Low-cost structured alginate-immobilized bentonite beads designed for an effective removal of persistent antibiotics from aqueous solution

Yuliana, Maria; Ismadji, Suryadi; Lie, Jenni; Santoso, Shella Permatasari; Soetaredjo, Felycia Edi; Waworuntu, Gladdy L.; Putro, Jindrayani Nyoo; Wijaya, Christian

doi:10.1016/j.envres.2021.112162

Cited by 14 publications

(10 citation statements)

References 33 publications

(17 reference statements)

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“…The type of adsorption isotherms in N 2 is an important index to evaluate the performance of the adsorbent. The adsorption isotherm curves of the three modified biochars displayed in Figure 2 a, which can be categorized as Type IV isotherms with H3-type hysteresis loops according to the IUPAC classification, 39 indicate that the adsorption of the biochars is mesopore adsorbent and has capillary condensation of multilayer adsorption. According to the pore size distribution curves ( Figure 2 b), the pore sizes of the four biochars were concentrated between 2 and 4 nm, confirming that the pores in the samples were mainly mesopores.…”

Section: Resultsmentioning

confidence: 99%

Efficient Adsorption of a Sulfonamide Antibiotic in Aqueous Solutions with N-doped Magnetic Biochar: Performance, Mechanism, and Reusability

Diao

Shan

et al. 2022

ACS Omega

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Conventional biochar has limited effectiveness in the adsorption of sulfonamide antibiotics, while modified biochar exhibits greater adsorption potential. Residues of sulfamethoxazole (SMX) in the aquatic environment can threaten the safety of microbial populations as well as humans. In this study, iron–nitrogen co-doped modified biochar (Fe-N-BC) was prepared from palm fibers and doped with Fe and urea via synthesis at 500 °C. Fe-N-BC has a richer surface functional group based on elemental content, X-ray photoelectron spectroscopy, X-ray diffraction, and Fourier transform infrared spectroscopy. The Brunauer–Emmett–Teller (BET) specific surface area test exhibited Fe-N-BC, which possessed a greater surface area (318.203 m2/g) and a better developed pore structure (0.149 cm3/g). The results of the hysteresis loop and the Raman spectrum show that Fe-N-BC has a higher degree of magnetization and graphitization. Fe-N-BC showed a remarkable adsorption capacity for SMX (42.9 mg/g), which could maintain 93.4% adsorption effect after four cycles, and 82.8% adsorption capacity in simulated piggery wastewater. The adsorption mechanism involves pore filling, surface complexation, electrostatic interactions, hydrogen bonding, and π–π EDA interactions. The results of this study show that Fe-N-BC prepared from palm fibers can be a stable, excellent adsorbent for SMX removal from wastewater and has promise in terms of practical applications.

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Section: Resultsmentioning

confidence: 99%

Efficient Adsorption of a Sulfonamide Antibiotic in Aqueous Solutions with N-doped Magnetic Biochar: Performance, Mechanism, and Reusability

Diao

Shan

et al. 2022

ACS Omega

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“…Moreover, the main diffraction peaks of B‐CoNi‐BDC were located at 14.2°, 15.8°, 17.6°, 25.2°, 28.1° and 30.9°, which were similar to N‐CoNi‐BDC, whereas N‐CoNi‐BDC exhibited some broad and displaced peaks, indicating that the ultrasonic process during synthesis can alter the crystallinity and morphology. Figure 1c and 1d show that both B‐CoNi‐BDC and N‐CoNi‐BDC had type III N 2 adsorption isotherms with H4‐type hysteresis loops, indicating the presence of slit‐ or plane‐shaped pores [33] . The surface extension caused by the ultrasonic process is evidenced by the difference between the Brunauer‐Emmett‐Teller BET specific surface area of B‐CoNi‐BDC (14.17 m 2 g −1 ) and sonicated sample (21.70 m 2 g −1 ).…”

Section: Resultsmentioning

confidence: 99%

“…Figure 1c and 1d show that both B-CoNi-BDC and N-CoNi-BDC had type III N 2 adsorption isotherms with H4type hysteresis loops, indicating the presence of slit-or planeshaped pores. [33] The surface extension caused by the ultrasonic process is evidenced by the difference between the Brunauer-Emmett-Teller BET specific surface area of B-CoNi-BDC (14.17 m 2 g À 1 ) and sonicated sample (21.70 m 2 g À 1 ). The pore size distributions are also exhibited in Figure S2.…”

