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Journal articles on the topic 'Metal sulphates'

Author: Grafiati

Published: 3 June 2025

Last updated: 1 August 2025

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1

M., L. Parmar, and Sharma Praveen. "A comparative study on viscosities of some hydrated and anhydrous salts of transition metal sulphates and magnesium sulphate in water at different temperatures." Journal of Indian Chemical Society Vol. 85, Nov 2008 (2008): 1146–47. https://doi.org/10.5281/zenodo.5820476.

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Department of Chemistry, Himachal Pradesh University, Summer Hill, Shimla-171 005, Himachal Pradesh, India <em>Manuscript received 31 March 2008, revised 26 June 2008, accepted 25 August 2008</em> Relative viscosities for the aqueous solutions of some hydrated and anhydrous salts of transition metal sulphates viz. cobalt sulphate, nickel sulphate, copper sulphate and zinc sulphate, and magnesium sulphate have been determined (in the concentration range 0.005-0.100 ± 0.001 mol kg-1) at five equidistant [298.15, 303.15, 308.15, 313.15 and 318.15 K] temperatures. The data have been ev

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2

Jenčárová, Jana, and Alena Luptáková. "The Metal And Sulphate Removal From Mine Drainage Waters By Biological-Chemical Ways." Nova Biotechnologica et Chimica 14, no. 1 (2015): 87–95. http://dx.doi.org/10.1515/nbec-2015-0018.

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Abstract Mine drainage waters are often characterized by high concentrations of sulphates and metals as a consequence of the mining industry of sulphide minerals. The aims of this work are to prove some biological-chemical processes utilization for the mine drainage water treatment. The studied principles of contamination elimination from these waters include sulphate reduction and metal bioprecipitation by the application of sulphate-reducing bacteria (SRB). Other studied process was metal sorption by prepared biogenic sorbent. Mine drainage waters from Slovak localities Banská Štiavnica and

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3

Montoya Zuluaga, Paula Andrea, and Juan Guillermo Castaño Gonzalez. "Validation of a chromatographic method and its use in the determination of sulphates in the products of atmospheric corrosion of zinc exposed to SO2 and NO2." Revista Facultad de Ingeniería Universidad de Antioquia, no. 33 (November 3, 2005): 84–96. http://dx.doi.org/10.17533/udea.redin.344316.

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The role of SO2 and NO2 in the atmospheric corrosion of zinc was studied by determining sulphates as the main products of corrosion when this metal is exposed to atmospheres containing SO2 and NO2. Scanning Electron Microscopy (SEM/EDX) and Ion Exchange Chromatography (IC) were used as instrumental techniques. The former was used to establish the morphology and the elementary qualitative determination of corrosion products, and the latter to quantify sulphates. Before conducting the chromatographic analyses a series of parameters such as selectivity, linearity, precision, accuracy, limit of qu

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4

Kousi, Pavlina, E. Remoudaki, Artin Hatzikioseyian, and Marios Tsezos. "A Study of the Operating Parameters of a Sulphate-Reducing Fixed-Bed Reactor for the Treatment of Metal-Bearing Wastewater." Advanced Materials Research 20-21 (July 2007): 230–34. http://dx.doi.org/10.4028/www.scientific.net/amr.20-21.230.

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An upflow fixed-bed sulphate-reducing reactor has been set up and monitored for the treatment of metal-bearing wastewater. Zinc has been chosen as the target metal to be sequestered from influent water stream at initial concentrations ranging from 50 to 400 mg/l and initial pH values ranging from 3 to 5. Main operating parameters of the reactor, such as the composition and content of electron donor, electron acceptor, sulphate and metal removal capacity, have been monitored during ten months of continuous operation. The results obtained have shown that the reactor has a considerable capacity o

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5

Dovorogwa, Hamlton, and Kevin Harding. "Exploring the Use of Tobacco Waste as a Metal Ion Adsorbent and Substrate for Sulphate-Reducing Bacteria during the Treatment of Acid Mine Drainage." Sustainability 14, no. 21 (2022): 14333. http://dx.doi.org/10.3390/su142114333.

