contaminant emissions Articles
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Potential repercussions of a mercury ban on the artisanal and small-scale gold-mining sector: a viewpoint
The ban imposed on exports of mercury from Europe and North America is a decision made in response to growing recognition that contamination from extensive emissions of the element in developing countries needs to be tackled more proactively. Stemming its flow to Artisanal and Small-scale gold Mining (ASM) – the largest user and emitter of mercury – has been identified as a key objective of the ...
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Contamination levels assessment of heavy metals in road dust deposited in various types of urban traffic: a case study of Hassi Messaoud City (Algeria)
This study identified the levels and sources of heavy metal contamination in road dust from busy traffic areas in Hassi Messaoud, Algeria. A total of 13 sampling sites, including three traffic rotaries, tow highways, three downtown areas, four circulation roads and one background area, were selected for this study. The contamination levels of the heavy metals in the road dust were evaluated ...
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Are your Candle Filters Stacking Up?
I recently received a call from a sulfuric acid plant operator that sounded a big alarm - as in the plant was in danger of violating environmental output regulations if an issue could not be resolved quickly. And, to top it off, he was asking me to help troubleshoot a competitor’s candle filter that a contractor had installed. You’re probably wondering why he was calling me and not ...
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Relationship between trace elemental composition in Fraxinus pennsylvanica bark and the incidence of some respiratory diseases in Cordoba, Argentina
In order to evaluate the use of Fraxinus pennsylvanica as a biomonitor of trace elements and to investigate their relationship with the incidence of some respiratory diseases in children, bark samples of F. pennsylvanica were collected at ten sampling sites near healthcare centres in Cordoba city, Argentina, and analysed by Total Reflection X-ray Fluorescence with synchrotron radiation. Factor ...
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Assessment of riverine load of contaminants to European seas under policy implementation scenarios: An example with three pilot substances
An evaluation of conventional emission scenarios is carried out targeting a possible impact of EU policies on riverine loads to the European seas for three pilot pollutants: Lindane, Trifluralin and Perfluorooctane sulfonate (PFOS). The policy scenarios are investigated to the time horizon of year 2020 starting from chemical specific reference conditions and considering different types of ...
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Open Burn/Open Detonation
Introduction: Open burn (OB) and open detonation (OD) operations are conducted to destroy excess, obsolete, or unserviceable (EOU) munitions and energetic materials. In OB operations, energetics or munitions are destroyed by self-sustained combustion, which is ignited by an external source, such as flame, heat, or a detonation wave. In this case, an auxilliary fuel may be added to initiate and ...
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Simulating organic pollutant flows in urban stormwater: development and evaluation of a model for nonylphenols and phthalates
Stormwater-quality models can be useful tools for predicting pollutant loads and identifying sources of contamination. Most models in current use handle pollutants such as metals, nutrients and suspended solids, whereas models including emerging organic contaminants are rare. This study aims at developing and evaluating a model for simulating stormwater flows of two groups of organic pollutants; ...
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Data Requirements Air Emissions/Off-Gases
Predictive modeling may be usefelected to represent the system (e.g., SVE treatment, incinerator, etc.), and site and contaminant informaul in estimating emissions from a site or treatment system. An appropriate theoretical model is stion is used to estimate gross emissions. Because many variables affect emission rates, this approach is limited by the representativeness of the model and by the ...
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The Hazards of Being in a Beauty Salon
There are many health risks associated with the beauty industry due to the chemicals found in the products. We are all affected by these chemicals every time we go to the beauty salon. Many of the products found in these salons are classified as hazardous and extreme caution should be taken into consideration when using these products. They’re made for professional use only; therefore, ...
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How to Choose Harmless Fire Brick
When it comes to selecting fire bricks for your elevated-temperature applications, it's important to prioritise not only their performance but also their impact on health and the environment. Fire bricks, also known as refractory bricks, are designed to withstand extreme heat and provide insulation and structural support in industrial settings. However, some fire bricks contain harmful substances ...
