Simultaneous adsorption of atrazine and Cu (II) from wastewater by magnetic multi-walled carbon nanotube

Tang, Wangwang; Zeng, Guangming; Gong, Ji-Lai; Liu, Yang; Wang, Xiyang; Liu, Yuan Yuan; Liu, Zhifeng; Chen, Long; Zhang, Xiurong; Tu, De-Zhu

doi:10.1016/j.cej.2012.09.102

Cited by 291 publications

(78 citation statements)

References 59 publications

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“…Langmuir monolayer adsorption was also reported for atrazine adsorption onto activated carbon prepared from rubber tire waste (Gupta et al 2011) and commercial activated carbon fibers (Faur et al 2005). However, in most reports the sorption isotherms of atrazine for various adsorbents were best fitted by the Freundlich model (Kovaios et al 2006;Tang et al 2012;Labeau et al 1999). For the studied HACs, the maximum adsorption capacity is clearly enhanced by the thermal annealing of HAC in a nitrogen atmosphere (466 mg/g).…”

Section: Equilibrium Adsorption Of Atrazinementioning

confidence: 99%

“…Many interactions, such as electrostatic interactions (Salvestrini et al 2010), hydrophobic effects and van der Waals forces (Tang et al 2012;Kulikova and Perminova 2002), p-p interactions (Zhao et al 2013), or hydrogen bonding (Welhouse and Bleam 1993;Kovaios et al 2006) have been reported to be involved in atrazine adsorption on various adsorbents. Atrazine is a weakly basic herbicide with a pK b of 12.3 (Table 1).…”

Section: Mechanism Of Atrazine Adsorptionmentioning

confidence: 99%

“…The H-bonding mechanism plays an important role in the sorption of atrazine by soils and natural sediments (Kovaios et al 2006). Hydrophobic interactions have also been implicated in atrazine removal by multi-walled carbon nanotubes (MWCNTs) (Tang et al 2012).…”

Section: Introductionmentioning

confidence: 99%

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Adsorption of atrazine on hemp stem-based activated carbons with different surface chemistry

et al. 2015

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Surface-modified hemp stem-based activated carbons (HACs) were prepared and used for the adsorption of atrazine from aqueous solution, and their adsorption performance was examined. A series of HACs were prepared by potassium hydroxide activation of hemp stems, followed by subsequent modification by thermal annealing, oxidation with nitric acid and amination. The resultant HACs differed in surface chemistry, while possessing similar porous structure. The surface group characteristics were examined by X-ray photoelectron spectroscopy and measurement of the point of zero charge (pH PZC ). The adsorption of atrazine from aqueous solution was performed in static conditions. The Langmuir-Freundlich and Langmuir models gave a better fit for equilibrium isotherms compared with the Freundlich model. The atrazine adsorption process was controlled by an intraparticle diffusion mechanism with a significant contribution from film diffusion. The presence of oxygen and nitrogen functionalities on the carbon surface was found to be undesirable for atrazine adsorption. The superior adsorbent was obtained by heat treatment of HAC in an inert atmosphere at 700°C, resulting in a very high adsorption capacity due to its enhanced hydrophobicity. The adsorption of atrazine on the studied HACs mainly involves p-p dispersive interactions between the atrazine ring and the graphene layers of carbon.

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Section: Equilibrium Adsorption Of Atrazinementioning

confidence: 99%

Section: Mechanism Of Atrazine Adsorptionmentioning

confidence: 99%

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Adsorption of atrazine on hemp stem-based activated carbons with different surface chemistry

et al. 2015

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“…For example, copper has universally been considered to be very toxic at high concentration. It can cause copper poisoning in humans such as gastrointestinal problems, kidney damage, hair loss, nausea, anemia, hypoglycemia, severe headaches and even death [4], [6]. Cadmium is a toxic heavy metal of significant environmental and occupational concern.…”

Section: Introductionmentioning

confidence: 99%

“…Over a few years, the discarding solid and/or liquid waste products containing heavy metals emanating from the industrial processes has received a lot of attention, and consequently legislation for the protection of the environment has gradually become more rigid [1], [2], [4]- [6]. Heavy metals are particularly problematic because, unlike most organic contaminants, they are non-biodegradable and can accumulate in living tissues, posing great threat to both human health and ecological environment [3][4][5][6][7][8][9][10]. The most common heavy metals mainly include mercury, cadmium, lead, chromium, arsenic, zinc, copper, nickel, cobalt, etc.…”

Section: Introductionmentioning

confidence: 99%

Cadmium and Copper Sorption in a Clayey Chernozem Soil

Dăncilă¹,

Modrogan²,

Orbeci³

et al. 2016

Simi 2016

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The wastes used to amend soils sometimes have high concentrations of metals such as cadmium (Cd 2+ ) and cooper (Cu 2+ ). To determine the capacity of soils to retain these metals, the sorption capacities of different mine soils with and without reclamation treatments (tree vegetation and waste amendment) for Cd 2+ and Cu 2+ in individual and competitive situations were evaluated using the batch sorption technique. The untreated settling pond soil had low capacity for Cd 2+ and Cu 2+ retention. The site amended with wastes (sewage sludges and paper mill residues) increased the sorption capacity; most probably because of the higher concentrations of soil components with high retention capacity such as carbon and clay fraction. We can conclude that, despite the possible additions of Cd 2+ and Cu 2+ from wastes to degraded soils, sewage sludges and paper mill residues have a high sorption capacity that would prevent the metals from being in a mobile form.

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Nanoparticles and Nanocomposite Materials for Water Treatment: Application in Fixed Bed Column Filter

Dibyanshu¹,

Singh²,

Raychoudhury³

2022

Sustainable Water Treatment

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Simultaneous adsorption of atrazine and Cu (II) from wastewater by magnetic multi-walled carbon nanotube

Cited by 291 publications

References 59 publications

Adsorption of atrazine on hemp stem-based activated carbons with different surface chemistry

Adsorption of atrazine on hemp stem-based activated carbons with different surface chemistry

Cadmium and Copper Sorption in a Clayey Chernozem Soil

Nanoparticles and Nanocomposite Materials for Water Treatment: Application in Fixed Bed Column Filter

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