Science Journal of Chemistry

Volume 5, Issue 6, December 2017

  • Kinetics and Mechanism of the Redox Reaction of Naphthol Green B with Hydrazine Dihydrochloride in Aqueous Acidic Medium

    B. Myek, S. O. Idris, J. F. Iyun

    Issue: Volume 5, Issue 6, December 2017
    Pages: 76-79
    Received: Mar. 07, 2017
    Accepted: Mar. 18, 2017
    Published: Nov. 22, 2017
    Abstract: The kinetics of the redox reaction between naphthol green B and hydrazine dihydrochloride has been studied in aqueous hydrochloric acid medium at an ionic strength, I = 0.50 mol dm-3(NaCl), [H+] = 1.0×10-4 moldm-3 (HCl) and T = 21±1°C. The redox reaction displayed a stoichiometry of 1:1 and obeys the rate law: -d[NGB3-]/dt=k2[NGB3-][N2H4.2HCl]. Cha... Show More
  • Extraction and Spectrophotometric Assay of Yttrium (III) with TOPO, Application to Water Samples and Alloys

    Salim Ali Mohammad, Samiea Yaseen Sharaf Zeebaree

    Issue: Volume 5, Issue 6, December 2017
    Pages: 80-86
    Received: Oct. 18, 2017
    Accepted: Nov. 06, 2017
    Published: Nov. 29, 2017
    Abstract: An easy, accurate, selective and sensitive method for extraction and spectrophotometric determination of yttrium (III) in aqueous solution has been determined. The procedure is based on the extract of yttrium (III) with Trioctylphosphine oxide (TOPO) reagent from the aqueous medium followed reaction of extracted yttrium (III) in organic layer with ... Show More
  • Electrochemical Water Treatment Technology in Viet Nam: Achievement & Future Development

    Tran Tan Tien, Duong Hieu Linh, Luong Tan Vu, Pham Thi Thanh Hoa, Nguyen Thi Thanh Phuong, Tran Le Luu

    Issue: Volume 5, Issue 6, December 2017
    Pages: 87-94
    Received: Oct. 26, 2017
    Accepted: Nov. 09, 2017
    Published: Dec. 01, 2017
    Abstract: Electrochemical technology is a promising technique for water and wastewater treatment in the world. This technology has many advantages as compact model, saving area, highly removal efficient of non-biodegradable compounds, reduction of secondary by-products. There are some different electrochemical techniques such as electroflotation; electrocoag... Show More
  • Arsenic Treatment in Groundwater in Mekong Delta Using Laterite Absorbent

    Nguyen Thi Thanh Phuong, Duong Thi Kieu Trang, Tran Le Luu

    Issue: Volume 5, Issue 6, December 2017
    Pages: 95-100
    Received: Oct. 12, 2017
    Accepted: Oct. 23, 2017
    Published: Dec. 12, 2017
    Abstract: Arsenic contamination in groundwater has led to pandemic influenza and many disease in Viet Nam and its neighbour country. It is estimated that about 57 million people in the world are affected by Arsenic contamination in drinking water. In Viet Nam, especially in Mekong River Delta, the Arsenic was detected in drinking water is up to 3000 μg/l, ma... Show More