antimony role in various processes of plant

Antimony (Sb) - Chemical properties, Health and Environmental effects

Antimony occurs naturally in the environment. But it also enters the environment through several applications by humans. Antimony is an important metal in the world economy. Annual production is about 50.000 tonnes per year, with Xinhai materials coming mainly from china, Russia, Bolivia and South Africa. World reserves...

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Soil antimony pollution and plant growth stage affect the biodiversity ...

A total of 4512 rhizobacteria were isolated at three stages of plant growth from Achillea ageratum colonizing a polluted site with an antimony concen. ... Certain plants have the ability to grow on heavy-metal-contaminated soils, and some of them can accumulate heavy metals, which have no known biological function [6].

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Antimony bioavailability - Semantic Scholar

tors influencing the transfer of Sb in the soil–plant system appears as an important goal. Earthworms are known to play a key role in metal(loid) bioavailability in soils [41], as do mycorrhizal fungi, which are used as biofertilizers in current agriculture practices [42]. Both interact with different soil compartments (i.e., transfer...

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Soil antimony pollution and plant growth stage ... - Semantic Scholar

isolates into 51 clusters, one of which was numerically predominant and present throughout plant development and at all antimony ... Keywords: Plant growth-promoting rhizobacterium; Auxin production; Heavy metal; Achillea ageratum L.; Antimony pollution; Biodiversity. 1. Introduction ... role in the phytoextraction process.

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Antimony in the environment: Lessons from ... - DIM-UChile

Nov 26, 2009 ... a b s t r a c t. The distribution of Sb in a variety of sample materials, including soils, plants and surface water, was stud- ... ing the impact and relative importance of geogenic vs. anthropogenic Sb sources. ... Different sample materials can reflect different geochemical sources and processes, even when col-.

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Antimony - Wikipedia

Alloys of lead and tin with antimony have improved properties for solders, bullets, and plain bearings. Antimony compounds are prominent additives for chlorine and bromine-containing fire retardants found in many commercial and domestic products. An emerging application is the use of antimony in microelectronics.

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Effects of antimony on redox activities and antioxidant ... - PLOS

Sep 5, 2017 ... The plants were grown hydroponically with different concentrations of Sb, a heavy metal which reduces biomass production and growth. ... This oxidative stress affects both the phenolic and the ROS/RNS metabolic processes, which seems to implicate their involvement in the plant's defence and response...

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Effects of antimony on redox activities and antioxidant ... - NCBI - NIH

Sep 5, 2017 ... The plants were grown hydroponically with different concentrations of Sb, a heavy metal which reduces biomass production and growth. ... This oxidative stress affects both the phenolic and the ROS/RNS metabolic processes, which seems to implicate their involvement in the plant's defence and response...

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Comparison of Antimony Behavior with that of Arsenic under Various ...

XAFS analyses of Sb and As are also consistent with this finding. Under reducing conditions, the concentration of As in the soil water increased whereas that of Sb decreased in both the Ichinokawa and laboratory systems. This suggests that this contrasting behavior is controlled mainly by the different redox properties of Sb...

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Antimony (Sb) and Arsenic (As) in Sb Mining Impacted Paddy Soil ...

Feb 6, 2012 ... Foods produced on soils impacted by antimony (Sb) mining activities are a potential health risk due to plant uptake of the contaminant metalloids (Sb) and arsenic (As). Here we report for the first time the chemical speciation of Sb in soil and porewater of flooded paddy soil, impacted by active Sb mining,...

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Antimony Compounds - EPA

People who work in industries that process antimony ore and metal, or make antimony oxide, may be exposed to ... alterations in pulmonary function, chronic bronchitis, chronic emphysema, inactive tuberculosis, pleural adhesions, and ... exposed to various antimony compounds in a metallurgical plant. However, the study...

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Campine - Process

Campine: lead, antimony and flame retardant masterbatch solutions. ... Our production process is a robust and environmentally friendly closed-loop process. Campine plant. Our production capacity is large, with backup installations for each production step to guarantee production continuity in all circumstances. We operate...

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Distribution, speciation and availability of antimony (Sb ... - CiteSeerX

Antimony. Sb mining soil. Ca[Sb(OH)6]2. Sequential extraction. Plant uptake. a b s t r a c t. Here, we present one of the first studies investigating the mobility, solubility and ... Methylated Sb species may also play a role in soil depending .... Modified sequential extraction procedure for soil samples (after Wenzel et al., 2001).

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Importance of Noncrystalline Hydroxide Phases in Sequential ...

