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You searched for: Subject "alginates" Remove constraint Subject: "alginates" Journal International journal of biological macromolecules Remove constraint Journal: International journal of biological macromolecules Subject adsorption Remove constraint Subject: adsorption Subject aqueous solutions Remove constraint Subject: aqueous solutions
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1. Fast removal of malachite green dye using novel superparamagnetic sodium alginate-coated Fe3O4 nanoparticles

Author:
Mohammadi, Abbas; Daemi, Hamed; Barikani, Mehdi
Source:
International journal of biological macromolecules 2014 v.69 pp. 447-455
ISSN:
0141-8130
Subject:
sodium alginate,   etc   ; Fourier transform infrared spectroscopy; X-ray diffraction; adsorbents; adsorption; aqueous solutions; coprecipitation; equations; ferric chloride; ferrous chloride; kinetics; magnetite; malachite green; nanoparticles; pH; sodium; sorption isotherms; temperature; transmission electron microscopy;     Show all 19 Subjects
Abstract:
... In this study, superparamagnetic sodium alginate-coated Fe3O4 nanoparticles (Alg–Fe3O4) as a novel magnetic adsorbent were prepared by in situ coprecipitation method, in which Fe3O4 nanoparticles were precipitated from FeCl3 and FeCl2 under alkaline medium in the presence of sodium alginate. The Alg–Fe3O4 nanoparticles were used for removal of malachite green (MG) from aqueous solutions using batc ...
DOI:
10.1016/j.ijbiomac.2014.05.042

2. Removal of copper(II) from aqueous solution using nanochitosan/sodium alginate/microcrystalline cellulose beads

Author:
Vijayalakshmi, K.; Gomathi, Thandapani; Latha, Srinivasan; Hajeeth, T.; Sudha, P.N.
Source:
International journal of biological macromolecules 2016 v.82 pp. 440-452
ISSN:
0141-8130
Subject:
sodium alginate,   etc   ; Fourier transform infrared spectroscopy; X-ray diffraction; adsorbents; adsorption; aqueous solutions; cellulose; copper; heavy metals; models; pH; sorption isotherms;     Show all 12 Subjects
Abstract:
... The present study was aimed to prepare the novel ternary biopolymeric beads of nanochitosan (NCS)/sodium alginate (SA)/microcrystalline cellulose (MC) for the removal of heavy metal copper from aqueous solution through batch adsorption mode. The polymeric beads were characterized before and after adsorption using FTIR, XRD and EDX-SEM studies. The efficiency of the adsorbent was analyzed by varyin ...
DOI:
10.1016/j.ijbiomac.2015.09.070

3. Synthesis and antimicrobial activity of polysaccharide alginate derived cationic surfactant–metal(II) complexes

Author:
Tawfik, Salah M.; Hefni, Hassan H.
Source:
International journal of biological macromolecules 2016 v.82 pp. 562-572
ISSN:
0141-8130
Subject:
sodium alginate,   etc   ; Bacillus subtilis; Candida albicans; Escherichia coli; Fourier transform infrared spectroscopy; Gram-negative bacteria; Gram-positive bacteria; Pseudomonas aeruginosa; Staphylococcus aureus; adsorption; anti-infective properties; aqueous solutions; chemical structure; cobalt; copper; fungi; micelles; nuclear magnetic resonance spectroscopy; screening; surface tension; surfactants; temperature; thermodynamics; zinc;     Show all 24 Subjects
Abstract:
... New natural polysaccharide carbohydrate derivatives of sodium alginate surfactant and its cobalt, copper and zinc complexes were synthesized. Structures of the synthesized compounds are reported using FTIR, 1H NMR and UV–vis. The critical micelle concentration (CMC) value of the alginate surfactant and its metal complexes in aqueous solution was found out from surface tension measurements. Surface ...
DOI:
10.1016/j.ijbiomac.2015.09.043

