Research Papers/Topics in Industrial Chemistry

Kinetics And Mechanisms Of The Electron Transfer Reactions Of The Μ-Oxo- Bridged Iron(Iii) Complex, Na4[(Feedta)2o].12h2o With Some Thiols

ABSTRACTThe kinetics and mechanisms of the redox reactions of μ-oxo-bridged iron(III) complex ionNa4[(FeEDTA)2 O].12H2O denoted as Fe2 O4+, with the thiols-2-mercaptobenzothiazole(MBSH), 2-mercaptophenol(PhSH), 2-mercaptoacetic acid (MSH), and l-cysteine (RSH) have been investigatedin aqueous perchloric acid medium at [H+]=1×10-4 mol dm-,3,I=0.05mol dm-3(NaClO4) and at T=27.0±0.1oC. The reactions were monitored under pseudo-first order condition .The rate of reactionwas first-order in redu...

Quality Characteristics Of Underground Water Resources In Nkanu East And Nkanu West Local Government Areas Of Enugu State, Nigeria

ABSTRACTPhysicochemical and bacteriological analyses of underground water resourcesin Nkanu East and Nkanu West Local Government Areas of Enugu state,Nigeria were carried out to evaluate the potability and quality of the rural watersupplies and to provide baseline data for future quality assessment.Underground water samples were collected from ten different boreholes inNkanu East and Nkanu West LGAs. The parameters measured includetemperature, colour, pH, electrical conductivity, turbidity, t...

Assessment Of Two Local Plant Dyes As Colourants For Petroleum Products (Petrol, Kerosene And Diesel)

ABSTRACTDyes from Pterocarpus osun Craib and Lawsonia inermis Linn. were extractedusing ethanol and methanol respectively. The extracted dyes were subsequentlypurified using chromatographic methods. Purified pigments were characterizedusing Ultra-Violet Visible Spectrophotometer, Fourtier Transform InfraredSpectrophotometer and Lovibond Tintometer. The UV spectra of the dyes inpetrol, kerosene and diesel showed presence of chromophores. The FTIRspectra of the dyes showed presence of phenolic ...

Physico-Chemical And Toxicological Profiles Of Five Species Of Mushroom In Anambra State, Nigeria And Their Potential For Bioremediation Of Trace Metal Polluted Soil

ABSTRACTFive species of Mushroom namely Termitomyces robustus, Agaricus bisporus,Pleurotus tuber-regium, Amanita phalaoides and Amanita verosa were collected fromeleven locations in Uke, Abatete, Ideani, Nnobi, Nnewi (Okpuno-egbu), Nnewi(Umudim) and Ozubulu between 2009 and 2012 in Anambra State, Nigeria. Theywere kept in clean collection bags and identified by a taxonomist. Some of themushroom samples were later oven dried at 75 0 C for 4 hours and kept for chemicalanalysis while some were u...

Solvent Extraction Studies on Zn(II) AND Cd(II) Complexes OF 1,5-Dimethyl-2-Phenyl-4[(E)-(2,3,4- Trihydroxyphenyl)]DIAZENYL-1,2-Dihydroxyl-3hpyrazol-3-ONE.

ABSTRACT The azo-ligand, 1,5-dimethyl-2-phenyl-4-[(E)-(2,3,4-trihydroxylphenyl) diazenyl]- 1,2-dihydro-3H-pyrazol-3-one (H3L) and its Zn(II) and Cd(II) complexes have been synthesized and characterized based on stoichiometric, molar conductance, electronic and infra-red spectral studies. The results showed that H3L reacted with the metals in 2:1 ratio. H3L coordination was through the hydroxyl, azo and carbonyl groups to form [Zn(H2L)2] 2+ and [Cd(H2L)2] 2+ respectively. Solvent extra...

Physico-Chemical Studies of the Lower River Niger

AbstractThe pollution of rivers and lakes by n~tural and human activities is causing some concern thc world over because of the problems it poses to mankind's existence 2 (~epple, ,973'; Hakanson, 1974 ; Bryce-jmitl , 1975~; 4 Hodges, 1977 ; Sada et al, 1%a5, Faculty of Law, 6 University of Ibadan 1988 , His Holiness, Pcpe John Paul XI, 1 9w7). Industrial wheels and products, natural disasters such as floods, explosions and earthqunkcs 1 we continued to pollute the environment includ...

Physiochemical And Bacteriological Analyses of Borehole Waters in Aninri, Awgu And Oji River Local Government of Enugu State, Nigeria

ABSTRACT Physicochemical and bacteriological analyses of borehole water samples were randomly collected from ten boreholes that supply drinking water to various communities of Aninri, Awgu and Oji River Local Government Areas of Enugu, Nigeria. The boreholes were sampled in both dry and rainy seasons. The following physicochemical parameters: pH, temperature, colour, electrical conductivity, turbidity, total dissolved solids, hardness, calcium, magnesium, sodium, potassium, alkalinity,...

Comparative Analysis of Acid Activated Nteje Clay And Two Commercially Available Adsorbents(Fullers Earth And Activated Carbon)

ABSTRACT The composition and bleaching properties of Nteje clay in comparison with two commercially available adsorbents (activated carbon and fuller’s earth) were investigated to study its competence for use as an alternative to high cost imported adsorbents. The modification of the raw clay sample was carried out by acid activation to enhance the surface area of the clay by exchange of octahedral cations e.g Al3+, Fe3+ and Mg2+ with H+ ions which led to the modification of the clay ...

