Antimony (Sb) is a serious problem in the world [ 1, 2 ]. Antimony is a toxic metalloid with a similar toxicity and similar chemical properties to arsenic [ 3 ]. It can also interfere with enzymatic functions to break the ion balance in cells, leading to rashes, myalgia, and cancer risks [ 3 ].
No. 7 Antimony (V) removal from water by iron-zirconium bimetal oxide: Performance and mechanism 1203 Supporting material Supplementary material associated with this article can be found in the online version.
Luther S, Borgfeld N, Kim J, Parsons JG (2012) Removal of arsenic from aqueous solution: a study of the effects of pH and interfering ions using iron oxide nanomaterials.
Antimony (Sb) and arsenic (As) pollution in water has become a major concern in the world due to their toxicity and adverse effects to environmental quality and human health.
The antimony and lead contents in the slag can thus be reduced to 2.8 wt.% and 0.1 wt.%, respectively. Second, the conventional method of alkaline refining is adopted to remove arsenic from the crude alloy, and arsenic content in the low-arsenic alloy could be decreased to 0.009 wt.%.
The recovery of antimony from high arsenic-bearing flue dusts was carried out by a selective oxidation roasting process using MnO2, in which the arsenic was removed through a volatilization and ...
A new technology including hydrothermal leaching,oxidation of antimony oxide and condensation crystallization was proposed in this paper for arsenic alkali residue from antimony smelting.Based on the…
According to Fig. 3 and Table 4, arsenic is mainly found in (As, Sb) 2 O 3 solid solution in the crude antimony trioxide. ...
Subsequently, in the reverberatory furnace or short rotary furnace, the crude antimony trioxide is reduced and refined to produce fine antimony, which is blown to produce crude antimony white. ...
Antimony was selectively leached from a lead-rich industrial process residue called "dross" and recovered as an antimony oxide chloride (Sb4O5Cl2), which can be used as a component in flame retarda...
The white solid formed by the addition of elemental antimony to concentrated nitric acid contains 'antimony oxide nitrate hydroxide', Sb 4 O 4 (OH) 2 (NO 3) 2, and orthorhombic antimony (III) oxide. Calcination of this material in air is accompanied by complete dehydration and decomposition to the orthorhombic antimony (III) oxide which …
Gu et al. provided a method of using NaOH -H 2 O 2 to remove arsenic with the leaching rate of 98.17% from lead-zinc smelter ash, and the heavy metals including lead, cadmium, antimony, and zinc ...
Antimony (Sb) and arsenic (As) pollution in water has become a major concern in the world due to their toxicity and adverse effects to environmental quality and human health. Among the existing remediation technologies for Sb and As pollution control, sorption via iron-based materials has attracted increasing attention since they possess …
Arsenic and antimony are metalloids that exhibit similar geochemical behavior and are often found in the same mineral associations, co-occurring in mine waste derived from ore exploitation. Due to ...
Immobilizing arsenic-enriched wastewater from utilization of crude antimony oxides as scorodite using a novel multivalent iron source.
Selective removal of arsenic from high arsenic dust in the NaOH-S system and leaching behavior of lead, antimony, zinc and tin
A novel treatment process of lead anode slime bearing high antimony and low silver was developed by a potential-controlled chloridization leaching and continuous distillation. The experimental results show a high Sb 3+ concentration, 489.2 g/L, in the leaching solution for two-stage countercurrent leaching process, and the leaching rates …
Semantic Scholar extracted view of "A novel process for directional impurity removal and preparation of front-end high-purity antimony from crude antimony" by Chaosong Meng et al.
After washing and thermal decomposition of crude NaHCO3, the obtained Na2CO3 product can be used as the reagent of arsenic removal in the refining process of crude antimony.
In crude lead or copper electrorefining, impurity arsenic and antimony would gradually accumulate in the by-product anode slime, which is an important material for recycling precious metals. Anode slimes are characterized by high concentrations of lead, copper, arsenic, antimony, gold and silver.
Taking into consideration of the high selectivity of adsorption process, Zhang et al. found that a high arsenic removal rate of 92.24% at the expense of 6–7% antimony loss was obtained through a two-step filtration process using a porous FeAl (20Cr) intermetallic filter material at 773–823 K and 573–673 K respectively, but this method is ...
Arsenic-alkali residue is a kind of waste residue produced by removing the arsenic with alkali in the process of refining crude antimony. It is basically stored in the warehouse due to the lack of…
Arsenic and antimony occur in drinking water due to natural weathering or anthropogenic activities. There has been growing concern about their impact on health. The aim of this study was to assess the efficiency of a granular ferric oxide adsorbent medium to remove arsenic and antimony from drinking water via rapid small-scale column tests ...
The oxidation purification mechanism of arsenic was studied by XPS, SEM-EDS, XRD and FT-IR. The results show that arsenic in the crude lead is gradually oxidized by oxygen and lead oxide during arsenic removal process, and the arsenic trioxide is eventually converted into sodium arsenate (Na3AsO4) and lead arsenate (Pb2As2O7) in the slag.
In this way, the antimony oxide containing arsenic, lead, and other impurities (namely, crude antimony) is created and to remove the arsenic impurity, further refining is required. At present, the method of removing arsenic in the process of smelting antimony is mainly an alkaline air oxidation at high temperature.
In view of reducing contaminant and recovery arsenic and antimony, a novel technology was proposed to recover arsenic and antimony from arsenic-rich copper smelter dust comprehensively. The technique route includes three stages: arsenic and antimony trioxides were leached from the copper smelter dust with hydrochloric acid; …
However, some impurities, such as nickel, arsenic, antimony, and lead were dissolved. Purification steps using hydroxyapatite and magnesium chloride were effective at removing lead, antimony, and arsenic. On the basis of these results, copper cathode recovery from crude copper was examined.
Selective removal of arsenic from crude antimony trioxide by leaching with nitric acid
Alkaline pressure oxidative leaching (APOL) was developed to selectively remove arsenic from high arsenic smelter ash, based on thermodynamic calculation. NaOH concentration, leaching temperature, leaching time, oxygen partial pressure and liquid-to-solid ratio have different effects on the extraction of arsenic from the smelter ash.
Therefore, it is necessary to investigate effective methods of preliminary treatment for the removal of harmful or undesirable components, such as arsenic, antimony, and other metals present, from ...
In this study, a novel alkaline cycle leaching and MgNH4AsO4 precipitation technology was used to remove arsenic in arsenic–containing copper and cobalt slag.
In this study, a combined process of acidic oxidation leaching and SO 2 reduction was proposed to purify crude As 2 O 3 recovered from antimony smelting arsenic-alkali residue. The effects of various process factors on crude As 2 O 3 leaching were investigated based on the thermodynamic analysis.
