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43 kirjaa tekijältä Hency Thacker; Vijay Ram

Phytofabrication of silver nanoparticles

Phytofabrication of silver nanoparticles

Hency Thacker; Vijay Ram

Scholars' Press
2020
pokkari
Nanoparticles are considered as fundamental of Nanoscience and nanotechnology. Physical, chemical and biological methods employed for nanoparticles synthesis can be mainly categorized into Top-down and bottom-up approach. Synthesis of nanoparticles via plant extracts is a biological method that fall under bottom up approach category. The present review covers advantages and disadvantages of various physical and chemical methods used for nanoparticles synthesis, advantages of plant mediated synthesis over other methods, various plant extracts used for the fabrication of silver nanoparticles and their application. It also includes brief glimpse on characterization techniques for nanoparticles and effect of operational parameters on size, size distribution and morphology of nanoparticles.
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Adsorption of Cu2+ on Phoenix Dactylifera L. leaves

Adsorption of Cu2+ on Phoenix Dactylifera L. leaves

Hency Thacker; Vijay Ram

SCHOLARS' PRESS
2023
pokkari
This book describes adsorption of cupric ions on Phoenix Dactylifera L. leaves is described. The adsorption phenomena is found to be dependent on pH, adsorbent dose, initial concentration, temperature and agitation time. Further this process was evaluated by adsorption isotherms namely langmuir, Fruendlich, Temkin, Hasley, Jonovaic and so. Kinetic models pseudo first order, pseudo second order, Elovich, Intra-particle diffusion are also evaluated. The optimum conditions for cupric ion uptake were found to pH=1.5, adsorbent dose =0.2 gm, initial concentration= 10ppm, agitation time =30 minutes . The adsorption is best described by Temkin adsorption isotherm model and pseudo second order kinetic model. The maximum adsorption capacity was evaluated to be 2.48 mg/g.
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Adsorption von Cu2+ an Blättern von Phoenix Dactylifera L.

Adsorption von Cu2+ an Blättern von Phoenix Dactylifera L.

Hency Thacker; Vijay Ram

Verlag Unser Wissen
2023
pokkari
In diesem Buch wird die Adsorption von Kupfer-Ionen auf den Bl ttern von Phoenix Dactylifera L. beschrieben. Es wird festgestellt, dass die Adsorptionsph nomene vom pH-Wert, der Adsorptionsmitteldosis, der Anfangskonzentration, der Temperatur und der R hrzeit abh ngig sind. Ferner wurde dieser Prozess mit Hilfe von Adsorptionsisothermen, n mlich Langmuir, Fruendlich, Temkin, Hasley, Jonovaic und so weiter, bewertet. Die kinetischen Modelle pseudo erster Ordnung, pseudo zweiter Ordnung, Elovich und Intrapartikeldiffusion wurden ebenfalls ausgewertet. Die optimalen Bedingungen f r die Aufnahme von Kupferionen sind pH = 1,5, Adsorptionsmitteldosis = 0,2 g, Anfangskonzentration = 10 ppm, R hrzeit = 30 Minuten. Die Adsorption wird am besten durch das Temkin-Adsorptionsisothermenmodell und das kinetische Pseudo-Modell zweiter Ordnung beschrieben. Die maximale Adsorptionskapazit t wurde mit 2,48 mg/g ermittelt.
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Adsorption de Cu2+ sur feuilles de Phoenix Dactylifera L.

Adsorption de Cu2+ sur feuilles de Phoenix Dactylifera L.