It extracted 30 to 47% of Sb, indicating the importance of this fraction, which may be mobilized in the floodplain by acid sulfate soil processes and periodic waterlogging. The original method overestimated P, As, and Sb in the residual fraction (30–71%). Relative efficiency values of extracts for P, As, and Sb were compared,...

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Processing of Antimony at the Sunshine Mine (PDF Download ...

Feb 9, 2018 ... A plant was initially constructed as a primary antimony source during World War II. This facility also decreased the ... Specifically, the relevant process chemistries involved in concentrate Ieaching, metal electrowinning, and sodium antimonate production will be discussed. In addition, ongoing areas of...

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Implementation of Thermal Processes for Feedstock Recycling of ...

Nov 1, 2000 ... In this report thermal processes were evaluated for their suitability for the feedstock recycling of bromine and antimony, with energy recovery, from WEEE. The processes of Austrian Energy,. ALSTOM/Ebara, Von Roll RCP, and Gibros PEC were evaluated in detail with the defined criteria. All four processes...

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Influence of silicon on maize roots exposed to antimony-growth and ...

Aug 27, 2014 ... It was shown that application of silicon (Si) can decrease the toxicity of other heavy metals and toxic elements in various plants. ... of Si has been observed on root length and biomass, changes in the oxidative response of plants exposed to Sb indicate a possible mitigation role of Si on Sb toxicity in plants.

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Occupational exposure to antimony compoundsw - RSC Publishing

process workers. There have been relatively few of these, and few studies of possible symptoms have been made. Antimony sulfide imported from, at different times, China, ... The full importance of environmental antimony has still to be determined, and evidence of specific ..... Workers in an adjacent zircon plant were also.

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Sb – Antimony

form. Antimony can be used as a pathfinder element for Au mineralisation, especially in combination with other pathfinders such as As and Bi (Boyle 1974, Plant et al. 1989, 1991). During magmatic processes Sb can substitute for Fe in minerals such as olivine and ilmenite, but it tends not to be preferentially enriched at any.

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1 ISOLATION AND INVESTIGATION OF ANTIMONY-RESISTANT ...

bacterial cultures which had played a role in the biological methylation of antimony compounds in the soils ... bacteria cultures were amended with different antimony compounds (potassium antimonyl tartrate and potassium ..... Organisms that have been shown to accomplish this include plants, bacteria, fungi; and possibly...

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Antimony (Sb) in urban and industrial waste and in waste incineration

This process includes precipitation of heavy metals in the form of hydroxides. Jekel et al. [2, 3] found in 1990 that only 60% of the antimony was removed by ... At present, the Sb concentrations in waste water from incineration plants are between. 2.3 and ..... In this context, the work of Reimann [17, 18] is of great importance.

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Process flow-sheet for gold and antimony recovery from stibnite - Cnr

Keywords: Stibnite; Gold; Antimony; Alkaline pretreatment; Factorial experiments; Cyanidation; Refractory ores. 1. ... of antimony on the gold recovery process. Antimony was recovered as metal from alkaline solution by cathodic electrodeposion: several industrial applica- w .... eters programmable function generator mod.

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Antimony speciation and sorption in soils, sediments and tailings ...

description of the sorption processes of antimony in contaminated soils and sediments is needed. ... different background concentrations, with different antimony species and with various antimony concentra- tions. .... uptake by plants represents the availability of a heavy metal in the soil, while the leaching points show the.

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Comparison of arsenic and antimony biogeochemical behavior in ...

Although similar geochemical behaviors of arsenic (As) and antimony (Sb) in the environment has been assumed and widely reported ... geochemistry of As and Sb in water/fish, soil/vegetable, tailings/plant samples were carried out at the world's ..... again by repeating the digestion and measurement procedure. Fig. 1.

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Antimony diffusion from polyester textiles upon exhaust ... - DiVA portal

Sep 5, 2017 ... commercial importance and in regards to the environmental issues, the industries are ... for each process. After all coloration process, the results about the antimony's presence in waste water haven't shown the same phenomena that have expected. Most of .... procedure in their waste water treatment plant.

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The metallurgy of antimony

The typical separation results are shown in Table 5 and detailed plant flow- sheets and process descriptions may be found in the referenced literature (Xikuangshan Administration of Mines, 1979). In the United States, the last primary producer of antimony was Sunshine Mining & Refining Company. The antimony bearing.

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View Paper

radioactive and elemental antimony from the nuclear steam supply system at all three units. ... plants without the large source of antimony do not have the ... in the process. RESULTS. Alternatives for waste handling were developed and implemented to handle the worst case activity removal es- timates. Special metallic high...

