Interaction between phosphate and acid-activated neutralized red mud during adsorption process

Ye, Jie; Cong, Xiangna; Zhang, Panyue; Hoffmann, Erhard; Zeng, Guangming; Liu, Yang; Fang, Wei; Wu, Yan; Zhang, Haibo

doi:10.1016/j.apsusc.2015.08.053

Cited by 61 publications

(23 citation statements)

References 44 publications

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“…Acidification methods improve the removal capacity of red mud of water contaminants by dissolving the calcium and acidsoluble salts, which in turn create new cavities and increase the surface area. Acids used for this purpose include concentrated hydrochloric acids, dilute hydrogen chloride or nitric acids [11,13,[27][28][29]. However, contrasting results have also been reported with regards to acid treatment, which was found to dissolve a portion of cancrinite and another type of compounds responsible for adsorption sites [30].…”

Section: Modifications Of Red Mud For Adsorption Processesmentioning

confidence: 99%

“…Recently, the interaction between acid activated-neutralized red mud (AaN-RM) and phosphate was examined [11]. The phosphate adsorption capacity of AaN-RM was found to be 492 mg g -1 .…”

Section: Coagulant Production With Red Mudmentioning

confidence: 99%

“…Countless attempts have been made to determine an environmentally safe method to dispose or utilize the red mud waste [5,6]. as an adsorbent and coagulant material in water and wastewater treatment [7][8][9][10][11], as a catalyst [12,13], as a building material, for metal recovery, and for ceramic production.…”

Section: Introductionmentioning

confidence: 99%

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Application of modified red mud in environmentally-benign applications: A review paper

Joseph

Taufiq‐Yap

Krishnan

et al. 2019

Environmental Engineering Research

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Red mud (RM) is a waste product that results from bauxite refining via the Bayer process. Its disposal remains an issue which raises significant environmental concerns, particularly if disposed on land or water bodies. Much research has been done on the use of red mud for environmentally-benign applications such as wastewater treatment, catalysis, the production of construction materials and glass ceramics, and for the recovery of metals. This paper reviews the current efforts made in the utilization of red mud as a valuable industrial by-product, which in turn should minimize its harmful impact on the environment. This detailed review compiles and highlights a variety of novel applications of modified red mud as a coagulant, an adsorbent for wastewater treatment, as well as, its use in catalytic processes and in building materials. The physico-chemical properties of red mud can be tuned by a range of treatment methods include acidification, neutralization and heat treatment. As revealed from the literature reviewed, modifications on red mud for the removal of various types of contaminants have shown promising results. However, further amendment and modifications on red mud are needed to utilize this industrial waste in many other industrial applications.

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Section: Modifications Of Red Mud For Adsorption Processesmentioning

confidence: 99%

“…Recently, the interaction between acid activated-neutralized red mud (AaN-RM) and phosphate was examined [11]. The phosphate adsorption capacity of AaN-RM was found to be 492 mg g -1 .…”

Section: Coagulant Production With Red Mudmentioning

confidence: 99%

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Application of modified red mud in environmentally-benign applications: A review paper

Joseph

Taufiq‐Yap

Krishnan

et al. 2019

Environmental Engineering Research

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show abstract

“…1 For phosphate removal, common adsorbents include metal and metal (hydr)oxides (aluminum and aluminum (hydr)oxides, iron and iron (hydr)oxides, zirconium (hydr)oxides), silicates, alcite, manganese dioxide, mud, y ash, and oxide tailings. 3,[5][6][7][8][9][10][11][12][13][14][15][16][17] Studies indicated that metal (hydr)oxides have high affinity and selectivity towards phosphate, while y ash and tailings are low-cost and easily available. However, these adsorbents have inherent limitations on application to phosphate removal, such as low adsorption capacity, poor adsorption kinetics or potential danger of secondary pollution.…”

Section: Introductionmentioning

confidence: 99%

Kinetic, equilibrium and thermodynamic studies for phosphate adsorption on aluminum hydroxide modified palygorskite nano-composites

et al. 2017

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“…Recently, many newly developed adsorbents for P removal have been investigated, including biochars (Haddad et al 2018), biomass (Phragmites sp.) (Markou et al 2015), magnetite (Yu et al 2017), zeolite , sepiolite (Yin et al 2013), red mud (Ye et al 2015), iron oxides (Ajmal et al 2018) and mussel shells (Paradelo et al 2016). Recovery of P from wastewater through adsorption onto natural solid waste material may provide an additional low-cost alternative, which could also create a P-rich product that could be repurposed (i.e.…”

Section: Introductionmentioning

confidence: 99%

Synthesis optimisation and characterisation of chitosan-calcite adsorbent from fishery-food waste for phosphorus removal

Pap

Kirk

Sekulić

et al. 2020

Environ Sci Pollut Res

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Here, Box-Behnken design (BBD) approaches were utilised to optimise synthesis methodology for the chitosan-calcite rich adsorbent (CCM) made from fishery-food waste material (crab carapace), using low-temperature activation and potassium hydroxide (KOH). The effect of activation temperature, activation time and impregnation ratio was studied. The final adsorbent material was evaluated for its phosphorus (P) removal efficiency from liquid phase. Results showed that impregnation ratio was the most significant individual factor as this acted to increase surface deacetylation of the chitin (to chitosan) and increased the number of amine groups (-NH 2 ) in the chitosan chain. P removal efficiency approached 75.89% (at initial P concentration of 20 mg/L) under optimised experimental conditions, i.e. where the impregnation ratio for KOH:carapace (g/g) was 1:1, the activation temperature was 105°C and the activation time was 150 min. Predicted responses were in good agreement with the experimental data. Additionally, the pristine and CCM material were further analysed using scanning electron microscopy with energy dispersive X-ray spectroscopy (SEM/EDX), Brunauer-Emmett-Teller technique (BET), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR) and thermal gravimetric analysis (TGA). Characterisation showed enhancements in surface chemistry (introducing positively charged amine groups), textural properties and thermal stability of the CCM.

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Interaction between phosphate and acid-activated neutralized red mud during adsorption process

Cited by 61 publications

References 44 publications

Application of modified red mud in environmentally-benign applications: A review paper

Application of modified red mud in environmentally-benign applications: A review paper

Kinetic, equilibrium and thermodynamic studies for phosphate adsorption on aluminum hydroxide modified palygorskite nano-composites

Synthesis optimisation and characterisation of chitosan-calcite adsorbent from fishery-food waste for phosphorus removal

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