Removal of Cr(VI) from water using pineapple peel derived biochars: Adsorption potential and re-usability assessment

Shakya, Amita; Agarwal, Tripti

doi:10.1016/j.molliq.2019.111497

Cited by 193 publications

(64 citation statements)

References 78 publications

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“…45 With the further increase of pyrolysis temperature, pore structure gradually appeared to be destroyed and the surface of biochar appeared to be layered stacks, especially at 700 C. It was consistent with the results from pineapple peel biochar. 46…”

Section: Thermogravimetric Analysismentioning

confidence: 99%

Preparation of biochar by mango peel and its adsorption characteristics of Cd(ii) in solution

et al. 2020

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Section: Thermogravimetric Analysismentioning

confidence: 99%

Preparation of biochar by mango peel and its adsorption characteristics of Cd(ii) in solution

et al. 2020

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“…The adsorption technique is the most efficient and adsorption on bio-waste (biosorption) is promising due to the simplicity, low cost, degradability, reusability, and efficiency 10 . Hence, the use of several bio-waste for the biosorption of dyes has received much attention, but pineapple ( Ananas comosus ) peel waste (ACP) is seldom reported, despite its abundance and viable potentials 11 .…”

Section: Introductionmentioning

confidence: 99%

“…The thermo-gravimetric analyzer (TGA; SDTA851e Mettler Toledo Model) with a 10 °C min −1 heating rate and 200 mL min −1 nitrogen flow rate analyzed the thermal stability. The pH drift method was used to determine the pH point of zero charged (pHpzc) 11 . The surface functionality was examined by the Fourier transform infrared spectrometer (FTIR; Brucker Model).…”

mentioning

confidence: 99%

Synthesis, characterization, and regeneration of an inorganic–organic nanocomposite (ZnO@biomass) and its application in the capture of cationic dye

Akpomie

Conradie

2020

Sci Rep

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Despite the efficiency of ZnO nanoparticle (NPs) composite adsorbents in the adsorption of various pollutants, there is presently no report on the combo of Znonps with biomass for adsorption. Besides, there is a dearth of information on the biosorption of celestine blue (ceB), a dye used in the nuclear and textile industry. in this study, biogenic-chemically mediated synthesis of a composite (Zno@Acp) was prepared by the impregnation of Znonps onto Ananas comosus waste (Acp) for the adsorption of ceB. the SeM, eDX, ftiR, XRD, Bet, and tGA characterizations showed the successful presence of Znonps on the biomass to form a nanocomposite. the uptake of ceB was enhanced by the incorporation of ZnONPs on ACP. A faster CEB adsorption onto ZnO@ACP (120 min) compared to ACP (160 min) was observed. The Langmuir (R 2 > 0.9898) and pseudo-second-order (R 2 > 0.9518) models were most appropriate in the description of the adsorption process. the impregnation of Znonps onto the biomass enhanced the spontaneity of the process and displayed endothermic characteristics. High CEB desorption of 81.3% from the dye loaded ZnO@ACP as well as efficient reusability showed the efficacy of the prepared nanocomposite for CEB adsorption. The pollution of environmental water from industrial effluents contaminated with industrial by-products is on the rise. This is attributed to the rapid growth of industries, hence the increase in industrial activities across the globe. About 700,000 tons of over 100,000 commercial dyes are produced annually in industries, which makes dye the most common water pollutant 1. Most dyes are used in the textile and paper industries and are frequently encountered in the effluents subsequently released into the environment 2,3. These dyes present in the environmental waters can be carcinogenic, mutagenic, and result in chronic illnesses in humans and aquatic organisms 3,4. Apart from that, they reflect or absorb light entering the water thus hindering the photosynthetic activity of aquatic plants 1. Therefore, the removal of dyes from wastewater is necessary to abate their harmful effects on the ecosystem 5,6. Most dye removal studies have focused on the removal of dyes such as methylene blue, congo red, malachite green, rhodamine B, methyl orange, methyl violet, reactive black, basic blue, acid yellow, brilliant green, and crystal violet 7,8. However, research on the removal of celestine blue (CEB) is rare despite the wide use of CEB in the nuclear and textile industries. Therefore, the removal of CEB from wastewater is important. Several techniques have been harnessed for the remediation of dye-polluted water, such as filtration, coagulation, oxidation, precipitation, reduction, photocatalytic degradation, solvent extraction, and adsorption 9. The adsorption technique is the most efficient and adsorption on bio-waste (biosorption) is promising due to the simplicity, low cost, degradability, reusability, and efficiency 10. Hence, the use of several bio-waste for the biosorption of dyes has received much attention,...

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“…Additionally, due to its porous structure and surface functional groups (e.g., carboxyl, carbonyl, and phenolic groups), biochar has been used as adsorbent of heavy metals in aqueous solutions, and for the purification of gases [6][7][8][9][10][11]. For example, biochar resulting from the pyrolysis of wasted marine macro-algae in a conventional furnace has been used for the removal of heavy metals in aqueous solutions showing a maximum adsorption capacity of 98.6, 122.1 and 84.3 mg/g for Cu 2+ , Cd 2+ and Zn 2+ , respectively [7].…”

Section: Introductionmentioning

confidence: 99%

Understanding the adsorption of heavy metals on oxygen-rich biochars by using molecular simulation

Silos-Llamas

Durán-Jiménez

Hernández‐Montoya

et al. 2020

Journal of Molecular Liquids

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The adsorption of heavy metals on biochars derived from Carya illinoinensis biomass was studied using molecular simulation tools to understand the adsorption mechanism. The experimental conditions to obtain the best performing biochar were determined using a L 16 orthogonal array of the Taguchi method and considering the removal of heavy metals from water as response variable. The studied factors were the mass of precursor, drying temperature, heating rate, maximum temperature of thermal treatment and holding time.Particularly, it was possible to obtain samples of biochar that were very efficient for the removal of Al 3+ , Pb 2+ , Cd 2+ , Cu 2+ and Zn 2+ from water, using relatively low temperatures of carbonization (200-350 °C) and low processing times (20-50 min). The most influencing factor in the final properties of biochar was the maximum temperature of the thermal treatment. The biochars obtained were rich in oxygen functional groups (carboxylic and phenolic), which favored the removal of heavy metals from water by complexation and ionic exchange mechanisms. According with the data obtained by molecular simulation, the

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Removal of Cr(VI) from water using pineapple peel derived biochars: Adsorption potential and re-usability assessment

Cited by 193 publications

References 78 publications

Preparation of biochar by mango peel and its adsorption characteristics of Cd(ii) in solution

Preparation of biochar by mango peel and its adsorption characteristics of Cd(ii) in solution

Synthesis, characterization, and regeneration of an inorganic–organic nanocomposite (ZnO@biomass) and its application in the capture of cationic dye

Understanding the adsorption of heavy metals on oxygen-rich biochars by using molecular simulation

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