4. Pb(II) adsorption by a novel activated carbon ⿿ alginate composite material. A kinetic and equilibrium study

Author:
Cataldo, Salvatore; Gianguzza, Antonio; Milea, Demetrio; Muratore, Nicola; Pettignano, Alberto
Source:
International journal of biological macromolecules 2016 v.92 pp. 769-778
ISSN:
0141-8130
Subject:
calcium alginate,   etc   ; activated carbon; adsorbents; adsorption; aqueous solutions; composite materials; ionic strength; lead; models; sodium chloride; thermogravimetry;     Show all 11 Subjects
Abstract:
... The adsorption capacity of an activated carbon ⿿ calcium alginate composite material (ACAA-Ca) has been tested with the aim of developing a new and more efficient adsorbent material to remove Pb(II) ion from aqueous solution. The study was carried out at pH=5, in NaCl medium and in the ionic strength range 0.1⿿0.75molL⿿1. Differential Pulse Anodic Stripping Voltammetry (DP-ASV) technique was used ...
DOI:
10.1016/j.ijbiomac.2016.07.099

5. Batch adsorption and desorption studies on the removal of lead (II) from aqueous solution using nanochitosan/sodium alginate/microcrystalline cellulose beads

Author:
Vijayalakshmi, K.; Devi, B. Mahalakshmi; Latha, Srinivasan; Gomathi, Thandapani; Sudha, P.N.; Venkatesan, Jayachandran; Anil, Sukumaran
Source:
International journal of biological macromolecules 2017
ISSN:
0141-8130
Subject:
sodium alginate,   etc   ; Fourier transform infrared spectroscopy; adsorbents; adsorption; aqueous solutions; biosorbents; cellulose; desorption; hydrochloric acid; industrial effluents; ions; lead; models; pH; sorption isotherms; temperature;     Show all 16 Subjects
Abstract:
... The feasibility of adsorption and desorption behavior of nanochitosan(NCS)/sodium alginate(SA)/microcrystalline cellulose (MC) bead prepared in 2:8:1 ratio for Pb(II) removal has been investigated through batch studies. The proof of adsorption of Pb(II) ions onto NCS/SA/MC beads was identified from FT-IR and EDX-SEM Studies. Studies of the effect of pH, adsorbent dose, metal ion concentration and ...
DOI:
10.1016/j.ijbiomac.2017.04.120

6. Preparation of composite aerogels based on sodium alginate, and its application in removal of Pb2+and Cu2+from water

Author:
Huang, Yaoge; Wang, Zhuqing
Source:
International journal of biological macromolecules 2017
ISSN:
0141-8130
Subject:
calcium alginate; sodium alginate,   etc   ; Fourier transform infrared spectroscopy; X-ray photoelectron spectroscopy; acid treatment; adsorbents; adsorption; aqueous solutions; calcium; chelation; copper; freeze drying; heavy metals; lead; metal ions; pH; scanning electron microscopy; water pollution;     Show all 18 Subjects
Abstract:
... A novel Ethylenediamine-Modified Calcium Alginate Aerogel (ECAA) was synthesized by freeze-drying method, and used to remove Pb2+ and Cu2+ from aqueous solutions. The prepared adsorbent was characterized by using the FTIR spectra, SEM analysis and XPS analysis. The effects of the pH, initial metal ion concentration, adsorption kinetics, and isotherms had been studied systematically. Moreover, the ...
DOI:
10.1016/j.ijbiomac.2017.09.057

7. Fabrication and characterization of chitosan-crosslinked-poly(alginic acid) nanohydrogel for adsorptive removal of Cr(VI) metal ion from aqueous medium

Author:
Sharma, Gaurav; Naushad, Mu.; Al-Muhtaseb, Ala’a H.; Kumar, Amit; Khan, Mohammad Rizwan; Kalia, Susheel; Shweta,; Bala, Manju; Sharma, Arush
Source:
International journal of biological macromolecules 2017 v.95 pp. 484-493
ISSN:
0141-8130
Subject:
alginates,   etc   ; Fourier transform infrared spectroscopy; adsorbents; adsorption; agitation; aqueous solutions; chromium; equations; image analysis; scanning electron microscopy; temperature; thermodynamics; transmission electron microscopy;     Show all 13 Subjects
Abstract:
... In this study, chitosan-crosslinked-poly (alginic acid) nanohydrogel (CN-cl-PL(AA)NHG) was synthesized by co-polymerization method. It was used an effective adsorbent for the exclusion of Cr(VI) metal ion from aqueous medium. The synthesized nanohydrogel was characterized by FTIR, SEM and TEM. The TEM images clearly indicated the appearance of smooth surface with average size of particles ranging ...
DOI:
10.1016/j.ijbiomac.2016.11.072

