Removal of p-nitrophenol and Naphthalene from Petrochemical Wastewater Using SWCNTs and SWCNT-COOH Surfaces

Moradi, Omid; Yari, Mohammad; Moaveni, Payam; Norouzi, Mehdi

doi:10.1080/1536383x.2010.533309

Cited by 47 publications

(7 citation statements)

References 58 publications

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“…Compared with the pseudo-first-order model (R 2 = 0.34 -0.68), the pseudo-second-order model described the adsorption process more precisely with relatively higher R 2 values (0.70 -0.96) and lower ARE values [5] (Table 1). This indicates that the adsorption mechanism depended on the adsorbate and adsorbent and the rate-limiting step is a chemical adsorption [47].…”

Section: Figmentioning

confidence: 94%

“…It was reported that the global market for CNTs was approximately 90.5 million dollars in 2010, and global revenues will exceed 1 billion dollars by 2015 [2]. In addition, owing to their large surface area, excellent stability, and rich surface functionalities, CNTs have been considered as extremely superior adsorbents [3][4][5][6]. The adsorption of heavy metals, organic pollutants, and natural organic matters by CNTs has been widely reported [4,[7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

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Adsorption of sulfamethoxazole and 17β-estradiol by carbon nanotubes/CoFe2O4 composites

Wang

Sun

Pan

et al. 2015

Chemical Engineering Journal

158

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Section: Figmentioning

confidence: 94%

Section: Introductionmentioning

confidence: 99%

Adsorption of sulfamethoxazole and 17β-estradiol by carbon nanotubes/CoFe2O4 composites

Wang

Sun

Pan

et al. 2015

Chemical Engineering Journal

158

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“…Recent studies of the adsorption of various aromatic compounds onto single-walled CNTs (SWCNTs), multi-walled CNTs (MWCNTs) and graphene nanoplatelets (GnPs) have reported higher adsorption capacities than activated carbon (AC), the most widely used material for water purication to date. [9][10][11][12][13][14][15][16] While these studies demonstrate the efficacy of these adsorbents, improved adsorption performance may be realized by using graphene and CNTs together. The combination of these materials allows for an optimization of performance and cost.…”

Section: Introductionmentioning

confidence: 99%

Free-standing carbon nanotube/graphene hybrid papers as next generation adsorbents

et al. 2014

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The adsorption of a series of aromatic compounds from aqueous solution onto purified, free-standing single-walled carbon nanotube/graphene nanoplatelet hybrid papers is studied both experimentally and theoretically. Experimental data is obtained via changes in optical absorption spectra of the aqueous solutions and is used to extract all parameters required to implement a semi-empirical mass-transfer model. Agreement between experiment and theory is excellent and data from all compounds can be cast on a universal adsorption curve. Results indicate that the rate of adsorption and long-time capacity of many aromatic compounds on hybrid paper adsorbent significantly exceeds that of activated carbon by at least an order of magnitude. The combination of carbon nanotubes and graphene also promotes on the order of a 25% improvement in adsorption rates and capacities than either component alone. Hybrid nanocomposites show significant promise as adsorption materials used for environmental remediation efforts.

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“…However, although efficient in removing pollutants, the field application of bimetallic NPs should be viewed with caution given their potential to generate reactive intermediates and final toxic products (Li et al, 2011; Yuan et al, 2012). Carbonaceous nanomaterials and their composites exhibited good adsorption capacities for different classes of halogenated organics and polychlorinated biphenyls (Bikshapathi et al, 2011; Ma et al, 2011; Peng et al, 2003; Velzeboer et al, 2014; Wang et al, 2014a,b; Zhou et al, 2011) as well as organic compounds, polycyclic aromatic hydrocarbons, volatile organic compounds, herbicides, industrial dyes, and heavy metals in water (Farghali et al, 2013; Liu et al, 2011a,b; Hou et al, 2013; Hüffer et al, 2012; Moradi et al, 2011; Wang et al, 2014a, Wang et al, 2014b).…”

Section: Nanotechnology For Detection and Remediation Of Environmentamentioning

confidence: 99%

Nanotechnology in agriculture: Opportunities, toxicological implications, and occupational risks

Iavicoli

Leso

Beezhold

et al. 2017

Toxicology and Applied Pharmacology

424

149

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Nanotechnology has the potential to make a beneficial impact on several agricultural, forestry, and environmental challenges, such as urbanization, energy constraints, and sustainable use of resources. However, new environmental and human health hazards may emerge from nano-enhanced applications. This raises concerns for agricultural workers who may become primarily exposed to such xenobiotics during their job tasks. The aim of this review is to discuss promising solutions that nanotechnology may provide in agricultural activities, with a specific focus on critical aspects, challenging issues, and research needs for occupational risk assessment and management in this emerging field. Eco-toxicological aspects were not the focus of the review. Nano-fertilizers, (nano-sized nutrients, nano-coated fertilizers, or engineered metal-oxide or carbon-based nanomaterials per se), and nano-pesticides, (nano-formulations of traditional active ingredients or inorganic nanomaterials), may provide a targeted/controlled release of agrochemicals, aimed to obtain their fullest biological efficacy without over-dosage. Nano-sensors and nano-remediation methods may detect and remove environmental contaminants. However, limited knowledge concerning nanomaterial biosafety, adverse effects, fate, and acquired biological reactivity once dispersed into the environment, requires further scientific efforts to assess possible nano-agricultural risks. In this perspective, toxicological research should be aimed to define nanomaterial hazards and levels of exposure along the life-cycle of nano-enabled products, and to assess those physico-chemical features affecting nanomaterial toxicity, possible interactions with agro-system co-formulants, and stressors. Overall, this review highlights the importance to define adequate risk management strategies for workers, occupational safety practices and policies, as well as to develop a responsible regulatory consensus on nanotechnology in agriculture.

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Removal of p-nitrophenol and Naphthalene from Petrochemical Wastewater Using SWCNTs and SWCNT-COOH Surfaces

Cited by 47 publications

References 58 publications

Adsorption of sulfamethoxazole and 17β-estradiol by carbon nanotubes/CoFe2O4 composites

Adsorption of sulfamethoxazole and 17β-estradiol by carbon nanotubes/CoFe2O4 composites

Free-standing carbon nanotube/graphene hybrid papers as next generation adsorbents

Nanotechnology in agriculture: Opportunities, toxicological implications, and occupational risks

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