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• Open Access   Article

  Cr (VI) Removal From Tannery Wastewater by Syrian Natural Pyrite as a Reducing Agent

  Ali Zhairy, Areej Adra, Muhammad Ghafar

  Research Paper | Journal-Paper (IJSRCS)

  Vol.7 , Issue.6 , pp.1-5, Dec-2020

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  Abstract
  In this study, the Syrian natural pyrite from Hosen Suleiman area in Safita/Tartous governorate was used as a reducing agent to remove Hexavalent chromium Cr(VI) from tannery wastewater in aerobic conditions. The result showed that pyrite was a sole phase and mainly composed of Fe (43.2%) and S (40.3%) as well as other impurities (16.5%). The analysis of tannery effluent revealed high values of TDS (28.5g/L), COD (3680mg/L), BOD520 (1500mg/L), and Cr(VI) (13.5mg/L). Batch experiments, as a function of contact time, pH, adsorbent dosage, and initial Cr(VI) concentration, were carried out to determine the optimal removal conditions for Cr(VI). The results showed that:(1) contact time was 6 hours to reach a state of equilibrium. (2) The Cr(VI) reduction was found to be pH dependent and occurred under acidic conditions of pH 2.2-2.5. (3) The Cr (VI) reduction rate increased with a decrease in initial Cr (VI) concentration as the rate of Cr(VI) removal was dependent on the initial pyrite concentration. Eventually, these conditions were applied on real tannery wastewater for Cr(VI) removal. The study demonstrated that the percentage of Cr(VI) removal was found to be 77%.

  Key-Words / Index Term
  Syrian pyrite, Cr(VI) removal, tannery wastewater

  References
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  Citation
  Ali Zhairy, Areej Adra, Muhammad Ghafar, "Cr (VI) Removal From Tannery Wastewater by Syrian Natural Pyrite as a Reducing Agent," International Journal of Scientific Research in Chemical Sciences, Vol.7, Issue.6, pp.1-5, 2020

• Open Access   Article

  Assessment of Some Physico-chemical and Bacteriological Properties of Bottled Drinking Water in the Wadi Al-Shati Area Southern of Libya

  M. A.Ali, A.M. Elgerbi, E.J. Emhemmad, W.K. Amhimmid

  Research Paper | Journal-Paper (IJSRCS)

  Vol.7 , Issue.6 , pp.6-11, Dec-2020

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  Abstract
  The study was conducted to evaluate the quality of bottled water circulating in Wadi Al-Shati- Libya, and measured some of its physicochemical and bacteriological properties and its compatibility with Libyan and WHO standards. a total of 11 brands were selected for water analysis, the results of physicochemical analyses showed a difference in the quality of bottled water. The results of turbidity ranged from 0.84 to 1.04 NTU, while pH were between 5.63 and 7.45, while the TDS was between 28-303 mg/L, The TH was between 2-36 mg/L, the calcium was between 0.4-6 mg/L, magnesium ranged from 0.24-5 mg/L, and sodium was between 2-23 mg. Potassium ranged from 0.4-17 mg/L and chloride was between 1.3-45 mg/L, while nitrate was only 37 mg/L, and sulfate was between 0-73 mg/L. The bicarbonate ranged from 4-29 mg/L, while the iron ranged from 0-0.23 mg/L, manganese was the highest concentration of 0.19 mg/L, and zinc was only 0.11 mg/L, while the highest concentration of copper was 0.017 m/l, lead was not detected in all samples. The results showed that the total number of bacteria in bottled water ranged from 0-380 ufc /ml and there were samples that exceeded the permissible limits in the Libyan prescribing of bottled drinking water, while the results of the detection of colitis and fecal colon bacteria showed that all studied samples were free of fecal colon and coli , these results conformed to Libyan standards set out in the Libyan registration Drinking Water No. 10 for 2008.

  Key-Words / Index Term
  Bottled water, Libyan and WHO standards, drinking water quality , Wadi Al-Shati- Libya

  References
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  Citation
  M. A.Ali, A.M. Elgerbi, E.J. Emhemmad, W.K. Amhimmid, "Assessment of Some Physico-chemical and Bacteriological Properties of Bottled Drinking Water in the Wadi Al-Shati Area Southern of Libya," International Journal of Scientific Research in Chemical Sciences, Vol.7, Issue.6, pp.6-11, 2020

• Open Access   Article

  Bleaching Efficiency of Ortho-Phosphoric Acid Activated Kaolin Clay Sample on Crude Palm Oil Colour Pigment Removal

  R.E. Nnam, J.K. Anozie, N.J. Emerenini, N.U. Okoro

  Research Paper | Journal-Paper (IJSRCS)

