Adsorption of copper ions onto nano-scale zero-valent iron impregnated cashew nut shell

Prabu, D.; Parthiban, R.; Kumar, P. Senthil; Kumari, Nupur; Saikia, Paharika

doi:10.1080/19443994.2015.1007488

Cited by 53 publications

(16 citation statements)

References 47 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…To mitigate these issues, NZVI is impregnated with supporting material such as cashew nut shell (CNS) with the help of sonication operation. This does not only provide better operation but enhances the reduction ability of NZVI (Fu et al 2014;Prabu et al 2016). Finally, the efficient removal of nickel ions in aqueous environment can be achieved by utilizing the synthesized nanoscale zerovalent iron-impregnated cashew nut shell (NZVI-CNS).…”

Section: Introductionmentioning

confidence: 98%

“…The removal mechanism is directional transfer of electrons from NZVI to the contaminants and then the contaminant is transformed into non-toxic or less-toxic species. In addition, it also degrades and oxidize the organic compounds in the presence of dissolved oxygen (DO) (Fu et al 2014;Prabu et al 2015Prabu et al , 2016. Mostly, direct of use of NZVI is restricted due to its lack of stability, easy aggregation, and facing difficulties in separating NZVI from treated effluents.…”

Section: Introductionmentioning

confidence: 98%

“…This increase in interest on the use of NZVI is owing to its higher surface area, lower cost, non-toxic, and higher reactivity (Uzum et al 2009;Boparai et al 2011;Arshadi et al 2014;Prabu et al 2016). The removal mechanism is directional transfer of electrons from NZVI to the contaminants and then the contaminant is transformed into non-toxic or less-toxic species.…”

Section: Introductionmentioning

confidence: 98%

“…The commercial adsorbent such as activated carbons (Rajkumar et al 2014), polymeric materials (Anitha et al 2015), clays (Lee and Tiwari 2012), biosorbents , and other adsorbents have been commonly used for this adsorption process. Many adsorbents usually have lower adsorption capacity, higher cost, longer equilibrium time, poor regeneration abilities, and separation problems (Prabu et al 2015(Prabu et al , 2016. Hence, adsorbents qualifying the aforementioned problems were synthesized and employed for removal of metal ions from aqueous environment.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Nanoscale zero-valent iron-impregnated agricultural waste as an effective biosorbent for the removal of heavy metal ions from wastewater

Kumar¹,

Saravanan²,

Rajan³

et al. 2016

Text Cloth Sustain

View full text Add to dashboard Cite

A novel, nanoscale zero-valent iron-impregnated cashew nut shell (NZVI-CNS) was synthesized towards the removal of Ni(II) ions from aqueous solution using impregnation procedure. The factors affecting Ni(II) ion adsorption in a batch mode were studied including the initial metal ion concentration, solution pH, temperature, adsorbent dosage, and contact time. The adsorption isotherm and kinetics could be described well with Freundlich and pseudo firstorder, respectively. The maximum monolayer adsorption capacity for the removal of Ni(II) ions was found to be 70.05 mg/g. The calculated thermodynamic parameters showed that the removal of Ni(II) ions by the NZVI-CNS was spontaneous, feasible, and exothermic in nature. The amount of adsorbent needed to treat the known volume of the effluent was calculated by using single-stage batch adsorber design. The experimental results specifies that the NZVI-CNS have a high adsorption capacity for the removal of Ni(II) ions from aqueous solution.

show abstract

Section: Introductionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Nanoscale zero-valent iron-impregnated agricultural waste as an effective biosorbent for the removal of heavy metal ions from wastewater

Kumar¹,

Saravanan²,

Rajan³

et al. 2016

Text Cloth Sustain

View full text Add to dashboard Cite

show abstract

“…, etc. (Zhang 2003;Qiu et al 2013;Lin et al 2008;Li et al 2010;Madhavi et al 2013;Prabu et al 2016;Liang et al 2014;Yuan and Lien 2006;Vernon and Bonzongo 2014). And also many organic compounds like phenol and 4-chloro-2-nitrophenol have been shown to get removed by adsorption onto nZVI (Boparai et al 2011;Shimizu et al 2012;Adami and Fakhri 2013).…”

Section: Introductionmentioning

confidence: 99%

Enhanced removal of dissolved aniline from water under combined system of nano zero-valent iron and Pseudomonas putida

Bose

Dey

Saha

et al. 2016

Sustain. Water Resour. Manag.