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Treatment of acid mine drainage (AMD) was successfully demonstrated using tobacco waste (dust and stem) as a metal cation adsorbent, pH modifier and carbon source for sulphate-reducing bacteria (SRB). Synthetic and industrial AMD wastewaters were used in batch adsorption and SRB facilitated bioremediation experiments. Up to absorbent loading of 80 g/L, metal removal increased. However, increases above 160 g/L did not offer a proportional increase. At an adsorbent loading of 80 g/L, the highest metal removals of 38, 41, 31 and 43% for iron, nickel, copper and zinc respectively were achieved. Th

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6

Rodríguez-Pacheco, Roberto, Gregorio García, Ana Vanessa Caparrós-Ríos, et al. "Mineralogy, Geochemistry and Environmental Hazards of Different Types of Mining Waste from a Former Mediterranean Metal Mining Area." Land 12, no. 2 (2023): 499. http://dx.doi.org/10.3390/land12020499.

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Mine waste constitutes one of the biggest environmental and management problems, both due to its quantity and its danger when they are rich in toxic elements. There is a wide variety of waste from the oxidation of ores in metal mining areas, both metal sulphide and other minerals. These residues may be enriched in potentially toxic elements that can spread and contaminate ecosystems, farmland and villages. This study has focused on the characterization and evaluation of residues derived from metal-bearing mining waste in abandoned mining areas. Mineralogy and geochemical characteristics were d

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7

Singh, Namita, and Ganapathi Anantharaman. "Coordination polymers built with transition metal sulphates and angular 2,5-bis(imidazol-1-yl)thiophene (thim2): synthesis, structure and photoluminescent properties." CrystEngComm 16, no. 27 (2014): 6203–12. http://dx.doi.org/10.1039/c4ce00691g.

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8

Priyadarshini., P. A. Amulya. S. Chaitra. T. D. Harishmitha. N. Mohitha. S. "INVITRO EVALUATION OF FEW METAL COMPOUNDS ON DROSOPHILA MELANOGASTER: A KEY FACTOR IN REDUCING FITNESS." INDO AMERICAN JOURNAL OF PHARMACEUTICAL SCIENCES 05, no. 03 (2018): 1683–87. https://doi.org/10.5281/zenodo.1209303.

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Abstract: Metals and metal ions play an important role in biological processes like growth, metabolism and other biochemical processes. In our present study, Drosophila melanogaster was used as a model organism to study the effects like growth rate, fertility, viability, morphological changes and other chromosomal aberrations. The flies were subjected to different concentration of metal sulphates like MgSO4, CuSO4, Al2 (SO4)3 and FeSO4 which were dissolved in rava-jaggery media. However, there was great variation in growth rate with the compounds like CuSO4 , Al2(SO4)3 and FeSO4 but could see

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9

A., THANGARAJ, and GOPALAN R. "Kinetics of Oxidation of 2-Propanol with Chromium(VI) : Influence of some Metal Ions and Ligands." Journal of Indian Chemical Society Vol. 67, June 1990 (1990): 453–57. https://doi.org/10.5281/zenodo.6163490.

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Department of Chemistry, Madras Christian College, Tambaram, Madras-600 059 <em>Manuscript received 11 October 1988, revised 7 November 1989, accepted 6 February 1990</em> Kinetics of oxidation of  2-propanol by chromic acid in presence of Mn<sup>II</sup>, Ce<sup>III</sup>, Fe<sup>II</sup> and Co<sup>II</sup> sulphates and complexing ligands such as EDTA 2,2’-dipyridyl and 1,10-phenanthroline in aqueous medium have been studied.  The reaction rate constants decrease by the addition of metal ions and increase in presence of ligands.  

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10

Petkovic, Jelena, Ivana Mladenovic, Nikola Vukelic, Milos Mojovic, and Goran Bacic. "Lanthanide doped alkaline metal sulphates as candidates for EPR dosimetry." Journal of the Serbian Chemical Society 65, no. 10 (2000): 743–54. http://dx.doi.org/10.2298/jsc0010743p.

