mineral analysis Articles

XRF pellet preparation for mined mineral analysis

Sample heterogeneity affects the accuracy and repeatability of many X-Ray Fluorescence (XRF) measurements. Consistent sample preparation is required for measurements that are fully representative of the whole sample composition. The mineral mining industry has a need for several different measurements at different stages of the recovery process, and the sample preparation required will vary. ...

Jun. 1, 2017

By Specac Limited
Measuring sustainable development in industrial minerals mining

This paper presents a set of SD indicators for mining with a specific focus on the extraction of industrial minerals. The proposed metrics are based on the International Council of Mining and Metals 10 SD Principles and are organised into a mining life cycle framework that includes four stages: 1) exploration and mining; 2) processing; 3) transportation and logistics; 4) markets. The goal of the ...

Jan. 30, 2014

By Inderscience Publishers
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Exergy analysis of hydrocarbons mixture refrigerants R436A and R436B as a drop in replacement for R134a with TiO
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The refrigerator exergy efficiency (EE) with nanoparticles in the working fluid was investigated experimentally. Mineral oil (MO) with TiO2 nanoparticles mixtures were used as the lubricant instead of Polyol ester (POE) oil in the R134a, R436A (R290/R600a–56/44–weight %) and R436B (R290/R600a–52/48–weight %) refrigerator. The results indicate that R134a, R436A and R436B and MO with TiO2 ...

May 28, 2013

By Inderscience Publishers

Degradation of malachite green by dielectric barrier discharge plasma

Oxidative decomposition of aqueous organic pollutant malachite green (MG) was studied in a dielectric barrier discharge reactor operated under ambient conditions. Total organic carbon content analysis confirmed the mineralization of the pollutant leading to the formation of carbon dioxide, which was confirmed by an infrared analyzer. Typical results indicated that the degradation rate increases ...

Feb. 18, 2013

By IWA Publishing

Use of talc as low-cost clarifier for wastewater

Talc is proposed as a low-cost mineral for wastewater clarification. In this sense, adsorption of methylene blue (MB) from aqueous solutions was studied comparatively by using sepiolite (qualified as very good adsorbent) and two talc samples with different particle size and purity degree. The MB adsorption was assessed by determining remnant dye in the supernatant using UV–vis ...

Feb. 19, 2014

By IWA Publishing

TiO2 as an effective nanocatalyst for photocatalytic degradation of humic acid in water environment

Photocatalysis with TiO2 is used to remove humic acid (HA) in a water environment under UVA and UVC light. The effects of operating parameters, including light intensity, HA concentration, catalyst dose, and contact time are investigated at neutral pH conditions. Results show that HA degradation increases with increasing contact time and light intensity and decreases with increasing HA ...

Dec. 28, 2016

By IWA Publishing

Risk assessment as a tool to explore sustainable development issues: lessons from the Australian coal industry

Risk assessment is a familiar tool in the minerals industry. Originally introduced to explore areas of safety and health in the workplace, the tool is now increasingly used by the industry in other areas such as environmental management. As the industry grapples with the concept of sustainable development, risk assessment represents a potentially useful methodology to engage operations with the ...

Jun. 19, 2007

By Inderscience Publishers

Photodegradation of chlorpyrifos in water by UV/H₂O₂ treatment: toxicity evaluation

Chlorpyrifos (CP) is an organophosphorus pesticide widely used in agriculture. Due to its toxicity, it has been necessary to develop a treatment to eliminate the environmental wastes generated by this substance. The combination of UV radiation and hydrogen peroxide seemed an interesting option to reduce the concentration of CP in water, as it has proved to be a simple and effective method to ...

Nov. 29, 2013

By IWA Publishing

Qualitative and Quantitative Analysis of Seafood by EDXRF

X- ray fluorescence analysis, in addition to its effectiveness in analysis of inorganic materials such as metals and ceramics, is also effective for the detection and quantitative analysis of minerals and heavy metals in foods. Not only can samples be analyzed directly without conducting time-consuming pretreatment, sensitive and accurate measurement is also possible using simple preparation ...

Mar. 31, 2014

By Shimadzu Scientific Instruments Inc

Determination of effective cation exchange capacity and exchange acidity by a one-step BaCl2 method

Routine laboratory procedures measure effective cation exchange capacity (ECEC) and exchangeable acidity (EA) using separate extractants. This study assessed the suitability of a one-step BaCl2 extraction for the analysis of both ECEC and EA on organic and mineral soils by comparing results to those of a multi-step BaCl2 extraction already in use by Europe's International Cooperative Programme ...

