Research Papers/Topics in Industrial Chemistry

Effect of Asystasia Gangeticum (Atu ukwara) Leaves Extract on Fermentation Kinetics of Elaeis Guineensis (Palm wine)

The kinetic studies of Elais guineensis sap is of major important in determining the extent of preservation of palm wine, since production is highest in the rainy season. The effect of 0.1, 0.2, 0.4, 0.8 and 1.6% Asystasia gangeticum leaves extract (in order to inhibit the activities of microbes during fermentation of E. guineensis sap) on the rate of palm wine fermentation, using 100 mL portion of fresh palm sap was determined. The rate of fermentation is measured as the rate of carbon dioxi...

Evaluation of Anti-tussive Activity and Phytochemical Screening of Stem of White Yam (Dioscorea rotundata) Grown in Oghe Community, Enugu State, Nigeria

Dioscorea rotundata plant stem is an oral paste used for controlling persistence cough and hiccups in Oghe Traditional medical practices. In order to ascertain the extent of activity around its medicinal use, the anti-tussive activity and phytochemical screening of D. rotundata stem extracts were evaluated. The anti-tussive activity was studied on guinea pigs dosed with citric acid fumes. Phytochemical studies using simple chemical tests and TLC analysis were carried out on the stem extracts....

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 ...

Synthesis and Characterization of New Complex Heterocyclic Ring Systems of Industrial Importance

Abstract: The synthesis and characterization of new complex monoaza and pentaaza angular phenothiazine derivatives is reported. The first derivative, 6,10-dichloro-17-azadibenzo[a,n]triphenodithiazin-5,11-dione 10 was obtained by a basecatalyzed reaction of 2,6-diaminopyridine-3,5-dithiol 5 and 2,3-dichloro-1,4-naphthaquinone 9, while the second derivative, 7,9,15,17-tetraamino-6,8,16,18,25-pentazadibenzo[a,n]di([1,4]benzothaizino[3,2-c,l])triphenodiathizine 11 was obtained by the reaction...

Biochemical Role of Vitamin A in Vision

1.0 INTRODUCTION Vitamin A is a group of unsaturated nutritional organic compounds that includes retinol, retinal, retinoic acid, and several provitamin  A carotenoids  (most notably beta-carotene). Vitamin A has multiple functions: it is important for growth and development, for the maintenance of the immune system and good vision (Fennema, 2018). Vitamin A is needed by the retina of the eye in the form of retinal, which combines with protein opsin to form rhodopsin, the ...

SORPTION PROPERTIES OF HYDROLYZED STARCH GRAFT COPOLYMERS IN THE REMOVAL OF CADMIUM (II) AND COPPER (II) IONS FROM AQUEOUS MEDIA

Sorption properties of hydrolyzed starch graft poly (acrylic acid) andstarch graft poly(acrylonitrile) copolymers as sorbents for the removal ofCd (II) and Cu(II) ions from aqueous solution in batch process wereassessed. The copolymers were prepared using methods as reported inliterature and were characterized in terms of morphology using scanningelectron microscopy, confirmation of sorbents produced using Fouriertransform infrared spectroscopy and thermal stability usingthermogravimetric ana...

Assessment of the Effect of Hydrolysed Starch Graft CopolymersApplication on Soil Nutrient (Phosphorus and Nitrogen) Retention

The effects of the application of the graft copolymers (Hydrolyzed starch-g-polyacrylonitrile (HSPAN) andHydrolyzed starch-g-polyacrylic acid (HSPAA)) on the nitrogen (N) and phosphorus (P) retention capacity of soil wasevaluated in this study. Soil nutrient (N and P) retention capacity tests was carried out at three graft copolymersapplication rates (3.0, 6.0, and 9.0g/kg soil) against a blank soil sample to which graft copolymers was not applied.Diammonium phosphate (DAP) at 0, 100, and 200...