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The applicability of lanthanide doped alkaline metal sulphates as a new type of dosimeters for EPR dosimetery of ionizing radiation has been investigated in an attempt to obtain a dosimeter with better characteristics than the commonly used alanine dosimeter. Irradiation of samples doped with different lanthanides (Y, Ln, Gd) showed that the best sensitivity is obtained using dosimeters doped with Y2(S04)3. Different procedures for manufacturing dosimeters were studied and an optimum procedure was established. The time stability of the EPR signal of the irradiated Y2(S04)3 dosimeter was invest

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11

Salihodzhaev, D. M., T. N. Nurakhmetov, K. S. Baktybekov, A. T. Akylbekov, A. S. Primova, and D. E. Rakhimov. "Quantum-chemical simulation of defect formation in alkali metal sulphates." physica status solidi (c) 2, no. 1 (2005): 453–56. http://dx.doi.org/10.1002/pssc.200460205.

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12

Patil, S. F., N. G. Adhyapak, N. K. Shinde, and R. C. Tirmale. "Tracer-diffusion of Co2+ ions in some alkaline earth metal chlorides and transition metal sulphates." International Journal of Radiation Applications and Instrumentation. Part A. Applied Radiation and Isotopes 37, no. 2 (1986): 149–53. http://dx.doi.org/10.1016/0883-2889(86)90063-8.

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13

Malinowska, Izabela, Zuzanna Ryżyńska, Eryka Mrotek, Tomasz Klimczuk, and Anna Zielińska-Jurek. "Synthesis of CoFe2O4 Nanoparticles: The Effect of Ionic Strength, Concentration, and Precursor Type on Morphology and Magnetic Properties." Journal of Nanomaterials 2020 (May 5, 2020): 1–12. http://dx.doi.org/10.1155/2020/9046219.

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The present study highlights the effect of metal precursor types (SO42¯, Cl¯, and NO3¯), their concentration, and the influence of ionic strength of reaction environment on the morphology, surface, and magnetic properties of CoFe2O4 particles. The magnetic nanoparticles were obtained by chemical coprecipitation in alkaline medium at increasing metal concentration in the range of 0.0425 mol·dm-3 to 0.17 mol·dm-3 and calcination temperature from 400°C to 800°C. It was found that the chemistry of precursors can be directly correlated with magnetic properties. The CoFe2O4 particles from metal sulp

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14

Bahadur, P., A. Gupta, and A. Khatri. "I. R. Characterization of Metal Dodecyl Sulphates and their Solubilizing Action." Tenside Surfactants Detergents 22, no. 4 (1985): 196–224. http://dx.doi.org/10.1515/tsd-1985-220409.

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15

Leonzio, Grazia. "Recovery of metal sulphates and hydrochloric acid from spent pickling liquors." Journal of Cleaner Production 129 (August 2016): 417–26. http://dx.doi.org/10.1016/j.jclepro.2016.04.037.

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16

McDonald, Robbie G. "The Effects of Chloride on the High-Temperature Pressure Oxidation of Chalcopyrite: Some Insights from Batch Tests—Part 1: Leach Chemistry." Minerals 13, no. 8 (2023): 1065. http://dx.doi.org/10.3390/min13081065.

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The complete reaction of chalcopyrite at ≥220 °C under pressure oxidation conditions (10 or 20% w/w pulp density, PO2 700 kPa) is a clean, near complete process, yielding high copper extractions (~99%) in an acidic leach liquor composed of dissolved metal sulphates, when high-quality process water is employed. However, when the process water contains chloride ions, here 3–100 g/L, although the copper extraction rate is enhanced, complete oxidation of sulphur under batch processing conditions is delayed. Chloride addition, therefore, appears to favour an oxidation mechanism that liberates cupri

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17

de la Torre, M. L., D. Sánchez-Rodas, J. A. Grande, and T. Gomez. "Relationships between pH, colour and heavy metal concentrations in the Tinto and Odiel rivers (southwest Spain)." Hydrology Research 41, no. 5 (2010): 406–13. http://dx.doi.org/10.2166/nh.2010.082.

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The relationships between pH, colour, Fe, Mn, Cu, Zn, Cd and sulphates in surface water samples collected from the Tinto and Odiel Rivers (southwest Spain) have been studied. These rivers are adversely affected by the inputs of acid and heavy metals due to Acid Mine Drainage (AMD). Samples were collected from both rivers on a monthly sampling basis from 1995 to 2001. The analytical results showed that pH (mean pH 3.1) in the water samples of the Odiel River presented a greater correlation with heavy metals, colour and sulphates than in the Tinto River (mean pH 2.5). The tidal effect at the sam

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18

Kyaw, Zay Ya, Alexander A. Nikolaev, Zaw Oo Htet, and Kyaw Kyaw Phyo. "Study of the Effect of Copper (II), Zinc and Iron (II) Sulphates on the Froth Flotation of Sphalerite by Sulfhydryl Collectors." Key Engineering Materials 910 (February 15, 2022): 551–56. http://dx.doi.org/10.4028/p-ny5paw.