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Antimony in South Africa - SAIMM

Jun 6, 1986 ... Consolidated Murchison Limited is the only primary producer of antimony in South Africa, producing approx- ...... processes for the recovery of gold and antimony. Barren-solution evaporation. Carbon columns. Liquor t. Antimony. Slag. Products plant timony. Thus, in any discussion of current plant prac-.

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Antimony oxide - Environment and Climate Change Canada

human health. Based on the information obtained through the categorization process, the Ministers identified a number of substances as high priorities for action. These include substances that. • met all of the ecological categorization criteria, including persistence (P), bioaccumulation potential (B) and inherent toxicity to...

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US3944653A - Process for preparing high purity antimony trichloride ...

Several processes are generally employed for obtaining antimony or antimony derivatives from antimony sulfide bearing ores. Some basically involve pyrometallurgical methods. One such process involves direct oxidation in which antimony sulfide is converted to volatilized antimony oxide by the reaction: 2 Sb 2 S 3 + 9 O 2...

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THE REMOVAL OF COBALT FROM ZINC ... - Open Collections

removal process. Cementation products obtained from laboratory experiments and plant practice were studied using the SEM. A number of significant findings were ..... The role played by copper and antimony is poorly understood. This project was performed in collaboration with Cominco to examine cobalt purification from.

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Determination of arsenic, antimony, and selenium by FI-HG-AAS in ...

of pesticides, plant desiccants, and wood preserva- tives. Inor ganic arsenic is an ... Also, several natural processes including weathering of rock and soil run-off may be sources of higher antimony con- centrations in the air and waters. The background ... a role in the etiology of other pathologies, such as oxidative stress or...

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Antimony in the Lot-GXinhaine River system - CSIRO Publishing

Jan 24, 2018 ... Both chemical and radio-toxicity of Sb depend on transport and transformation processes at different timescales. ... Solid/liquid partitioning of Sb (average log10 Kd ~ 4.44 l kg-1) suggests a non-negligible role of the Sbd fraction (of which >90% are present as ˂ 0.02 µm filter-passing “truly dissolved” Sb)...

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Umicore | Antimony

Like arsenic, there are various allotropes, one of which, yellow antimony, occurs only at temperatures below –80°C and is liable to explode. ... 15 to 25% Sb. Type metal contains 60% Pb, 20 to 30% Sb and 10 to 20% Sn, but this use has been virtually eliminated as a result of the development of the offset printing process.

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Lead Refining Plant, Lead Refining Technology, Recycled Lead ...

A smelting plant stops at the stage of the fusion-reduction plant; it will produce what is known as hard or Antimonial Lead. If the plant is meant to produce soft Lead, the crude Lead must undergo a refining process. The objective of the refining process is to remove almost all copper (Cu), antimony (Sb), arsenic (As) and tin...

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Antimony Trioxide and Antimony Trisulfide - IARC Monographs

Antimony trioxide is available in several product grades of varyg particle and tint. Ail are of at least 99.0% .... ln a UK plant where antimony ore was procssed, levels of antimony oxide in the air of work areas were ..... cancer had ocurred among antimony process workers in the UK in 1969-71, with 8.0 ex- pected, it was stated...

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Drinking Water Parameters - EPA

contaminated or that the treatment process at the water treatment plant is not operating adequately. 2 ... The toxicity of antimony depends on the form it occurs in (naturally occurring antimony is likely to ... that consumption of arsenic through drinking water is causally related to the development of cancer in several different.

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Antimony - The Risk Assessment Information System

Feb 4, 2005 ... Thus, an Eco-SSL for plants for antimony could not be derived. 4.0. ECO-SSL FOR SOIL INVERTEBRATES. Of the papers identified from the literature search process, seven were selected for acquisition for further review. Of those papers acquired, three papers met all 11 Study Acceptance Criteria.

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Microbial Antimony Biogeochemistry: Enzymes, Regulation, and ...

Antimony can be taken up by plants and photosynthetic biofilms and thereby enter the food chains of contaminated environments (2, 26). This can ultimately ..... Nonetheless, the results reported by several research groups in recent years suggest that microbial processes play an important role in the Sb cycle. Diversity of...

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Electrolyte impurity control at Chinchpada Refinery of ... - Eco-Tec

It was observed that at a critical arsenic level in the electrolyte, bismuth and antimony reports to anode slime. Considerable importance is given in controlling nickel and iron content in electrolyte by adopting latest low cost acid purification system. This novel method coupled with an effluent treatment plant ensures recovery...

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