Biosorption of Lead (II) onto soda lignin gels extracted from Nypa fruiticans

Ogunsile, B. O.; Bamgboye, M.O.

doi:10.1016/j.jece.2017.05.016

Cited by 35 publications

(6 citation statements)

References 40 publications

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“…The roughness on the adsorbent surface was observed in each sample. A previous study reported that lignin had a roughness that was not aggregatory (Ogunsile and Bamgboye, 2017); similar trends were observed in the present study. Additionally, several small pores were observed in Lig600, Lig800, and Lig1000 under our experimental conditions.…”

Section: Effect Of Calcination On Physical Propertiessupporting

confidence: 92%

Assessment of Cd(II) adsorption capability and mechanism from aqueous phase using virgin and calcined lignin

Ogata

Nagahashi

Miki

et al. 2020

Heliyon

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Herein, to assess the adsorption capability and elucidate the adsorption mechanism of Cd(II) from the aqueous phase, virgin lignin (Lig) and calcined lignin (Lig200, Lig400, Lig600, Lig800, and Lig1000) were prepared. The characteristics, including specific surface area and pore volume of adsorbents, were investigated, and the adsorption capability along with the effect of temperature, contact time, and pH on the adsorption of Cd(II) were evaluated. The characteristics of the adsorbent surface were related to the adsorption capability of Cd(II) from the aqueous phase, and the correlation coefficients between the adsorbed amount and specific surface area and total pore volumes were 0.872 and 0.960, respectively. Moreover, the amount adsorbed using Lig800 (91.3 mg/g) was higher than that using other adsorbent samples. The adsorption mechanism was elucidated to investigate the binding energy and elemental distribution before and after Cd(II) adsorption. Finally, the desorption capability of Cd(II) from Lig800 using a hydrochloric acid solution was demonstrated. Results obtained herein suggest that Lig800 is a potential candidate for the removal of Cd(II).

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Section: Effect Of Calcination On Physical Propertiessupporting

confidence: 92%

Assessment of Cd(II) adsorption capability and mechanism from aqueous phase using virgin and calcined lignin

Ogata

Nagahashi

Miki

et al. 2020

Heliyon

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“…The FLA sample exhibited basic absorption peaks of lignin, indicating that the skeleton structure of lignin had been successfully formed. For example, (i) the -OH stretching vibrations of phenolic and aliphatic groups, as well as hydrogen-bonded stretching vibrations, are attributed to a broad band at 3433 cm − 1 , whereas the peaks observed at 2904 cm − 1 are attributed to the stretching vibration of C-H bands assigned to aromatic methoxy groups, methyl, and methylene groups of the side chain; 34 (ii) a stretching vibration band for -C = C-in the aromatic ring at 1661 cm − 1 ; 17 (vi) a peak at 1073 cm − 1 referring to the characteristic of C-O stretching of carbohydrate material. 31 These bands clearly show that the functionalized lignin generated is nearly pure and free of polysaccharide contamination (Fig.…”

Section: Removal Of Rg-19 Dye By Flamentioning

confidence: 99%

“…38 At a molecular level, it is reasonable to infer that the functional group -NH 2 or -NH-of RG-19 interacts with the O atom of FLA via hydrogen bond interaction. 34 The ionization of amine breaks the H-bonding because the amino groups of RG-19 are protonated at low pH and deprotonated at high pH. In contrast, when the pH approaches neutral, more of the -NH 2 and -NH-groups are released from protonation, resulting in the strongest hydrogen bond between the amino groups of RG19.…”

Section: Removal Of Rg-19 Dye By Flamentioning

confidence: 99%

Functionalized lignin-based-adsorbent derived from black liquor in the paper industry for superior adsorption characteristics.

