Morphology-controlled synthesis of calcium titanate particles and adsorption kinetics, isotherms, and thermodynamics of Cd(II), Pb(II), and Cu(II) cations

Hang, Ying; Si, Yang; Zhou, Qin; Yin, Hengbo; Wang, Aili; Cao, Amei

doi:10.1016/j.jhazmat.2019.120789

Cited by 42 publications

(8 citation statements)

References 45 publications

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“…Chemical adsorption is generally involving electronic sharing or electronic transfer (Hang et al, 2019). In order to study the mechanism of adsorption of DBP by strain DM12, the thermodynamics and kinetics of the adsorption process need to be investigated.…”

Section: Discussionmentioning

confidence: 99%

“…Physical adsorption is mainly achieved by intermolecular forces, no chemical bonds are formed and destroyed, electrons are not transferred, and atoms are not rearranged. Chemical adsorption is generally involving electronic sharing or electronic transfer (Hang et al., 2019). In order to study the mechanism of adsorption of DBP by strain DM12, the thermodynamics and kinetics of the adsorption process need to be investigated.…”

Section: Discussionmentioning

confidence: 99%

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Adsorption kinetics and mechanism of di‐n‐butyl phthalate by Leuconostoc mesenteroides

Zhao

Yang

et al. 2020

Food Science & Nutrition

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Phthalates (PAEs) are a group of diesters of ortho-phthalic acid, that is, dialkyl or alkyl aryl esters of 1, 2-benzenedicarboxylic acid. PAEs have been monitored in many foods, food-packaging materials, medical devices, cosmetics, and childcare equipment (Cao, 2010; Hernández-Díaz et al., 2009; Silva et al., 2017). Exposure to PAEs occurs through water, food, air, soil, and dust by intake of chemicals via ingestion, inhalation, or adsorption through the skin (Fang et al., 2016). PAEs, as endocrine-disrupting chemicals, can interfere with the action of human hormones (Nassouri et al., 2012). Din -butyl phthalate (DBP) is one type of PAEs, and it has been widely used as a solvent to retain color and scent in various consumer and personal care products, and in epoxy resins, cellulose esters, and special adhesive formulations (He et al., 2015). DBP is teratogenic in animals (Giribabu & Reddy, 2017; Silva et al., 2004). Bornehag et al. (2004) and Colón et al. (2000) demonstrated a relation between premature breast development, asthma, and allergic symptoms and DBP in children. Due to its toxicity, the European Food Safety Authority (EFSA) has specified the tolerable daily intake of DBP as 0.01 mg/kg body weight/day and China permits the maximum residue of DBP as 0.3 mg/kg in food and food additives. Therefore, DBP is a contaminant of major concern in the food industry, and there is an urgent need to establish an efficient method for its removal. However, biological removal of DBP in food, human, or other environments and its related mechanisms have not been reported. Lactic acid bacteria (LABs) are a group of bacteria that can ferment lactose to lactate. Some strains of LABs have potential to reduce the risk of carcinogenic compounds and play a role in promoting health for humans (Clements & Carding, 2018; Sanders et al., 2014; Gibson et al., 2010). Some strains of LABs can lower genotoxicity and carcinogenic toxicity of heterocyclic aromatic amines via various components which can bind and remove these amines (Schwab et al., 2000). For example, Enterococcus faecium M74 and EF031 can bind aflatoxin B 1 (AFB 1) and patulin (Topcu et al., 2010). Zhu et al. (2017) reported that bisphenol A can be removed from

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Adsorption kinetics and mechanism of di‐n‐butyl phthalate by Leuconostoc mesenteroides

Zhao

Yang

et al. 2020

Food Science & Nutrition

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“…The adsorption of Cu(II) on CaTiO 3 powders was well illustrated by the pseudo-second-order adsorption kinetics and it will be fitted by Langmuir adsorption isotherm. The adsorption process was spontaneous and endothermic and the maximum adsorption capacity was 66.4 mg g -1 [11]. The adsorption of Cu(II) on titanate nanocomposite was well fitted by the pseudosecond-order adsorption kinetic and Langmuir adsorption models and the maximum adsorption capacity was 13.8 mg g −1 .…”

Section: Introductionmentioning

confidence: 87%

Kinetics and thermodynamics of aqueous copper adsorption by Ca-Al-Zn LDH and its calcined product

et al. 2020

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T he Ca-Al-Zn layered double hydroxide (LDh) which synthesized by the co-precipitation method and its calcined product was used in the removal of Cu(II) from aqueous solutions. At optimum conditions, the calcined Ca-Al-Zn LDh product has a higher potential application in the cupreous ion's adsorption field (45.2mg/g) than the uncalcined LDH (38.8mg/g). Langmuir and Freundlich models were used to optimizing the adsorption process and pseudo-first and pseudo-second-order models were used to evaluating the adsorption kinetics of Cu(II) onto Ca-Al-Zn LDH and its calcined product. Langmuir model fitted the experimental data better than Freundlich model and the pseudo-first-order model is more sufficient to depict the adsorption kinetics. From thermodynamic studies; Gibbs free energy (∆G°), Enthalpy change (∆H°), and Entropy change (∆S°) revealed that the adsorption processes are spontaneous, endothermic, and randomness processes at the solid-solution interface during adsorption.

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“…The stirring speed used in adsorption experiments can have a key role in the results obtained within a given adsorption system, though experimentation on this variable is often neglected by researchers. [32][33][34] The results obtained from the set of experiments are summarized in Figure 2. The percentage of Mn(VII) adsorption onto the adsorbent increased with the stirring speed from 110 to 500 minutes −1 , with a further decrease at higher stirring speeds.…”

Section: Influence Of the Stirring Speedmentioning

confidence: 99%

Microporous adsorbent from winemaking waste for the recovery of Mn(VII) in liquid solutions

Alcaraz

López

2020

Can J Chem Eng

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Microporous activated carbon (MAC) was synthesized from winemaking waste and was used to adsorb Mn(VII) from aqueous solutions under various experimental conditions. Moreover, Mn(VII) adsorption on MAC was compared to other adsorbents and an ion-exchange resin, as well as those of other anionic complexes. Langmuir type-1 isotherm best fitted the adsorption process, whereas for all the studied temperatures (30 C-60 C), the experimental data fitted well with the pseudo-second-order kinetic model. The calculated activation energy was 8.1 kJ Á mol −1 , suggesting that Mn(VII) adsorption onto the MAC was a physical adsorption driven process. A reduction of Mn(VII) to Mn(II) occurs at a pH of 1 with the precipitation of MnO 2. Mn(VII) recovery from loaded-activated carbon using acidic conditions and different variables was investigated.

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Morphology-controlled synthesis of calcium titanate particles and adsorption kinetics, isotherms, and thermodynamics of Cd(II), Pb(II), and Cu(II) cations

Cited by 42 publications

References 45 publications

Adsorption kinetics and mechanism of di‐n‐butyl phthalate by Leuconostoc mesenteroides

Adsorption kinetics and mechanism of di‐n‐butyl phthalate by Leuconostoc mesenteroides

Kinetics and thermodynamics of aqueous copper adsorption by Ca-Al-Zn LDH and its calcined product

Microporous adsorbent from winemaking waste for the recovery of Mn(VII) in liquid solutions

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