Response Surface Methodology for the Competitive Sorption of Metal ions from Aqueous Medium using Starch-Graft-Copolymer

The competitive sorption of Cu (II), Pb (II) and Cd (II) by graft copolymer of cassava starch and acrylic acid was investigated using the response surface methodology. Optimization of the medium conditions was studied through experimental design. Response surface methodology including central composite design was successfully applied to develop a response surface to optimize the medium conditions. The most influential medium parameters were determined as initial concentration, contact time an...

Equilibrium, Kinetic and Thermodynamic Studies Of Lead (II) Sorption on Hydrolyzed Starch Graft Copolymers

Hydrolyzed starch graft poly (acrylic acid) andstarch graft poly(acrylonitrile) copolymers were used as asorbents for the removal of Pb(II) from aqueous solution inbatch process. The sorbents were characterized by scanningelectron microscopy, Fourier transform infrared spectroscopyand thermogravimetric analysis. The effect of contacttime, initial concentration and temperature were assessed tooptimize the conditions for maximum sorption of the metalions. The experimental data were analyzed by ...

COMPETITIVE SORPTION OF Cd (II), Pb (II) AND Cu (II) IONS ON HYDROLYZED STARCH GRAFT COPOLYMERS

Hydrolyzed starch graft copolymers of acrylic acid and acrylonitrile were used as a sorbents for the competitive removal of Pb (II), Cd (II) and Cu (II) ions from aqueous solution in batch process. The sorbents were characterized by scanning electron microscopy, Fourier transform infrared spectroscopy, wide-angle x-ray diffractometer and thermogravimetric analysis. The equilibrium sorption properties were assessed to optimize the conditions for maximum competitive sorption of the metal ions. ...

Effects of Snail Shell as Filler on the Mechanical Properties of Terephthalic Unsaturated Polyester Resin

The mechanical properties of snail shell reinforced unsaturated polyester composite was assessed in this study. Ground snail shells of particle size 65μm were introduced at different percentages into the unsaturated polyester resin. The powdered shells were characterized using FTIR to determine the functional groups present. The tensile test was performed using an Instron universal testing machine operated at a cross head speed of 10mm/min. The tensile test specimen preparation and testing p...

EFFECTS OF POLYETHYLENE GLYCOL AS ALTERNATIVE ACTIVATOR IN A BAMBOO FIBRE FILLED NATURAL RUBBER COMPOSITE

There is a growing interest in the research community of the possibility of reducing or totalelimination of zinc oxide (ZnO) as activator in rubber compounds. This study therefore is anattempt in that direction to study the effect of polyethylene glycol (PEG) as an alternativeactivator in rubber compounds. Various levels of polyethylene glycol (0,2,3,4,5,6 phr) and zincoxide (as reference) were compounded with 100phr of natural rubber and other compoundingadditives. The effects of both polyet...

Jatropha Tanjorensis Leaf Extract as an Environmentally Friendly Mild Steel Corrosion Inhibitor in Acidic Medium

Abstract : The inhibition of the corrosion of mild steel in 1 M H2SO4 solution by Jatropha tanjorensis leaf extract (JTLE) has been studied using weight loss and hydrogen evolution techniques. The results obtained reveal that JTLE effectively inhibited the corrosion of mild steel in H2SO4 solution. The highest inhibition efficiency of 89.73% occurred at 5.0 g/L JTLE concentration at 333K by weight loss measurements. Inhibition efficiency was found to increase with increase in JTLE concent...

TECHNICAL REPORT ON STUDENTS´ INDUSTRIAL WORK EXPERIENCE SCHEME HELD AT CEMENT COMPANY OF NORTHERN NIGERIA SOKOTO, SOKOTO STATE

TABLE OF CONTENTSTitle…………………………………………………………………………………………………………………………………………1Dedication……………………………………………………………………………………………………………………………….2Acknowledgement…………………………………………………………………………………………………………………...3Table of conte...