Mar. 11, 2009

By Soil Science Society of America (SSSA)

Determination of sand content in digestate

The biological treatment of separate collected waste becomes more and more important. The composting is still the dominant method of treating this waste, but the anaerobic alternative, the anaerobic digestion, plays an increasing part. In Germany already 15% of the whole capacity of biological treatment plants for separate collected biowaste are of anaerobic digestion (Kern, 1998), because of its ...

Jan. 2, 1999

By ORBIT e.V.

News on Food 2013, Volume 2: Simplify Sample Prep, and Increase Speed and Sensitivity

Analytical testing is used 1) to determine nutritional value and quality and 2) to ensure food safety and security. We have developed and continue to develop, specialized products that allow food analysts to simplify sample prep, and increase speed and sensitivity for many food and beverage applications. In this second issue of “News On Food”, we will focus on our continuously ...

Feb. 13, 2014

By MilliporeSigma

Macrolide antibiotics removal using a circulating TiO2-coated paper photoreactor: parametric study and hydrodynamic flow characterization

The present work investigates the photocatalytic degradation efficiency of biorecalcitrant macrolide antibiotics in a circulating tubular photoreactor. As target pollutants, spiramycin (SPM) and tylosin (TYL) were considered in this study. The photoreactor leads to the use of an immobilized titanium dioxide on non-woven paper under artificial UV-lamp irradiation. Maximum removal efficiency ...

Feb. 22, 2016

By IWA Publishing

XRF Fusion Beads for Cement Analysis | Spectroscopy Solutions

The chemical composition of cement influences performance. Elemental analysis can determine the quality of a cement and indicate which applications it is best suited to. XRF is the elemental analysis method of choice in the cement industry. This article outlines the best preparation method, using a Nieka Fusion Fluxer, supplied by Specac, for the XRF analysis of cement. Specac only provides the ...

Mar. 23, 2018

By Specac Limited

MSITU Raman spectroscopy of cave minerals: an analytical tool compatible with the conservation of subterranean heritage

Introduction: Up to 380 different minerals have been described in caves over the past century [1]. The presence of particular mineral phases has been used as indicators of specific paleoenvironmental conditions occurred in caves [2, 3]. On the other hand, processes involved in the genesis of some cave minerals have been proposed as potential analogs of minerogenetic mechanisms occurred during the ...

Jan. 1, 2014

By B&W Tek

Analysis of Highly Mineralized Aqueous Solutions by ICP-AES

Environmental Inductively Coupled Plasma (ICP) methods, such as EPA 200.7 or SW846 Method 6010, expect that samples will be fairly dilute without an overabundance of dissolved constituents (less than 2000 ppm Total Dissolved Solids). Laboratories running mine-impacted waters, such as acid rock drainage from exposed copper tailings, or mineral digests of a “waste” sample (that is ...

Apr. 6, 2016

By Shimadzu Scientific Instruments Inc

Evaluation of Mineral Supplements for Content and Purity by Flame / Graphite Furnace AAS

Doctors, dieticians and health officials recommend a balanced diet that provides essential minerals for proper nutrition in the human body. The accurate analysis of metals in vitamin / mineral preparations and food supplements is very important. These metals can be classified into several groups – the major electrolytes (Na, K, Ca, Mg), crucial to normal primary physiological processes ...

Jan. 1, 2006

By Buck Scientific Inc

Adsorption of Trihydroxamate and Catecholate Siderophores on -iron (Hydr)oxides and their dissolution at pH 3.0 to 6.0

The adsorption of desferrioxamine (DFOB), acetyl desferrioxamine (DFOD1), and a catecholate derivative (DFOMTA)] on goethite (-FeOOH) and hematite (-Fe2O3) and mineral dissolution behavior at pH 3.0 to 6.0 were studied to yield an understanding of the mechanisms of siderophore complexation on phases and also to study how variations in siderophore molecular structure, as modified by proton ...

Sep. 30, 2008

By Soil Science Society of America (SSSA)

Geochemistry exploration environment analysis of waters: the case of the basin of the Great Sebkha of Oran

Water resources are economically and environmentally the most valuable for countries affected by aridity. This study is to identify the factors influencing the quality of the waters of the aquifer system of the Great Sebkha of Oran, one area that is already in a stress situation. The determination of the origin of the salinity of the waters was approached from an analysis of the chemical ...

May 23, 2017

By IWA Publishing

Volumetric Analysis & Three-Dimensional Visualization of Industrial Mineral Deposits

Abstract Base and precious metal deposits are typically characterized by a single parameter such as the total weight of mineable gold. Industrial mineral deposits, on the other hand, are characterized by their end-use. For example, the volumetric evaluation of a limestone deposit depends upon who’s buying the product. The concrete industry has a suite of evaluation parameters such as silica ...

Mar. 23, 2018

By RockWare, Inc.

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