Experimental and chemometric analysis of bioremediation of remazol dyes using biochar derived from green seaweeds

Ravindiran, Gokulan; Prabhu, Ganapathy Ganesh; Alagumalai, Avinash; Jegan, J.

doi:10.5004/dwt.2020.25339

Cited by 22 publications

(5 citation statements)

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“…These biochars were prepared from discarded waste materials, hence they can be considered as more efficient and cost-effective adsorbent than chitosan-tripolyphosphate/kaolin clay. In addition, biochar prepared from U. reticulate can be adsorbed other similar to RBBR like Remazol Black B, Remazol Brilliant Orange 3R, Remazol Brilliant Violet 5R from aqueous solution with between 173.22 mg/g and 186.32 mg/g adsorption (Gokulan et al 2020). Hence biochars taken for the study could also be capable to remove these dyes, however, further study is needed for quantification of exact concentration.…”

Section: Mechanism Of Adsorptionmentioning

confidence: 99%

Comparative assessment for removal of anionic dye from water by different waste-derived biochar vis a vis reusability of generated sludge

Singh

Ahsan

Pandey

et al. 2022

Biochar

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In this study, four biochars prepared from different crop residue waste i.e. sugarcane bagasse (SBB), coconut shell (CNB), paddy straw (PDB), and distilled waste of lemongrass (LGB) were evaluated for removal of Remazol Brilliant Blue R from the aqueous system. The RBBR adsorption capacities of biochar were 97–79% for SBB, 99.9–99.47% for CNB, 66.1–48% for PDB, and 78–68% for LGB, dominantly controlled by their aromaticity and mineral content. The Langmuir and Freundlich isotherms and pseudo-second-order kinetic models have described the chemisorption of RBBR on biochar surfaces. The thermodynamic data suggested that adsorption was spontaneous and endothermic. These biochars demonstrated excellent reusability (till four cycles with 50–61% regeneration). The purified water and biochar dye sludge demonstrated no phytotoxicity. The findings obtained in this study may provide supports for the potential of biochars for anionic dye removal from water and utilization of generated sludge for zero waste-producing technologies in the future.

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Section: Mechanism Of Adsorptionmentioning

confidence: 99%

Comparative assessment for removal of anionic dye from water by different waste-derived biochar vis a vis reusability of generated sludge

Singh

Ahsan

Pandey

et al. 2022

Biochar

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“…Inner diameter of 3cm and 50cm length glass column used for adsorption study. Particle sizes of the biochar, which is made from the shell of the tamarind indica plant, range from 0.5 to 1.5 mm [19]. The column was filled with adsorbent, and the bottom was covered with glass wool.…”

Section: 3adsorption Studymentioning

confidence: 99%

Synthesis and adsorption capacity of biochar derived from Tamarindus indica shell for the removal of heavy metal

2023

Global NEST: The International Journal

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<p>Tamarindus indica shell biochar is employed as an alternate adsorbent precursor for the removal of heavy metal ions from aqueous solutions. It investigated the Tamarindus indica shell biochar's capacity to absorb chromium (Cr), copper (Cu), and Lead (Pb). This study showed the extensive explored how biosorption experimental limitations counting primary metal attentiveness, adsorbent dosage, temperature, and contact time affect the process. The complete analysis of the Tamarindus indica shell's adsorption capability with respect to chromium, copper, and nickel removal was conducted using a batch adsorption procedure. Determining the amount of heavy metal removal in the aqueous solution proceeded by Gas Chromatography (GC). The experimental data analyzed using the Yoon Nelson and Thomson models to regulate the equilibrium isotherms. The optimal parameters for the overall adsorption model were determined by using ANOVA. Investigate the adsorbent's surface area to determine the presence of heavy metal presents using SEM, XRD, and FTIR techniques. Each researched heavy metal's adsorption capability is listed below: Cr = 6.07 mg/L, Cu = 5.53 mg/L and Pb = 5.497mg/L with a removal percentage of 64%, 92% and 78%, respectively. The results showed that biochar generated from Tamarindus indica shells is an effective adsorbent for removing copper from aqueous solutions but not a viable biosorbent for removing chromium. Also, the regenerated column's adsorption capability was examined. The outcomes of the research demonstrated that bio-char, which produced from Tamarindus indica shell can be employed as an efficient and reasonably priced adsorbent to remove heavy metal ions from aqueous solutions.</p>

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“…Thermodynamic parameters, such as Gibbs free energy (∆G°), enthalpy (∆H°), and entropy (∆S°), were calculated to elaborate the adsorption process. The parameters were calculated with following equations (Saha et al, 2011;Gokulan et al, 2020;Kankılıç et al, 2020).…”

Section: Adsorption Studiesmentioning

confidence: 99%

Scenedesmus regularis: An alternative biosorbent for the efficient and fast removal of methylene blue

2022

Global NEST: The International Journal

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<p>This study focused on removing methylene blue (MB) from aqueous solutions using microalga Scenedesmus regularis as a biosorbent. The biomass was characterized by Fourier transform infrared spectroscopy (FT-IR) and field emission scanning electron microscopy (FE-SEM). The difference in thermal properties of the biomass was investigated by thermogravimetric analysis (TGA). The adsorption capacity of S. regularis was tested with different environmental key parameters (pH, temperature, biosorbent dosage, dye concentration, and contact time) in batch system experiments. The maximum adsorption capacity was 341.34 mg/g at a pH of 6.8, a temperature of 25 °C, a dye concentration of 250 mg/L, and a biosorbent concentration of 5 mg. Approximately 92% of the dye was removed within two minutes, and the removal efficiency reached 99% within 15 minutes. MB adsorption equilibrium data fit well with the Langmuir (R2=0.994) and Dubinin-Radushkevich (R2=0.993) isotherm models. The kinetic model of adsorption followed pseudo-second-order kinetics. Thermodynamic parameters showed that the adsorption process was endothermic and physical, favorable, and spontaneous. The results showed that S. regularis is an eco-friendly biosorbent with efficient performance that may be used for MB removal without any modification.</p>

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Experimental and chemometric analysis of bioremediation of remazol dyes using biochar derived from green seaweeds

Cited by 22 publications

References 0 publications

Comparative assessment for removal of anionic dye from water by different waste-derived biochar vis a vis reusability of generated sludge

Comparative assessment for removal of anionic dye from water by different waste-derived biochar vis a vis reusability of generated sludge

Synthesis and adsorption capacity of biochar derived from Tamarindus indica shell for the removal of heavy metal

Scenedesmus regularis: An alternative biosorbent for the efficient and fast removal of methylene blue

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