Removal of Acid Yellow 11 dye using a novel modified biochar derived from watermelon peels

El‐Nemr, Mohamed A.; Abdelmonem, Nabil; Ismail, Ibrahim; Ragab, Safaa; Elnemr, Ahmed

doi:10.5004/dwt.2020.26207

Cited by 36 publications

(36 citation statements)

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“…The second phase results in a 56.30% weight loss at 150-350 °C and a 3.9% weight loss at 150-275 °C for SD and SD-NH2. The third phase results in a 22.55% weight loss at 350-1000 °C and a 30.03% weight loss at 275-1000 °C, for SD and SD-NH2, respectively [7,34,35]. The weight retained by SD-NH2 biochars and the percentages of 2.96% obtained, as well as the DTA curves, indicate that the SD-NH2 biochar amine-modified sample exhibits more stability than the SD biochar [7,34,35].…”

Section: Thermal Analysis (Tga)mentioning

confidence: 87%

“…Modified SD (SD-NH2 ) was prepared by boiling the sawdust (25 g) for 2 h in a refluxed system utilizing a Soxhlet in a 100 mL solution of 25% NH 4 OH (25%), followed by filtration and washing with distilled water and ethanol. The final charcoal product was dried in an oven set to 70 • C [34,35]. H 2 SO 4 and NH 4 OH were obtained from Aldrich Chemicals, Milwaukee, WI, USA.…”

Section: Preparation Of Unmodified and Modified Sawdust Raw Materialsmentioning

confidence: 99%

“…The decomposition of sawdust biochar occurs in three steps, whereas the SD-NH 2 biochars decompose in two steps, as illustrated in Figure 8. The first step occurred between 50 and 150 • C as a result of the loss of surface-bound water and moisture present in the sample, resulting in a weight loss of 6.7, 13.21, and 6.7%, respectively, for SD and SD-NH 2 [7,34,35]. The second phase results in a 56.30% weight loss at 150-350 • C and a 3.9% weight loss at 150-275 • C for SD and SD-NH 2 .…”

Section: Thermal Analysis (Tga)mentioning

confidence: 99%

“…The third phase results in a 22.55% weight loss at 350-1000 • C and a 30.03% weight loss at 275-1000 • C, for SD and SD-NH 2 , respectively [7,34,35]. The weight retained by SD-NH 2 biochars and the percentages of 2.96% obtained, as well as the DTA curves, indicate that the SD-NH 2 biochar aminemodified sample exhibits more stability than the SD biochar [7,34,35]. This enhances the susceptibility to consume SD during anaerobic digestion, which explains why the cumulative amount of biogas produced was greater when SD biochar was used rather than SD-NH 2 biochars.…”

Section: Thermal Analysis (Tga)mentioning

confidence: 99%

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Synthesis, Characterization, and Synergistic Effects of Modified Biochar in Combination with α-Fe2O3 NPs on Biogas Production from Red Algae Pterocladia capillacea

et al. 2021

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This study is the first work that evaluated the effectiveness of unmodified (SD) and modified biochar with ammonium hydroxide (SD-NH2) derived from sawdust waste biomass as an additive for biogas production from red algae Pterocladia capillacea either individually or in combination with hematite α-Fe2O3 NPs. Brunauer, Emmett, and Teller, Fourier transform infrared, thermal gravimetric analysis, X-ray diffraction, transmission electron microscopy, Raman, and a particle size analyzer were used to characterize the generated biochars and the synthesized α-Fe2O3. Fourier transform infrared (FTIR) measurements confirmed the formation of amino groups on the modified biochar surface. The kinetic research demonstrated that both the modified Gompertz and logistic function models fit the experimental data satisfactorily except for 150 SD-NH2 alone or in combination with α-Fe2O3 at a concentration of 10 mg/L. The data suggested that adding unmodified biochar at doses of 50 and 100 mg significantly increased biogas yield compared to untreated algae. The maximum biogas generation (219 mL/g VS) was obtained when 100 mg of unmodified biochar was mixed with 10 mg of α-Fe2O3 in the inoculum.

