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Browsing Volume 33 by Title

Browsing Volume 33 by Title

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  • Raw Mix Designing for Coal as a Fuel in Cement Kiln as a Major Fuel and its Impact on Clinker Parameters 
    NOOR-UL-AMIN; KHURSHID ALI (Karachi: The Chemical Society Of Pakistan, 2011-04-02)
    In this paper the use of coal, found at Jabba Taar and Jabba Khushk Khyber Pakhtoon Khwa, in cement manufacturing as a major fuel and its impacts on the raw mix and clinker parameters has been discussed. The maximum amount ...
  • Recycling of NiCd Batteries by Hydrometallurgical Process on Small Scale 
    KIM, YOUNG-JU; KIM, JI-HOON; THI, LIEN DUONG; QURESHI, TAHIR IMRAN (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2011-12-20)
    High recovery of cadmium metal from household spent nickel cadmium batteries through hydrometallurgical process on small scale was conducted. Recovery of metal through separation of leached metal ions using ion exchange ...
  • Reductive release of Fe(III) from Bovine Lactoferrin by Ascorbic Acid 
    SHAZIA NISAR; SYED ARIF KAZMI (Karachi: International Centre for Chemical and Biological Sciences, H.E.J. Research Institute of Chemistry, University of Karachi, 2011-02-07)
    The kinetics of the reduction of Fe3+ from bovine diferric Lactoferrin (Fe2Lf) and monoferric C-terminal (FeC-Lf) and N-terminal (Lf-FeN) sites is investigated at pH 6.1 and 3.5 under pseudo first-order conditions using ...
  • Removal of Alizarin Red S (Dye) from Aqueous Media by using Alumina as an Adsorbent 
    RABIA REHMAN; TARIQ MAHMUD; JAMIL ANWAR; MUHAMMAD SALMAN; UMER SHAFIQUE; WAHEED-UZ-ZAMAN; FURQAN ALI (Karachi: The Chemical Society Of Pakistan, 2011-04-16)
    Adsorption is potentially an attractive methodology for removing hazardous dyestuff and heavy metals from industrial effluents. In this work the removing efficiency of an industrially important dye Alizarin Red S from ...
  • REMOVAL OF MUREXIDE (DYE) FROM AQUEOUS MEDIA USING RICE HUSK AS AN ADSORBENT 
    Rabia Rehman; Jamil Anwar; Tariq Mahmud; Muhammad Salman; Umer Shafique; Waheed-Uz-Zaman (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2011-08-20)
    The use of low-cost and ecofriendly adsorbent was investigated as an ideal alternative to the current expensive methods of removing dyes from wastewater. Rice husk was used as an adsorbent for the removal of Murexide from ...
  • Removal of Reactive Blue 19 from Wastewaters by Physicochemical and Biological Processes-A Review 
    MARIA SIDDIQUE; ROBINA FAROOQ; ASHRAF SHAHEEN (Karachi: The Chemical Society Of Pakistan, 2011-04-26)
    The developments for the removal of reactive blue 19 dye (RB 19) by various physicochemical methods such as sonolysis, photocatalysis, electrochemical, ozonolysis, adsorption, hydrolysis and biological methods like microbial ...
  • Removal of Toxic Dichlorophenol from Water by Sorption with Chemically Activated Carbon of Almond Shells – A Green Approach 
    NADIA JAMIL; NAVEED AHSAN; MUNAWAR ALI MUNAWAR; JAMIL ANWAR; UMER SHAFIQUE (Karachi: The Chemical Society Of Pakistan, 2011-10-05)
    Chlorophenols (CP) represents a group of organic compounds having substituted chlorines attached to phenol ring. These trace organic pollutants represent a major environmental concern, because of toxicity, non-biodegradability, ...
  • Secondary Metabolites from Caragana ambigua 
    MAJIDA; REHAN KHAN; ITRAT FATIMA; AMAN KARIM; ABDUL MALIK; RASOOL BAKHSH TAREEN (Karachi: The Chemical Society Of Pakistan, 2011-10-18)
    A new naturally occurring pregnane derivative named as ambiguanol (1) has been isolated from ethyl acetate soluble sub-fraction of the ethanolic extract of Caragana ambigua along with E-cinnamic acid (2), β-sitosterol ...
  • Selective Acylation of Alcohols in the Presence of Phenols 
    MUHAMMAD RAZA SHAH; QAMAR ALI; ZAHID HUSSAIN; ITRAT ANIS (Karachi: International Centre for Chemical and Biological Sciences, H.E.J. Research Institute of Chemistry, University of Karachi, 2011-06-25)
    A versatile method of chemoselective acylation of alcohol has been developed by way of Mitsunobu based strategy. The reaction works under mild conditions and can be selectively employed in presence of phenolic groups and ...
  • Shake Flask Decolourization of Direct Dye Solar Golden Yellow R by Pleurotus ostreatus 
    KASHIF JILANI; MUHAMMAD ASGHER; HAQ NAWAZ BHATTI; ZAHID MUSHTAQ (Karachi: The Chemical Society Of Pakistan, 2011-04-13)
    Different on site treatment technologies are in practice for industrial wastewaters but bioremediation using white rot fungi is the most attractive option due to complete degradation of the pollutants to non toxic end ...
  • Spectrophotometric Assay of Clorazepate Dipotassium in Dosage Forms 
