[Retracted] Optimization of Remazol Black B Removal Using Biochar Produced from Caulerpa scalpelliformis Using Response Surface Methodology

Ravindiran, Gokulan; Balaji, S. Suresh; Sivaprakasam, P.

doi:10.1155/2021/1535823

Cited by 16 publications

(10 citation statements)

References 28 publications

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“…The Annona reticulata seed was collected, dried completely for 10 hours at 100°C in a hot air oven, and then manually broken into numerous pieces [21]. The microbiological particles were fully crushed out after that, and the column material was collected and cleaned with a NaCl solution [22].…”

Section: Preparation Of Column Materialsmentioning

confidence: 99%

Valorization of Annona reticulata biochar by chitosan for the adsorption of Azo dye from Textile effluent

2023

Global NEST: The International Journal

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<p>Azo dye is a synthetic aromatic dye which are direct dye frequently used in textile industry to colour fibres. It also contributes to the damage of the environment. This study examines the adsorption biochar made from Annona reticulata to remove azo dye from textile wastewater. To improve the adsorption capacity, biochar valorized by chitosan molecules, Investigations were conducted on the use of chitosan-based materials that are acid-resistant for azo dye adsorption. In the batch experiment, basic operating parameters such as initial Azo dye concentrations, pH, contact time and bed height were assessed. The percentage removal efficiency for Azo dye was recorded as 67.18%, 75.88% and 94.37% for three dissimilar sized columns that were 6cm, 8cm, and 10cm. The UV–visible absorption spectroscopy was used to quantify the decolorization of dyes. The changed surface properties of the adsorbent produced from Annona reticulata were characterized by using SEM, XRD, and FTIR. The effectiveness of the column's adsorption was calculated mathematically by Yoon-Nelson, Thomas, and Adams-Bohart models. The model that best represents equilibrium isotherm data by adsorption had R2 values of 94.63, 86.67 and 96.35 respectively.</p>

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Section: Preparation Of Column Materialsmentioning

confidence: 99%

Valorization of Annona reticulata biochar by chitosan for the adsorption of Azo dye from Textile effluent

2023

Global NEST: The International Journal

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“…The water used for GC met the requirements of ISO Grade 78-2:1982, and the heavy metal copper, chromium and lead stock standard solutions were obtained [22]. Heavy metal solution from several sources was used for the method validation and calibration trials as well as an independent source for quality control [23].…”

Section: 4gas Chromatography (Gc)mentioning

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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“…Response surface methodology (RSM) is a mathematical and statistical tool used to analyze the effects of independent variables on a process under consideration to predict the target response and can provide accurate results with fewer experiments than classical methods [29]. Box-Behnken design (BBD) and central composite design (CCD) are two of the most popular and efficient RSM methods that have been successfully used in studies for dye removal, such as removal of malachite green from water by immobilization of Burkholderia cepacia [30], sorption of crystal violet and methylene blue onto water hyacinth (Rajnikant Prasad et al 2016), removal of remazol black B by Caulerpa scalpelliformis [31]. We hypothesize that the modification of bentonite surface by coating with Mg oxides nanoparticles could significantly enhance its reactivity and adsorption affinity for MG.…”

Section: Introductionmentioning

confidence: 99%

Optimization study of the adsorption of malachite green removal by MgO nano-composite, nano-bentonite and fungal immobilization on active carbon using response surface methodology and kinetic study

Hamad

2023

Environ Sci Eur

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Malachite green a typical organic dye containing triarylmethane, is discharged in wastewater by textile and leather manufacturing plants. MG can pollute the environment, and it represents a major hazard to humans and various living organisms. We have thus worked toward developing the optimum dye-absorptive material, which should possess the following characteristics: excellent adsorption capacity, good selectivity, favorable recycling and reuse potential, and ease and quickness of adsorption. In this study, nano-bentonite, novel hybrid MgO-impregnated clay, and fungal composites were synthesized for Malachite green removal from aqueous solution. Response surface methodology (RSM) was used for the optimization of the synthesis of adsorbents to achieve simultaneous maximum malachite green removal. The composites were characterized by Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM) and X-ray diffraction (XRD). According to the obtained results, MgO-impregnated clay exhibits a exhibited a higher adsorption capacity of MG than nano-bentonite and pure bentonite. The malachite green adsorption isotherm on MgO-impregnated clay corresponded with the Freundlich isotherm. However, the Langmuir adsorption isotherm was a superior fit for nano-bentonite. The adsorption activities of nano-bentonite and MgO-impregnated clay were fitted into a pseudo-second-order kinetic model. Based on the root-mean-square error, bias, and accuracy, statistical research has shown that the Halden model has optimal accuracy. In addition, despite being recycled numerous times, the adsorbent maintained its high structural stability and removal effectiveness for nano-bentonite (94.5–86%) and MgO-impregnated clay (92–83%).

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[Retracted] Optimization of Remazol Black B Removal Using Biochar Produced from Caulerpa scalpelliformis Using Response Surface Methodology

Cited by 16 publications

References 28 publications

Valorization of Annona reticulata biochar by chitosan for the adsorption of Azo dye from Textile effluent

Valorization of Annona reticulata biochar by chitosan for the adsorption of Azo dye from Textile effluent

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

Optimization study of the adsorption of malachite green removal by MgO nano-composite, nano-bentonite and fungal immobilization on active carbon using response surface methodology and kinetic study

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