Surface modification of arsenic sulfide particles for their
1. Introduction. Arsenic exists widely in nature in the form of arsenate, arsenic sulfide, and arsenic oxide. Globally, more than 300 types of arsenic-containing minerals have been found, most of which are toxic (Drahota and Filippi, 2009).In nonferrous metal smelting, the scrubbing of As 2 O 3 and As 2 O 5 in the roaster flue gas will …
IJERPH | Free Full-Text | Hydrothermal Treatment of Arsenic Sulfide
Feature papers represent the most advanced research with significant potential for high impact in the field. A Feature Paper should be a substantial original Article that involves several techniques or approaches, provides an outlook for future research directions and describes possible research applications.
Review on arsenic removal from sulfide minerals: An …
In the bioleaching process of arsenopyrite, arsenic will be dissolved in the form of arsenate. In bioleaching process, a passive film mainly composed of jarosite, elemental sulfur and ferric arsenate will be formed on the surface of the mineral and then inhibit the bioleaching efficiency (Deng et al., 2018b).Since the arsenopyrite itself …
Arsenopyrite Mineral | Uses and Properties
Uses of Arsenopyrite and Arsenic. Arsenopyrite is the primary ore of arsenic metal. The mineral contains approximately 46% arsenic by weight. Arsenic metal is used to produce a variety of alloys. It was historically used to harden lead in ammunition, but this use was nearly eliminated by the late 1900s.
Arsenic | As (Element)
The name derives from the Latin arsenicium and the Greek arsenikos for "masculine" or "male" because the ancients thought that metals were different sexes. Arsenic was known in prehistoric times for its poisonous sulfides. The German scientist and philosopher, Albert von Bollstadt (Albert the Great or Albertus Magnus) is thought to have obtained the metal …
Review on arsenic removal from sulfide minerals: An …
In the bioleaching process of arsenopyrite, arsenic will be dissolved in the form of arsenate. In bioleaching process, a passive film mainly composed of jarosite, elemental sulfur and ferric arsenate will be formed on the surface of the mineral and then inhibit the bioleaching efficiency (Deng et al., 2018b).Since the arsenopyrite itself contains Fe, the …
The application and mechanism of iron sulfides in
1. Introduction. Arsenic is a ubiquitous metalloid element, mainly in the form of different compounds in nature. Arsenic compounds can exist in the soil, sediments, and water and have been characterized as group 1 carcinogens by the International Agency for Research on Cancer (IARC) due to their high toxicity [1], [2].The ecotoxicological studies …
The key role of biogenic arsenic sulfides in the removal of …
The iron content in sediment CB (2635 mg Fe kg −1) was almost five times lower than in sediment CT (Fig. 1 E and F). Based on these data, both sediments may be considered iron-poor as they contained less than 15% (wt.%) of iron (Boggs, 2009).Additionally, more than 40% of iron was associated with the residual fraction in …
(PDF) The rediscovery of sublimed arsenic …
Sublimed (dry process) arsenic sulphide pigments have been of interest since historic and modern samples of yellow, orange or red powders and cakes containing arsenic oxide (As 2 O 3), arsenic ...
Arsenic(V) Sulfide | AMERICAN ELEMENTS
SECTION 1. IDENTIFICATION. Product Name: Arsenic(V) Sulfide Product Number: All applicable American Elements product codes, e.g. AS5-S-02-C, AS5-S-03-C, AS5-S-04-C, AS5-S-05-C CAS #: Relevant …
Synthetic arsenic sulfides in Japanese prints of the Meiji …
A multi-analytical investigation of Japanese woodblock prints ranging in date from 1864 to 1895 and covering essentially the time span between the very end of the Edo period and the middle of the Meiji period showed a widespread use of arsenic sulfides for yellow and green colored areas (the latter obtained by mixing Prussian blue to the yellow …
Effect of speciation and composition on the kinetics and …
In the case of synthetic As(III) wastewater, a molar S:As ratio ≥ 2.5 was required for the complete removal of arsenic (Fig. 1).At a S:As ratio of 1.5, the theoretical equivalent molar ratio between S:As for As(III), only 70% of arsenic precipitated, resulting in residual concentrations of 375 ± 15 mg L −1.At molar S:As ratios ≥ 2.5, arsenic was …
Arsenopyrite
Arsenopyrite is a hard metallic iron arsenic sulfide with steel gray to silver-white color, and the major source of arsenic. The mineral in purest form contains 46.0% As, 34.3% Fe, and 19.7% S, which turns it chemically toxic. The mineral is associated with sulfide orebodies and gold deposits. Arsenopyrite is the major source of arsenic ...
