Development of nano-hydroxyapatite/chitosan composite for cadmium ions removal in wastewater treatment

Salah, Taher A.; Mohammad, Ahmad M.; Hassan, Mohamed A.; El‐Anadouli, Bahgat E.

doi:10.1016/j.jtice.2013.10.008

Cited by 119 publications

(60 citation statements)

References 33 publications

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“…Another promising application was described by Salah et al studied the removal of cadmium from wastewater using nano-sized hydroxyapatite/chitosan composite sorbents. It showed adsorption efficiency of around 122 mg/g [203]. Magnetic graphene/chitosan proved to be useful to remove organic dyes since the large number of hydroxyl and amino groups of chitosan together with the magnetism of Fe 3 O 4 exhibited good adsorption for certain organic dyes [204].…”

Section: Chitosanmentioning

confidence: 99%

Biological synthesis of metallic nanoparticles: plants, animals and microbial aspects

Das

Pachapur

Lonappan

et al. 2017

Nanotechnol. Environ. Eng.

376

138

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The green synthesis (GS) of different metallic nanoparticles (MNPs) has re-evaluated plants, animals and microorganisms for their natural potential to reduce metallic ions into neutral atoms at no expense of toxic and hazardous chemicals. Contrary to chemically synthesized MNPs, GS offers advantages of enhanced biocompatibility and thus has better scope for biomedical applications. Plant, animals and microorganisms belonging to lower and higher taxonomic groups have been experimented for GS of MNPs, such as gold (Au), silver (Ag), copper oxide (CuO), zinc oxide (ZnO), iron (Fe 2 O 3 ), palladium (Pd), platinum (Pt), nickel oxide (NiO) and magnesium oxide (MgO). Among the different plant groups used for GS, angiosperms and algae have been explored the most with great success. GS with animal-derived biomaterials, such as chitin, silk (sericin, fibroin and spider silk) or cell extract of invertebrates have also been reported. Gram positive and gram negative bacteria, different fungal species and virus particles have also shown their abilities in the reduction of metal ions. However, not a thumb rule, most of the reducing agents sourced from living world also act as capping agents and render MNPs less toxic or more biocompatible. The most unexplored area so far in GS is the mechanism studies for different natural reducing agents expect for few of them, such as tea and neem plants. This review encompasses the recent advances in the GS of MNPs using plants, animals and microorganisms and analyzes the key points and further discusses the pros and cons of GS in respect of chemical synthesis.

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Section: Chitosanmentioning

confidence: 99%

Biological synthesis of metallic nanoparticles: plants, animals and microbial aspects

Das

Pachapur

Lonappan

et al. 2017

Nanotechnol. Environ. Eng.

376

138

View full text Add to dashboard Cite

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“…Physical or chemical modification of chitosan using different materials has been studied to improve its properties and adsorption capacity. Chitosan composites such as chitosan/zeolite 25 , chitosan/ lignin 26 , chitosan/MgO 27 , nano-hydroxyapatite/chitosan 28 , and chitosan/polyacrylonitrile 29 have been developed to exhibit better adsorption together with enhancement in other physical and chemical properties.…”

Section: Introductionmentioning

confidence: 99%

Adsorption of Silver (I) From Aqueous Solution Using Chitosan/Montmorillonite Composite Beads

Jintakosol

Nitayaphat

2016

Mat. Res.

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Chitosan/montmorillonite (CTS-MMT) composite beads were used as adsorbents for the removal of silver ion (Ag + ) from aqueous solution. Equilibrium adsorption was achieved within 150 min at 3% MMT of chitosan solution. The optimum pH value for Ag + removal was found to be 6-7. The maximum adsorbent dosage for Ag + removal was 5 g/L. Under above maximum conditions the Ag + removal was 95.7%. The maximum adsorption capacities of CTS and CTS-MMT composite beads as obtained from Langmuir isotherm were found to be 38.46 and 43.48 mg/g, respectively. The adsorption kinetic agrees well with the pseudo second order model. The Ag + desorption of CTS-MMT composite bead was 17.39% at pH=4. SEM/EDX images confirm that after adsorption the Ag + were dispersed onto the composite bead surface. The adsorption and desorption experiment demonstrated that the CTS-MMT composite beads can be used as an effective adsorbents for removal of Ag + from aqueous solution.

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“…Chitosan (CTS) is the second most plentiful natural biopolymer derived from the deacetylation of chitin [8]. It contains numerous reactive amido and hydroxyl groups, and can be easily attached on the surface of APT via the electrostatic interaction between positively charged CTS and negatively charged APT.…”

Section: Introductionmentioning

confidence: 99%

Facile fabrication of carbon/attapulgite composite for bleaching of palm oil

Tian

Wang

et al. 2015

Journal of the Taiwan Institute of Chemical Engineers

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Development of nano-hydroxyapatite/chitosan composite for cadmium ions removal in wastewater treatment

Cited by 119 publications

References 33 publications

Biological synthesis of metallic nanoparticles: plants, animals and microbial aspects

Biological synthesis of metallic nanoparticles: plants, animals and microbial aspects

Adsorption of Silver (I) From Aqueous Solution Using Chitosan/Montmorillonite Composite Beads

Facile fabrication of carbon/attapulgite composite for bleaching of palm oil

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