  Vol.7 , Issue.6 , pp.12-20, Dec-2020

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  Abstract
  Vegetable oil is one of the basic food items widely consumed by every human being in the universe and therefore its quality should be good enough so that it accounts for healthy life. The purity characteristics desirable in edible oil, such as light colour, bland taste and a good oxidative stability of locally produced palm oil is obtained by refining. To this end, the bleaching efficiency of locally produced palm oil using Ortho-phosphoric acid kaolin clay sourced from Ogbagu Ndemiyi Unwana, in Afikpo North L. G. A. of Ebonyi State, Nigeria, as the absorbent is investigated in this research. The clay was activated at different acid concentrations to improve its adsorptive capacity. To study the ability or performance of the acid-treated clay to remove colour pigment from locally produced oil, four process variables namely, acid concentration, process contact time, adsorbent dosages and temperature were investigated. The variation of the process variables were in the order acid concentrations (1M, 2M, 3M, 5M); adsorbent dosages (1.0- 3.0g); reaction temperature (30-120?); and reaction time (5-60minutes). The results show that the bleaching efficiency of the activated clay increases with increase in acid concentration, temperature, contact time, temperature and adsorbent dosage. For acid concentrations, the bleaching efficiency increased with increase in acid concentration. However, there was only a slight difference between the bleaching efficiency of kaolin clay activated with 3M and that activated with 5M. Therefore, activated kaolin clay of 3M and 5M can be used with little or no difference in the bleaching efficiency. The result also shows that the optimal contact time for the bleaching process is 30 minutes at 120? for a dosage of 3g.

  Key-Words / Index Term
  Acid activation; kaolin clay; Crude palm oil; Acid concentrations; Adsorption; Ndemiyi; Unwana

  References
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  Citation
  R.E. Nnam, J.K. Anozie, N.J. Emerenini, N.U. Okoro, "Bleaching Efficiency of Ortho-Phosphoric Acid Activated Kaolin Clay Sample on Crude Palm Oil Colour Pigment Removal," International Journal of Scientific Research in Chemical Sciences, Vol.7, Issue.6, pp.12-20, 2020

• Open Access   Article

  Trace Element Analysis of Some Indigenous Antidiabetic Medicinal Plants of Assam

  B. Sarma

  Research Paper | Journal-Paper (IJSRCS)

  Vol.7 , Issue.6 , pp.21-25, Dec-2020

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  Abstract
  Medicinal plants contain different trace elements in bioavailable form. Various trace elements are reported to have very important role in the maintenance of normal blood glucose level. Elemental analysis was done in three selected indigenous antidiabetic plants namely: Catharanthus roseus, Ficus racemose, and Swertia chirata. Eight elements (Fe, Cu, Ni, Mn, Zn, Cr, Na, and K) were estimated using Flame Photometry and Atomic Absorption Spectroscopy (AAS) techniques. The mineral contents in the antidiabetic plants are at different levels. This present investigation has established that these antidiabetic plants contain appreciable quantities of some of the elements associated with blood glucose lowering effects.

  Key-Words / Index Term
  Diabetes mellitus, blood glucose, medicinal plant, trace element, mineral, micronutrients.

  References
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  Citation
  B. Sarma, "Trace Element Analysis of Some Indigenous Antidiabetic Medicinal Plants of Assam," International Journal of Scientific Research in Chemical Sciences, Vol.7, Issue.6, pp.21-25, 2020

• Open Access   Article

  Flotation Behaviour and Adsorption Mechanism of Green Reagent (Potassium salt of groundnut oil) to Gold-bearing ore

  Y.V. Adetula, J.A Ajayi, O.O. Alabi

  Research Paper | Conference-Paper (IJSRCS)

  Vol.7 , Issue.6 , pp.26-30, Dec-2020

  Abstract

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  Abstract
  The flotation behaviour and adsorption mechanism of green reagent (groundnut oil) to gold-bearing rock was investigated. Samples of the mineral were sourced from Iperindo deposit regions in Ilesha local government area, Osun State, Nigeria. The sourced samples were crushed, homogenized and sieved via 100% passing -63+45 ?m. The flotation behavior and adsorption via froth flotation concentration technique using green reagent (potassium salt of groundnut oil and groundnut oil) as flotation reagents. Flotation parameter used were pH value of 8.0, 8.5, 9.0, 9.5 and 10.0, at a pulp density of 50, 100, 150, 200 and 250 g/cm3, collector concentrations of 200, 300, 400, 500 and 600 mg/dm3 and agitation speed of 1200, 1250, 1300, 1350 and 1400 rpm respectively. Chemical analysis of the concentrate samples before and after froth flotation, revealed that the crude assaying of 103 ppm at -63+45 ?m has been successfully upgraded to 630 ppm Au at a recovery of 97.9% via a pulp density of 50 g/cm3, concentration of 600 mg/dm3, pH of 9 and agitation speed of 1350 rpm when potassium salts of groundnut oil was used as collector and groundnut oil as frother. Hence, this is the optimum froth flotation condition suitable for the recovery of gold ore. This show that potassium salt of groundnut oil is a potential flotation reagent for the flotation of minerals.

  Key-Words / Index Term
  green reagent, groundnut oil, gold, adsorption, flotation, mechanism

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  Citation
  Y.V. Adetula, J.A Ajayi, O.O. Alabi, "Flotation Behaviour and Adsorption Mechanism of Green Reagent (Potassium salt of groundnut oil) to Gold-bearing ore," International Journal of Scientific Research in Chemical Sciences, Vol.7, Issue.6, pp.26-30, 2020