Precipitation of heavy metals from wastewater using simulated flue gas: Sequent additions of fly ash, lime and carbon dioxide

Chen, Quanyuan; Luo, Zhongyang; Hills, Colin D.; Xue, Gang; Tyrer, Mark

doi:10.1016/j.watres.2009.03.007

Cited by 364 publications

(149 citation statements)

References 39 publications

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“…Some peak broadening at ∼708.5 eV suggests the appearance of a new Fe(II) component in the "shell" [31]. Combined with the decrease of Fe(III) on the surface, a likely explanation for the increasing Fe(II) content is that Fe(OH) 3 is reduced to Fe(OH) 2 by zerovalent iron (ZVI). In addition, it is noted that the ratio of detected ZVI increases in the later period of the adsorption (from 90 min to 360 min) ( Table 1).…”

Section: Tem Analysis On the Core-shell Structure Of Nzvimentioning

confidence: 99%

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A new insight on the core–shell structure of zerovalent iron nanoparticles and its application for Pb(II) sequestration

Zhang

Zhou

et al. 2013

Journal of Hazardous Materials

133

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Section: Tem Analysis On the Core-shell Structure Of Nzvimentioning

confidence: 99%

“…Hence, it is urgent to develop effective measures to treat the wastes. Conventional processes such as chemical precipitation, ion-exchange, membrane and reverse osmosis process are often employed [2][3][4]. However, these methods have been found to be limited due to the generation of secondary pollutants or poor removal efficiency.…”

Section: Introductionmentioning

confidence: 99%

A new insight on the core–shell structure of zerovalent iron nanoparticles and its application for Pb(II) sequestration

Zhang

Zhou

et al. 2013

Journal of Hazardous Materials

133

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“…Currently, high copper concentrations in water are usually tackled by various methods and processes, for instance by chemical precipitation (Chen et al 2009;Fu and Wang 2011), e.g. hydroxide, sulphide or chelating precipitation, as well as ion-exchange or adsorption (Wan Ngah et al 2002;Akar et al 2009;Zhu and Li 2015;Jain et al 2016), e.g.…”

Section: Introductionmentioning

confidence: 99%

Phosphorylated nanocellulose papers for copper adsorption from aqueous solutions

Mautner

Maples

Kobkeatthawin

et al. 2016

Int. J. Environ. Sci. Technol.

116

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Copper is a major problem in industrial wastewater streams, seriously affecting the quality of potential drinking water. Several approaches, including continuous membrane processes or batch-wise application of adsorbents, are in use to tackle this problem. Unfortunately, these processes suffer from their particular drawbacks, such as low permeance or disposal of saturated adsorbents. However, a combination of these processes could constitute a step towards a more efficient copper removal solution. Here, we present a nanopaper ion-exchanger prepared from cellulose nanofibrils produced from fibre sludge, a paper industry waste stream, for the efficient, continuous removal of copper from aqueous solutions. This nanopaper ion-exchanger comprises phosphorylated cellulose nanofibrils that were processed into nanopapers by papermaking. The performance of these phosphorylated nanopaper membranes was determined with respect to their rejection of copper and permeance. It was shown that this new type of nanopaper is capable of rejecting copper ions during a filtration process by adsorption. Results suggest that functional groups on the surface of the nanopapers contribute to the adsorption of copper ions to a greater extent than phosphate groups within the bulk of the nanopaper. Moreover, we demonstrated that those nanopaper ion-exchangers could be regenerated and reused and that in the presence of calcium ions, the adsorption capacity for copper was only slightly reduced.

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“…Different physical and chemical methods have been applied to treat Pb-containing wastes. These methods include adsorption, flotation, ion exchange, membrane filtration and precipitation (Chen et al 2009;Kabbashi et al 2009;Landaburu-Aguirre et al 2009;Zhang et al 2009). The physico-chemical methods are generally expensive, so the need for hazardous reagents produces other toxic chemicals and requires long treatment time.…”

Section: Introductionmentioning

confidence: 99%

Removal of anthropogenic lead pollutions by a potent Bacillus species AS2 isolated from geogenic contaminated site

Cephidian

Makhdoumi

Mashreghi

et al. 2016

Int. J. Environ. Sci. Technol.

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A total of 422 bacterial isolates were obtained from the lead (Pb) ore in north-eastern Iran. The Pb tolerances of these strains were studied using microbroth serial dilution approach and 35 strains could grow up to 3250 ppm Pb concentration. Of these strains, 10 of them represented qualitatively high levels of Pb adsorption and were selected for quantitative studies. Strain AS2 which is phylogenetically related to genus Bacillus showed the highest level of Pb remediation. The effects of different factors, including pH, initial Pb concentration, temperature and inoculum size, were studied on the remediation process. Pb remediation capacity was reached at 74.5 mg/g (99.5 % of initial Pb) at pH 4.5, temperature 30°C, inoculum size 1.0 % (v/v) and an initial Pb concentration of 500 ppm after 24 h. Pb desorption capacity of strain was 66 %. The novel isolate could remove 98 % of Pb from the contaminated industrial wastes after 24 h. Pb uptaking to the cell surface was proven using scanning electron microscopic micrograph and energy-dispersive X-ray spectroscopy analysis. Most Pb removal efficiency was observed in the active cell culture as compared to the inactive cell and extracellular polymeric substances. The novel strain represents a good candidate for removal of environmental anthropogenic Pb pollutions.

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Precipitation of heavy metals from wastewater using simulated flue gas: Sequent additions of fly ash, lime and carbon dioxide

Cited by 364 publications

References 39 publications

A new insight on the core–shell structure of zerovalent iron nanoparticles and its application for Pb(II) sequestration

A new insight on the core–shell structure of zerovalent iron nanoparticles and its application for Pb(II) sequestration

Phosphorylated nanocellulose papers for copper adsorption from aqueous solutions

Removal of anthropogenic lead pollutions by a potent Bacillus species AS2 isolated from geogenic contaminated site

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