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Section: Thermal Analysis (Tga)mentioning

confidence: 87%

Section: Preparation Of Unmodified and Modified Sawdust Raw Materialsmentioning

confidence: 99%

Section: Thermal Analysis (Tga)mentioning

confidence: 99%

Section: Thermal Analysis (Tga)mentioning

confidence: 99%

See 2 more Smart Citations

Synthesis, Characterization, and Synergistic Effects of Modified Biochar in Combination with α-Fe2O3 NPs on Biogas Production from Red Algae Pterocladia capillacea

et al. 2021

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“…Every strategy has its own set of benefits and drawbacks. However, adsorption is a popular method for removing contaminants from wastewater because it is reliable, safe and costeffective [23][24][25][26][27][28]. Additionally, biosorption of heavy metals from aqueous solutions using biopolymer is a relatively new method that has shown to be very promising in the removal of pollutants from aqueous effluents and toxic metals from wastewater [29][30][31][32][33].…”

Section: Introductionmentioning

confidence: 99%

New magnetic cellulose nanobiocomposites for Cu(II), Cd(II) and Pb(II) ions removal: kinetics, thermodynamics and analytical evaluation

Nemr

El-Assal

El-Sikaily

et al. 2021

Nanotechnol. Environ. Eng.

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Magnetic cellulose nanobiocomposites have been designed and synthesized from sugarcane bagasse to develop new and adequacy adsorbents for heavy metals adsorption from water. In this study, three different ways were followed for three nanocomposites' preparation: (1) coating Fe 3 O 4 through preparation of dissolved cellulose in (7% NaOH and 12% urea) aqueous solution (NFC1), (2) coating Fe 3 O 4 with cellulose through the co-precipitation (NFC2) and (3) crosslinking the cellulose and Fe 3 O 4 with formaldehyde (NFC3). The high-resolution transmission electron microscope (HR-TEM) images confirmed the particle size was ranged from 6 to 25 nm. The three novel nanocomposites' characterization was accomplished by study of surface area, Fourier transform infrared (FT-IR), thermal gravimetric analysis (TGA) and X-ray diffraction (XRD). The sorption feature of NFC1, NFC2 and NFC3 toward Cu(II), Cd(II) and Pb(II) ions was explored using the batch equilibrium technique with various experimental controlling parameters. The efficiency of NFC1 appears to be the best for removal of Pb(II) and Cu(II) (3150 and 2150 μmol g −1 ) and NFC2 more adequate nanocomposite for removal of Cd(II) 800 μmol g −1 . The optimum time was proceeded via fast sorption equilibrium at 5-30 min and better fitted with the pseudo-second order kinetic model. Adsorption isotherm obeys Langmuir isotherm that provides better model than the Freundlich isotherm model. According to the thermodynamic parameters, the adsorption was dominated by enthalpic rather than the entropic changes.

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Agro‐Wastes as Low‐Cost Biosorbent for Dyes Removal from Wastewater

Gogoi

Samanta

Dahutia

2022

Agriculture Waste Management and Bioresource

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Removal of Acid Yellow 11 dye using a novel modified biochar derived from watermelon peels

Cited by 36 publications

References 0 publications

Synthesis, Characterization, and Synergistic Effects of Modified Biochar in Combination with α-Fe2O3 NPs on Biogas Production from Red Algae Pterocladia capillacea

Synthesis, Characterization, and Synergistic Effects of Modified Biochar in Combination with α-Fe2O3 NPs on Biogas Production from Red Algae Pterocladia capillacea

New magnetic cellulose nanobiocomposites for Cu(II), Cd(II) and Pb(II) ions removal: kinetics, thermodynamics and analytical evaluation

Agro‐Wastes as Low‐Cost Biosorbent for Dyes Removal from Wastewater

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