8. Formation and cleaning function of physically cross-linked dual strengthened water-soluble chitosan-based core-shell particles

Author:
Dong, Yanrui; Xiao, Congming
Source:
International journal of biological macromolecules 2017 v.102 pp. 130-135
ISSN:
0141-8130
Subject:
sodium alginate,   etc   ; Fourier transform infrared spectroscopy; adsorption; aqueous solutions; carbon dioxide; chitosan; cleaning; copper; crosslinking; ethanol; freezing; heavy metals; hydrogels; ions; lead; particulates; polyvinyl alcohol; sorbents; storage modulus; thawing; thermal stability; thermogravimetry; toxic substances;     Show all 23 Subjects
Abstract:
... Facile and mild ionic cross-linking and freezing/thawing technologies were applied to prepare double strengthened core-shell particles by using water-soluble chitosan (WSC), sodium alginate (SA) and poly(vinyl alcohol) (PVA) as starting materials. The aqueous solution contained WSC and PVA was dropped in ethanol to form beads. The beads were converted into WSC/PVA hydrogel particles by being subje ...
DOI:
10.1016/j.ijbiomac.2017.03.185

9. Fabrication of carboxylated cellulose nanocrystal/sodium alginate hydrogel beads for adsorption of Pb(II) from aqueous solution

Author:
Hu, Zhao-Hong; Omer, Ahmed Mohamed; Ouyang, Xiao–kun; Yu, Di
Source:
International journal of biological macromolecules 2018 v.108 pp. 149-157
ISSN:
0141-8130
Subject:
sodium alginate,   etc   ; Fourier transform infrared spectroscopy; X-ray photoelectron spectroscopy; acid treatment; adsorbents; adsorption; aqueous solutions; carboxylation; cellulose; crosslinking; endothermy; hydrogels; kinetics; lead; nanocrystals; scanning electron microscopy; sorption isotherms; thermodynamics; thermogravimetry; transmission electron microscopy; wastewater treatment; zeta potential;     Show all 22 Subjects
Abstract:
... Carboxylated cellulose nanocrystal-sodium alginate (CCN-Alg) hydrogel beads were easily prepared through a cross-linking method. The structure and properties of the composite beads were characterized by TEM, FTIR, SEM, XPS, thermogravimetric analysis (TGA), and zeta potential measurement. A high ratio of 76% of the Pb(II) ion was adsorbed within the first 2h, and the adsorption equilibrium was nea ...
DOI:
10.1016/j.ijbiomac.2017.11.171

10. Methylene Blue removal from aqueous solution by a biocomposite synthesized from sodium alginate and wastes of oil extraction from almond peanut

Author:
Erfani, Masoud; Javanbakht, Vahid
Source:
International journal of biological macromolecules 2018 v.114 pp. 244-255
ISSN:
0141-8130
Subject:
sodium alginate,   etc   ; X-ray diffraction; adsorbents; adsorption; almonds; aqueous solutions; biocomposites; data analysis; energy-dispersive X-ray analysis; entropy; equations; heat production; infrared spectroscopy; kinetics; methylene blue; models; oils; pH; peanuts; scanning electron microscopy; sorption isotherms; wastewater;     Show all 22 Subjects
Abstract:
... In this study, the removal of Methylene Blue dye was investigated by biocomposite beads synthesized from sodium alginate and wastes of oil extraction from almond peanut. Prepared biocomposite was characterized using X-ray diffraction, Infrared spectroscopy, scanning electron microscopy, Energy Dispersive X-Ray analysis. The adsorption capacities of Methylene Blue were investigated with respect to ...
DOI:
10.1016/j.ijbiomac.2018.03.003