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Quality standards of the output fractions after the material specific treatment
The modern era of waste management did not begin in Germany until the mid-1960s. At that time the federal government established the legal basis for proper waste disposal which designated local communities responsible for the disposal of waste. In October 1965 the “Central Office for Waste Disposal” was founded by the federal government and the states (BILITEWSKI et al. 1997). Until the end of ...
By ORBIT e.V.
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Case study - Oxidizer system optimization
OXIDIZER SERVICE SERIES: PART 4 As promised, this is the fourth installment of Anguil's Oxidizer Service Series. If you have read through the first three parts, this can be seen as a capstone of those efforts. Having a strong oxidizer service plan, backed up with recommended spare parts and all of the proper documentation will not only improve your system performance but also allow you to focus ...
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MicroLab Series – Fully Automated Oil Analyzer
Introduction The MicroLab 1 is a fully automated, bench-top analyzer specifically designed for the analysis of oil samples to provide comprehensive analytical and diagnostic results of engine, generator, gearbox, hydraulics, power steering and transmission fluids. The MicroLab was developed to bring oil analysis capability to any company that maintains equipment and seeks to improve their overall ...
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Using ASHRAE Indoor Air Quality Guide
In the 1970s, the approach to energy efficiency compromised Indoor Air Quality (IAQ). Efforts should concentrate on net-zero energy buildings that do not repeat past mistakes. Forums have discussed sustainable buildings concentrating on energy use. Indoor air quality and its effect on health should factor into building design. IAQ has worked with ventilation standards such as the American Society ...
By AKCP
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Evaluation of total particulate matter emission factors for copper slag in dry abrasive blasting
Abrasive blasting was performed in enclosed conditions to evaluate the effect of blast pressure, feed rate and surface contamination on Total Particulate Matter (TPM) emission factors for copper slag. Stack sampling methods were used to collect uncontrolled TPM. Emission factors were calculated as grams of TPM emitted per pound of copper slag used (g/lb) and grams of TPM emitted per square foot ...
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Pellets from biomass power machine vs other gas
With the increase of society's demand for energy, the storage of fossil energy is significantly reduced. Power mining and also coal burning emissions are just one of the major aspects that trigger environmental pollution. For that reason, the development as well as use new energy has actually turned into one of the essential jobs of current social growth. Under this trend, the ...
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Criteria and Air-Toxic Emissions from In-Use Automobiles in the National Low-Emission Vehicle Program
The U.S. Environmental Protection Agency (EPA) implemented a program to identify tailpipe emissions of criteria and air-toxic contaminants from in-use, lightduty low-emission vehicles (LEVs). EPA recruited 25 LEVs in 2002 and measured emissions on a chassis dynamometer using the cold-start urban dynamometer driving schedule of the Federal Test Procedure. The emissions measured included ...
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Bioaugmentation is a cost-effective and sustainable remediation alternative
Selecting a remediation alternative that is compatible with the natural soil and ground water conditions is not only a more sustainable approach, but leads to significant savings. Comparison between bioaugmentation and other remediation methods in the five recognized sustainability criteria demonstrates the advantages of bioaugmentation. While this paper is nota complete quantitative analysis, it ...
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Solar Detoxification
Introduction: In this process, vacuum extraction is used to remove contaminants from soils. After condensation, contaminants are mixed with a semiconductor catalyst such (e.g., titanium dioxide), and fed through a reactor which is illuminated by sunlight. Ultraviolet light activates the catalyst, which results in the formation of reactive chemicals known as 'radicals'. These radicals are ...
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Environmental Benefits of Manure Dewatering Machines
The agricultural sector plays a pivotal role in providing food and resources to sustain human life. However, it also contributes significantly to environmental challenges, including water pollution, greenhouse gas emissions, and soil degradation. Livestock farming, in particular, generates vast quantities of manure, which can have detrimental effects on the environment if not managed properly. ...
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