As(V) removal using biochar produced from an agricultural waste and prediction of removal efficiency using multiple regression analysis

Lata, Sneh; Prabhakar, Roshan; Adak, Asok; Samadder, Sukha Ranjan

doi:10.1007/s11356-019-06300-w

Cited by 34 publications

(7 citation statements)

References 53 publications

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“…It is a universal adsorbent with a well-developed internal surface. Current research focuses on new technologies based on thermally and chemically modified activated carbon obtained from sewage sludge and agricultural and forest waste (Imamoglu and Tekir 2008 ; Kim et al 2008 ; Krishnan et al 2011 ; Bhatnagar et al 2013 ; Li et al 2019 ; Lata et al 2019 ; Li et al 2020 ; Shen et al 2020 ).…”

Section: Introductionmentioning

confidence: 99%

Dynamics modeling of multicomponent metal ions’ removal onto low-cost buckwheat hulls

Tomczak

Kamiński

2020

Environ Sci Pollut Res

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The process of adsorption from water solutions containing a ternary system of Cu (II), Zn (II), and Ni (II) ions onto buckwheat hulls as a biosorbent was considered. The sorption capacity for buckwheat hulls was determined in sorption equilibrium batch experiments. The sorption kinetics equation corresponding to the mechanism of metal ions with the adsorbent was assumed. A new method for modeling sorption in a packed column was presented. A system of partial differential equations describing the mass balance, due to the assumption of a properly defined variable, was transformed into a system of ordinary nonlinear equations, which enables the identification of object parameters. The sorption capacity of the sorbent, sorption isotherms, and kinetics equations were used in dynamics modeling.

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Section: Introductionmentioning

confidence: 99%

Dynamics modeling of multicomponent metal ions’ removal onto low-cost buckwheat hulls

Tomczak

Kamiński

2020

Environ Sci Pollut Res

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“…Attention has focused on applying modification techniques (physical/chemical treatments and composites) to enhance the adsorption of As from water, and multiple methods have been employed for biochar surface modifications. These include strong acids, strong bases, metallic iron, metal oxides, nanoparticles, and metal/nanoparticle composites (Cuong et al 2021;Hussain et al 2020b;Lata et al 2019;Singh et al 2020). Table 3 summarizes studies using acids and bases (H 2 SO 4 , H 3 PO 4 , KOH, and H 2 O 2 ), metal ions and oxides [iron (Fe), manganese (Mn), bismuth (Bi), zinc (Zn), cerium (Ce), ferric oxide (Fe 2 O 3 ), manganese dioxide (MnO 2 ), manganese oxide (MnO), zinc oxide (ZnO), and copper oxide (CuO)], acid/bases and metals, metal oxides composites [Fe-Mn oxides, Ca-Fe oxides, Ce-Mn oxides, nickel (Ni)-Mn oxides, Fe-Mn-Ce oxides], and nanoparticles [nanoscale TiO 2 , zerovalent iron nanoparticles (nZVI)].…”

Section: Modified Biocharsmentioning

confidence: 99%

“…Using banana pith as a raw material, a Fe-modified biochar has been used to remove As from aqueous solutions. After Fe impregnation, the surface area (31.6 m 2 g -1 ) increased by almost eight times, leading to a relatively higher adsorption capacity for As(V) compared to raw biochar (Lata et al 2019). Using rice straw as a raw material, a novel Fe-modified biochar produced by FeCl 3 modification has been used for As(V) removal from aqueous solutions.…”

Section: Importance Of Metal Iron (Zerovalent Iron and Iron Ion)mentioning

confidence: 99%

Arsenic removal from water and soils using pristine and modified biochars

Zhang

Cho

Vithanage

et al. 2022

Biochar

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Arsenic (As) is recognized as a persistent and toxic contaminant in the environment that is harmful to humans. Biochar, a porous carbonaceous material with tunable functionality, has been used widely as an adsorbent for remediating As-contaminated water and soils. Several types of pristine and modified biochar are available, and significant efforts have been made toward modifying the surface of biochars to increase their adsorption capacity for As. Adsorption capacity is influenced by multiple factors, including biomass pyrolysis temperature, pH, the presence of dissolved organic carbon, surface charge, and the presence of phosphate, silicate, sulfate, and microbial activity. Improved As adsorption in modified biochars is attributed to several mechanisms including surface complexation/precipitation, ion exchange, oxidation, reduction, electrostatic interactions, and surface functional groups that have a relatively higher affinity for As. Modified biochars show promise for As adsorption; however, further research is required to improve the performance of these materials. For example, modified biochars must be eco-friendly, cost-effective, reliable, efficient, and sustainable to ensure their widespread application for immobilizing As in contaminated water and soils. Conducting relevant research to address these issues relies on a thorough understanding of biochar modifications to date. This study presents an in-depth review of pristine and modified biochars, including their production, physicochemical properties, and As adsorption mechanisms. Furthermore, a comprehensive evaluation of biochar applications is provided in As-contaminated environments as a guide for selecting suitable biochars for As removal in the field. Graphical Abstract

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“…Several arsenic removal technologies such as ion exchange, membrane filtration, adsorption, coagulation and precipitation have been tried by researchers worldwide. Out of these technologies, adsorption is drawing more attention from the researchers owing to the involvement of low cost, high removal efficiency, safer to handle, low sludge production, simplicity in design, and easier applicability in the rural area (Lata et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Efficient Loading of Mano Mn Particles On Calcined Laterite Soil (Lt-nMn) For Higher Removal of As(III) Ions From Groundwater: Adsorption And Eco-Scale Analysis

Prabhakar

Ghosh

Malik

et al. 2021

Preprint

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Occurrence of arsenic in the groundwater has become a cause for concern in many countries. The presence of As(III) species in the groundwater had been one of the biggest challenges for the water workers especially in the south east Asian countries. Nano based adsorption techniques are gaining attention among researchers for the removal of arsenic ions. However, synthesis of nano-adsorbents is a costly affair. Therefore, the present study utilized the cheap and readily available laterite soil as a base material for nano coating. Nano sized manganese (nMn) particles were synthesized by chemical reduction method and later coated on calcined laterite (Lt-nMn). Coating with 0.1 M nMn provided the best As(III) removal efficiency. The prepared material was characterised for its morphological and surface properties. Phase analysis using XRD (X-ray diffraction) showed the presence of zero valent manganese species, which assisted in adsorption. Adsorption studies were conceded by selecting the different affecting parameters such as contact time, concentration, dose, temperature, and pH. Very high removal in less time regime led to the investigation of the oxidation mechanism. Phosphate and sulphate anions insignificantly reduced the removal efficiency. Langmuir model for the sorption isotherms and pseudo-second order kinetic model for the sorption kinetics symbolized the experimental data. Sustainability studies in terms of eco-scaling and cost analysis were performed for the applied method of production of the nano materials. Adsorber design analysis was also conducted to estimate the required amount of Lt-nMn particles for achieving the desired equilibrium As(III) concentration.

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As(V) removal using biochar produced from an agricultural waste and prediction of removal efficiency using multiple regression analysis

Cited by 34 publications

References 53 publications

Dynamics modeling of multicomponent metal ions’ removal onto low-cost buckwheat hulls

Dynamics modeling of multicomponent metal ions’ removal onto low-cost buckwheat hulls

Arsenic removal from water and soils using pristine and modified biochars

Efficient Loading of Mano Mn Particles On Calcined Laterite Soil (Lt-nMn) For Higher Removal of As(III) Ions From Groundwater: Adsorption And Eco-Scale Analysis

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