Synthesis and adsorption behavior of mesoporous alumina and Fe-doped alumina for the removal of dominant arsenic species in contaminated waters

Inchaurrondo, Natalia; Luca, Carla di; Mori, Fumihiko; Pintar, Albin; Žerjav, Gregor; Valiente, Manuel; Palet, Cristina

doi:10.1016/j.jece.2019.102901

Cited by 52 publications

(20 citation statements)

References 53 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For fresh Ca85Al15, the characteristic peaks at 864, 1430, and 1475 cm –1 were all assigned to CO 3 2– , , and the adsorption peak located at 3642 cm –1 corresponded to the O–H group, which might result from the residual of amorphous CaCO 3 and water adsorbed during the cooling process of fresh Ca85Al15 preparation. More importantly, the adsorption peak at 829 cm –1 related to the Al–O stretching vibration of Ca85Al15 occurred to slightly shift to 839 cm –1 after arsenic adsorption at 1200 °C for 30 min, suggesting the vibration of the As(V)–O overlap with the Al–O group. , Furthermore, a new characteristic peak appeared at 875 cm –1 after arsenic adsorption, which could be assigned to the As(V)–O symmetric stretch. , Thus, it can be inferred that the arsenic vapor (As 3+ ) was converted to the arsenic compound (As 5+ ) during arsenic adsorption. XRD results further confirmed the inference.…”

Section: Resultsmentioning

confidence: 95%

“…More importantly, the adsorption peak at 829 cm −1 related to the Al−O stretching vibration of Ca85Al15 40 occurred to slightly shift to 839 cm −1 after arsenic adsorption at 1200 °C for 30 min, suggesting the vibration of the As(V)−O overlap with the Al−O group. 41,42 Furthermore, a new characteristic peak appeared at 875 cm −1 after arsenic adsorption, which could be assigned to the As(V)−O symmetric stretch. 43,44 Thus, it can be inferred that the arsenic vapor (As 3+ ) was converted to the arsenic compound (As 5+ ) during arsenic adsorption.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Insight into High Temperature Gas-Phase Arsenic Capture by a CaO–Ca₁₂Al₁₄O₃₃ Synthetic Sorbent

Song

Liang

et al. 2021

Energy Fuels

View full text Add to dashboard Cite

Concerns about arsenic emission issues are growing as the arsenic discharged from coal-fired power plants seriously endangers the ecological environment and public health. The gas-phase arsenic capture by a CaO–Ca12Al14O33 synthetic sorbent at 1000–1200 °C in the simulated flue gas was conducted, with the influence of the addition ratio of Ca12Al14O33, temperature, retention time, and acid gases NO/SO2 considered in the study. The results indicated that the synthetic sorbent containing 15 wt % Ca12Al14O33 (Ca85Al15) exhibited much better arsenic adsorption performance than CaO, which was ascribed to the greatly strengthened sintering resistance of CaO particles by adding Ca12Al14O33, enabling arsenic adsorption and chemical reactions. Both the increasing temperature and retention time facilitated arsenic adsorption by Ca85Al15, and the hypertoxic arsenic vapor (As3+) was converted into arsenate (Ca3(AsO4)2) with less toxicity. In the presence of NO, the arsenic capture was gradually suppressed with increasing retention time. On the other hand, SO2 could slightly facilitate the capture of arsenic at 1000–1100 °C for 10 min; nevertheless, due to the formation of Ca4Al6O12SO4, the promotion effect was inhibited at a higher temperature and a longer retention time. In general, the study provided a basis for developing highly efficient solid sorbents toward controlling arsenic vapor emission derived from coal combustion, and the appropriate conditions for arsenic capture were at 1000–1100 °C.

show abstract

Section: Resultsmentioning

confidence: 95%

Section: Introductionmentioning

confidence: 99%

Insight into High Temperature Gas-Phase Arsenic Capture by a CaO–Ca₁₂Al₁₄O₃₃ Synthetic Sorbent

Song

Liang

et al. 2021

Energy Fuels

View full text Add to dashboard Cite

show abstract

“…These features are the basis for a powerful adsorbent. Inchaurrondo et al synthesized ordered MA to remove As(V) [18]. Li et al used MA as an adsorbent to remove Cr(VI) [19].…”