    AMINA MUMTAZ; ASRAR AHMED KAZI*; Rabia NAZIR; M. USMAN. SABRI; M. NAEEM. SHAHID (Karachi: International Centre for Chemical and Biological Sciences, H.E.J. Research Institute of Chemistry, University of Karachi, 2011-06-09)
    A new spectrophotometric method for the determination of clorazepate dipotassium in pure form and in pharmaceutical preparation has been developed. The method is based on the complex formation due to charge transfer between ...
  • Spectrophotometric Determination of pKa’s of 1-Hydroxybenzotriazole and Oxime Derivatives in 95% Acetonitrile-Water 
    MAGDA FOUAD FATHALLA; SHERINE NABIL KHATTAB (Karachi: International Centre for Chemical and Biological Sciences, H.E.J. Research Institute of Chemistry, University of Karachi, 2011-06-05)
    1-hydroxybenzotriazole derivatives are used with carbodiimide as additives to generate active esters during peptide bond formation. They are also used as additives during the peptide bond formation. Dissociation constants ...
  • Spectrophotometric Quantification of Antioxidant Phytochemicals in Juices from Four Different Varieties of Citrus limon, Indigenous to Pakistan 
    MUHAMMAD KALEEM KHOSA; SHAHZAD ALI SHAHID CHATHA; ABDULLAH IJAZ HUSSAIN; KHALID MAHMOOD ZIA; HIBA RIAZ; KINZA ASLAM (Karachi: The Chemical Society Of Pakistan, 2011-04-09)
    This research work was carried out to quantify the total phenolics, flavonoids and carotenoides, vitamin C contents, reported as antioxidants, in juices of four varieties of Pakistani Citrus limon. Juice was extracted from ...
  • Stabilization of Hydrogen Peroxide used as Oxidizing Agent in the In-situ Leaching of Uranium from Arkosic Sandstone 
    YAHYA KHAN; ABBAS KHAN; SYED SAKHAWAT, SHAH; GULZAR HAMID; GULRAIZ FATIMA; MUHAMMAD SIDDIQ (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2011-08-20)
    H2O2 was used as oxidizing agent of the insoluble tetravalent uranium into the soluble hexavalent state along with NH4HCO3 as complexing agent in tap water solvent. The study was conducted to look at the possibility of ...
  • Studies of Antifungal Activity of Forsskalea tenacissima 
    MUHAMMAD QAISAR; VIQAR UDDIN AHMAD; MOHAMMAD NISAR; SYED NAEEMUDDIN GILANI; SAMREEN PERVEZ (Karachi: The Chemical Society Of Pakistan, 2011-10-14)
    Antifungal activity of different extracts from Forsskalea tenacissima prepared by solvent-solvent extraction and vacuum liquid chromatography (VLC) was determined. Extracts were found to be active against Candida albicans, ...
  • Studies on Contamination Level of Aflatoxins in Pakistani Rice 
    ARSHAD HUSSAIN; JAVED ALI; SHAFQATULLAH (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2011-08-20)
    Aflatoxins (AF) are highly toxic and carcinogenic secondary fungal metabolites and have been detected in various food commodities including cereals. Rice samples collected during 2008–2009 were analyzed for aflatoxin ...
  • Study of CO Hydrogenation Reaction on Cobalt Titania Catalyst 
    HOSSEIN ATASHI; HAMED GHAREHBAGHI (Karachi: International Centre for Chemical and Biological Sciences, H.E.J. Research Institute of Chemistry, University of Karachi, 2011-02-02)
    CO hydrogenation on the cobalt catalyst with Titania support (Co/TiO2) without reduction condition and with a fixed-bed differential cylindrical reactor was kinetically studied. Internal and external mass transfer resistances ...
  • Study of Lead Pollution in Air, Soil and Water Samples of Quetta City 
    MUZAFFAR KHAN; KHAN, GHULAM MUSTAFA; SHER AKBAR; PANEZAI, MUHAMMAD ANWAR; TALAT ZAMIR; ZIA-UL-HAQ (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2011-12-20)
    This study briefly presents the collected data of lead pollution in the environment of Quetta City in Balochistan, Pakistan .The samples were collected from different sites. The analysis of lead was carried out in underground ...
  • Study on Accumulation of Heavy Metals in Vegetables Receiving Sewage Water 
    SAJIDA PERVEEN; IHSAN IHSANULLAH; ZIAUDDIN SHAH; WAJAHAT NAZIF; SYED SADAQAT SHAH; HAMEEDULLAH SHAH (Karachi: The Chemical Society Of Pakistan, 2011-04-15)
    A study was conducted to evaluate heavy metals content of sewage water and its impact on soil and vegetables. Thirty samples each of water, soil, and vegetable leaves and twenty-one samples of edible vegetable portions ...
  • The Sulfide Oxidation in an Electrolytic Sulfide Oxidizing Bioreactor using Graphite Anode 
    WU, DONGLEI; WU, LILI; HU, QINHAI; QAISAR MAHMOOD; KHAN, AFSAR (Karachi: International Centre for Chemical and Biological Sciences, H.E.J. Research Institute of Chemistry, University of Karachi, 2011-02-08)
    The goal of the present research was the direct conversion of sulfide (an important contaminant in various industrial wastewaters) to sulfate, whose discharge limits are much less stringent than those for sulfide. The ...

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