Removal of As (V) from the aqueous solution by a modified granular ferric hydroxide adsorbent

Phạm, Tiến Sơn; Ngo, Huu Hao; Tran, Van Son; Khai, Nguyen Manh

doi:10.1016/j.scitotenv.2019.135947

Cited by 22 publications

(7 citation statements)

References 27 publications

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“…The caustic soda of the CCDB reacts with iron and zinc of the CCPB to produce metal hydroxides. It is similar to the conventional coagulation with iron salts where iron salts like ferric chloride reacts with alkalinity of water and wastewater to form ferric hydroxide which has a potential role in removing heavy metals, phosphorus, and colloidal particles from polluted water (Cui et al, 2016;Huang et al, 2019;Metcalf & Eddy;Pham et al, 2020). Yang et al, (2019) used wastewater from steel pickling which is acidic and rich in iron for preparation of polymeric ferric aluminum hydroxide coagulant to remove COD and heavy metals from paper mill wastewater.…”

Section: Proposed Options For Management and Treatment Of Wastewater Shock Loadsmentioning

confidence: 99%

Treatment of hazardous wastewater generated from metal finishing and electro‐coating industry via self‐coagulation: Case study

Abou‐Elela

Fawzy

El‐Shafai

2021

Water Environment Research

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The aim of this study is to find out a sustainable and cost-effective solution to manage hazardous shock loads from metal finishing and electro-coating industry. Results indicated that the main sources of hazardous wastewater are coming from batch chemical cleaning of degreasing basin (CCDB) (pH 13) and contains very hazardous chemicals, batch chemical cleaning of phosphating basin (CCPB) (pH 1.03) and contains high concentrations of iron (2300 mg/L) and zinc (2400 mg/L) and degreasing basin contents (DBC). Different treatment approaches were investigated. Results indicated that mixing CCDB with CCPB at their actual discharge allowed to form a self-coagulant of metal hydroxide which was utilized to treat the (DBC) followed by sedimentation. Removal efficiency of COD (87%), TSS (94%), and oil and grease (92%) were achieved. To compare the efficiency of this treatment approach, conventional chemical coagulation of DBC was carried out using FeCl 3 but the amount was very high. In conclusion, results proved the advantage of using self-coagulation to treat DBC since it eliminates the use of external chemicals and provides an integrated solution for the three main sources of hazardous pollutants. © 2021 Water Environment Federation • Practitioner points• The manuscript provide an innovative and sustainable solution to the shock loads of hazardous wastewater generated from metal finishing and E-coating industry by utilizing iron-rich wastewater from chemical cleaning of phosphating basin and alkaline wastewater from chemical cleaning of degreasing basin to produce metal hydroxide. • The metal hydroxide was cost-effective and technically effectively than external coagulant in treating highly polluted degreasing basin content at due discharge time. • Iron-rich wastewater could be used to produce self-coagulant of iron hydroxide.• Mixing iron rich wastewater and alkaline wastewater produce iron hydroxide.• Iron hydroxide is cost-effective in treating hazardous wastewater of degreasing basin.

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Section: Proposed Options For Management and Treatment Of Wastewater Shock Loadsmentioning

confidence: 99%

Treatment of hazardous wastewater generated from metal finishing and electro‐coating industry via self‐coagulation: Case study

Abou‐Elela

Fawzy

El‐Shafai

2021

Water Environment Research

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“…The spectrum data from iron-loaded goethite provide evidence of the formation of inner-sphere complexes, electrostatic surface complexation, and ion exchange. (Joshi et al 2019;Pham et al 2020).…”

Section: Adsorbent Physicochemical Characteristicsmentioning

confidence: 99%

“…The adsorption capacity is represented by the Freundlich constant "KF" (μg/g), which is associated with temperature and physical and chemical properties. Thus, the exponent "n" denotes a change in the adsorption intensity; also, the value of "n" indicates whether a favourablen > 1 or unfavourablen < 1, adsorption process (Pham et al 2020).…”

Section: Isotherm Studymentioning

confidence: 99%

“…In addition, magnetite, hematite, and siderite are naturally occurring iron-containing materials and have also been suggested as efficient adsorbents for heavy metal removal (Jönsson and Sherman 2008;Luther et al 2012). Pham and Wu reported that iron-containing materials such as iron oxides and hydroxides found highly effective adsorbents for removing arsenic from the groundwater (Pham et al 2020;Wu et al 2011;Zhang et al 2003).…”