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The practice of benefication of copper-zinc ores has established that the production of high-quality zinc concentrates is impossible without the addition of sphalerite and pyrite modifiers to various flotation operations. This article present the result of study of the effect of copper (II), zinc and iron (II) sulfate on the froth flotation of sphalerite by sulfhdryl collectors. Typically, it is achieved through optimisation of flotation circuits, installation of modern equipment and changing the flotation reagents modes. Therefore, the floatability of sphalerite in an alkaline lime medium was

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19

Dwibedi, Debasmita, and Prabeer Barpanda. "Sodium Metal Sulphate Alluaudite Class of High Voltage Battery Insertion Materials." MRS Advances 3, no. 22 (2018): 1209–14. http://dx.doi.org/10.1557/adv.2018.132.

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ABSTRACTElectrochemical energy storage has recently seen an exponential demand in the large-scale (power) grid storage sector. Earth abundant sodium-ion batteries are competent to enable this goal with economic viability. In a recent report in sodium-ion battery research, alluaudite framework Na2Fe2(SO4)3 has been reported with the highest Fe3+/Fe2+ redox potential (ca. 3.8 V, P. Barpanda, G. Oyama, S. Nishimura, S. C. Chung, and A. Yamada., Nature Commun. 5: 4358, 2014) with energy density comparable to the state-of-the-art Li-ion batteries. Material discovery is as essential as optimization

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20

Marchetti, Mario, H. DeWayne Ashmead, Nadia Tossani, Silvia Marchetti, and Stephen D. Ashmead. "Comparison of the Rates of Vitamin Degradation when Mixed with Metal Sulphates or Metal Amino Acid Chelates." Journal of Food Composition and Analysis 13, no. 6 (2000): 875–84. http://dx.doi.org/10.1006/jfca.2000.0917.

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21

Chaves, Igor A., Mehdi Taherishargh, and Thomas Fiedler. "Long-term immersion exposure of perlite–aluminium syntactic foam in seawater." Journal of Composite Materials 53, no. 9 (2018): 1229–40. http://dx.doi.org/10.1177/0021998318796264.

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Perlite–metal syntactic foam is a novel lightweight material with good specific strength and excellent energy absorption capabilities. To analyse its suitability in marine applications, perlite–metal syntactic foam has been immersed for 2 years in natural flowing seawater. The change of mass and mechanical properties has been studied as a function of exposure time. Results indicate a slow degradation of mechanical properties that can be attributed to a change of the macroscopic deformation mechanism. Interestingly, no evidence of significant corrosion was observed. Instead, the change in mecha

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22

Ispas, Adriana, and Andreas Bund. "Electrochemical Quartz Crystal Microbalance Study on the Electrodeposition of Fe, Co and Fe-Co Alloys." ECS Meeting Abstracts MA2024-01, no. 25 (2024): 1430. http://dx.doi.org/10.1149/ma2024-01251430mtgabs.

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Cobalt-iron alloys are interesting soft magnetic materials which are used for example in magnetic sensors and transducers. They can be obtained by different techniques such as PVD, magnetron sputtering, or casting. One easy and not very expensive way to produce these alloys is the electrochemical deposition technique, which was also chosen in this study. This contribution will describe the electrodeposition of Co, Fe and Fe-Co alloys (Fe70Co30) from an aqueous sulphate-based electrolyte containing boric acid as a buffer and sodium citrate and citric acid besides the metal sulphates. Potentiost

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23

Tyagi, Suchitra, Vichitra Tyagi, and Basant Shubhankar. "Effect of additives on the micellar behaviour of aqueous alkaline earth metal dodecyl sulphates." Materials NanoScience 12, no. 1 (2025): 1182. https://doi.org/10.62110/sciencein.mns.2025.v12.1182.

