Adsorption behavior of heavy metal ions from aqueous solution onto composite dextran-chitosan macromolecule resin adsorbent

Liu, Yang; Hu, Lishuang; Tan, Bo; Li, Jingru; Gao, Xiaohui; He, Yahao; Du, Xifeng; Zhang, Wei; Wang, Weili

doi:10.1016/j.ijbiomac.2019.09.044

Cited by 58 publications

(18 citation statements)

References 39 publications

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“…It is a permanent reaction known as activated adsorption, which requires high activation energy. Unlike the physical adsorption, the process of chemical adsorption is irreversible ( Singh and Gupta, 2016 ; Liu et al., 2019 ). Figure 2 shows the mechanisms of physical and chemical adsorption between adsorbent and adsorbate.…”

Section: Adsorption Processmentioning

confidence: 99%

Evolution of adsorption process for manganese removal in water via agricultural waste adsorbents

Rudi

Muhamad

Chuan

et al. 2020

Heliyon

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Manganese has recently been a topic of interest among researchers, particularly when 1,752 million tonnes of manganese are expected to be produced by the steel industry in 2020. Manganese discharges from industrial effluents have increased manganese contamination in water sources. Its concentrations of more than 0.2 mg/L in the water sources could have negative impacts on human health and the aquatic ecosystem. Thereby, the available water treatment processes face challenges in effectively removing manganese at low cost. In response to these challenges, adsorption has emerged as one of the most practical water treatment processes for manganese removal. In particular, agricultural waste adsorbents received a lot of attention owing to their low cost and high efficiency (99%) in the removal of manganese. Therefore, this paper reviews the removal of manganese by adsorption process using agricultural waste adsorbents. The factors affecting the adsorption process, the mechanisms, and the performances of the adsorbents are elucidated in detail.

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Section: Adsorption Processmentioning

confidence: 99%

Evolution of adsorption process for manganese removal in water via agricultural waste adsorbents

Rudi

Muhamad

Chuan

et al. 2020

Heliyon

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“…e negligible adsorption capacities of Cu (II) and Cd (II) at low solution pH are attributed to the presence of high quantities of H + . erefore, the surface of the adsorbent repels Cu (II) and Cd (II), increasing their migration resistance and decreasing their adsorption [32,33]. Solution pH of above 6 increases the concentration of OH − , gradually decreasing the repulsion resistance of Cu (II) and Cd (II) and their adsorption by SACL [34].…”

Section: Effect Of Phmentioning

confidence: 99%

Adsorption of Cu (II) and Cd (II) from Wastewater by Sodium Alginate Modified Materials

Zhao

Zhan

Xue

et al. 2020

Journal of Chemistry

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Natural macromolecule adsorbing materials are alternatives for remediation of heavy metals’ polluted waters. In this study, sodium alginate composite gel (SACL) was synthesized from sodium alginate (SA), polyethylene glycol oxide (PEO), and nanomaterials to remove wastewater Cu (II) and Cd (II). The adsorption efficiency of SACL was analysed in relation to the contact time, initial concentrations of metal ions, temperature, adsorbent dosage, and solution pH. Three models, i.e., kinetic model, isothermal adsorption model, and thermodynamic model, were used to fit the experimental data. Our results showed that the highest removal rates of Cu (II) and Cd (II) from wastewater were 96.8% and 78%, respectively, under the condition of the best liquid-solid ratio of 12.5 ml·g−1, and the contact time of 180 min (25°C). Overall, the SACL adsorption of Cu (II) and Cd (II) was spontaneous. The adsorption kinetics and the isothermal adsorption were fitted well with the pseudo-second-order kinetic equation and Langmuir equation, respectively. Combined with SEM-EDS and FTIR analysis, results suggested that SACL adsorbs wastewater Cu (II) and Cd (II) mainly through chemical reaction on its surface area. Altogether, this work concludes on SACL as an efficient and ecofriendly adsorbent for wastewater Cu (II) and Cd (II).

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“…It is a permanent reaction and also called activated adsorption which requires large activation energy. The process is irreversible unlike the physical adsorption [33], [79], [87]. Figure 7 shows the mechanism of physical and chemical adsorption between adsorbent and adsorbate.…”

Section: Referencesmentioning

confidence: 99%

A Review on Manganese Sources, Occurrences, Negative Impacts, and Potential Treatment Using Adsorption Process

2020

IJETER

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Manganese is one of the most abundant heavy metals that has been detected in surface water lately. This has become an environmental concern as manganese pose negative impacts on the ecosystem and water supply. The current water treatment process faces challenges in the efficient treatment of manganese at a low cost. This paper reviews the sources, occurrences and negative impacts of manganese towards living organisms as well as the treatment using the adsorption process. The potential synthesizes of low cost and environmentally friendly agricultural waste adsorbent to remove manganese is elucidate in this paper. The outcomes have the potential to reduce manganese concentration in the surface water and minimize the cost of water treatment.

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Adsorption behavior of heavy metal ions from aqueous solution onto composite dextran-chitosan macromolecule resin adsorbent

Cited by 58 publications

References 39 publications

Evolution of adsorption process for manganese removal in water via agricultural waste adsorbents

Evolution of adsorption process for manganese removal in water via agricultural waste adsorbents

Adsorption of Cu (II) and Cd (II) from Wastewater by Sodium Alginate Modified Materials

A Review on Manganese Sources, Occurrences, Negative Impacts, and Potential Treatment Using Adsorption Process

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