Hency Thacker; Vijay Ram

Editions Notre Savoir
2023
pokkari
Cet ouvrage d crit l'adsorption des ions cuivriques sur les feuilles de Phoenix Dactylifera L. Le ph nom ne d'adsorption est d pendant du pH, de la dose d'adsorbant, de la concentration initiale, de la temp rature et du temps d'agitation. En outre, ce processus a t valu par des isothermes d'adsorption, savoir langmuir, Fruendlich, Temkin, Hasley, Jonovaic, etc. Les mod les cin tiques pseudo premier ordre, pseudo second ordre, Elovich, diffusion intra-particulaire sont galement valu s. Les conditions optimales pour l'absorption des ions cuivriques ont t trouv es pH=1.5, dose d'adsorbant =0.2 gm, concentration initiale= 10ppm, temps d'agitation =30 minutes . L'adsorption est mieux d crite par le mod le isotherme d'adsorption de Temkin et le mod le cin tique de pseudo second ordre. La capacit d'adsorption maximale a t valu e 2,48 mg/g.
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Adsorção de Cu2+ em Folhas de Phoenix Dactylifera L.

Adsorção de Cu2+ em Folhas de Phoenix Dactylifera L.

Hency Thacker; Vijay Ram

Edicoes Nosso Conhecimento
2023
pokkari
Este livro descreve a adsor o de i es c pricos nas folhas de Phoenix Dactylifera L. descrito. O fen meno de adsor o dependente do pH, dose adsorvente, concentra o inicial, temperatura e tempo de agita o. Al m disso, este processo foi avaliado por isotermas de adsor o, nomeadamente langmuir, Fruendlich, Temkin, Hasley, Jonovaic e assim por diante. Os modelos cin ticos pseudo primeira ordem, pseudo segunda ordem, Elovich, Intra-part culas de difus o s o tamb m avaliados. As condi es ptimas para a capta o de i es c pricos foram encontradas a pH=1,5, dose adsorvente =0,2 gm, concentra o inicial= 10ppm, tempo de agita o =30 minutos. A adsor o melhor descrita pelo modelo de isoterma de adsor o Temkin e modelo cin tico pseudo de segunda ordem. A capacidade m xima de adsor o foi avaliada como sendo de 2,48 mg/g.
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Extrakt aus Phoenix Dactylifera L.

Extrakt aus Phoenix Dactylifera L.

Hency Thacker; Vijay Ram

Verlag Unser Wissen
2023
pokkari
In der vorliegenden Studie wird der Extrakt aus Phoenix Dactylifera L. auf sein Potenzial zur Verhinderung der Korrosion von Aluminium in saurem 1N HCl-Medium durch Messung des Gewichtsverlusts untersucht. Der Acetonitril-Extrakt von Phoenix Dactylifera L. enth lt eine Vielzahl von Phytochemikalien wie Proteine, Aminos uren, Kohlenhydrate, Phenole, Flavanoide, Phlobatannine, Chinine, Harze, Steroide und Triterpenoide. Diese Phytochemikalien werden an der Oberfl che von Metallplatten durch die in ihnen vorhandenen Heteroatome adsorbiert. Das Adsorptionsverhalten dieser Phytochemikalien auf der Oberfl che von Al-Platten entspricht der Langmuir-Adsorptionsisotherme. Der Wert der freien Gibb'schen Adsorptionsenergie betr gt -7,37 KJ mol-1, was auf eine spontane Physisorption der Extraktmolek le auf der Oberfl che der Al-Platten hinweist.
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Extrait de Phoenix Dactylifera L.

Extrait de Phoenix Dactylifera L.

Hency Thacker; Vijay Ram

Editions Notre Savoir
2023
pokkari
Dans la pr sente tude, l'extrait de Phoenix Dactylifera L. est analys pour son potentiel de pr vention de la corrosion de l'aluminium en milieu acide HCl 1N par la mesure de la perte de poids. L'extrait ac tonitrile de Phoenix Dactylifera L. comprend une vari t de substances phytochimiques telles que des prot ines, des acides amin s, des hydrates de carbone, des ph nols, des flavano des, des phlobatannins, des quinines, des r sines, des st ro des et des triterp no des. Ces produits phytochimiques sont adsorb s sur la surface des plaques m talliques gr ce aux h t roatomes qu'ils contiennent. Le comportement d'adsorption de ces produits phytochimiques sur la surface des plaques d'Al est conforme l'isotherme d'adsorption de Langmuir. La valeur de l' nergie libre d'adsorption de Gibb est de -7,37 KJ mol-1, ce qui indique une physisorption spontan e des mol cules d'extrait sur la surface des plaques d'Al.
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Estratto di Phoenix Dactylifera L.