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The critical micelle concentrations (CMCs) of alkaline earth metal dodecyl sulfates have been determined in the presence of alkali metal dodecyl sulfates, cholic acid, ammonium chloride, and sodium citrate—key ingredients commonly found in various cough syrups. Two key observations emerge from the data obtained. First, the presence of these additives leads to a decrease in CMC values. Second, the efficiency of CMC reduction follows the order: sodium citrate > cholic acid > potassium dodecyl sulfate > sodium dodecyl sulfate > ammonium chloride (NH₄Cl) > lithium dodecyl sulfate. T

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Tizzoni, A. C., N. Corsaro, C. D'Ottavi, S. Licoccia, S. Sau, and P. Tarquini. "Oxygen production by intermediate metal sulphates in sulphur based thermochemical water splitting cycles." International Journal of Hydrogen Energy 40, no. 11 (2015): 4065–83. http://dx.doi.org/10.1016/j.ijhydene.2015.01.147.

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Rajurkar, N. S., and V. M. More. "Tracer diffusion of Co2+ ions in some transition metal sulphates in agar gel." Journal of Radioanalytical and Nuclear Chemistry Letters 127, no. 6 (1988): 409–17. http://dx.doi.org/10.1007/bf02166768.

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26

Rosado, L., C. Morais, A. E. Candeias, A. P. Pinto, F. Guimarães, and J. Mirão. "Weathering of S. Domingos (Iberian Pyritic Belt) abandoned mine slags." Mineralogical Magazine 72, no. 1 (2008): 489–94. http://dx.doi.org/10.1180/minmag.2008.072.1.489.

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AbstractThe S. Domingos abandoned mine is a major source of pollutant-metals contamination. Slags from the 19th-20th century contain the most hazardous material. However, the release of pollutant metals depends on the metal-retention capability of weathering products. This work shows that Zn is not effectively retained by these weathering products while As and Pb are partially stored in sulphates. Copper, on the other hand, has a different behaviour and is the most leachable of the elements studied.

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27

REES, Martin D., Clare L. HAWKINS, and Michael J. DAVIES. "Hypochlorite and superoxide radicals can act synergistically to induce fragmentation of hyaluronan and chondroitin sulphates." Biochemical Journal 381, no. 1 (2004): 175–84. http://dx.doi.org/10.1042/bj20040148.

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Activated phagocytes release the haem enzyme MPO (myeloperoxidase) and also generate superoxide radicals (O2•−), and hence H2O2, via an oxidative burst. Reaction of MPO with H2O2 in the presence of chloride ions generates HOCl (the physiological mixture of hypochlorous acid and its anion present at pH 7.4). Exposure of glycosaminoglycans to a MPO–H2O2–Cl− system or reagent HOCl generates long-lived chloramides [R-NCl-C(O)-R′] derived from the glycosamine N-acetyl functions. Decomposition of these species by transition metal ions gives polymer-derived amidyl (nitrogen-centred) radicals [R-N•-C(

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28

Pickles, Christopher A., and Omid Marzoughi. "Thermodynamic Investigation of the Sulphation Roasting of Electric Arc Furnace Dust." Minerals 9, no. 1 (2018): 18. http://dx.doi.org/10.3390/min9010018.

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During the remelting of automobile scrap in the electric arc furnace steelmaking process, a dust is generated. This dust contains significant amounts of zinc, iron, and lead and in some cases, copper and nickel. However, the recovery of these metals is difficult, because of the complex chemical and physical characteristics of the dust. Numerous pyrometallurgical, hydrometallurgical and hybrid processes have been devised and tested for metal recovery, but only the Waelz rotary kiln process has achieved significant commercialisation. One potential process, which has received little attention in

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29

Thakur, Ramesh, Ravi Sharma, and Balwinder Saini. "Activation Energy Parameters for Hydrodynamic Permeability of Divalent Transition Metal Sulphates and Magnesium Sulphate in Binary Aqueous Mixtures of Ethylene Glycol." Asian Journal of Chemistry 28, no. 9 (2016): 2043–49. http://dx.doi.org/10.14233/ajchem.2016.19889.

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30

Tribulová, Tereza, František Kačík, Dmitry V. Evtuguin, and Iveta Čabalová. "Influence of Chemical Treatment on Chemical Changes of Fir Wood." Key Engineering Materials 688 (April 2016): 38–43. http://dx.doi.org/10.4028/www.scientific.net/kem.688.38.

