Kinetic Adsorption of Heavy Metal (Copper) On Rubber (Hevea Brasiliensis) Leaf Powder

Adsorption behavior of Pb(II) onto xanthated rubber (Hevea brasiliensis) leaf powder A plant waste, rubber (Hevea brasiliensis) leaf powder was modified with carbon disulfide (xanthation) for the purpose of introducing sulfur groups, and the adsorbent performance in removing Pb(II) ion was evaluated. Pb(II) adsorption was confirmed by spectroscopic analysis, which involved Fourier transform infrared (FTIR) spectroscopy, scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDX). The amount of Pb(II) adsorbed increased with increasing pH, contact time and concentration but slightly decreased with increasing ionic strength. Adsorption equilibrium was achieved in less than 60 min and followed the pseudo-second order model. The isotherm data indicated that Pb(II) adsorption on xanthated rubber leaf (XRL) fitted well with Langmuir isotherm model. The maximum adsorption capacity computed from the Langmuir isotherm model was 166.7 mg/g. Pb(II) adsorption occurred via ion-exchange and complexation mechanisms.

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Kinetics and Thermodynamic Study of Lead Adsorption from Aqueous Solution onto Rubber (Hevea brasiliensis) Leaf Powder

Journal of Applied Sciences ◽

10.3923/jas.2006.2762.2767 ◽

2006 ◽

Vol 6 (13) ◽

pp. 2762-2767 ◽

Cited By ~ 31

Author(s):

M.A.K.M. Hanafiah . ◽

W.S.W. Ngah . ◽

S.C. Ibrahim . ◽

H. Zakaria . ◽

W.A.H.W. Ilias .

Keyword(s):

Aqueous Solution ◽

Hevea Brasiliensis ◽

Thermodynamic Study ◽

Lead Adsorption ◽

Leaf Powder ◽

Kinetics And Thermodynamic

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Pharmacognostical, Phytochemical and Fluorescence analysis of the plant Bougainvillea spectabilis (Willd.)

Research Journal of Pharmacy and Technology ◽

10.52711/0974-360x.2021.00646 ◽

2021 ◽

pp. 3733-3738

Author(s):

Prabhat Kumar Das ◽

Jai Singh Vaghela ◽

Narendra Badore

Keyword(s):

Heavy Metal ◽

Ethyl Acetate ◽

Petroleum Ether ◽

Fluorescence Analysis ◽

Water Soluble ◽

Leaf Extracts ◽

Bioactive Natural Products ◽

Leaf Powder ◽

Bougainvillea Spectabilis ◽

Phytochemical Constituents

Objective: The aim of the study is to investigate the Phytochemical, Pharmacognostical, Fluorescence analysis and heavy metal testing of the plant Bougainvillea spectabilis (WILLD.). Methods: The plant powder was extracted with different solvents such as petroleum ether, chloroform, ethyl acetate, ethanol, and water. The different extracts were tested qualitatively for the identification of various phytochemical constituents. The plant powder was subjected to fluorescence analysis in daylight and in ultraviolet-light (254 nm and 365 nm) and heavy metal testing. Results: Water soluble extractive value was found to be higher than ethanol, Ethyl acetate, chloroform and petroleum ether. The total ash values were found to be higher followed by water soluble ash and acid insoluble ash. From the phytochemical screening result showed the presence of various phytochemical constituents such as alkaloid, glycoside, Carbohydrate, Flavonoids, Saponins, Terpenoids, Taninns and phytosterols. Fluorescence analysis of leaf powder of Bougainvillea spectabilis showed characteristic coloration with various chemicals. The presence of heavy metals like cobalt, mercury, nickel, silver and zinc were found negative. Conclusion: Thus the bioactive natural products in leaf extracts of Bougainvillea spectabilis can be used in the development of new pharmaceuticals that enhances therapeutic use.

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Environmentally friendly alternative for heavy metal adsorption based on doped diatoms with Au nanoparticles: A novel approach in green synthesis of adsorbents and kinetic adsorption study

Colloids and Interface Science Communications ◽

10.1016/j.colcom.2021.100559 ◽

2022 ◽

Vol 46 ◽

pp. 100559

Author(s):

Álvaro de Jesús Ruíz-Baltazar

Keyword(s):

Heavy Metal ◽

Green Synthesis ◽

Au Nanoparticles ◽

Environmentally Friendly ◽

Metal Adsorption ◽

Heavy Metal Adsorption ◽

Adsorption Study ◽

Kinetic Adsorption ◽

Novel Approach

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Kinetic and Thermodynamic Study of Cd2+ Adsorption onto Rubber Tree (hevea brasiliensis) Leaf Powder

Materials Science Forum ◽

10.4028/www.scientific.net/msf.517.217 ◽

2006 ◽

Vol 517 ◽

pp. 217-221 ◽

Cited By ~ 14

Author(s):

M.A.K.M. Hanafiah ◽

S. Shafiei ◽

Mohamad Kamal Harun ◽

M.Z.A. Yahya

Keyword(s):

Hevea Brasiliensis ◽

Rubber Tree ◽

Thermodynamic Study ◽

Leaf Powder ◽

Kinetic And Thermodynamic Study

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Batch, Column and Thermodynamic of Pb(II) Adsorption on Xanthated Rubber (Hevea brasiliensis) Leaf Powder

Journal of Applied Sciences ◽

10.3923/jas.2012.1142.1147 ◽

2012 ◽

Vol 12 (11) ◽

pp. 1142-1147 ◽

Cited By ~ 6

Author(s):

W.K.A.W.M. Khalir ◽

M.A.K.M. Hanafiah . ◽

S.Z.M. So`ad . ◽

W.S.W. Ngah . ◽

Z.A.A. Majid .

Keyword(s):

Hevea Brasiliensis ◽

Leaf Powder

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Complementary Z-Contrast Imaging and Digital Image Processing

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100118394 ◽

1985 ◽

Vol 43 ◽

pp. 304-305

Author(s):

K. N. Colonna ◽

G. Oliphant

Keyword(s):

Image Processing ◽

Heavy Metal ◽

Digital Image Processing ◽

Digital Image ◽

Biological Tissue ◽

Biological Imaging ◽

Tissue Preparation ◽

Contrast Imaging ◽

Imaging Tool ◽

Z Contrast

Harmonious use of Z-contrast imaging and digital image processing as an analytical imaging tool was developed and demonstrated in studying the elemental constitution of human and maturing rabbit spermatozoa. Due to its analog origin (Fig. 1), the Z-contrast image offers information unique to the science of biological imaging. Despite the information and distinct advantages it offers, the potential of Z-contrast imaging is extremely limited without the application of techniques of digital image processing. For the first time in biological imaging, this study demonstrates the tremendous potential involved in the complementary use of Z-contrast imaging and digital image processing.Imaging in the Z-contrast mode is powerful for three distinct reasons, the first of which involves tissue preparation. It affords biologists the opportunity to visualize biological tissue without the use of heavy metal fixatives and stains. For years biologists have used heavy metal components to compensate for the limited electron scattering properties of biological tissue.

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