Material Safety Data Sheet
General Information: Use proper personal protective equipment as indicated in Section 8. Spills/Leaks: Vacuum or sweep up material and place into a suitable disposal container. Avoid runoff into storm sewers and ditches which lead to waterways. Clean up spills immediately, observing precautions in the Protective Equipment section.
Arsenic trisulfide | As2S3 | CID 71586773
Acute oral and ip LD50 values of arsenic trisulfide for mice were 254.3 and 215.1, and for rats 185.0 and 85.8 mg/kg, respectively. The dermal LD50 was 936.0 mg/kg for rats. The threshold of acute toxicity was 0.05 LD50 for rats. A single application to eye caused severe keratoconjuctivitis leading to blindness.
Arsenic(II) sulfide 95
Aldrich - 519111; Arsenic(II) sulfide 95%; CAS No. ; catalyst | Find related products, papers, technical documents, MSDS & more at Sigma-Aldrich
Realgar and Orpiment
Realgar and orpiment are very similar minerals. They are both arsenic sulfides and members of the monoclinic crystal system. They form in the same geological environments and can be closely associated in the …
CAS Common Chemistry
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Arsenic | Definition, Symbol, Uses, & Facts
Commercial production and uses. Metallic arsenic forms when arsenopyrite is heated at 650–700 °C in the absence of air. The arsenic in arsenopyrite and the arsenic impurities in other metal ores …
How Does Arsenic Get into the Groundwater?
If the arsenic is not soluble, it will precipitate and remain in the solid phase of the groundwater system as part of the soil. If there is a binding site on the soil surface that is available, and the arsenic is in a form that binds strongly, it will also leave the water phase and attach to the soil. So for most types of arsenic, they'll ...
Arsenic | Medical Management Guidelines | Toxic Substance …
General Information Description. Arsenic compounds exist in a number of inorganic and organic forms. This Medical Management Guideline focuses on arsenic trioxide (As 2 O 3), one of the most toxic and prevalent forms.Other inorganic arsenic compounds may vary somewhat in relative toxicity, and organic arsenic compounds appear to be essentially …
Arsenic(V) sulfide 99.99
Aldrich - 519103; Arsenic(V) sulfide 99.99%; CAS No. ; Arsenic pentasulfide | Diarsenic pentasulfide; catalyst | Find related products, papers, technical documents, MSDS & more at Sigma-Aldrich
Chemistry and Mineralogy of Arsenic
INTRODUCTION Arsenic is an elusive element, with a mysterious ability to change color, behavior, reactivity, and toxicity. For exam-ple, two arsenic sulfide minerals, red-colored realgar (As
Arsenic
Arsenic was known to the ancient Egyptian, and is mentioned in one papyrus as a ways of gilding metals. The Greek philosopher Theophrastus knew of two arsenic sulfide minerals: orpiment (As 2 S 3) and realgar (As 4 S 4).The Chinese also knew about arsenic as the writings of Pen Ts'ao Kan-Mu.
Sulfur being an overlooked promoter of groundwater arsenic
Sulfur´s role in groundwater arsenic contamination is less clear than that of iron. Microbial sulfate reduction coupled to organic carbon oxidation produces sulfide which can sequester arsenic ...
Arsenic(II) sulfide | As2S2 | CID 3627253
Serious eye damage/eye irritation - Category 2 . Carcinogenicity - Category 1A . Reproductive toxicity - Category 2 . Specific target organ toxicity - Single exposure - Category 1 (digestive system, circulatory …
Arsenic sulfide | As2S3 | CID 61569
Arsenic sulfide | As2S3 | CID 61569 - structure, chemical names, physical and chemical properties, classification, patents, literature, biological activities, safety ...
Arsenic (II) sulfide
Formula: As 2 S 2. Molecular weight: 213.973. CAS Registry Number: . Information on this page: Notes. Other data available: Phase change data. Options: Switch to calorie-based units.