11. Porous synthetic hectorite clay-alginate composite beads for effective adsorption of methylene blue dye from aqueous solution

Author:
Pawar, Radheshyam R.; Lalhmunsiama,; Gupta, Prabuddha; Sawant, Sandesh Y.; Shahmoradi, B.; Lee, Seung-Mok
Source:
International journal of biological macromolecules 2018 v.114 pp. 1315-1324
ISSN:
0141-8130
Subject:
sodium alginate,   etc   ; adsorbents; adsorption; alizarin; aqueous solutions; calcium; clay; cross-linking reagents; hydrogels; methyl orange; methylene blue; models; porous media; sorption isotherms; surface area; texture; thermal stability; thermogravimetry;     Show all 18 Subjects
Abstract:
... The present study deals with the preparation and characterization of mesoporous synthetic hectorite (MSH) clay which further encapsulated with Na-alginate for the preparation of mesoporous synthetic hectorite-alginate beads (MSH-AB) where Ca2+ act as a cross-linking agent. The detail characterization of MSH and MSH-AB were carried out by various physicochemical techniques. The thermogravimetric an ...
DOI:
10.1016/j.ijbiomac.2018.04.008

12. Preparation and characterization of new low cost adsorbent beads based on activated bentonite encapsulated with calcium alginate for removal of 2,4-dichlorophenol from aqueous medium

Author:
Garmia, Derafa; Zaghouane-Boudiaf, H.; Ibbora, César Viseras
Source:
International journal of biological macromolecules 2018 v.115 pp. 257-265
ISSN:
0141-8130
Subject:
calcium alginate,   etc   ; 2,4-dichlorophenol; Fourier transform infrared spectroscopy; X-ray diffraction; adsorbents; adsorption; aqueous solutions; bentonite; cationic surfactants; endothermy; models; pH; quaternary ammonium compounds; sorption isotherms; temperature;     Show all 15 Subjects
Abstract:
... This study explored the potential of composites organo-bentonite/alginate beads as adsorbents for the removal of 2,4-dichlorophenol (2,4DCP) from aqueous solution. Bentonite was firstly modified with cationic surfactants octadecyltrimethylammonium, hexadecyl trimethylammonium and phenyltrimethylammonium, then encapsulated with calcium alginate to form adsorbent composite beads. X-ray diffraction w ...
DOI:
10.1016/j.ijbiomac.2018.04.064

13. Synthesis of zeolite/nickel ferrite/sodium alginate bionanocomposite via a co-precipitation technique for efficient removal of water-soluble methylene blue dye

Author:
Bayat, Mahsa; Javanbakht, Vahid; Esmaili, Javad
Source:
International journal of biological macromolecules 2018 v.116 pp. 607-619
ISSN:
0141-8130
Subject:
sodium alginate,   etc   ; Fourier transform infrared spectroscopy; X-ray diffraction; adsorbents; adsorption; aqueous solutions; computer software; coprecipitation; experimental design; ferrimagnetic materials; kinetics; magnetism; methylene blue; models; nanocomposites; nickel; oxidation; pH; response surface methodology; scanning electron microscopy; sorption isotherms; temperature; thermodynamics; water solubility; zeolites;     Show all 25 Subjects
Abstract:
... In this study, we sought to synthesize magnetic nanocomposite of zeolite/nickel ferrite through co-precipitation method and modify its surface by sodium alginate to enhance its methylene blue adsorption capacity and to prevent its oxidation. Nanocomposite characteristics were investigated by SEM, VSM, XRD and FTIR analyses. The results indicate that nanocomposite synthesis and modification has bee ...
DOI:
10.1016/j.ijbiomac.2018.05.012

14. Fabrication of magnetic carboxyl-functionalized attapulgite/calcium alginate beads for lead ion removal from aqueous solutions