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Many chemicals are used to prolong wood lifetime and protect wood against wood-destroying organisms and fire but there is not sufficient information about their possible corrosive effects on wood and its structural components from the perspective of long-term exposition in unsuitable condition. This study evaluated the combined effects of inorganic chemicals (borates, phosphates containing ammonia, sulphates with metal cations, chlorides) and wet-thermal accelerated ageing (T=80 °C, RH=65 %, for 30 days) on chemical composition of treated wood. Used analyses indicated that selected chemicals c

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31

Anungstri, Rissa, Himawan Tri Bayu Murti Petrus, and Agus Prasetya. "Removal of Sulphate and Heavy Metals from Acid Mine Drainage using Permeable Reactive Barrier Technique." IOP Conference Series: Earth and Environmental Science 1065, no. 1 (2022): 012059. http://dx.doi.org/10.1088/1755-1315/1065/1/012059.

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Abstract Containing sulphates and heavy metals, acid mine drainage (AMD) should be managed strategically to mitigate and control the migration of the contaminants to the downstream area. Conventional treatment techniques such as using lime to increase pH levels and metal precipitation or using imported material are usually inefficient and unsustainable. The AMD treatment investigated in this study uses the permeable reactive barrier (PRB) technique to enhance bacterial sulphate reduction and metal sulphide precipitation. The AMD treated is seepage water from industrial mining waste rock dump.

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Vorlow, S., M. S. Wainwright, and D. L. Trimm. "The catalytic activity and selectivity of supported vanadia catalysts doped with alkali metal sulphates." Applied Catalysis 17, no. 1 (1985): 87–101. http://dx.doi.org/10.1016/s0166-9834(00)82705-0.

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Vorlow, S., M. S. Wainwright, and D. L. Trimm. "The catalytic activity and selectivity of supported vanadia catalysts doped with alkali metal sulphates." Applied Catalysis 17, no. 1 (1985): 103–14. http://dx.doi.org/10.1016/s0166-9834(00)82706-2.

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Vorlow, S., M. S. Wainwright, and D. L. Trimm. "The catalytic activity and selectivity of supported vanadia catalysts doped with alkali metal sulphates." Applied Catalysis 17, no. 1 (1985): 115–25. http://dx.doi.org/10.1016/s0166-9834(00)82707-4.

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35

Savikhin, F., M. Kerikmäe, E. Feldbach, et al. "Fast intrinsic emission with the participation of oxyanion and cation excitations in metal sulphates." physica status solidi (c) 2, no. 1 (2005): 252–55. http://dx.doi.org/10.1002/pssc.200460158.

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36

Schmidt, Beata. "Flocculation efficiency of hybrid polymers with trivalent metal cations." Polish Journal of Chemical Technology 20, no. 4 (2018): 96–101. http://dx.doi.org/10.2478/pjct-2018-0060.

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Abstract Acrylamide/acrylic acid copolymers (AAm/AA) have been synthesized by microemulsion polymerization in absence and presence of trivalent cations Al+3 and Fe+3. Starch materials were obtained by introducing cations Al+3 and Fe+3, in the form of aqueous solutions of sulphates(VI) (modif. starch/Me+3), into the oxidized starch (modif. starch). The flocculation performance of obtained polyacrylamide copolymers and the one based on the natural polymer was compared with the performance of the commercial AAm/AA flocculant (CF). All materials were characterized by capillary viscometry, FTIR and

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37

M., L. PARMAR, and K. GUPTA V. "A Study on the Conductimetric Determination of Ion-association Constants and Walden Product for some Transition Metal Sulphates in Aqueous Urea Solutions." Journal of Indian Chemical Society Vol. 73, Oct 1996 (1996): 512–15. https://doi.org/10.5281/zenodo.5902296.

