Preparation of peanut shell-like calcium carbonate from biowaste chicken eggshell and its application for aqueous Victoria Blue B removal

Zhai, Haoying; Liu, Fuming; Huang, Yili; Qin, Ying-zhi; Tian, Chencheng; Zhou, Wenjun

doi:10.1016/j.micromeso.2021.111549

Cited by 17 publications

(3 citation statements)

References 67 publications

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“…The initial MB concentrations of CN and MCS3-1 were 550 mg/L and 1570 mg/L and the removal rates were 94% and 91%, respectively. The amount of MB adsorbed increased with the increase in adsorption time [52]. The rate of adsorption of MB was fairly rapid at the initial stage in the first 30 min.…”

Section: Effect Of Initial Mb Concentration and Contact Timementioning

confidence: 91%

Chestnut Shell-Activated Carbon Mixed with Pyrolytic Snail Shells for Methylene Blue Adsorption

Nhung

Ding

et al. 2022

Materials

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Activated carbon has been used to treat organic dyes in water systems; however, the adsorption capacity of the samples studied was limited by the specific surface area and influenced by the pH of the aqueous solution. In this study, a hybrid adsorbent consisting of a mixture (MCS) of activated chestnut shell biochar (CN) and pyrolyzed snail shell material (SS) was developed to solve this problem, with the waste snail shell samples being processed by pyrolysis and the chestnut shell samples chemically pretreated and then pyrolyzed. The BET and SEM results revealed that the SS had a mesoporous fluffy structure with a higher specific surface (1705 m2/g) and an average pore diameter of about 4.07 nm, providing a large number of sites for adsorption. In addition, XPS and FTIR results showed that the main component of SS was calcium oxide, and it also contained a certain amount of calcium carbonate, which not only provided an alkaline environment for the adsorption of biochar but also degradation and photocatalytic capabilities. The results showed that the MCS3-1 sample, obtained when CN and SS were mixed in the ratio of 3:1, had good capacity for adsorption for methylene blue (MB), with 1145 mg/g at an initial concentration of 1300 mg/L (92% removal rate). The adsorption behaviors were fitted with the pseudo-second-order kinetic model and Freundlich isotherm model, which indicated that the adsorption was multilayer chemisorption with a saturated adsorption capacity of 1635 mg/g. The photocatalytic capacity from the SS composition was about 89 mg/g, and the sorption of MB dye onto the sorbent reached equilibrium after 300 min. The results suggested that MCS3-1 has enormous potential for removing MB from wastewater.

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Section: Effect Of Initial Mb Concentration and Contact Timementioning

confidence: 91%

Chestnut Shell-Activated Carbon Mixed with Pyrolytic Snail Shells for Methylene Blue Adsorption

Nhung

Ding

et al. 2022

Materials

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“…According to relevant literatures, [40][41][42][43] these significantly performance may be attributed to the following items. First, SDS worked as a soft template and induced the formation of porous CaCO 3 .…”

Section: Resultsmentioning

confidence: 99%

The Enhanced Photo‐Catalytic Properties of ZnO Under the Synergistic Effect of CaCO₃

Yao,

Chen,

Yuan

et al. 2023

Cryst. Res. Technol.

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At present, the problem of environmental pollution is becoming increasingly serious. It is urgent to develop efficient catalysts to solve these problems. To obtain the functional characteristics of CaCO3 and promote its application in coatings and photo‐catalysis, ZnO/CaCO3 particles are prepared by the solution co‐precipitation method under the mediate of sodium dodecyl sulfate (SDS) through corresponding strategies. The structures and morphologies of samples are characterized by XRD, FT‐IR, SEM, and TEM, respectively. Besides that, the photo‐catalytic property of the desired product is also evaluated. The results indicate that SDS helps to induce the formation of porous structure. Through co‐precipitation, ZnO particles uniformly load on porous calcium carbonate. ZnO/CaCO3 particles are endowed with low‐cost property and high catalytic performance under the synergistic effect of photo‐catalytic properties and absorption abilities. This work established a simple way to produce the composite catalysts with low price and high photo‐catalytic activity.

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“…Porous calcium carbonate possesses a rich pore structure and large specific surface area [ 29 , 30 , 31 , 32 ], which enhance the interaction with the superabsorbent polymer network and improve the crosslinking network structure of the superabsorbent polymer as an inorganic crosslinking component [ 33 ]. The microparticles have better dispersion than nanocalcium carbonate.…”

Section: Introductionmentioning

confidence: 99%

Enhanced Water Absorbency and Water Retention Rate for Superabsorbent Polymer via Porous Calcium Carbonate Crosslinking

Jiao,

Su,

Chen

et al. 2023

Nanomaterials

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To improve the water absorbency and water-retention rate of superabsorbent materials, a porous calcium carbonate composite superabsorbent polymer (PCC/PAA) was prepared by copolymerization of acrylic acid and porous calcium carbonate prepared from ground calcium carbonate. The results showed that the binding energies of C–O and C=O in the O 1s profile of PCC/PAA had 0.2 eV and 0.1–0.7 eV redshifts, respectively, and the bonding of –COO− groups on the surface of the porous calcium carbonate led to an increase in the binding energy of O 1s. Furthermore, the porous calcium carbonate chelates with the –COO− group in acrylic acid through the surface Ca2+ site to form multidirectional crosslinking points, which would increase the flexibility of the crosslinking network and promote the formation of pores inside the PCC/PAA to improve the water storage space. The water absorbency of PCC/PAA with 2 wt% porous calcium carbonate in deionized water and 0.9 wt% NaCl water solution increased from 540 g/g and 60 g/g to 935 g/g and 80 g/g, respectively. In addition, since the chemical crosslinker N,N′-methylene bisacrylamide is used in the polymerization process of PCC/PAA, N,N′-methylene bisacrylamide and porous calcium carbonate enhance the stability of the PCC/PAA crosslinking network by double-crosslinking with a polyacrylic acid chain, resulting in the crosslinking network of PCC/PAA not being destroyed after water absorption saturation. Therefore, PCC/PAA with 2 wt% porous calcium carbonate improved the water-retention rate by 244% after 5 h at 60 °C, and the compressive strength was approximately five-times that of the superabsorbent without porous calcium carbonate.

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Preparation of peanut shell-like calcium carbonate from biowaste chicken eggshell and its application for aqueous Victoria Blue B removal

Cited by 17 publications

References 67 publications

Chestnut Shell-Activated Carbon Mixed with Pyrolytic Snail Shells for Methylene Blue Adsorption

Chestnut Shell-Activated Carbon Mixed with Pyrolytic Snail Shells for Methylene Blue Adsorption

The Enhanced Photo‐Catalytic Properties of ZnO Under the Synergistic Effect of CaCO₃

Enhanced Water Absorbency and Water Retention Rate for Superabsorbent Polymer via Porous Calcium Carbonate Crosslinking

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Preparation of peanut shell-like calcium carbonate from biowaste chicken eggshell and its application for aqueous Victoria Blue B removal

Cited by 17 publications

References 67 publications

Chestnut Shell-Activated Carbon Mixed with Pyrolytic Snail Shells for Methylene Blue Adsorption

Chestnut Shell-Activated Carbon Mixed with Pyrolytic Snail Shells for Methylene Blue Adsorption

The Enhanced Photo‐Catalytic Properties of ZnO Under the Synergistic Effect of CaCO3

Enhanced Water Absorbency and Water Retention Rate for Superabsorbent Polymer via Porous Calcium Carbonate Crosslinking

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The Enhanced Photo‐Catalytic Properties of ZnO Under the Synergistic Effect of CaCO₃