Incorporating Global Englishes in K‐12 Classrooms

Selvi, Ali Fuad

doi:10.1002/9781119421702.ch7

Cited by 17 publications

(15 citation statements)

References 40 publications

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“…In contrast, the adsorption method is proven to be simple, efficient and cost-effective for heavy metal ions removal [14][15][16][17][18][19][20] . Various adsorbents, such as activated carbon [21][22] , polymers [23][24][25][26] , biosorbents [27] , and mesoporous silica-based materials [18,[28][29][30] have been proposed and studied extensively. Among these, mesoporous silica-based materials are considered as one of the most promising candidates for heavy metal removal applications due to their non-toxicity, ease of surface functionalization, and high adsorption efficiency [31][32][33][34][35] .…”

mentioning

confidence: 99%

Amino‐Functionalized Multilayer Core–Shell Mesoporous Organosilica Nanospheres for Cr(VI) Removal

Lai

Sun

Hou

et al. 2018

Adv Materials Inter

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Developing low-cost and highly efficient adsorbents for the removal of toxic heavy metal ions has been the subject of intensive research with the increasingly stringent water pollution control standards. In this paper, three types of amino-functionalized multi-layer core-shell mesoporous organosilica nanospheres (MCMONs) have been synthesized using an indirect co-condensation method for Cr(VI) removal applications. Results show that amino groups have been successfully immobilized on the nanospheres and these amino-functionalized MCMONs exhibit unique organic-inorganic multi-layer core-shell structures . When used as adsorbent for Cr(VI) removal, our N-(3-trimethoxysilylpropyl)diethylenetriamine functionalized MCMONs exhibits an maximum adsorption capacity of 279.92 mg/g at initial Cr(VI) concentration of 150 mg/L. This is about 20% greater than the highest Cr(VI) adsorption capacity previously reported for other core-shell silica-based adsorbents, demonstrating the great potential of our MCMONs in Cr(VI) removal applications.

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confidence: 99%

Amino‐Functionalized Multilayer Core–Shell Mesoporous Organosilica Nanospheres for Cr(VI) Removal

Lai

Sun

Hou

et al. 2018

Adv Materials Inter

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“…These non‐conventional adsorbents include bacterial, algal, and fungal biomass . Other low‐cost adsorbents have been prepared from sunflower stalks, maize cob and husk, shea butter seed husk, cassava waste, white star apple, saw dust‐carbon, sago waste, rice husk, peanut hull, walnut, lignite, sugarcane bagasse cellulose, sheep bone, and many others.…”

Section: Purification Of Mercury‐containing Wastewater Using Low‐costmentioning

confidence: 99%

Trapping Ionic Mercury Using Different Adsorbents

Ojedokun

Oluwole

Bello

2019

CLEAN Soil Air Water

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Of recent, adsorption process has gained a lot of attention as a cheap and effective means of removing trace metals from wastewater prior to discharge into water bodies. Being flexible in design and operation, the process has enabled an optimal recovery of trace metals such that the treated effluents meet the desired standards for waste disposal. Mercury is a toxicant released into the environment from natural and anthropogenic sources. It is notorious for having an unusual tendency to bio‐accumulate and persist in the food chain. Presence of mercury in food, especially those of aquatic sources has drastic implications on human health. Therefore, efforts have been made to develop and optimize low‐cost activated carbon (AC) as adsorbents for scavenging mercury from aqueous effluents. Herein, how mercury accumulates across the food chain, its health implications, and the recent advancement in the use of low‐cost ACs as adsorbent for trapping mercury from wastewater are highlighted. Relationship between the mercury removal efficiency and the surface morphology of the adsorbents as well as the influence of prevailing experimental condition on the sorption process were addressed. Challenges and future prospects of the use of low‐cost adsorbents in addressing mercury pollution in the environment are discussed.

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“…Therefore, the development of an effective method to remove Cr(VI) from industrial wastewater is essential for water treatment. Various methods such as adsorption, reverse osmosis, ion exchange,, and electrocoagulation have been reported for the removal of Cr(VI) from water. However, these methods are sometimes expensive and often inefficient at low concentrations.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of TiO₂ on different substrates by chemical vapor deposition for photocatalytic reduction of Cr(VI) in water

Nguyen

et al. 2019

J Chinese Chemical Soc

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TiO2 loaded on several substrates such as carbon fiber, aluminum plate, silica plate, and glass plate was prepared using the chemical vapor deposition (CVD) method for the photocatalytic reduction of Cr(VI) in water with the presence of ethanol under Ultraviolet (UV) illumination. As‐prepared samples were characterized by X‐Ray Diffraction (XRD), X‐ray photoelectron spectroscopy (XPS), Brunauer–Emmett–Teller (BET), and scanning electron microscopy (SEM). The catalyst with TiO2 loaded on carbon fiber possessed an extremely large surface area (1,463,91 m2/g), while the other catalysts possessed small surface areas (0.05–0.21 m2/g). The photocatalytic activity of TiO2 loaded on carbon fiber, which was determined by the conversion of Cr(VI) and the degradation of chemical oxygen demand (COD), was much higher than that of other catalysts. The reusability of TiO2 loaded on carbon fiber catalyst exhibited almost the same activity as the fresh catalyst. The results indicated that TiO2 loaded on carbon fiber is feasible for practical application.

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Incorporating Global Englishes in K‐12 Classrooms

Cited by 17 publications

References 40 publications

Amino‐Functionalized Multilayer Core–Shell Mesoporous Organosilica Nanospheres for Cr(VI) Removal

Amino‐Functionalized Multilayer Core–Shell Mesoporous Organosilica Nanospheres for Cr(VI) Removal

Trapping Ionic Mercury Using Different Adsorbents

Synthesis of TiO₂ on different substrates by chemical vapor deposition for photocatalytic reduction of Cr(VI) in water

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Incorporating Global Englishes in K‐12 Classrooms

Cited by 17 publications

References 40 publications

Amino‐Functionalized Multilayer Core–Shell Mesoporous Organosilica Nanospheres for Cr(VI) Removal

Amino‐Functionalized Multilayer Core–Shell Mesoporous Organosilica Nanospheres for Cr(VI) Removal

Trapping Ionic Mercury Using Different Adsorbents

Synthesis of TiO2 on different substrates by chemical vapor deposition for photocatalytic reduction of Cr(VI) in water

Contact Info

Product

Resources

About

Synthesis of TiO₂ on different substrates by chemical vapor deposition for photocatalytic reduction of Cr(VI) in water