Author:
Zou, Ming feng; Chen, Xiang ying; Lin, Xia jie; Chen, Meng ying; Ding, Nan Nan; Yang, Li-Ye; Ouyang, Xiao-kun
Source:
International journal of biological macromolecules 2018 v.120 pp. 789-800
ISSN:
0141-8130
Subject:
calcium alginate; sodium alginate,   etc   ; adsorbents; adsorption; agitation; ambient temperature; aqueous solutions; lead; magnetism; models; pH; sorption isotherms; water pollution;     Show all 13 Subjects
Abstract:
... In the present study, we synthesized an effective Pb(II) adsorbent from magnetic carboxyl-functionalized attapulgite (McAPT) and sodium alginate (Alg) by simple mechanical agitation at room temperature. The novel McAPT@Alg composite was systematically characterized using a number of instrumental techniques, and the effects of adsorbent dosage, initial concentration of Pb(II), adsorption time, pH, ...
DOI:
10.1016/j.ijbiomac.2018.08.144

15. Sericin-derived activated carbon-loaded alginate bead: An effective and recyclable natural polymer-based adsorbent for methylene blue removal

Author:
Kwak, Hyo Won; Hong, Yeonkyung; Lee, Min Eui; Jin, Hyoung-Joon
Source:
International journal of biological macromolecules 2018 v.120 pp. 906-914
ISSN:
0141-8130
Subject:
alginates,   etc   ; activated carbon; adsorbents; adsorption; agroindustrial byproducts; aqueous solutions; industry; methylene blue; polymers; sericin; sericulture; silk; sodium hydroxide; surface area;     Show all 14 Subjects
Abstract:
... Activated carbon has been widely used as an effective adsorbent for removing contaminants from the water stream. Preparation of activated carbon using agricultural by-products is environmentally friendly and can greatly contribute to the virtuous cycle of natural polymers. In this study, highly porous activated carbon was prepared using silk sericin, a secondary protein of the sericulture industry ...
DOI:
10.1016/j.ijbiomac.2018.08.116

16. Fabrication of tetraethylenepentamine functionalized alginate beads for adsorptive removal of Cr (VI) from aqueous solutions

Author:
Omer, A.M.; Khalifa, R.E.; Hu, Zhaohong; Zhang, Hong; Liu, Chao; Ouyang, Xiao-kun
Source:
International journal of biological macromolecules 2019 v.125 pp. 1221-1231
ISSN:
0141-8130
Subject:
alginates,   etc   ; Fourier transform infrared spectroscopy; X-ray photoelectron spectroscopy; adsorbents; adsorption; aqueous solutions; benzoquinones; chromium; ion exchange capacity; ions; models; scanning electron microscopy; sorption isotherms; thermogravimetry;     Show all 14 Subjects
Abstract:
... In this study, an innovative adsorbent based on tetraethylenepentamine (TEPA) functionalized alginate (Alg) beads (TEPA-Alg) was developed for the adsorptive removal of Cr (VI) from aqueous solutions. Chemical modification of alginate surface was carried out using p-benzoquinone (PBQ) as a coupling agent followed by functionalization with TEPA. The prepared functionalized beads were characterized ...
DOI:
10.1016/j.ijbiomac.2018.09.097

17. Highly efficient adsorption of Pb(II) from aqueous solution using amino-functionalized SBA-15/calcium alginate microspheres as adsorbent

Author:
Song, Yongcun; Yang, Li-Ye; Wang, Yang-guang; Yu, Di; Shen, Jiafeng; Ouyang, Xiao-kun
Source:
International journal of biological macromolecules 2019 v.125 pp. 808-819
ISSN:
0141-8130
Subject:
alginates,   etc   ; Fourier transform infrared spectroscopy; X-ray diffraction; X-ray photoelectron spectroscopy; adsorbents; adsorption; aqueous solutions; lead; microparticles; models; pH; scanning electron microscopy; sorption isotherms; temperature; thermogravimetry;     Show all 15 Subjects
Abstract:
... In this work, amino-functionalized Santa Barbara Amorphous-15/calcium alginate (ASBA-15@CA) microspheres were fabricated and characterized by FTIR, SEM, XRD, TGA, and XPS analyses. The Pb(II) adsorption properties of the ASBA-15@CA microspheres were studied in terms of the effects of the adsorption time, adsorbent dose, solution pH, temperature, and initial concentration of Pb(II) on the adsorptio ...
DOI:
10.1016/j.ijbiomac.2018.12.112