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Department of Chemistry, Himachal Pradesh University, Shimla-171 005 <em>Manuscript</em><em> r</em><em>eceived 16 December 1992, revised  2 January 1995 accepted 23 February 1995</em> Ion-association constants for dilute solutions of nickel(II), copper(II) and zinc(II) sulphates in urea-water mixtures (11.52, 30.31, 29.64 and 36.83 urea wt %) were determined by means of conductivity measurements between 298 and 313 K. The Walden product has been calculated for all the three electrolytes in different compositions of urea-water at 303 K. The temperature effect on Walden product&nb

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38

Gadzhieva, Guleybat M., Rizvan M. Guseynov, Patimat N. Gasanalieva, Jennet R. Magomedova, and Zaira I. Rashkueva. "Effects of Metal Sulphates and Seawater on the Seeds Germination of the “Pioneer” Sunflower Cultivar." Dagestan State Pedagogical University. Journal. Natural and Exact Sciences 12, no. 2 (2018): 10–14. http://dx.doi.org/10.31161/1995-0675-2018-12-2-10-14.

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39

Kinuthia, J. M., S. Wild, and G. I. Jones. "Effects of monovalent and divalent metal sulphates on consistency and compaction of lime-stabilised kaolinite." Applied Clay Science 14, no. 1-3 (1999): 27–45. http://dx.doi.org/10.1016/s0169-1317(98)00046-5.

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Viitala, Hanna, and Pekka Taskinen. "Hot Corrosion Mechanism of Steels Exposed to Heavy Metal Chlorides and Sulphates in SO2 Environment." Oxidation of Metals 86, no. 3-4 (2016): 239–62. http://dx.doi.org/10.1007/s11085-016-9634-z.

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41

Salvador, J. A. R., M. L. Sáe Melo та A. S. Campos Neves. "Oxidations with potassium permanganate — metal sulphates and nitrates. β-Selective epoxidation of Δ5-unsaturated steroids". Tetrahedron Letters 37, № 5 (1996): 687–90. http://dx.doi.org/10.1016/0040-4039(95)02243-0.

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Mafane, Ditiro, Tholiso Ngulube, and Mamasegare Mabel Mphahlele-Makgwane. "Anaerobic Bioremediation of Acid Mine Drainage Using Sulphate-Reducing Bacteria: Current Status, Challenges, and Future Directions." Sustainability 17, no. 8 (2025): 3567. https://doi.org/10.3390/su17083567.

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Biological reduction of sulphates has gradually replaced unit chemical processes for the treatment of acid mine drainage (AMD), which exerts a significant environmental impact due to its elevated acidity and high concentrations of heavy metals. Bioremediation is optimally suited for the treatment of AMD because it is cost-effective and efficient. Anaerobic bioremediation employing sulphate-reducing bacteria (SRB) presents a promising solution by facilitating the reduction of sulphate to sulphide. The formed can precipitate and immobilise heavy metals, assisting them in their removal from conta

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Haque, Ziaul, Tanzeel Ahmed, Danish Mand, Kumari Asma, Mohd Rumman, and Anzar Alam. "Gandhak (sulphur) and its medicinal importance described in Unani Medicine; Mini Review." Journal of Scientific and Innovative Research 4, no. 4 (2015): 191–92. http://dx.doi.org/10.31254/jsir.2015.4407.

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Sulphur is a non metal element which commonly known as Gandhak. It occurs in the nature in the form of pure sulphur, sulphides and sulphates. It plays an imperative role for the maintains of health as skin, connective tissues, muscles, bones, teeth and hair, also control the metabolic process which is a key factor for the body. In nutritious substance sulphur is also found such as garlic, onion, fish and beans. Mainly sulphur is used for the cosmetic purposes as treatment of various skin diseases viz; Jarb, Qooba, Kharish, Taqassure Jild, Qarha Muzmina, Busoore Labnia etc. Unani Attiba describ

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Zuidervaart, E., M. A. Reuter, R. H. Heerema, R. G. J. M. Van Der Lans, and J. J. Derksen. "Effect of dissolved metal sulphates on gas-liquid oxygen transfer in agitated quartz and pyrite slurries." Minerals Engineering 13, no. 14-15 (2000): 1555–64. http://dx.doi.org/10.1016/s0892-6875(00)00138-2.

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Mochida, Isao, Kinya Sakanishi, Hidehiko Usuba, and Kunio Miura. "Removal of basic nitrogen species in coal-tar pitch by metal sulphates supported on silica gel." Fuel 70, no. 6 (1991): 761–64. http://dx.doi.org/10.1016/0016-2361(91)90075-l.

