Macro algae Gracilaria verrucosa as a biosorbent: A study of sorption mechanisms

Ata, Ayca; Nalcaci, O.O.; Övez, B.

doi:10.1016/j.algal.2012.07.001

Cited by 78 publications

(38 citation statements)

References 91 publications

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“…8. The sorption capacity of MP DVB significantly decreased with increasing coexisting ions; the visible negative effect of coexisting Na + and Ca 2+ is indicative of the competition between the heavy metal, Cu 2+ , and alkaline/earth metal for the available binding sites of MP DVB (Ata et al 2012, Bozic et al 2009). This may indicate that the interaction between binding sites of MP DVB and the heavy metal cation is mainly ionic in nature (Bozic et al 2009).…”

Section: Effect Of Background Electrolytesmentioning

confidence: 95%

Removal of bisphenol A and some heavy metal ions by polydivinylbenzene magnetic latex particles

Marzougui

Chaabouni

Elleuch

et al. 2015

Environ Sci Pollut Res

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In this study, magnetic polydivinylbenzene latex particles MPDVB with a core-shell structure were tested for the removal of bisphenol A (BPA), copper Cu(II), lead Pb(II), and zinc Zn(II) from aqueous solutions by a batch-adsorption technique. The effect of different parameters, such as initial concentration of pollutant, contact time, adsorbent dose, and initial pH solution on the adsorption of the different adsorbates considered was investigated. The adsorption of BPA, Cu(II), Pb(II), and Zn(II) was found to be fast, and the equilibrium was achieved within 30 min. The pH 5-5.5 was found to be the most suitable pH for metal removal. The presence of electrolytes and their increasing concentration reduced the metal adsorption capacity of the adsorbent. Whereas, the optimal pH for BPA adsorption was found 7, both hydrogen bonds and π-π interaction were thought responsible for the adsorption of BPA on MPDVB. The adsorption kinetics of BPA, Cu(II), Pb(II), and Zn(II) were found to follow a pseudo-second-order kinetic model. Equilibrium data for BPA, Cu(II), Pb(II), and Zn(II) adsorption were fitted well by the Langmuir isotherm model. Furthermore, the desorption and regeneration studies have proven that MPDVB can be employed repeatedly without impacting its adsorption capacity.

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Section: Effect Of Background Electrolytesmentioning

confidence: 95%

Removal of bisphenol A and some heavy metal ions by polydivinylbenzene magnetic latex particles

Marzougui

Chaabouni

Elleuch

et al. 2015

Environ Sci Pollut Res

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“…Among them, adsorption has superior advantages over other methods for removing pollutants at low concentration with respect to environmental friendliness, economy and high efficiency (Chen et al, 2011;Xi and Chen, 2014;Yakout and Daifullah, 2013). Nevertheless, the expensive manufacturing cost makes conventional adsorbents such as activated carbon less economically feasible for extensive use in water treatment (Ata et al, 2012). The use of non-conventional, low-cost biosorbents prepared from agricultural wastes and byproducts can not only reduce a large quantity of solid waste but also be very attractive.…”

Section: Introductionmentioning

confidence: 98%

Typical low cost biosorbents for adsorptive removal of specific organic pollutants from water

Tran

Ngo

Guo

et al. 2015

Bioresource Technology

278

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Specific organic pollutants (SOPs) such as phenolic compounds, PAHs, organic pesticides, and organic herbicides cause health and environmental problems due to their excessive toxic properties and poor biodegradability. Low-cost biosorbents are considered as a promising alternative for conventional adsorbents to remove SOPs from water. These materials have several advantages such as high sorption capacities, good modifiability and recoverability, insensitivity to toxic substances, simple operation in the treatment processes. However, previous reports on various types of biosorbents for removing SOPs are still moderately fragmented. Hence, this paper provides a comprehensive review on using typical low-cost biosorbents obtained from lignocellulose and chitin/chitosan for SOPs adsorption. Especially, their characteristics, biosorption mechanism together with utilization for eliminating SOPs are presented and discussed. The paper also gives a critical view regarding future applications of low-cost biosorbents in SOPs-contaminated water treatment.2

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“…Biosorption systems exhibit not only high efficiency but also economic benefits. It was reported that biosorption could reduce the total cost by approximately 28% compared with conventional systems [19,20]. In previous studies, these biomaterials have shown remarkable performance in the biosorption and removal of heavy metals [21][22][23][24][25], dyes [26][27][28], and pesticides [29,30] due to their high carbon contents, aliphatic and aromatic components, and numerous chemical groups.…”

Section: Introductionmentioning

confidence: 99%

“…In previous studies, these biomaterials have shown remarkable performance in the biosorption and removal of heavy metals [21][22][23][24][25], dyes [26][27][28], and pesticides [29,30] due to their high carbon contents, aliphatic and aromatic components, and numerous chemical groups. Many studies have revealed that microbial biomass can passively bind to metal ions, dyes, and some organic antibiotic compounds via various physicochemical mechanisms [19,26,28,31]. These mechanisms include the following: (1) electrostatic attraction [32]; (2) hydrophobic interactions [2,33]; and (3) molecular specific forces, such as n-π interactions [34].…”

Section: Introductionmentioning

confidence: 99%

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Application of Klebsiella oxytoca Biomass in the Biosorptive Treatment of PAH-Bearing Wastewater: Effect of PAH Hydrophobicity and Implications for Prediction

Zhang

Zhao

et al. 2018

Water

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Biosorption has been widely recognized as a promising method to treat wastewater. However, few studies have investigated the impact of pollutants' properties on wastewater treatment, as well as the underlying mechanisms and future predictions. In this study, the effects of pollutants' hydrophobicity on the biosorptive removal of polycyclic aromatic hydrocarbons (PAHs) were evaluated. The results showed that the inactive biomass of Klebsiella oxytoca effectively removes PAHs from aqueous solutions with a high biosorption capacity, high biosorption affinity, and short equilibrium time. The biosorption of seven PAHs achieved equilibrium rapidly (less than 2 h) and fitted well to the pseudo-second-order kinetic model. Sorption occurred with a predominantly linear partition process to the biomaterial with K d values of 363.11, 1719.5, 2515.5, 7343.3, 6353.4, 22,806, and 19,541 L·kg −1 for naphthalene, acenaphthene, fluorene, phenanthrene, anthracene, pyrene, and fluoranthene, respectively. An increase in temperature led to a decrease in the biosorption affinity, and the bacterial biosorption of PAHs was spontaneous and exothermic. Furthermore, a positive correlation was observed between the sorption affinity and the octanol partition coefficient (K ow ) (logK d = 1.011logK ow − 0.7369), indicating that hydrophobicity is the main factor influencing the biosorption efficiency. These results suggest that biosorption is an efficient and predictable treatment for micropollutant-bearing wastewater.

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Macro algae Gracilaria verrucosa as a biosorbent: A study of sorption mechanisms

Cited by 78 publications

References 91 publications

Removal of bisphenol A and some heavy metal ions by polydivinylbenzene magnetic latex particles

Removal of bisphenol A and some heavy metal ions by polydivinylbenzene magnetic latex particles

Typical low cost biosorbents for adsorptive removal of specific organic pollutants from water

Application of Klebsiella oxytoca Biomass in the Biosorptive Treatment of PAH-Bearing Wastewater: Effect of PAH Hydrophobicity and Implications for Prediction

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