Engineered biochar composites with zeolite, silica, and nano-zerovalent iron for the efficient scavenging of chlortetracycline from aqueous solutions

Ahmad, Munir; Usman, Adel R.A.; Rafique, Muhammad Imran; Al-Wabel, Mohammad I.

doi:10.1007/s11356-019-04850-7

Cited by 84 publications

(22 citation statements)

References 58 publications

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“…Pyrolysis of waste biomass resulted in an increment of 5.0 units in the pH of the biochar, which could be due to condensation of alkali-based functional groups, loss of acidic functional groups, and alkali salt separation 28 . However, reduction in pH in engineered biochar types could be due to washings of materials resulting in a subsequent loss of soluble basic cations 29 . The yield of DBC was found to be 31.78%.…”

Section: Resultsmentioning

confidence: 99%

Turning date palm waste into carbon nanodots and nano zerovalent iron composites for excellent removal of methylthioninium chloride from water

Ahmad

Akanji

Usman

et al. 2020

Sci Rep

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Novel carbon nanodots (nCD-DBC) and nano zero-valent iron composites (nZVI-DBC) were synthesized using date palm waste-derived biochar (DBC). The synthesized materials were analyzed for chemical and structural composition by using FTIR, SEM, XRD, and TGA, and evaluated for their methylthioninium chloride dye (MB) removal efficiency from contaminated aqueous solutions. pH 7.0 was found optimum for the highest MB removal in sorption batch studies. Kinetics sorption of MB onto the sorbents was best described by pseudo-second-order (R2 = 0.93–0.99) and Elovich models (R2 = 0.86–0.97) implying that sorption was being controlled by chemisorption. Langmuir model predicted maximum sorption capacities for nCD-DBC, nZVI-DBC, and DBC were 1558.66, 1182.90, and 851.67 mg g−1, respectively, which correlated with the results of kinetics sorption. Likewise, nCD-DBC yielded the highest partition coefficient (7067 mL g−1), followed by nZVI-DBC (1460 mL g−1), and DBC (930 mL g−1). Post-sorption XRD, FTIR, and SEM analyses depicted the binding of MB onto the sorbents. It was suggested that electrostatic interactions, π–π electron donor-accepter interactions, degradation, and diffusion were responsible for MB removal by the synthesized materials. Therefore, the nCD-DBC, nZVI-DBC, and DBC can potentially be used for scavenging MB dye from contaminated aqueous solutions.

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Section: Resultsmentioning

confidence: 99%

Turning date palm waste into carbon nanodots and nano zerovalent iron composites for excellent removal of methylthioninium chloride from water

Ahmad

Akanji

Usman

et al. 2020

Sci Rep

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“…The bands appearing around 862.5 and 1395 cm −1 were attributed to the stretching of C–O, while bands around 748.5 cm −1 were designated as Si–O [ 28 ]. A band with higher intensity in FS around 1152.3 cm −1 was attributed to C–O–C stretching of polysaccharide cellulose, which disappeared in BC [ 15 ]. Similar results were also observed in XRD patterns, where FS exhibited relatively higher contents of cellulose and hemicellulose, which disappeared in BC with thermalization.…”

Section: Resultsmentioning

confidence: 99%

“…Hence, SMZ antibiotics have been deemed a potential organic pollutant globally, and, therefore, it is very important to develop remediation strategies to mitigate SMZ toxicity in aquatic and terrestrial ecosystems. A number of versatile remediation process and techniques have been employed to restrict antibiotics release into soil and water resources such as biological and chemical treatments, electrokinetic remediation, advanced oxidation methods, membrane separation, activated carbon, organic filters, and adsorption [ 15 ]. However, the majority of these techniques are either expensive or inefficient.…”