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Murthy, Janakaraj, B. Jagadeesha Pai, S. A. Salmataj, Pushparaj A. Naik, and Gururaj Acharya. "A Comprehensive Review on Heavy Metal Toxicity in Coastal Sediments." IOP Conference Series: Earth and Environmental Science 1387, no. 1 (2024): 012026. http://dx.doi.org/10.1088/1755-1315/1387/1/012026.

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Abstract Heavy metal toxicity is becoming a growing environmental concern worldwide. The estuary’s surface waters and sediments are finally being transported to the coastal areas. During this transportation, the water and sediments carry numerous elements. The essential elements like nutrition are nitrates, phosphates, silicates, and sulphates, which are required for aquatic life, and non-essential elements contribute to pollution. The input of these essential and non-essential elements is being contributed by nature and anthropogenic activities. Due to the increase in urbanization and anthrop

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Hu, Jian Qiang, Jiang Zhu, Ke Yi Gao, and Yi Wei Fei. "Study on Tribological Properties of Organic Bismuth Compounds as Lubricationg Additive." Advanced Materials Research 233-235 (May 2011): 1632–35. http://dx.doi.org/10.4028/www.scientific.net/amr.233-235.1632.

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A bismuth diamyl-dithiocarbamate additive was synthesized. A four-ball tester was used to evaluate the tribological performance of the additive in mineral oil, and compared with same types of metal additives. The results show that it exhibits better load-carrying capacities than said organic metal additives. The surface analytical tools such as X-ray photoelectron spectrometer (XPS) and Scanning electron microscopy (SEM) were used to investigate the topography, the compositions contents and the depth profile of some typical elements on the rubbing surface of worn scar. Smooth topography of wor

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Lonzinger, Tatiana M., Vadim A. Skotnikov, and Alexey M. Sukharev. "Study of the Process of Heavy Metals Cations Mineralization by Poly-Component Structures Based on Calcium and Magnesium Silicates." Materials Science Forum 989 (May 2020): 103–9. http://dx.doi.org/10.4028/www.scientific.net/msf.989.103.

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In order to achieve the goal of absorption of environmental pollutants, poly-component materials based on magnesium and calcium silicates - metal cations mineralizers – have been synthesized. The study of the processes of mineralization was carried out using model solutions containing soluble sulphates of copper, zinc, manganese and iron. The studies carried out have shown that the synthesized mineralizer based on calcium and magnesium silicates has a multicomponent structure with active electrochemically inhomogeneous centres on its surface as a result of breaking the Ca-O-Si, Mg-O-Si bonds,

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Okobiebi, O. O., and B. O. Okobiebi. "Physicochemical and Heavy Metal Assessment of the Udu River, Delta State, Nigeria." Journal of Applied Sciences and Environmental Management 25, no. 4 (2021): 665–67. http://dx.doi.org/10.4314/jasem.v25i4.28.

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The Udu River is a major source of commerce and provides water for agricultural and domestic use to the Udu people, hence we studied the physicochemical parameters (pH, electrical conductivity, TSS, TDS, turbidity, Salinity, DO, COD, BOD, chlorides, sodium, potassium, total hardness, alkalinity, nitrates, ammonium, sulphates) as well as the evaluation of the degree of metal contamination (iron, zinc, cadmium, nickel, copper and lead) present in the samples. The analyses carried out revealed water samples were acidic, pH below 7, temperature ranged from 29.5 oC - 32.7 oC which was above WHO per

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Okobiebi, O. O., and B. O. Okobiebi. "Physicochemical and Heavy Metal Assessment of the Udu River, Delta State, Nigeria." Journal of Applied Sciences and Environmental Management 25, no. 4 (2021): 665–67. http://dx.doi.org/10.4314/jasem.v25i4.28.

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The Udu River is a major source of commerce and provides water for agricultural and domestic use to the Udu people, hence we studied the physicochemical parameters (pH, electrical conductivity, TSS, TDS, turbidity, Salinity, DO, COD, BOD, chlorides, sodium, potassium, total hardness, alkalinity, nitrates, ammonium, sulphates) as well as the evaluation of the degree of metal contamination (iron, zinc, cadmium, nickel, copper and lead) present in the samples. The analyses carried out revealed water samples were acidic, pH below 7, temperature ranged from 29.5 oC - 32.7 oC which was above WHO per

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