Sorption studies on heavy metal removal using chitin/bentonite biocomposite

Saravanan, D.; Gomathi, T.; Sudha, P.N.

doi:10.1016/j.ijbiomac.2012.11.005

Cited by 90 publications

(42 citation statements)

References 49 publications

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“…3 and 4). With the increase of adsorbent dose, the reduction of physicochemical parameters and the removal of heavy metal ions increased up to 5 g. This was due to the increased available binding sites in the nanocomposite for the complexation of metal ions (Saravanan et al 2013). Equilibrium was almost attained after 5 g of adsorbent dosage as a result of decrease in available sites in the adsorbent.…”

Section: Effect Of Adsorbent Dosementioning

confidence: 98%

Removal of heavy metals from tannery effluent using chitosan-g-poly(butyl acrylate)/bentonite nanocomposite as an adsorbent

Nithya¹,

Sudha²

2016

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In the present era, due to industrial revolution in the developing countries like India, the ground water system has been largely polluted. Tannery effluent is a major source of aquatic pollution, and a large number of tanneries are scattered all over India particularly in Tamilnadu, Uttar Pradesh and West Bengal. This work deals with the removal of heavy metals chromium and lead and the reduction of the important physicochemical parameters like total dissolved solid (TDS), total suspended solid (TSS), total solids (TS), biochemical oxygen demand (BOD), chemical oxygen demand (COD), total hardness, salinity, turbidity and electrical conductivity from the tannery wastewater by using chitosan-g-poly(butyl acrylate)/bentonite nanocomposite as an adsorbent. The batch system was used to conduct the biosorption experiments. The influence of different experimental parameters, such as contact time, pH and amount of adsorbent, was evaluated. The results showed that the prepared nanocomposite can be used efficiently for the treatment of tannery wastewater containing heavy metals.

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Section: Effect Of Adsorbent Dosementioning

confidence: 98%

Removal of heavy metals from tannery effluent using chitosan-g-poly(butyl acrylate)/bentonite nanocomposite as an adsorbent

Nithya¹,

Sudha²

2016

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“…The Langmuir isotherm model suggests that the interaction of the adsorbate with the adsorbents is homogeneous in energy at the adsorption sites [73,79]. The Langmuir equation was calculated from the linear expression shown below:…”

Section: Adsorption Equilibrium Isothermsmentioning

confidence: 99%

“…The Langmuir isotherm can be expressed by a dimensionless constant R L , calculated using the following equation [33,79],…”

Section: Adsorption Equilibrium Isothermsmentioning

confidence: 99%

Adsorption of arsenic(V) oxyanion from aqueous solutions by using protonated chitosan flakes

Padilla-Rodríguez

Hernández-Viezcas

Peralta-Videa

et al. 2015

Separation Science and Technology

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Arsenate (As(V)) oxyanion removal was achieved utilizing diverse chitosancontaining adsorbents, such as chitosan beads, protonated chitosan flakes, chitosan powder and chitosan functionalized with meso-2,3-dimercapto succinic acid (DMSA), and glutaraldehyde (GLA). Protonated Chitosan Flakes (PCF) showed to be the more effective adsorbent for the removal of As(V) oxyanion from aqueous solutions, removing 97% at the initial concentration of 0.500 mg/L. As(V) adsorption was favored by Langmuir model, with a maximum adsorption capacity (Q 0 ) of 5.43 mg/g. The results showed that the PCF is an excellent non-toxic and inexpensive adsorbent for As(V) oxyanion removal in level traces from aqueous solution.

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“…The possibility to use natural chitin-bentonite biocomposites for removing toxic chromium(VI) ions in batch mode was conducted by Saravanan et al 134 The results showed that the prepared biocomposite materials were able to sorb more than 80% Cr(VI) ions at pH 4 with fast uptake in the initial 30 min and the sorption tends to slow after 45 min. From this study, one can conclude that the negatively charged nitrogen or oxygen ligands of chitin macromolecules serve as ancillary sites that are responsible for chelating higher amounts of metal ions.…”

Section: Pillaring Grafting and Intercalation Techniquesmentioning

confidence: 99%

CHAPTER 11. Natural Clays/Clay Minerals and Modified Forms for Heavy Metals Removal

Kurniawan¹,

Ismadji²,

Soetaredjo³

et al. 2014

Heavy Metals in Water

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Sorption studies on heavy metal removal using chitin/bentonite biocomposite

Cited by 90 publications

References 49 publications

Removal of heavy metals from tannery effluent using chitosan-g-poly(butyl acrylate)/bentonite nanocomposite as an adsorbent

Removal of heavy metals from tannery effluent using chitosan-g-poly(butyl acrylate)/bentonite nanocomposite as an adsorbent

Adsorption of arsenic(V) oxyanion from aqueous solutions by using protonated chitosan flakes

CHAPTER 11. Natural Clays/Clay Minerals and Modified Forms for Heavy Metals Removal

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