Comparative study of Hg(<scp>ii</scp>) biosorption performance of xanthated and charred sugarcane bagasse from aqueous solutions

Homagai, Puspa Lal; Bhattarai, Manoj; Radhika, K M; Ghimire, Kedar Nath; Paudyal, Hari; Bhattarai, Ajaya

doi:10.1039/d2ra05266k

Cited by 2 publications

(3 citation statements)

References 60 publications

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“…Metal removal from wastewater can be accomplished using a variety of sorbents prepared by coating, chemical synthesis, and other methods [18,[86][87][88][89][90][91][92][93][94][95][96][97]. Rice husk is a waste product created during the milling of rice.…”

Section: Jovanovic Isothermmentioning

confidence: 99%

Biosorption of Zn (II) onto Rice Husk Ash: Isothermal Remodelling

Dan-Iya,

Khayat,

Shukor

2023

J Environ Bioremed Toxicol

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Zn is a heavy metal often found at elevated concentrations in effluents as high as 300 ppm from the rubber processing industry as it is used for the vulcanization of rubber. The rice milling process produces rice husk as a by-product. It is one of the most important agricultural leftovers in terms of volume. The data of the sorption isotherm of Zn (II) (CV) sorption onto rice husk ash, which was plotted using linearized plots of isothermal models were reanalyzed using isothermal models using nonlinear regression. As the datapoints were small, isotherms with parameters of only up to three were utilized to prevent overfitting. The nineteen models were Henry, Langmuir, Freundlich, Temkin, Dubinin-Radushkevich, Jovanovic, Redlich-Peterson, Sips, Toth, Hill, Khan, BET, Vieth-Sladek, Radke-Prausnitz, Brouers–Sotolongo, Fritz-Schlunder III, Unilan, Fowler-Guggenheim and Moreau. Statistical analysis based on error function analyses such as root-mean-square error (RMSE), adjusted coefficient of determination (adjR2), accuracy factor (AF), bias factor (BF), Bayesian Information Criterion (BIC), corrected AICc (Akaike Information Criterion), and Hannan-Quinn Criterion (HQC) showed that Freundlich, followed by Langmuir and the Jovanovic models as the best top three models. The value of the maximum monolayer adsorption capacity for Zn binding to rice husk ash according to the Langmuir’s parameter qmL was 7.33 mg g-1 (95% Confidence interval from5.464 to 9.187), while bL (L mg-1), the Langmuir model constants was 0.011 L mg-1 (95% C.I. from 0.030 to 0.182). As the Freundlich equation is unable to model the maximum adsorption, the Halsey rearrangement of the Freundlich equation was utilized and gave the estimated maximum absorption of 7.20 mg g-1, which is very close to the experimental value. The constant values obtained in this study, especially the Langmuir model are largely different from the previously reported linearized approach.

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Section: Jovanovic Isothermmentioning

confidence: 99%

Biosorption of Zn (II) onto Rice Husk Ash: Isothermal Remodelling

Dan-Iya,

Khayat,

Shukor

2023

J Environ Bioremed Toxicol

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“…5,6 Mercury exposure can cause various health problems and irreversible damage to the human nervous system, leading to neurological and renal disturbances, mental confusion, spasms, and even death in severe cases. 7 Lead is a toxic metal that poses risks to various body systems including the nervous, hematopoietic, immune, renal, and reproductive systems, as well as the liver. Elevated blood levels can lead to symptoms such as drowsiness, memory loss, and insomnia.…”

Section: Introductionmentioning

confidence: 99%

“…Accumulation of cadmium in human organs can cause kidney, liver, and bone damage, leading to conditions like hypertension, diabetes, and bone discomfort. A famous heavy metal cadmium poisoning incident in some circumstances resulted in a painful and sometimes fatal condition. , Mercury exposure can cause various health problems and irreversible damage to the human nervous system, leading to neurological and renal disturbances, mental confusion, spasms, and even death in severe cases . Lead is a toxic metal that poses risks to various body systems including the nervous, hematopoietic, immune, renal, and reproductive systems, as well as the liver.…”

Section: Introductionmentioning

confidence: 99%

Efficient Removal of Pb²⁺, Cd²⁺, and Hg²⁺ from Wastewater Using Advanced Graphene Oxide-Zirconium Hybrid Composite

Patel,

Lanakapati,

Maheria

2024

ACS Appl. Eng. Mater.

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The contamination of water by heavy metals poses a significant threat to both the environment and public health, and hence, the effective purification of contaminated water remains a formidable challenge. Recently, graphene oxide (GO) has shown significant potential for removing heavy metals due to its large surface area, availability of functional groups, and high adsorption affinity. However, it is associated with several disadvantages such as aggregation, reduced surface area, and pH sensitivity. To overcome such drawbacks, the surface of GO has been modified with zirconium and amino trimethylene phosphonic acid (ATMP), forming the GO-ZrATMP composite. The newly synthesized hybrid GO-ZrATMP composite has been well characterized by several characterization techniques such as Fourier-transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), thermal gravimetric analysis (TGA), scanning electron microscopy with energydispersive X-ray spectroscopy (SEM-EDS), X-ray photoelectron spectroscopy (XPS), high-resolution transmission electron microscopy (HR-TEM), etc. This composite has been employed for the adsorption of Pb 2+ , Cd 2+ , and Hg 2+ from aqueous solution. Adsorption isotherm and kinetics results showed that the adsorption of Pb 2+ , Cd 2+ , and Hg 2+ on GO-ZrATMP was a monolayer adsorption process and dominated by physisorption and intraparticle diffusion. Thermodynamic studies revealed that the sorption process is endothermic, spontaneous, and feasible. The maximum adsorption capacity was found to be 373, 320, and 281 mg/g for Pb 2+ , Cd 2+ , and Hg 2+ , respectively. Further, a study pertaining to distribution studies (in aqueous and various electrolyte media) and metal separations has been conducted. Based on these studies, efficient binary and ternary metal separations have been achieved using GO-ZrATMP composite material. The present study clearly demonstrates the potential of GO-ZrATMP composite in eliminating heavy metals from both water and real wastewater.

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Comparative study of Hg(ii) biosorption performance of xanthated and charred sugarcane bagasse from aqueous solutions

Abstract: Ion exchange adsorption mechanism of Hg(ii) onto the monomeric unit of charred xanthated sugarcane bagasse (CXSB).

Cited by 2 publications

References 60 publications

Biosorption of Zn (II) onto Rice Husk Ash: Isothermal Remodelling

Biosorption of Zn (II) onto Rice Husk Ash: Isothermal Remodelling

Efficient Removal of Pb²⁺, Cd²⁺, and Hg²⁺ from Wastewater Using Advanced Graphene Oxide-Zirconium Hybrid Composite

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Comparative study of Hg(ii) biosorption performance of xanthated and charred sugarcane bagasse from aqueous solutions

Abstract: Ion exchange adsorption mechanism of Hg(ii) onto the monomeric unit of charred xanthated sugarcane bagasse (CXSB).

Cited by 2 publications

References 60 publications

Biosorption of Zn (II) onto Rice Husk Ash: Isothermal Remodelling

Biosorption of Zn (II) onto Rice Husk Ash: Isothermal Remodelling

Efficient Removal of Pb2+, Cd2+, and Hg2+ from Wastewater Using Advanced Graphene Oxide-Zirconium Hybrid Composite

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Efficient Removal of Pb²⁺, Cd²⁺, and Hg²⁺ from Wastewater Using Advanced Graphene Oxide-Zirconium Hybrid Composite