Palladium–Catalyzed Sonogashira Synthesis of Mono And Bisalkynylated Derivatives of Quinoline-5,8-Dione And Their Antimicrobial Activity

ABSTRACT The synthesis of five mono- and five bis-alkynylated derivatives of quinoline-5,8-diones is reported. The intermediate 6,7-dibromoquinoline-5,8-dione was obtained by nitrosation of 8- hydroxyquinoline, followed by reduction and subsequent bromination and oxidation. The coupling reaction of 6,7-dibromoquinoline-5,8-dione via palladium-catalyzed Sonogashira cross-coupling gave the alkynylated products. The chemical structures of the products were confirmed using spectroscopic met...

The Potentials of AdAnsonia Digitata Root And Stem Powders And Stem Activated Carbon as Low-Cost Adsorbents For The Removal of Heavy Metals From Aqueous Solutions

ABSTRACT&nbsp;&nbsp; The potentials of Adansonia digitata root (ADRP) and stem powders (ADSP) and the stem activated carbon (ADSAC) for adsorption of Pb2+, Cd2+, Cu2+ and Co2+ from aqueous solutions were investigated. The activated carbon was prepared via chemical activation using ZnCl2 as the activating agent. Physico-chemical analysis of the adsorbents (ADRP, ADSP and ADSAC) showed the moisture contents (< 20 %), volatile matter (9.2 - 11.2 %), ash content showed < 5.0 %, fixed carbon...

The Effect Of Temperature, Catalysis, And Dielectric Constant In The Kinetics Of The Oxidation-Reduction Reactions Of [N-(2-Hydroxy-Ethyl)Ethylenediamine-N’,N’,N’,-Triacetato Cobalt (11)] B

ABSTRACT The effects of temperature, dielectric constant and catalysis in the kinetics of the oxidation –reduction reactions (involving electron transfer) of N-(2-hydroxy-ethyl) ethylenediammine- N’,N’,N’-Triacetatocobalt (II) by Cu2+ cation were determined.  The dielectric constant was decreased from 63.05 to 43.18 and it was found that the rates of the reaction did not show any appreciable change. This seems to mean that the change in the dielectric constant of the medium...

SYNTHESIS, CHARACTERIZATION AND PRELIMINARY ANTIMICROBIAL STUDIES OF SOME SCHIFF BASE LIGANDS AND THEIR Co(II), Mn(VII), Mo(VII) COMPLEXES

ABSTRACTThe synthesis, characterization and preliminary antimicrobial studies of some novel Schiff base ligands;  N,N/ - Bis(2-hydroxybenzylidene)-1,4-phenylenediimine(M) and N,N/ - Bis(4-dimethylaminobenzylidene)-1,4-phenylenediimine (N)  were undertaken. It was prepared by the condensation reaction of 1,4-phenylenediamine with 4-dimethylaminobenzadehyde and 2-hydroxybenzaldehde .Their Co(II), Mn(VII), Mo(VII) metal complexes were synthesized by coupling them respectively with the in...

Isolation And Characterisation Of Secondary Metabolites From Dioclea Reflexa (Hook F.) And Cussonia Arborea (Hochst)

ABSTRACT The discovery of bioactive natural products is a basis for development of novel pharmaceuticals. Indigenous medicinal plants which are largely unexplored offer chemical diversity with structural complexity and biological potency. Despite their ethnomedicinal usage, there is little information on the bioactive components of Dioclea reflexa and Cussonia arborea. This study was designed to isolate and characterise the secondary metabolites from the roots of D. reflexa and C. arbor...

ASSESSMENT OF HEAVY METALS IN NIGERIAN VEGETABLES AND SOILS IN OWO AND EDO AXES USING X-RAY FLUORESCENCE (XRF) TECHNIQUE

ABSTRACTThe soils and leaves of fluted pumpkin (Telfairia occidentalis), African spinach, "Green" (Amaranthus hybridus) and water leaf (Talinum triangulare) were collected as randomly composite samples from four (4) different study locations of two (2) each from Owo Local Government Area and Etsako-West Local Government Area. The samples were examined for heavy metal concentrations, using X-ray fluorescence (XRF) technique. Chromium (Cr), zinc (Zn), manganese (Mn), iron (Fe), titanium (Ti), s...

Cyclohexane Oxidation in a Series of Stirred Tank Reactors Zuay Arustribasto, Sakbarningruam Yatmazati

Pengembangan Teknologi Kimia untuk Daya Alam Indonesia Yogyakarta, 5 2014 Hak Cipta ada pada Program Studi Teknik Kimia Teknologi Industri UPN “Veteran” Yogyakarta Jl. SWK 104 (Lingkar Utara) Condongcatur, Yogyakarta (55283) Dilarang mengutip sebagian atayhu seluruh buku ini atau diperbanyak dengan tujuan komersial dalamre bentuk apapun tanpa seign Program Studi szeknik Kimia Fakultas Teknologi Industri UPN “Veteran” Yogyakarta, kecuali untuk keperluan ...


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