Facile preparation of iron oxyhydroxide–biopolymer (Chitosan /Alginate) beads and their comparative insights into arsenic removal

2021 ◽  
pp. 118983
Author(s):  
Shweta Rawat ◽  
Abhijit Maiti
Keyword(s):  
Arsenic Removal ◽  
Alginate Beads ◽  
Iron Oxyhydroxide ◽  
Facile Preparation

scholarly journals Alginate-based biotechnology: a review on the arsenic removal technologies and future possibilities

2019 ◽  
Vol 68 (6) ◽  
pp. 369-389 ◽  
Author(s):  
Shakhawat Chowdhury ◽  
Imran Rahman Chowdhury ◽  
Fayzul Kabir ◽  
Mohammad Abu Jafar Mazumder ◽  
Md. Hasan Zahir ◽  
...  
Keyword(s):  
Drinking Water ◽  
Arsenic Removal ◽  
Alginate Bead ◽  
Alginate Beads ◽  
Industrial Applications ◽  
Mass Scale ◽  
Future Research ◽  
Large Area ◽  
Arsenic Adsorption ◽  
Wide Range

Abstract The alginate-based adsorption technologies have emerged as potential methods for arsenic removal from drinking water. The adsorbents (iron oxide, hydroxide, nano zero valent iron (nZVI), industrial waste, minerals, magnetite, goethite, zirconium oxide, etc.) are impregnated into alginate beads to produce the media. The biocompatibility, rough surface with large area, and amorphous and high water permeable bead structure improve arsenic adsorption efficiency while the regeneration process is simpler than the conventional adsorbents. In recent years, studies have reported laboratory-scale applications of alginate beads, encapsulated and impregnated with adsorbents, for arsenic removal from drinking water. The arsenic removal efficiencies were reported to be over 95% with a wide range of concentrations (10–1,000 parts per billion) and pH (3.0–7.5). However, commercial- and/or mass-scale applications have not been reported yet, due possibly to overall cost, complexity, reusability, and arsenic waste-laden sludge management. In this paper, research achievement on arsenic removal using alginate-based adsorbents has been reviewed. The review was performed in context to alginate bead development, adsorbent encapsulation and impregnation, application, performance, and regeneration. The advantages and limitations of the methods were analyzed and the scopes of future research were identified for mass scale domestic and industrial applications.

Arsenic Removal Using Iron Oxide Loaded Alginate Beads

2002 ◽  
Vol 41 (24) ◽  
pp. 6149-6155 ◽  
Author(s):  
Anastasios I. Zouboulis ◽  
Ioannis A. Katsoyiannis
Keyword(s):  
Iron Oxide ◽  
Arsenic Removal ◽  
Alginate Beads

scholarly journals A critical review on arsenic removal from water using iron-based adsorbents

RSC Advances ◽  
2018 ◽  
Vol 8 (69) ◽  
pp. 39545-39560 ◽  
Author(s):  
Linlin Hao ◽  
Mengzhu Liu ◽  
Nannan Wang ◽  
Guiju Li
Keyword(s):  
Composite Materials ◽  
Critical Review ◽  
Arsenic Removal ◽  
Zero Valent Iron ◽  
Iron Oxyhydroxide ◽  
Iron Oxyhydroxides ◽  
Recent Developments ◽  
Iron Based ◽  
Bimetallic Oxides

The recent developments on iron-based adsorbents such as iron oxyhydroxides nanoparticles, zero-valent iron, bimetallic oxides, and iron oxyhydroxide-doped composite materials are fully discussed in this review.

scholarly journals Calcium Alginate Beads with Entrapped Iron Oxide Magnetic Nanoparticles Functionalized with Methionine—A Versatile Adsorbent for Arsenic Removal

Nanomaterials ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 1345
Author(s):  
Surbhi Lilhare ◽  
Sunitha B. Mathew ◽  
Ajaya K. Singh ◽  
Sónia A. C. Carabineiro
Keyword(s):  
Magnetic Nanoparticles ◽  
Calcium Alginate ◽  
Arsenic Removal ◽  
Low Cost ◽  
Cost Effective ◽  
Entropy Change ◽  
Alginate Beads ◽  
Electron Microscopic ◽  
Removal Capacity ◽  
Transmission Electron

A novel beads adsorbent, consisting of calcium alginate entrapped on magnetic nanoparticles functionalized with methionine (MFMNABs), was developed for effective elimination of arsenic from water. The material was characterized by FT-IR (Fourier Transform Infrared Spectroscopy), SEM (Scanning Electron Microscopic), XRD (X-ray Diffraction) and TEM (Transmission Electron Microscopy). The arsenic removal capacity of the material was studied by altering variables such as pH of the solution, contact time, adsorbent dose and adsorbate concentration. The maximal removal of As(III) was 99.56% under optimal conditions with an equilibrium time of 110 min and pH 7.0–7.5. The adsorption followed a second order kinetics and data best fitted the Langmuir isotherm with a correlation coefficient of R2 = 0.9890 and adsorption capacity (qm) of 6.6533 mg/g. The thermodynamic study showed entropy change (∆S) and enthalpy change (∆H) to be 34.32 J mol−1 K and 5.25 kJ mol−1, respectively. This study proved that it was feasible to treat an As(III) solution with MFMNABs. The synthesized adsorbent was cost-effective, environmentally friendly and versatile, compared to other adsorbents. The adsorption study was carried by low cost spectrophotometric method using N- bromosuccinimide and rhodamine-B developed in our laboratory.

Immobilization of hydrous iron oxides in porous alginate beads for arsenic removal from water

2018 ◽  
Vol 4 (8) ◽  
pp. 1114-1123 ◽  
Author(s):  
Abinashi Sigdel ◽  
Joowan Lim ◽  
Jeongwon Park ◽  
Hyoeun Kwak ◽  
Sojin Min ◽  
...  
Keyword(s):  
Iron Oxides ◽  
Aqueous Phase ◽  
Arsenic Removal ◽  
Alginate Beads ◽  
Removal Of Arsenic

For removal of arsenic in the aqueous phase, hydrous iron oxides (HIOs) were immobilized in alginate beads with enhanced porosity (designated as HIO-P-alginate beads).

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