Recent advances in adsorption and coagulation for boron removal from wastewater: A comprehensive review

Lin, Jui-Yen; Mahasti, Nicolaus N.N.; Huang, Yao Hui

doi:10.1016/j.jhazmat.2020.124401

Cited by 98 publications

(17 citation statements)

References 137 publications

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“… 3 Thus, the removal of lead and other heavy metals from water streams is a vital necessity. Until now, conventional methods to remove heavy metals include coagulation, 4 precipitation, chemical reduction, 5 ion exchange, 6 biological treatment, 7 membrane separation, 8 and filtration. 9 Nevertheless, such techniques have drawbacks such as high cost, low purification efficiency, and difficulty in regeneration.…”

Section: Introductionmentioning

confidence: 99%

Cadmium oxide nanoparticles/graphene composite: synthesis, theoretical insights into reactivity and adsorption study

2021

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Section: Introductionmentioning

confidence: 99%

Cadmium oxide nanoparticles/graphene composite: synthesis, theoretical insights into reactivity and adsorption study

2021

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“…This is due to, on the one hand, quite restrictive boron concentration limits in force in some countries and, on the other hand, the need to treat water due to its global scarcity. The result obtained in our research, 187 mg of boron per 1 g of dry Mn-biosorbent (equivalent to a sorption capacity of 13 mg B per 1 g of wet hydrogel), is a very high result, which makes the proposed manganese–chitosan hydrogel competitive to BSRs (a maximal capacity between 5.9 and 7.2 mg-B/g [ 53 ]). Table 5 compares the sorption capacities of the Mn-biosorbent and other sorbents reported over the last five years.…”

Section: Resultsmentioning

confidence: 94%

Boron Removal by Sorption on Modified Chitosan Hydrogel Beads

et al. 2021

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An excess concentration of boron in irrigation and drinking water can negatively affect the yield of plants and the human nervous system, respectively. To meet the recommended levels, hybrid biosorbent hydrogel beads based on chitosan and manganese (II-IV) were employed for the removal of boron from aqueous media. The results showed that the biosorbent effectively removed boric acid from the aqueous medium at neutral pH over a sorption time of 2 h and the liquid/hydrogel ratio of 20 mL/g, achieving a maximum sorption capacity near 190 mg/g. The modeling of the sorption equilibrium data indicated that the Freundlich isotherm equation gave the best fit out of the isotherm models examined. A pseudo-second-order model was found to best describe the sorption kinetics. The favorable attachment of manganese to the chitosan structure enabled the sorption of boron and was confirmed by FTIR, RS, XRD, SEM and ICP-OES methods. Boron desorption from the spent biosorbent was successfully achieved in three cycles using a NaOH solution. In general, the results of this research indicate that this method is one of the possibilities for improving water quality and may contribute to reducing pollution of the aquatic environment.

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“…According to the literature, aqueous solutions were found to exist mainly in the form of boronic acid [B(OH) 3 ] and borate [B(OH) 4 − ], with a pK a of 9.2 and a concentration of about 0.001 M (as shown in Figure S5). 62,63 These were found not to ionize and to exist mainly in the form of [B(OH) 3 ], with a pH value of ≤7. However, if the pH exceeded 9, then the predominant species of boron in the boric acid solution would be [B(OH) 4 − ].…”

Section: ■ Results and Discussionmentioning

confidence: 99%

Selective Removal of Boron from Aqueous Solutions Using ECH@NGM Aerogels with Excellent Hydrophilic and Mechanical Properties: Performance and Response Surface Methodology Analysis

Pan

Gan

et al. 2022

Langmuir

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The remediation of environmental boron contamination has received extensive research attention. The adsorbent ECH@NGM aerogel with high hydrophilic and mechanical properties was synthesized to remove boron. The ECH@NGM aerogel had a high adsorption capacity of 81.11 mg/g, which was 14.50% higher than that of commercial boron-selective resin Amberlite IRA743. The Freundlich model and pseudo-second-order model described the adsorption behavior well. In addition, the response surface methodology (RSM) could predict the experimental outcomes and optimize the reaction conditions, and X-ray photoelectron spectroscopy (XPS) and control tests were utilized to investigate probable adsorption mechanisms. These data showed that the B ← N coordination bond was the primary adsorption force. The adsorbent had good resistance to interference from coexisting salts, high reusability, good adsorption performance even after five reuse cycles, and a high desorption rate in a relatively short time. The adsorption performance in real brines could be maintained at 80%. Therefore, this work not only provided ECH@NGM aerogels for the removal of boron from brine but also elucidated the main adsorption processes between N-containing adsorbents and boron, facilitating the design of future adsorbents for boron removal.

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Recent advances in adsorption and coagulation for boron removal from wastewater: A comprehensive review

Cited by 98 publications

References 137 publications

Cadmium oxide nanoparticles/graphene composite: synthesis, theoretical insights into reactivity and adsorption study

Cadmium oxide nanoparticles/graphene composite: synthesis, theoretical insights into reactivity and adsorption study

Boron Removal by Sorption on Modified Chitosan Hydrogel Beads

Selective Removal of Boron from Aqueous Solutions Using ECH@NGM Aerogels with Excellent Hydrophilic and Mechanical Properties: Performance and Response Surface Methodology Analysis

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