Section: Introductionmentioning

confidence: 99%

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Adsorptive Removal of Arsenic by Synthetic Iron-loaded Goethite: Isotherms, Kinetics, and Mechanism

Talpur

Baloch

et al. 2021

Preprint

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Arsenic contamination in the groundwater is a worldwide concern. Therefore, this study was designed to use synthetic iron-loaded goethite to remove arsenic. Adsorption was significantly pH-dependent; hence, pH values between 5.0 and 7.0 resulted in the highest removal of arsenate and arsenite. Langmuir and Freundlich isotherms were almost perfectly matched in terms of strong positive coefficient of determination “R2” arsenate – 0.941 and 0.992 and arsenite – 0.945 and 0.993. The adsorption intensity “n” resulted as arsenate – 2.542 and arsenite – 2.707; besides separation factor “RL” found as arsenate – 0.1 and arsenite – 0.5, respectively. However, both “n” and “RL” leads to a favourable adsorption process. Temkin isotherm yielded in equal binding energies “bt” showing as 0.004 (J/μg) for both arsenate and arsenite. Jovanovic monolayers isotherm was dominated by the Langmuir isotherm. This resulting in maximum adsorption capacity “Qmax” of arsenate – 1369.877 and arsenite – 1276.742 (μg/g), which approaches to the saturated binding sites. Kinetic data revealed that adsorption equilibrium was achieved in 240 – arsenate and 360 – arsenite (minutes), respectively. Chemisorption was found effective with high “R2” values 0.981 – arsenate and 0.994 – arsenite, respectively, with the best fitting of pseudo-second order. Moreover, Brunauer Emmett Teller (BET), Scanning Electron Microscopy (SEM), X-ray diffraction (XRD), and Fourier Transform Infrared Spectroscopy (FTIR) were used to determine the morphological content, surface area, crystalline structure, and chemical characteristics of the adsorbent. It is anticipated that optimal arsenic removal was achieved by the porosity, chemical bindings, and surface binding sites of the adsorbent.

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“…Iron (III) oxide-hydroxide has been widely used in heavy metal removal for a long time. In a study by Pham et al ( 2020 ) successfully purified arsenate, a type of arsenic, from drinking water with nanoflower type α-FeOOH. They determined that the adsorption capacity of nanoflower was 475 µg/g.…”

Section: Introductionmentioning

confidence: 99%

A comparative study of iron nanoflower and nanocube in terms of antibacterial properties

et al. 2023

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It is known that heavy metal containing nanomaterials can easily prevent the formation of microbial cultures. The emergence of new generation epidemic diseases in the last 2 years has increased the importance of both personal and environmental hygiene. For this reason, in addition to preventing the spread of diseases, studies on alternative disinfectant substances are also carried out. In this study, the antibacterial activity of nanoflower and nanocube, which are easily synthesized and nanoparticle species containing iron, were compared. The antioxidant abilities of new synthesized NF@FeO(OH) and NC@α-Fe 2 O 3 were tested by DPPH scavenging activity assay. The highest DPPH inhibition was achieved with NC@α-Fe 2 O 3 as 71.30% at 200 mg/L. NF@FeO(OH) and NC@α-Fe 2 O 3 demonstrated excellent DNA cleavage ability. The antimicrobial capabilities of NF@FeO(OH) and NC@α-Fe 2 O 3 were analyzed with micro dilution procedure. In 500 mg/L, the antimicrobial activity was 100%. In addition to these, the biofilm inhibition of NF@FeO(OH) and NC@α-Fe 2 O 3 were investigated against S. aureus and P. aeruginosa and it was found that they showed significant antibiofilm inhibition. It is suggested that additional studies can be continued to be developed and used as an antibacterial according to the results of the nanoparticles after various toxicological test systems.

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Removal of As (V) from the aqueous solution by a modified granular ferric hydroxide adsorbent

Cited by 22 publications

References 27 publications

Treatment of hazardous wastewater generated from metal finishing and electro‐coating industry via self‐coagulation: Case study

Treatment of hazardous wastewater generated from metal finishing and electro‐coating industry via self‐coagulation: Case study

Adsorptive Removal of Arsenic by Synthetic Iron-loaded Goethite: Isotherms, Kinetics, and Mechanism

A comparative study of iron nanoflower and nanocube in terms of antibacterial properties

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