K-415 85 % of the world’s nitrogen demand for fertilizer is primarily derived from ammonia in the form of urea, ammonium nitrate, phosphate and sulfate. Ammoniacal components can also be found in soil, sludge and bio waste. In those sample matrices, a mixture of several nitrogen containing compounds as urea, nitrogen from ...


    By BÜCHI Labortechnik AG

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