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Zeid A. AlOthman,Mohammad Mezbaul Alam,Mu. Naushad 한국공업화학회 2013 Journal of Industrial and Engineering Chemistry Vol.19 No.3
Nernst–Planck equation was applied to study the heavy metal ion exchange kinetics over the surface of nylon 6,6 Zr(IV) phosphate at various temperatures under particle diffusion controlled phenomena. Various useful ion exchange kinetic parameters such as self-diffusion coefficient (Do), energy of activation (Ea), and entropy of activation (DS*) were evaluated to validate the ion exchange process for practical applicability of this composite cation exchanger in remediation processes of the environment. This study is also supported for the good selectivity of Cu(II) to validate the practical application of this cation exchanger in environmental analysis.
Saikh M. Wabaidur,Zeid A. AlOthman,Masoom R. Siddiqui,Kazi Mohsin,Leda G. Bousiakou,George A. Karikas 한국공업화학회 2015 Journal of Industrial and Engineering Chemistry Vol.24 No.-
Ultra performance liquid chromatography–mass spectrometry (UPLC–MS) method has been developed for the simultaneous determination of pharmaceuticals in industrial waste water samples. The binary mobile phase was used a mixture of acetonitrile and 0.1% aqueous solution of formic acid at a flow rate of 0.4 ml min1. Identification and quantitation of the analyzed drug samples were carried out using mass spectrometer equipped with electrospray ionization source operated in negative ionization mode. The linear range of the proposed method was found to be in the range of 18–270 ng ml1 for all drugs with limit of detection in the range of 1.25 to 1.89 ng ml1.
Choi, Goeun,Piao, Huiyan,Alothman, Zeid A,Vinu, Ajayan,Yun, Chae-Ok,Choy, Jin-Ho DOVE MEDICAL PRESS 2016 INTERNATIONAL JOURNAL OF NANOMEDICINE Vol.11 No.-
<P>Methotrexate (MTX), an anticancer agent, was successfully intercalated into the anionic clay, layered double hydroxides to form a new nanohybrid drug. The coprecipitation and subsequent hydrothermal method were used to prepare chemically, structurally, and morphologically well-defined two-dimensional drug-clay nanohybrid. The resulting two-dimensional drug-clay nanohybrid showed excellent colloidal stability not only in deionized water but also in an electrolyte solution of Dulbecco’s Modified Eagle’s Medium with 10% fetal bovine serum, in which the average particle size in colloid and the polydispersity index were determined to be around 100 and 0.250 nm, respectively. The targeting property of the nanohybrid drug was confirmed by evaluating the tumor-to-blood and tumor-to-liver ratios of the MTX with anionic clay carrier, and these ratios were compared to those of free MTX in the C33A orthotopic cervical cancer model. The biodistribution studies indicated that the mice treated with the former showed 3.5-fold higher tumor-to-liver ratio and fivefold higher tumor-to-blood ratio of MTX than those treated with the latter at 30 minutes postinjection.</P>
양송희,샤비,정원조,Zeid A. AlOthman,Abdullah M. ALMajid 대한화학회 2012 Bulletin of the Korean Chemical Society Vol.33 No.5
In this study, we have expanded the applicability of the pre-established generalized preparation protocol to MIPs with a neutral template. The (4S,5R)-4-methyl-5-phenyl-2-oxazolidinone MIP layer was formed inside a pretreated and silanized fused silica capillary, and its chiral separation performance was examined. Optimization of chiral separation was also carried out. This is the very first report of somewhat successful application of the generalized preparation protocol to a MIP with a genuine neutral template.
Ali H. Jawad,Ahmed Saud Abdulhameed,M. A. K. M. Hanafiah,Zeid A. AlOthman,Mohammad Rizwan Khan,S. N. Surip 한국화학공학회 2021 Korean Journal of Chemical Engineering Vol.38 No.7
Sulfonated pomegranate (Punica granatum) peel biochar (SPPBC) was developed via thermal activation with sulfuric acid (H2SO4) to act as a promising biochar material for the adsorptive removal of toxic cationic dye namely methylene blue (MB) dye from contaminated water. A Box-Behnken design (BBD) and numerical desirability function were adopted to optimize the input adsorption variables (SPPBC dosage, temperature, pH, and contact time). The maximum removal of the MB dye can be accomplished by simultaneous significant interaction between SPPBC dosage with solution pH, SPPBC dosage with time, SPPBC dosage with temperature, solution pH with time, and time with temperature. The numerical desirability function identified the highest MB dye removal (93.9%) can be achieved at the following optimum numerical adsorption conditions: SPPBC dosage 0.18 g, temperature 49 oC, pH 9.7, and time 4.3 h. Equilibrium data were well fitted to the Temkin and Langmuir isotherm models. The maximum recorded adsorption capacity of SPPBC for MB dye adsorption by using Langmuir isotherm model was 161.9mg/g. This research work reveals the possibility of converting lignocellulose pomegranate peel into a renewable and environmentfriendly biochar via a relatively fast acid-activation process with the great potential to be promising adsorbent for removal of MB dye.