Section: Introductionmentioning

confidence: 99%

Adsorption of Cd(II) on mesoporous Al₂O₃ prepared from high-aluminum fly ash

Liu

et al. 2022

Mater. Res. Express

View full text Add to dashboard Cite

Cadmium (Cd) pollution has increased in water bodies due to an increase in industrial and agricultural activities, threatening human health and ecosystem stability. In this study, high-alumina fly ash (HAFA) was used as a low-cost raw material to prepare mesoporous alumina (MA) adsorbents to remove Cd(II) from water. The adsorption performance of the synthesized MA for Cd(II) was investigated at different pH values, initial Cd(II) concentrations, and contact times. The results showed that MA was successfully prepared from HAFA, and showed a specific surface area of 318.7 m2/g and average pore size of 4.5 nm. The adsorption of Cd(II) on the synthesized MA had the best adsorption environment at pH 7, and the contact time to reach the dynamic adsorption equilibrium was 60 min. The pseudo-second-order and Langmuir models accurately described chemisorption and monolayer adsorption of Cd(II) on the surface of the synthesized MA, respectively. The fitting results of the Intra-particle diffusion model show that the intraparticle diffusion of particles is not the only step controlling the rate during the adsorption of Cd(II) by synthetic materials. The maximum adsorption capacity of the synthesized MA for Cd(II) was calculated to be 88.26 mg/g using the Langmuir isotherm.

show abstract

“…Other studies uses alumina and iron doped alumnia [18] to effectively remove arsenic Many techniques for developing cheaper metal adsorbents, such as microbial biomass, bio-sorbents, sponge, various by-products, and resins have been investigated [13], [19], [20]. Among the different sorbents, waste plant material is promising, since it reuses and valorise a waste.…”

Section: Introductionmentioning

confidence: 99%

Comparative Study between Imprinted Polymer Technology and Economic Adsorption Methodologies for the Removal of Arsenic Species from Water

Samah

2021

cst

View full text Add to dashboard Cite

Among the various arsenic sources in the environment, water may pose the greatest threat to human health. Arsenic and its compounds are known to have adverse health effects on humans, including skin cancer, bladder cancer, kidney cancer, and lung cancer, as well as vascular diseases of the legs and feet. There are a few separation methods that have been studied to remove arsenic species from water. Methods to remove arsenic species such as adsorption and ion exchange, coagulation and flocculation and membrane filtration have been developed to remove arsenic species from water. However, certain separation methods require a sophisticated equipment and are too expensive. From the different possible methods, this review is based in adsorption studies using imprinted polymer technology and economic sorbents as a media to remove arsenic from water. The details of adsorption processes for imprinted polymer technology have been discussed briefly and the comparative properties for arsenic species removal using different types of sorbents has been addressed significantly for being a user-friendly, highly extended and inexpensive methodology. However, a few drawbacks for each sorbent have been determined and the details was included in this review.

show abstract

Synthesis and adsorption behavior of mesoporous alumina and Fe-doped alumina for the removal of dominant arsenic species in contaminated waters

Cited by 52 publications

References 53 publications

Insight into High Temperature Gas-Phase Arsenic Capture by a CaO–Ca₁₂Al₁₄O₃₃ Synthetic Sorbent

Insight into High Temperature Gas-Phase Arsenic Capture by a CaO–Ca₁₂Al₁₄O₃₃ Synthetic Sorbent

Adsorption of Cd(II) on mesoporous Al₂O₃ prepared from high-aluminum fly ash

Comparative Study between Imprinted Polymer Technology and Economic Adsorption Methodologies for the Removal of Arsenic Species from Water

Contact Info

Product

Resources

About

Synthesis and adsorption behavior of mesoporous alumina and Fe-doped alumina for the removal of dominant arsenic species in contaminated waters

Cited by 52 publications

References 53 publications

Insight into High Temperature Gas-Phase Arsenic Capture by a CaO–Ca12Al14O33 Synthetic Sorbent

Insight into High Temperature Gas-Phase Arsenic Capture by a CaO–Ca12Al14O33 Synthetic Sorbent

Adsorption of Cd(II) on mesoporous Al2O3 prepared from high-aluminum fly ash

Comparative Study between Imprinted Polymer Technology and Economic Adsorption Methodologies for the Removal of Arsenic Species from Water

Contact Info

Product

Resources

About

Insight into High Temperature Gas-Phase Arsenic Capture by a CaO–Ca₁₂Al₁₄O₃₃ Synthetic Sorbent

Insight into High Temperature Gas-Phase Arsenic Capture by a CaO–Ca₁₂Al₁₄O₃₃ Synthetic Sorbent

Adsorption of Cd(II) on mesoporous Al₂O₃ prepared from high-aluminum fly ash