Estratto di Phoenix Dactylifera L.

Hency Thacker; Vijay Ram

Edizioni Sapienza
2023
pokkari
Nel presente studio, l'estratto di Phoenix Dactylifera L. stato analizzato per il suo potenziale di prevenzione della corrosione dell'alluminio in ambiente acido 1N HCl mediante misurazione della perdita di peso. L'estratto di acetonitrile di Phoenix Dactylifera L. comprende una variet di sostanze fitochimiche come proteine, aminoacidi, carboidrati, fenoli, flavanoidi, filobatannini, chinine, resine, steroidi e triterpenoidi. Queste sostanze fitochimiche vengono adsorbite sulla superficie delle piastre metalliche grazie all'atomo etero presente in esse. Il comportamento di adsorbimento di queste sostanze fitochimiche sulla superficie delle piastre di Al conforme all'isoterma di adsorbimento di Langmuir. Il valore dell'energia libera di Gibb per l'adsorbimento risultato pari a -7,37 KJ mol-1, indicando un fisioassorbimento spontaneo delle molecole di estratto sulla superficie delle piastre di Al.
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Extrato de Phoenix Dactylifera L.

Extrato de Phoenix Dactylifera L.

Hency Thacker; Vijay Ram

Edicoes Nosso Conhecimento
2023
pokkari
No presente estudo, o extrato de Phoenix Dactylifera L. analisado quanto ao seu potencial para prevenir a corros o do alum nio em meio cido 1N HCl atrav s da medi o da perda de peso. O extrato de acetonitrilo de Phoenix Dactylifera L. composto por uma variedade de fitoqu micos como prote nas, amino cidos, hidratos de carbono, fen is, flavon ides, flobataninos, quininas, resinas, ester ides e triterpen ides. Estes fitoqu micos s o adsorvidos na superf cie das placas met licas atrav s do hetero tomo presente nas mesmas. O comportamento de adsor o destes fitoqu micos na superf cie das placas de Al est de acordo com a isot rmica de adsor o de Langmuir. O valor da energia livre de Gibb da adsor o foi de -7,37 KJ mol-1, indicando uma fisissor o espont nea das mol culas do extrato na superf cie das placas de Al.
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Phytochemical Screening of Male & Female Phoenix Dactylifera L. Leaves

Phytochemical Screening of Male & Female Phoenix Dactylifera L. Leaves

Hency Thacker; Vijay Ram

SCHOLARS' PRESS
2024
pokkari
Phoenix Dactylifera L. commonly known as date palm is a dioeceous plant which means it has separate male and female saplings. In the present study, phytochemical screening and proximate value determination of male and female date palm species is carried out so as to understand seasonal and regional variation in them. The analysis of proximate values of male date palm, sweet female date palm and unsweet female date palm revealed that crude fiber and moisture content exhibited significant variation during three seasons: after flowering, during flowering and before flowering seasons. During flowering season, ash content of all three species remained uniform while the moisture content had considerable variation.
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Adsorption & Colligative Properties of Solutions

Adsorption & Colligative Properties of Solutions

Hency Thacker; Vijay Ram

SCHOLARS' PRESS
2024
pokkari
The present book covers glimpse on basic formulae and concepts of adsorption and colligative properties of the solution along with solved Numericals. This would provide them a quick revision for different concepts in colligative properties of the solution like depression in freezing point, elevation in boiling point, osmotic pressure, degree of association and dissociation, concentration of solution in the terms of normality, molarity, and molality and so on. Also different concepts of adsorption like chemisorption, physisorption, factors affecting adsorption, Langmuir adsorption isotherm, Fruendlich adsorption isotherm are also covered.
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