Yang, Song-Hee,Zaidi, Shabi Abbas,Cheong, Won-Jo,ALOthman, Zeid A.,ALMajid, Abdullah M. Korean Chemical Society 2012 Bulletin of the Korean Chemical Society Vol.33 No.5
In this study, we have expanded the applicability of the pre-established generalized preparation protocol to MIPs with a neutral template. The ($4S,5R$hyl-5-phenyl-2-oxazolidinone MIP layer was formed inside a pretreated and silanized fused silica capillary, and its chiral separation performance was examined. Optimization of chiral separation was also carried out. This is the very first report of somewhat successful application of the generalized preparation protocol to a MIP with a genuine neutral template.
Tansir Ahamad,Mu. Naushad,Basheer M. Al-Maswari,Jahangeer Ahmed,Zeid A. AlOthman,Saad M. Alshehri,Ayoub Abdullah Alqadami 한국공업화학회 2017 Journal of Industrial and Engineering Chemistry Vol.53 No.-
A mesoporous magnetic zirconium phosphate was prepared for the removal of Hg2+ from aqueous medium. The saturation magnetization of pure Fe3O4 and Fe3O4@ZrP was observed 82.9 and 62.4 emu/g, respectively. The effect of different adsorption parameters was studied. The kinetic data were fitted to the pseudo 1st and pseudo 2nd order models whereas the adsorption process was best fitted into the pseudo 2nd order model. The adsorption isotherm could be well described with Langmuir model, with the maximum adsorption capacity of 181.8 mg g1 at 25 C. Thus, the present studies suggested that Fe3O4@ZrP have remarkable potential for Hg2+ removal from contaminated water.
Mohamed Abdelaty Habila,Zeid Abdullah ALOthman,Saad A. Al-Tamrah,Ayman Abdel Ghafar,Mustafa Soylak 한국공업화학회 2015 Journal of Industrial and Engineering Chemistry Vol.32 No.-
The widespread use of pesticides leads to considerable attention for pesticide detection and removal. Therefore, in the first part of this work, a simple and facile solid phase extraction (SPE) procedure forseparation of malathion from soil and water samples, has been established. Malathion was recovered at apH of 2.0–3.0 with limit of detection (LOD) of 0.026 ng L 1. While in the second part, the kinetics of thebatch adsorption removal of malathion from aqueous solutions was investigated. Results showed thatmalathion adsorption onto activated carbon followed second order kinetics models most appropriatelywith adsorption capacity of 32.1 mg g 1.
Mohammad Mezbaul Alam,Zeid A. AlOthman,Mu. Naushad 한국공업화학회 2013 Journal of Industrial and Engineering Chemistry Vol.19 No.6
Two organic–inorganic type composite materials were prepared via the incorporation of organic conducting polymers into the inorganic precipitates of multivalent metal acid salts to explore their analytical and environmental applications. Vital uses of these materials for the analyses of water pollution were demonstrated by the quantitative separation of Cd2+ and Hg2+ from some synthetic and real samples onto their columns. Separation and determination of Zn2+ and Fe2+ in the pharmaceutical preparations were also performed. The adsorption behavior of dichlorvos (insecticide) on the surface of polyaniline Sn(IV) tungstoarsenate was studied which indicating its usefulness in the decrease of environmental pollution load.
Mohammad Mezbaul Alam,Zeid A. AlOthman,Mu. Naushad,Taieb Aouak 한국공업화학회 2014 Journal of Industrial and Engineering Chemistry Vol.20 No.2
In this study, the ion exchange kinetics of selected heavy metals such as Cd, Cu, Pb and Zn through thepyridine based thorium(IV) phosphate composite cation exchange material was studied. The ionexchange kinetics over this composite cation exchanger followed the particle diffusion controlled ionexchange phenomenon. Kinetics parameters also revealed that the mechanism of ion exchange for heavytoxic metal ion is feasible to explore the wastewater treatment.