THE INFLUENCE OF pH TOWARDS MULTIPLE METAL ION ADSORPTION OF Cu(II), Zn(II), Mn(II), AND Fe(II) ON HUMIC ACID

Multiple metal ions adsorption of Cu(II), Zn(II), Mn(II) and Fe(II) on humic acid with a batch method has been carried out at pH interaction of 3, 5, and 6. Concentration of metal ions in solution before and after interaction was analyzed with Atomic Absorption Spectrophotometer (AAS). Result showed that adsorption multiple metal ions of Cu(II), Zn(II), Mn(II), and Fe(II) on humic acid is optimum at pH 5. Adsorption energies of the multiple metal ions Cu(II), Zn(II), Mn(II), and Fe(II) on humic acid at pH 3, 5, and 6 are around 35.0 - 37.6 kJ/mole. In general, capacity of competition adsorption of the multiple metal ions has an order as follows; Cu(II) < Fe(II) < Zn(II) < Mn(II). Keywords: Humic acid, adsorption, multiple metal

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Functional group effect of isoreticular metal–organic frameworks on heavy metal ion adsorption

New Journal of Chemistry ◽

10.1039/c8nj01150h ◽

2018 ◽

Vol 42 (11) ◽

pp. 8864-8873 ◽

Cited By ~ 31

Author(s):

Leili Esrafili ◽

Vahid Safarifard ◽

Elham Tahmasebi ◽

M. D. Esrafili ◽

Ali Morsali

Keyword(s):

Heavy Metal ◽

Metal Ions ◽

Metal Ion ◽

Heavy Metal Ions ◽

Functional Group ◽

Metal Organic Frameworks ◽

Ion Adsorption ◽

Group Effect ◽

Metal Ion Adsorption ◽

Metal Organic

We examined adsorption behavior of some MOFs having different functional groups in their pillar structures for adsorption of some heavy metal ions.

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Nanofibrous Membrane of Silk Fibroin/Cellulose Acetate Blend for Heavy Metal Ion Adsorption

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.148-149.1431 ◽

2010 ◽

Vol 148-149 ◽

pp. 1431-1435 ◽

Cited By ~ 2

Author(s):

Wei Tao Zhou ◽

Jian Xin He ◽

Shi Zhong Cui ◽

Wei Dong Gao

Keyword(s):

Heavy Metal ◽

Metal Ions ◽

Cellulose Acetate ◽

Silk Fibroin ◽

Metal Ion ◽

Nanofibrous Membrane ◽

Heavy Metal Ion ◽

Ion Adsorption ◽

Metal Ion Adsorption ◽

Nanofibrous Membranes

Silk fibroin/cellulose acetate blend Nanofibrous membranes were prepared by electro- spinning and their performances were evaluated as a heavy metal ion adsorbent. The electrospun nanofibrous membranes were comprised of randomly oriented ultra-fine fibers of 100-600nm diameters. As a result of field emission electron microscope (FEEM), compared with pure nanofibrous membranes, the anti-felting shrinkage of SF/CA blend nanofibrous membranes with 20% CA content was markedly improved after treatment with 100% ethanol. Metal ion adsorption test was performed with Cu2+ as a model heavy metal ion in a stock solution. The pure SF nanofibrous membranes exhibited high metal ion capacities compared with that pure CA nanofibrous membrane. Especially, the SF/CA blend nanofibrous membranes had an exceptional performance for the adsorption of metal ions, and the maximum milligrams per gram of metal ions adsorbed reached 22.8mg/g for Cu2+. This indicated that SF and CA had synergetic effect.

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Olive Stone Delignification Toward Efficient Adsorption of Metal Ions

Frontiers in Materials ◽

10.3389/fmats.2021.605931 ◽

2021 ◽

Vol 8 ◽

Author(s):

Ying Gao ◽

Maria del Carmen Aliques Tomas ◽

Jonas Garemark ◽

Xia Sheng ◽

Lars Berglund ◽

...

Keyword(s):

Metal Ions ◽

Metal Ion ◽

Waste Product ◽

Chemical Properties ◽

Sodium Chlorite ◽

Ion Adsorption ◽

Metal Ion Adsorption ◽

Optical Functions ◽

Physical Chemical ◽

Olive Stone

Olive stone is an important biomaterial waste product generated in large amount. As a lignocellulose material, olive stone could be a sustainable resource for biosorbents. In this work, olive stone powder delignification using sodium chlorite (NaClO2) was performed to enhance metal ion adsorption capacity. The influence of the treatment on olive stone powder physical-chemical properties was studied, including specific surface area, surface chemistry, morphology, etc. The white, delignified olive stone powder was applied for metal ions (Fe3+, Cu2+, and Zn2+) adsorption. Olive stone delignification not only increases the accessibility of the olive stone powder but also broadens the applications to materials design with optical functions by the generation of a white powder.

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Synthesis, characterization, and highly acid-resistant properties of crosslinking β-chitosan with polyamines for heavy metal ion adsorption

RSC Advances ◽

10.1039/c6ra21993d ◽

2016 ◽

Vol 6 (106) ◽

pp. 104754-104762 ◽

Cited By ~ 14

Author(s):

Ming-Tsung Wu ◽

Yen-Ling Tsai ◽

Chih-Wei Chiu ◽

Chih-Chia Cheng

Keyword(s):

Heavy Metal ◽

Metal Ions ◽

Metal Ion ◽

Heavy Metal Ions ◽

Heavy Metal Ion ◽

Ion Adsorption ◽

Adsorption Characteristics ◽

Metal Ion Adsorption ◽

Acidic Environments

A novel crosslinking modification of β-chitosan and successfully analyzed its fast adsorption characteristics for different heavy metal ions in highly acidic environments.