18. Magnetic silica coated iron carbide/alginate beads: Synthesis and application for adsorption of Cu (II) from aqueous solutions

Author:
Ahmadpoor, Fatemeh; Shojaosadati, Seyed Abbas; Mousavi, Seyedeh Zahra
Source:
International journal of biological macromolecules 2019 v.128 pp. 941-947
ISSN:
0141-8130
Subject:
sodium alginate,   etc   ; adsorbents; adsorption; aqueous solutions; copper; energy-dispersive X-ray analysis; ions; kinetics; magnetism; models; nanoparticles; pH; scanning electron microscopy; silica; transmission electron microscopy;     Show all 15 Subjects
Abstract:
... In the present study, a novel and high efficient magnetic alginate beads containing Fe5C2@SiO2 nanoparticles (NPs) were synthesized and applied to remove Cu (II) ions from water. The synthesized Fe5C2@SiO2 NPs were characterized by scanning electron microscopy (SEM) and Transmission electron microscopy (TEM). The elemental content of the magnetic/alginate beads before and after Cu(II) adsorption w ...
DOI:
10.1016/j.ijbiomac.2019.01.173

19. Synthesis and characterization of metal loaded chitosan-alginate biopolymeric hybrid beads for the efficient removal of phosphate and nitrate ions from aqueous solution

Author:
Karthikeyan, Perumal; Banu, Hyder Ali Thagira; Meenakshi, Sankaran
Source:
International journal of biological macromolecules 2019 v.130 pp. 407-418
ISSN:
0141-8130
Subject:
alginates,   etc   ; Fourier transform infrared spectroscopy; X-ray diffraction; adsorbents; adsorption; anions; aqueous solutions; chitosan; electrostatic interactions; endothermy; energy-dispersive X-ray analysis; ion exchange; iron; models; nitrates; pH; phosphates; scanning electron microscopy; temperature; thermodynamics; thermogravimetry; water pollution;     Show all 22 Subjects
Abstract:
... The aim of this present scenario is to examine the removal performance and mechanism of phosphate and nitrate removal onto metal (Fe3+) loaded chitosan and alginate biopolymeric hybrid beads (Fe-CS-Alg) from aqueous solution. The batch adsorption experiments were accomplished via various operating parameters like pH, dosage, contact time, co-existing anions, and temperature. The equilibrium isothe ...
DOI:
10.1016/j.ijbiomac.2019.02.059

20. Dye removal from aqueous solution by a novel dual cross-linked biocomposite obtained from mucilage of Plantago Psyllium and eggshell membrane

Author:
Mirzaei, Shohreh; Javanbakht, Vahid
Source:
International journal of biological macromolecules 2019 v.134 pp. 1187-1204
ISSN:
0141-8130
Subject:
alginates,   etc   ; Fourier transform infrared spectroscopy; Plantago arenaria; X-ray diffraction; adsorbents; adsorption; aqueous solutions; biocomposites; crosslinking; dynamic models; egg shell; energy-dispersive X-ray analysis; heat production; kinetics; methyl orange; methylene blue; mucilages; pH; sorption isotherms; thermogravimetry;     Show all 20 Subjects
Abstract:
... In this study, a novel dual cross-linked biocomposite of Plantago Psyllium mucilage, eggshell membrane, and alginate was prepared and used for removal of cationic methylene blue and anionic methyl orange dyes from aqueous solution. The fabricated biocomposite was characterized by FeSEM, EDX, XRD, TGA, BET, and FTIR analyses. Parameters such as kinetics, isotherm, thermodynamics, regeneration, swel ...
DOI:
10.1016/j.ijbiomac.2019.05.119