Single and binary adsorption of heavy metal ions from aqueous solutions using sugarcane cellulose-based adsorbent
TL;DR: The result from SEM-EDAX revealed that the adsorption of metal ions on bioadsorbent was mainly driven by coordination, ion exchange and electrostatic association.
About: This article is published in Bioresource Technology.The article was published on 2017-10-01. It has received 275 citations till now. The article focuses on the topics: Adsorption & Langmuir adsorption model.
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TL;DR: In this article, the relationship between the factors (pH, temperature, biosorbent dosage, retention time and functional groups) and removal efficiency has been investigated, and the purpose of this work is to introduce optimal conditions for biosorption reaction.
Abstract: Common methods for removing heavy metals have numerous drawbacks, including low efficiency and high costs. In the biosorption of heavy metals, ions biosorbed on surfaces and active sites of biosorbents. In this paper, the relationship between the factors (pH, temperature, biosorbent dosage, retention time and Functional groups) and removal efficiency has been investigated. The purpose of this work is to introduce optimal conditions for biosorption reaction. Also, by introducing various types of biosorbents, expressed the advantages and method of preparation for each one. In various papers, not all biosorption isotherm models have been mentioned, there are described various types of biosorption isotherm, kinetics and thermodynamics models and important process data is set up for quick access to the tables.
198 citations
TL;DR: Several knowledge gaps are stated in this new line of research and it is apparent that degradable microplastics, such as polylactic acid or polybutylene succinate, have a greater affinity for hydrophobic contaminants than conventional synthetic non-degradablemicroplastics according to recent studies.
180 citations
TL;DR: Analysis of the adsorption of levofloxacin onto polyvinyl chloride (PVC) in an aqueous solution confirmed that electrostatic interactions, ion exchange, intermolecular hydrogen bonds, and halogen bond cooperation were the main Adsorption mechanisms.
154 citations
TL;DR: It is demonstrated that polyethyleneimine modification makes BC a potential bioadsorbent for heavy metal ion removal in waste water.
150 citations
Cites background or methods from "Single and binary adsorption of hea..."
...Cellulose and cellulose-based materials including some agro-industrial wastes such as crop straws/stalks, bagasse, crop/fruit/nut shells, etc. have been applied for heavy metal ion removal (Wang et al., 2017; Suhas et al., 2016; De Luna et al., 2015)....
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...have been applied for heavy metal ion removal (Wang et al., 2017; Suhas et al., 2016; De Luna et al., 2015)....
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TL;DR: The in situ reduced metal nanoparticle-loaded ALG/PEI composite hydrogel provided a sustainable utilization route of the heavy metal ion with a promising adsorption-catalysis ability and will present an effective and practical paradigm for the cascaded treatment and recycling of heavy metal ions in wastewater.
108 citations
References
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TL;DR: In this paper, a literature review of the use of sorbents and biosorbents to treat polluted aqueous effluents containing dyes:organics or metal ions has been conducted.
13,746 citations
TL;DR: It is evident from the literature survey articles that ion-exchange, adsorption and membrane filtration are the most frequently studied for the treatment of heavy metal wastewater.
6,844 citations
"Single and binary adsorption of hea..." refers background in this paper
...The water pollution caused by heavy metal ions generated in various industrial processes, which are toxic, bioaccumulative and non-degradable, has become a global issue and raised significant environmental concerns (Boamah et al., 2015; Fu and Wang, 2011; Salman et al., 2015)....
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TL;DR: In this paper, the sorption of two dyes, namely Basic Blue 69 and Acid Blue 25 onto peat has been studied in terms of pseudo-second order and first order mechanisms for chemical sorption as well as an intraparticle diffusion mechanism process.
3,502 citations
"Single and binary adsorption of hea..." refers background in this paper
...Equation of pseudo-first-order kinetics model (Ho and McKay, 1998): 1k t t e1Q Q (1 e ) (2) Where is the amount of adsorbate adsorbed at time t (mg g -1 ); is the adsorption capacity in equilibrium (mg g-1); is the rate constant of pseudo-first-order model (min -1 ); and t is the time (min)....
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TL;DR: The findings demonstrate the promise of porous cyclodextrin-based polymers for rapid, flow-through water treatment and outperformed a leading activated carbon for the rapid removal of a complex mixture of organic micropollutants at environmentally relevant concentrations.
Abstract: The global occurrence in water resources of organic micropollutants, such as pesticides and pharmaceuticals, has raised concerns about potential negative effects on aquatic ecosystems and human health. Activated carbons are the most widespread adsorbent materials used to remove organic pollutants from water but they have several deficiencies, including slow pollutant uptake (of the order of hours) and poor removal of many relatively hydrophilic micropollutants. Furthermore, regenerating spent activated carbon is energy intensive (requiring heating to 500-900 degrees Celsius) and does not fully restore performance. Insoluble polymers of β-cyclodextrin, an inexpensive, sustainably produced macrocycle of glucose, are likewise of interest for removing micropollutants from water by means of adsorption. β-cyclodextrin is known to encapsulate pollutants to form well-defined host-guest complexes, but until now cross-linked β-cyclodextrin polymers have had low surface areas and poor removal performance compared to conventional activated carbons. Here we crosslink β-cyclodextrin with rigid aromatic groups, providing a high-surface-area, mesoporous polymer of β-cyclodextrin. It rapidly sequesters a variety of organic micropollutants with adsorption rate constants 15 to 200 times greater than those of activated carbons and non-porous β-cyclodextrin adsorbent materials. In addition, the polymer can be regenerated several times using a mild washing procedure with no loss in performance. Finally, the polymer outperformed a leading activated carbon for the rapid removal of a complex mixture of organic micropollutants at environmentally relevant concentrations. These findings demonstrate the promise of porous cyclodextrin-based polymers for rapid, flow-through water treatment.
1,279 citations
TL;DR: In this article, the authors proposed a classification of metal ions according to their binding preferences (i.e. whether they seek out O-, N- or S-containing ligands).
1,144 citations
"Single and binary adsorption of hea..." refers background in this paper
...According to the Nieboer and Richardson (1980), the larger the Xm 2 r had more characteristics of soft acids (HSAB theory), and the meal ions preferentially interacted with the functional group in the following order: S>N>O containing groups....
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