The objective of this research was to study the precipitation of Sb and the stability of Sb2S3 during treatment of synthetic Sb(V) wastewater by sulfate-reducing bacteria (SRB). We investigated the transformation and precipitation of Sb, as well as the re-dissolution of Sb2S3 under different pH and carbon sources. The results showed that the …

Prepare several portions of 2mg/L, 100ml Sb solution, sonicate for 20min at 40℃, add activated carbon 50, 100, 200, 300, 400, 500mg after sonication, shake and absorb for 60min, shake rotation speed is 50r/min, after the end of the adsorption, measure the remaining Sb content in the solution, calculate the Sb removal rate, and the result is ...

Iron precipitate was produced with 0.1 M FeCl 3 and bound with the amino or hydroxyl groups of the granules surface, accompanied with removal of Ca, Mg, K and Na from the biomass matrix. The Fe(III)-treated granules exhibited much higher adsorption capacity of antimony(V) than the untreated granules, peaked at pH 3.4 at a maximum …

The regulation for antimony became effective in 1994. Between 1993 and 1995, EPA required your water supplier to collect water samples every 3 months for one year and analyze them to find out if antimony is present above 6 ppb. If it is present above this level, the system must continue to monitor this contaminant.

Recent studies have focused on a particular method for heavy metal ions removal, such as electrocoagulation (EC), adsorption using synthetic and natural adsorbents, magnetic field implementation ...

Antimony (Sb) and its compounds are considered as global priority pollutants. Elevated concentrations of antimony in natural and industrial process wastewater are of global concern, particularly given interest in the potential toxicity and harm to the environment from aquatic exposure. Iron-based materials for treatment by …

Section snippets Coagulation performance for antimony removal. Due to the application advantages of coagulation technology for Sb removal in water/wastewater treatment, a large number of studies have been carried out in the past 20 years on the main influencing factors and combined processes of Sb removal by coagulation.

antimony removal efficiency; (2) to further explore the antimony adsorption behavior in EC process based on adsorptionkinetics,adsorptionisotherm,andthermody-namics studies. 2 Experiment 2.1 Materials

Antimony is a regulated pollutant to be well controlled. This study compared the removal capability and mechanisms involved in the removal of Sb(III) by Fe-Mn …

The development and utilization of magnetic nanoadsorption materials with large adsorption capacity and easy separation are the research hotspot nowadays. In this study, nanosheet-assembled maghemite (γ-Fe2O3) magnetic microspheres were successfully synthesized by an environmental friendly, quick, and simple method, for …

In order to study the effect of Ce on antimony during adsorption, the Ce 3d spectra before and after the Sb adsorption were fitted into six peaks (Fig. 10c). The binding energies of 890.2, 897.9, 907.3, and 916.4 eV were attributed to Ce(IV), while the other two peaks located at 885.9 and 903.5 eV were assigned to Ce(III) [69], [70] .

Abstract. Addressing antimony (Sb) contamination, which is caused by the use of Sb compounds in various industries, is crucial. This study aims to compare two …

This study aims to compare the antimony removal efficiency and microbial communities throughout the treatment of synthetic wastewater polluted with antimony by …

Heterogeneous reactions at the mineral–water interface are of paramount importance in controlling the transport of contaminants. Herein, antimony (Sb) adsorption and subsequent precipitation on Fe2O3 facets were explored to understand its partitioning mechanisms by multiple complementary techniques. Our extended X-ray absorption fine …

This study aims to compare the antimony removal efficiency and microbial communities throughout the treatment of synthetic wastewater polluted with antimony by upflow anaerobic packed bed reactors, analyzing the two extracellular pathways for antimony reduction. ... antimony removal has been observed with efficiencies of 28% …

In this study, Pseudo-first-order, Pseudo-second-order, Elovich and Intra-particle diffusion models are used to analyze the kinetic characteristics of Fe 3 O 4 /HCO adsorption to remove Sb(III) 30 ...

The wide use of antimony in textile industry has posed threat to ecological health and attracted increased attention. The objective of this work was to develop enhanced coagulation strategies including PFS/FeSO 4 and aerated PFS/FeSO 4 for efficient antimony elimination from textile wastewater matrix. With a dosage of 0.75 mM Fe, …

Similar to the results of antimony removal in the isotherm study, the antimony removal by TSF in the systems with varying pH values in the presence of 0.7 mmol/L lysine, glutamate, and arginine was consistent with that in the systems where only antimony was present. At pH 2-9, the antimony removal efficiency in these four …

Antimony (Sb) contamination poses an emerging environmental risk, whereas its removal remains a contemporary challenge due to the lack of knowledge in its surface chemistry …

Abstract: The e ectiveness of antimony (Sb) removal by using iron-based coagulants was investigated in this study. The e ects of pH, coagulant types and dose, equilibrium concentration, co-existing

Regeneration of spent accumulator acid could be an alternative process for crystallization, neutralisation and disposal. Therefore, for the first time in a study of the possibilities of electrochemical removal of antimony and accumulator acid regeneration on a laboratory scale, two synthetic and several real systems containing sulfuric acid of …

For purposes of this study, only dissolved antimony removal technology is con- sidered. The third feasibility concern is economic impact - the influence that the given antimony removal technology will have on the profitability and viability of the mining opera- tion. No attempt is made in this study to estimate the profitability of the mining ...

This study aims to compare two different Sb removal mechanisms: ion exchange and chelation. Therefore, two different water-soluble polymers—glycidyl methacrylate-N-methyl-D-glucamine and poly 2-(acryloyloxy)ethyl trimethylammonium chloride—were synthesized and used to remove Sb(III) and Sb(V) using the polymer …

Antimony (Sb) is a toxic and carcinogenic metalloid that can be present in contaminated water generated by mining operations and other industrial activities. Dissimilatory Sb(V) reduction to Sb(III) under anaerobic conditions by prokaryotic microbial communities has been reported; however, the fate of antimony in anaerobic wastewater …

Firstly, the introduction of Sb chemistry, distribution and health threats are presented in this review, which is essential to the removal techniques. Then, we provide …

Adsorption studies indicated that the adsorption capacity for Sb (V) and Sb (III) is 1.65-287.88 mg/kg and 3.11-250 mg/kg, respectively. The percentage of Sb removal from water and ... "water treatment" "antimony removal", and "adsorption" were used to retrieve proper papers. After a thorough

A review of removal technology for antimony in aqueous solution Current removal technologies for Sb from aqueous solution. Due to increasingly stringent …

He, X., Min, X. & Luo, X. Efficient removal of antimony (III, V) from contaminated water by amino modification of a zirconium metal–organic framework with …

In this study, electrocoagulation (EC) with hybrid Fe–Al electrodes was used to remove antimony from contaminated surface water. Response surface methodology was applied to investigate the interactive effects of the operating parameters on antimony removal and optimize these variables. Results showed that the relationship between …

In this study, antimony removal from drinking water with coagulation-flocculation-sedimentation (CFS) is comprehensively investigated with respect to the dependence of both Sb(III) and Sb(V ...