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Effect of exopolysaccharides on the adsorption of metal ions by Pseudomonas sp. CU-1

Water Science & Technology ◽

10.2166/wst.2005.0182 ◽

2005 ◽

Vol 52 (7) ◽

pp. 63-68 ◽

Cited By ~ 25

Author(s):

T.C. Lau ◽

X.A. Wu ◽

H. Chua ◽

P.Y. Qian ◽

P.K. Wong

Keyword(s):

Metal Ions ◽

Metal Ion ◽

Broth Culture ◽

Ion Adsorption ◽

Bacterial Cells ◽

Pseudomonas Sp ◽

Adsorption Ability ◽

Metal Ion Adsorption ◽

Surrounding Environment

Pseudomonas sp. CU-1, which was isolated from an interfacial biofilm of a sludge sample collected from an electroplating company, had a relatively high ability to adsorb Cu2 + in solution. The bacterium grown in broth culture produced a large amount of capsular exopolymers mainly consisting of polysaccharides. The exopolysaccharides (EPS) were partially purified. The adsorption isotherm experiments showed that cells and EPS of Pseudomonas sp. CU-1 had similar Q0 and b for the dye, Janus Green, and Cu2+. The adsorption of Cu2 + by cells could be monitored by the amount of dye displaced, due to the binding of metal ions onto the cell surface. The order of adsorption ability of metal ions and dye displacement by metal ion of the bacterium was: Cu2 + > Cd2 + > Zn2 + > Ni2 + . The results of the dye displacement by metal ions binding onto the surfaces of cells, EPS-removed cells, and EPS suggest that EPS produced by Pseudomonas sp. CU-1 plays an important role in preventing metal ions in the surrounding environment from contact with the bacterial cells. The possible role of the metal ion adsorption by the EPS of this biofilm bacterium was discussed.

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Pengaruh Jumlah Mol Kroslinker Pada Selektifitas IIP Berbasis Polieugenol Terhadap Fe(III)

ALCHEMY Jurnal Penelitian Kimia ◽

10.20961/alchemy.14.2.12426.291-302 ◽

2018 ◽

Vol 14 (2) ◽

pp. 290

Author(s):

Muhammad Cholid Djunaidi ◽

Abdul Haris ◽

Pardoyo Pardoyo ◽

Rosdiana K

Keyword(s):

Polyethylene Glycol ◽

Metal Ions ◽

Polymer Matrix ◽

Metal Ion ◽

Adsorption Process ◽

Ion Adsorption ◽

Imprinted Polymer ◽

Adsorption Selectivity ◽

Metal Ion Adsorption

Sintesis Ionic Imprinted Polymer (IIP) dilakukan dengan variasi penambahan crosslinker PEGDE (Polyethylene glycol diglycidilether) yang kemudian diuji selektivitas IIP terhadap ion logam Fe melalui proses adsorpsi. IIP merupakan metode mencetak ion logam yang terikat dalam polimer, selanjutnya dilepaskan dari matriks polimer menghasilkan cetakan yang sesuai terhadap ion target. Tujuan penelitian ini untuk menghasilkan IIP dan NIP dari polieugenol dengan variasi penambahan crosslinker PEGDE perbandingan sebanyak 1, 2 dan 3 mol, mengetahui pengaruh jumlah mol crosslinker terhadap selektivitas adsorpsi IIP yang melibatkan rongga imprint/cetakan, serta mengetahui pengaruh logam kompetitor terhadap selektivitas adsorpsi IIP terhadap logam Fe. Selektivitas adsorpsi ion logam Fe(III) dengan penambahan crosslinker PEDGE 3 mol lebih besar dibandingkan dengan penambahan crosslinker PEGDE 1 dan 2 mol. Selektivitas adsorpsi Fe lebih besar pada Fe-Cr dibandingkan dengan Fe-Cd dan Fe-Pb.Influence of Crosslinker Mole Amount on the Selectivity IIP-Based Polyeugenol Towards Fe(III). The synthesis of IIP (Ionic Imprinted Polymer) was carried out using PEGDE (Polyethylene glycol diglycidilether) crosslinker addition in various moles which was then tested for IIP selectivity for Fe metal ions through the adsorption process. IIP is a method of metal ions printing which are bound in a polymer, then released from the polymer matrix to produce a suitable mold for the target ion. The purposes of this study were to produce IIP and non imprinted polymer (NIP) from polyeugenol with the addition of various moles of PEGDE crosslinkers as much as 1, 2 and 3 moles, and to determine the effect of the number of mole crosslinkers on the selectivity of IIP adsorption involving imprint/mold cavities, and the effect of competitor metals on IIP adsorption selectivity towards Fe metal. The selectivity of Fe (III) metal ion adsorption with the addition of 3 mole PEDGE crosslinkers was greater than the addition of 1 and 2 moles PEGDE crosslinkers. The selectivity of Fe adsorption is was greater in Fe-Cr compared to Fe-Cd and Fe-Pb.

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