Section: Introductionmentioning

confidence: 99%

“…Biochar (BC), which is a byproduct of controlled combustion of organic waste [ 16 ] has gained attention as a promising adsorbent to remove organic and inorganic pollutants from soil and waste water resources [ 15 , 17 ]. Employing BC as soil amendment for removing pollutants has been considered more effective and auspicious approach in comparison with other conventional techniques.…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, there is a dire need to develop cost-effective, greener, and eco-friendly approaches to decrease the translocation of SMZ residues in soil, into nearby and underground water resources. Biochar (BC), which is a byproduct of controlled combustion of organic waste [16] has gained attention as a promising adsorbent to remove organic and inorganic pollutants from soil and waste water resources [15,17]. Employing BC as soil amendment for removing pollutants has been considered more effective and auspicious approach in comparison with other conventional techniques.…”

Section: Introductionmentioning

confidence: 99%

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Sulfamethoxazole Leaching from Manure-Amended Sandy Loam Soil as Affected by the Application of Jujube Wood Waste-Derived Biochar

et al. 2021

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Vertical translocation/leaching of sulfamethoxazole (SMZ) through manure-amended sandy loam soil and significance of biochar application on SMZ retention were investigated in this study. Soil was filled in columns and amended with manure spiked with 13.75 mg kg−1 (S1), 27.5 mg kg−1 (S2), and 55 mg kg−1 (S3) of SMZ. Jujube (Ziziphus jujube L.) wood waste was transformed into biochar and mixed with S3 at 0.5% (S3-B1), 1.0% (S3-B2), and 2.0% (S3-B3) ratio. Cumulative SMZ leaching was lowest at pH 3.0, which increased by 16% and 34% at pH 5.0 and 7.0, respectively. A quicker release and translocation of SMZ from manure occurred during the initial 40 h, which gradually reduced over time. Intraparticle diffusion and Elovich kinetic models were the best fitted to leaching data. S3 exhibited the highest release and vertical translocation of SMZ, followed by S2, and S1; however, SMZ leaching was reduced by more than twofold in S3-B3. At pH 3.0, 2.0% biochar resulted in 99% reduction in SMZ leaching within 72 h, while 1.0% and 0.5% biochar applications reduced SMZ leaching to 99% within 120 and 144 h, respectively, in S3. The higher SMZ retention onto biochar could be due to electrostatic interactions, H-bonding, and π-π electron donor acceptor interactions.

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Facile synthesis and economic analysis of Cu/C catalyst for efficient biodiesel production

Liu

Zhu

Shi

et al. 2022

Intl J of Energy Research

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Summary A cheap biochar‐based metal catalyst, Cu/C was prepared by employing a facile pyrolysis method and using the waste biomass resource of rice straw as C source, and was used in the transesterification reaction of soybean oil to prepare biodiesel. With the addition of copper nitrate and with a pyrolysis temperature of 400°C for the biomass precursor, the as‐synthesized Cu/C‐400 catalyst with a loading amount of 6 wt% in the reaction dispersion results in a biodiesel yield of 88.5% ± 1.8%. The Cu/C‐400 catalyst still maintains a high activity with a biodiesel yield of 79.4% ± 1.2% after four cycles. The economic analysis about Cu/C‐400 catalyzed production of 1 t biodiesel is carried out by using the life cycle cost (LCC) method, indicating that the cost of 1 t soybean biodiesel is about 7727.8 RMB. In particular, the catalyst cost is only 5.6% of the total cost, indicating the low cost of the synthesized catalyst. Finally, the sensitivity analysis reveals that an appropriate increase in catalyst loading amount can improve the biodiesel yield, but lead to an increase in the total cost of biodiesel, and therefore reasonable control of catalyst loading amount is necessary. This work will inspire the further development and application of biochar‐based metal catalyst in biodiesel production.

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Engineered biochar composites with zeolite, silica, and nano-zerovalent iron for the efficient scavenging of chlortetracycline from aqueous solutions

Cited by 84 publications

References 58 publications

Turning date palm waste into carbon nanodots and nano zerovalent iron composites for excellent removal of methylthioninium chloride from water

Turning date palm waste into carbon nanodots and nano zerovalent iron composites for excellent removal of methylthioninium chloride from water

Sulfamethoxazole Leaching from Manure-Amended Sandy Loam Soil as Affected by the Application of Jujube Wood Waste-Derived Biochar

Facile synthesis and economic analysis of Cu/C catalyst for efficient biodiesel production

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