Section: Materials Characterizationmentioning

confidence: 99%

Facile Fabrication of Ultrathin Bimetal‐Organic Nanosheets as High‐Performance Anode of Lithium‐Ion Batteries

et al. 2023

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Two‐dimensional metal‐organic frameworks (2D MOFs) with more exposed active sites and stable structures are auspicious electrode materials for high‐performance lithium‐ion batteries (LIBs). In the current work, ultrasonic treatment was used to prepare two‐dimensional CoNi‐BDC ultrathin nanosheets (N‐CoNi‐BDC) by coordinating Ni2+, Co2+, and benzenedicarboxylic acid (BDC). The N‐CoNi‐BDC was used as the anode of LIBs, demonstrating an exceptional reversible storage capacity of 1358 mAh g−1 after 200 cycles at 0.1 A g−1. In addition, a charging capacity of 757 mAh g−1 was observed at a high current density of 1 A g−1 without observable capacity degradation up to 300 cycles. The superior behavior of N‐CoNi‐BDC was attributed to its distinct morphology of ultrathin nanosheets with more exposed active sites and stable structures. Ex‐situ FTIR and XPS results revealed that the benzene ring, carboxylate, and Ni2+ in N‐CoNi‐BDC were the active parts of lithium‐ion storage.

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“…Furthermore, the hydrogel was stirred until it became homogeneous and was dropped into an 8 g (4% w/v) CaCl 2 solution using a sterile syringe. Afterward, formed beads were sunk into fresh CaCl 2 solution for crosslink until 24 h. The beads were washed with demineralized water three times to eliminate excess CaCl 2 [27].…”

Section: Matrix Beads Preparation and Immobilization Processmentioning

confidence: 99%

Biodecolorization of Methylene Blue by Using <i>Bacillus subtilis</i> Immobilized into SA-PVA-Bentonite Matrix in Mineral Salt Medium and Non-nutritious Medium

Rohmah

Purnomo²,

Safitri³

2022

Indones. J. Chem.

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Industrial dye wastewater can potentially cause significant harm to organisms and the environment across the world. Methylene blue (MB) is a synthetic dye that can be found in wastewater. Immobilizing clay material and degradative bacteria into a carrier is the best way to remove MB. Therefore, this study aimed to immobilize Bacillus subtilis in sodium alginate (SA)-polyvinyl alcohol (PVA)-Bentonite for adsorption and degrading MB in nutritious mineral salt medium (MSM) and non-nutritious media. The result showed that SA-PVA-Bentonite-non-living B. subtilis beads (SPB-nBS) had the highest result in non-nutritious medium, approximately 88.89%. While in nutritious MSM, living B. subtilis addition into beads (SPB-BS) reached the highest MB removal, which was 94.31%. Nutritious MSM had a role as the sole carbon and energy for living B. subtilis. So, it could adsorb and degrade MB by its enzymatic system. The degradation products were predicted as C7H10N2O4S, C8H10N2O2 and C6H8N2O3S. Hence, this study indicated that a nutritious medium was the suitable medium for MB degradation. According to the SEM result, the bacteria spread and covered the beads. Furthermore, the adsorption kinetics and isotherms were also analyzed; SPB beads followed the pseudo-second order kinetic model and Langmuir isotherm.

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Low-cost structured alginate-immobilized bentonite beads designed for an effective removal of persistent antibiotics from aqueous solution

Cited by 14 publications

References 33 publications

Efficient Adsorption of a Sulfonamide Antibiotic in Aqueous Solutions with N-doped Magnetic Biochar: Performance, Mechanism, and Reusability

Efficient Adsorption of a Sulfonamide Antibiotic in Aqueous Solutions with N-doped Magnetic Biochar: Performance, Mechanism, and Reusability

Facile Fabrication of Ultrathin Bimetal‐Organic Nanosheets as High‐Performance Anode of Lithium‐Ion Batteries

Biodecolorization of Methylene Blue by Using <i>Bacillus subtilis</i> Immobilized into SA-PVA-Bentonite Matrix in Mineral Salt Medium and Non-nutritious Medium

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