View full text Add to dashboard Cite

Aniline is a toxic chemical released by many industries. Removal of pollutants by micro-organisms is the most recent area of research whereas nano zero valent iron (nZVI) in recent time has been widely used in treatment of groundwater. The present study aims to understand the nature of interaction of nZVI with bacteria and removal of aniline under a combined system of bacteria and nZVI. nZVI were synthesized through conventional process and its adsorption studies on aniline removal were performed. Pseudomonas putida MTCC 1194 strain was acclimatized to aniline in Basal salt medium for a period of 2 months. The maximum growth rate and yield coefficient of cells were determined and within 6 h 99 % removal of 200 ppm aniline was found to be achieved. Adsorption studies were performed using nZVI of different concentration on 200 ppm aniline for 6 h. Maximum aniline removal was obtained at 85 % in distilled water and 92 % in basal salt medium, respectively using 5 g/L nZVI. nZVI was found to be growth inducer to the mentioned strain. A combined system of aniline removal was studied consisting of biodegradation and adsorption to nZVI in which 99 % aniline removal was obtained in 2.5 h containing 61 % of aniline removal through biodegradation and the rest through collective adsorption and biosorption. Maximum adsorption to nZVI was found during the lag phase of cell growth and on reaching log phase adsorption rate declined and removal through biodegradation dominated.

show abstract

Facile preparation of magnetic chitosan modified with thiosemicarbazide for adsorption of copper ions from aqueous solution

Cui

Wang

Zeng

2016

J of Applied Polymer Sci

View full text Add to dashboard Cite

In this study, magnetic chitosan modified with thiosemicarbazide (TSC-Fe 3 O 4 /CTS) was facilely synthesized with glutaraldehyde as the crosslinker, and its application for removal of Cu(II) ions was investigated. The as-prepared TSC-Fe 3 O 4 /CTS was characterized by Fourier transform infrared spectroscopy (FTIR), X-ray powder diffraction (XRD), and scanning electron microscopy (SEM). The results showed that TSC-Fe 3 O 4 /CTS has high adsorption capacity and selectivity towards Cu(II) ions. Adsorption experiments were carried out with different parameters such as pH, solution temperature, contact time and initial concentration of Cu(II) ions. The adsorption process was better described by the pseudo-second-order model. The sorption equilibrium data was fitted well with the Langmuir isotherm model and the maximum adsorption capacity toward Cu(II) ions was 256.62 mg/g. The thermodynamic parameters indicated that the adsorption process of Cu(II) ions was exothermic spontaneous reaction. Moreover, this adsorbent showed excellent reusability and the adsorption property remained stable after five cycles. This adsorbent is believed to be one of the promising and favorable adsorbent for the removal of Cu(II) ions from aqueous solution. V C 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017, 134, 44528.

show abstract

Adsorption of copper ions onto nano-scale zero-valent iron impregnated cashew nut shell

Cited by 53 publications

References 47 publications

Nanoscale zero-valent iron-impregnated agricultural waste as an effective biosorbent for the removal of heavy metal ions from wastewater

Nanoscale zero-valent iron-impregnated agricultural waste as an effective biosorbent for the removal of heavy metal ions from wastewater

Enhanced removal of dissolved aniline from water under combined system of nano zero-valent iron and Pseudomonas putida

Facile preparation of magnetic chitosan modified with thiosemicarbazide for adsorption of copper ions from aqueous solution

Contact Info

Product

Resources

About