Hamad

Elhafez

Sorour

et al. 2021

Preprint

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Lignin's availability in large amounts from industrial black liquor as waste from the paper industry is still a problem. On the other hand, its utilization potentials as a green low-cost adsorbent for the effective removal of toxic organic dye from industrial wastewater has become a topic of great interest but remains quite challenging. In this sense, this work aimed to evaluate the feasibility of removing the reactive green dye (RGD) onto the functionalized lignin-based adsorbent (FLA) by the acidic method. The kinetic study suggested the adsorption process confirmed to a pseudo-second-order-kinetic and intra-particle diffusion models. Also, the isotherm results showed that the FLA exhibited multi-layer adsorption. Meanwhile, the results of FTIR and SEM showed that the RG-19 adsorption mechanisms were electrostatic interaction, hydrogen bonding, π-π stacking, and physical adsorption. Thermodynamic parameters were also evaluated and their values indicated that adsorption of RG-19 onto FLA is an exothermic process and spontaneous in nature. As a renewable, low-cost, and natural biomass material, FLA has the potential to be used as a promising sustainable and economic application of biomass and will inspire more scholars to investigate solutions to the problem of contaminated water resources.

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“…Zhou et al reported a mercapto-functionalized alkali lignin for the adsorption of Hg (II) with the saturated adsorption amounts of 101.2 mg/g [ 102 ]. Ogunsile et al reported a maximum adsorption amount of 15.87 mg/g at 55 °C for Pb 2+ by a sulfonated resinified lignin [ 103 ]. Liu et al synthesized carboxymethyl lignin nanospheres by a two-step method using microwave irradiation and antisolvent for heavy metal ion adsorption, and the maximum adsorption capacity for Pb 2+ was found to be 333.3 mg/g, which is significantly higher than other lignin-based adsorbents [ 104 ].…”

Section: Lignin and Its Derivatives For Heavy Metal Adsorbentmentioning

confidence: 99%

Recent Advances in the Application of Functionalized Lignin in Value-Added Polymeric Materials

Wang

Meng

et al. 2020

Polymers

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The quest for converting lignin into high-value products has been continuously pursued in the past few decades. In its native form, lignin is a group of heterogeneous polymers comprised of phenylpropanoids. The major commercial lignin streams, including Kraft lignin, lignosulfonates, soda lignin and organosolv lignin, are produced from industrial processes including the paper and pulping industry and emerging lignocellulosic biorefineries. Although lignin has been viewed as a low-cost and renewable feedstock to replace petroleum-based materials, its utilization in polymeric materials has been suppressed due to the low reactivity and inherent physicochemical properties of lignin. Hence, various lignin modification strategies have been developed to overcome these problems. Herein, we review recent progress made in the utilization of functionalized lignins in commodity polymers including thermoset resins, blends/composites, grafted functionalized copolymers and carbon fiber precursors. In the synthesis of thermoset resins such as polyurethane, phenol-formaldehyde and epoxy, they are covalently incorporated into the polymer matrix, and the discussion is focused on chemical modifications improving the reactivity of technical lignins. In blends/composites, functionalization of technical lignins is based upon tuning the intermolecular forces between polymer components. In addition, grafted functional polymers have expanded the utilization of lignin-based copolymers to biomedical materials and value-added additives. Different modification approaches have also been applied to facilitate the application of lignin as carbon fiber precursors, heavy metal adsorbents and nanoparticles. These emerging fields will create new opportunities in cost-effectively integrating the lignin valorization into lignocellulosic biorefineries.

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Biosorption of Lead (II) onto soda lignin gels extracted from Nypa fruiticans

Cited by 35 publications

References 40 publications

Assessment of Cd(II) adsorption capability and mechanism from aqueous phase using virgin and calcined lignin

Assessment of Cd(II) adsorption capability and mechanism from aqueous phase using virgin and calcined lignin

Functionalized lignin-based-adsorbent derived from black liquor in the paper industry for superior adsorption characteristics.

Recent Advances in the Application of Functionalized Lignin in Value-Added Polymeric Materials

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