Efficient Pb(II) removal using sodium alginate–carboxymethyl cellulose gel beads: Preparation, characterization, and adsorption mechanism

Ren, Huixue; Gao, Zhimin; Wu, Daoji; Jiang, Jiahui; Sun, Yan‐Qiong; Luo, Congwei

doi:10.1016/j.carbpol.2015.11.002

Cited by 294 publications

(111 citation statements)

References 46 publications

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“…Followed by the C-H stretching vibration peak at 2931 cm −1 , the peak of the composite film almost disappeared, which may be related to the participation of C-H in the Na + crosslinking reaction [47]. Finally, the -COO stretching vibration absorption peak at 1321 cm −1 , the group pattern of the composite film becomes sharp, indicating that the composite film contains SA component, and is related to CS-NH 3+ protonation and hydration [48,49]. This is also related to the interaction between CS and CMC molecules [13].…”

Section: Ftir Analysismentioning

confidence: 94%

Preparation and Properties of Sodium Carboxymethyl Cellulose/Sodium Alginate/Chitosan Composite Film

2018

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A sodium alginate/chitosan solution was prepared by dissolving sodium alginate, chitosan, and glycerol in an acetic acid solution. This solution was then combined with a sodium carboxymethyl cellulose solution and the mixture was cast onto a glass plate and dried at a constant temperature of 60 • C. Then, a carboxymethyl cellulose/sodium alginate/chitosan composite film was obtained by immersing the film in a solution of a cross-linking agent, CaCl 2 , and air-drying the resulting material. First, the most advantageous contents of the three precursors in the casting solution were determined by a completely random design test method. Thereafter, a comprehensive orthogonal experimental design was applied to select the optimal mass ratio of the three precursors. The composite film obtained with sodium alginate, sodium carboxymethyl cellulose, and chitosan contents of 1.5%, 0.5%, and 1.5%, respectively, in the casting solution displayed excellent tensile strength, water vapor transmission rate, and elongation after fracture. Moreover, the presence of chitosan successfully inhibited the growth and reproduction of microorganisms. The composite film exhibited antibacterial rates of 95.7% ± 5.4% and 93.4% ± 4.7% against Escherichia coli and Staphylococcus aureus, respectively. Therefore, the composite film is promising for antibacterial food packaging applications.

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Section: Ftir Analysismentioning

confidence: 94%

Preparation and Properties of Sodium Carboxymethyl Cellulose/Sodium Alginate/Chitosan Composite Film

2018

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“…Once the surfactants and heavy metals coexist in the environment, it can be effective for severe damages to living species because of the multiple toxicities of each and the complexation compounds of them [8,9]. To date, a large volume of published articles on the treatment of metal polluted water [10,11], focused on principal interest in metal removal from the monometallic system and often neglected the influence of surfactants. The coexistence of surfactants and metal ions in the industrial effluent further makes this an emergent issue.…”

Section: Introductionmentioning

confidence: 99%

Mechanistic exploration of Ni (II) removal by immobilized bacterial biomass and interactive influence of coexisting surfactants

Naskar

Bera

2017

Env Prog and Sustain Energy

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Herein, the adsorption efficiency of biomass based on mutated bacterial strain (Bacillus cereus M 1 16 ) impregnated into calcium alginate towards Ni (II) ions was investigated in batch system. Biomass was characterized by sophisticated instrumental analyses. The influencing process parameters on Ni (II) removal from monometallic system were studied and optimal conditions were ascertained. The performance of such biosorbent on exposure to different metal ions was also evaluated. Especially, this work focused on principal interest in Ni (II) removal in presence of surfactants (Sodium dodecyl sulfate and Triton X-100), where Sodium dodecyl sulfate offered synergetic effect as a function of sorption yield. The best fitted pseudo-second order and film diffusion kinetic model in presence of surfactants provided more suitable prediction reflecting rate controlling steps of Ni (II) removal process. Additionally, experimental data adequately fitted by both Redlich-Peterson and Langmuir-Freundlich dual isotherm model. Thermodynamically the process was found to be spontaneous, endothermic and entropy-driven. Regeneration studies were conducted with a series of five sequential adsorption-desorption cycles. Moreover, biomass proved its worth for effective removal of Ni (II) from simulated inorganic wastewater. Thus, this green chemical approach may have immense potential to be explored in the actual system.

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“…As we all know, industrial processes such as mining, electroplating, electric device manufacturing, and battery manufacturing are all major sources of heavy metal pollution. [1][2][3] Cobalt, one of the heavy metals and an oligo element, is necessary for metabolic processes in humans to ensure good health as it is an important component of vitamin B 12 .…”

Section: Introductionmentioning

confidence: 99%

“…Among these methods, adsorption is of great importance for wastewater treatment due to its high efficiency, exibility in design and operation, renewability and favorable selectivity. [11][12][13][14] It should be pointed out that the type of adsorbent plays a critical role in the adsorption process.…”

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confidence: 99%

Fast removal of Co(ii) from aqueous solution using porous carboxymethyl chitosan beads and its adsorption mechanism

2018

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Porous carboxymethyl chitosan (PCMC) beads were synthesized via ionic coacervation/chemical crosslinking, using polyethylene glycol (PEG) as a porogen and calcium chloride and glutaraldehyde as physical and chemical cross-linkers. The as-synthesized PCMC beads were characterized using SEM, EDS, BET, TGA, FTIR and XPS analysis and then tested for the removal of Co(II) from aqueous solution. The effects of the initial pH, Co(II) concentration and temperature were investigated. It was found that the adsorption equilibrium is reached within 6 h and the maximum adsorption capacity is 46.25 mg g À1 .In addition, the kinetics and equilibrium data are well described by pseudo-second-order kinetics and the Langmuir isotherm model. Moreover, the desorption and re-adsorption performance was also studied, and the results revealed that the prepared new adsorbent still showed good adsorption performance after five cycles of regeneration. Finally, the adsorption mechanism, including chemical and physical adsorption, was proposed on the basis of the microstructure analysis, adsorption kinetics and isotherm results, and chemical adsorption was found to be the main adsorption mechanism during the process of the removal of Co(II).

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Efficient Pb(II) removal using sodium alginate–carboxymethyl cellulose gel beads: Preparation, characterization, and adsorption mechanism

Cited by 294 publications

References 46 publications

Preparation and Properties of Sodium Carboxymethyl Cellulose/Sodium Alginate/Chitosan Composite Film

Preparation and Properties of Sodium Carboxymethyl Cellulose/Sodium Alginate/Chitosan Composite Film

Mechanistic exploration of Ni (II) removal by immobilized bacterial biomass and interactive influence of coexisting surfactants

Fast removal of Co(ii) from aqueous solution using porous carboxymethyl chitosan beads and its adsorption mechanism

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