Removal of nitrate from aqueous solution by modified sugarcane bagasse biochar

Hafshejani, Laleh Divband; Hooshmand, Abdolrahim; Naseri, Abd Ali; Mohammadi, Amir Soltani; Abbasi, Fariborz; Bhatnagar, Amit

doi:10.1016/j.ecoleng.2016.06.035

Cited by 195 publications

(97 citation statements)

References 66 publications

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“…Batch experiments were carried out at different NO 3 − -N concentrations (5,10,15,20,50, 100 mgN·L −1 ). For adsorption equilibrium studies, experiments were conducted in 500 ml conical flasks containing 2.0 g of adsorbent, 200 ml nitrate solution, and 0.01 M NaCl to keep ion strength at 20°C.…”

Section: Batch Experimentsmentioning

confidence: 99%

Adsorption of Nitrate onto ZnCl₂-Modified Coconut Granular Activated Carbon: Kinetics, Characteristics, and Adsorption Dynamics

Liu

Wang

2018

Advances in Materials Science and Engineering

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Coconut granular activated carbon (CGAC) was modified by impregnating with ZnCl 2 solution to remove nitrate from aqueous solutions. Sorption isotherm and kinetic studies were carried out in a series of batch experiments. Nitrate adsorption of both ZnCl 2 -modified CGAC and CGAC fitted the Langmuir and Freundlich models. Batch adsorption isotherms indicated that the maximum adsorption capacities of ZnCl 2 -modified CGAC and CGAC were calculated as 14.01 mgN·g −1 and 0.28 mgN·g −1 , respectively. e kinetic data obtained from batch experiments were well described by pseudo-second-order model. e column study was used to analyze the dynamic adsorption process. e highest bed adsorption capacity of 1.76 mgN·g −1 was obtained by 50 mgN·L −1 inlet nitrate concentration, 20 g adsorbents, and 10 ml·min −1 flow rate. e dynamic adsorption data were fitted well to the omas and Yoon-Nelson models with coefficients of correlation R 2 > 0.834 at different conditions. Surface characteristics and pore structures of CGAC and ZnCl 2 -modified CGAC were performed by SEM and EDAX and BET and indicated that ZnCl 2 had adhered to the surface of GAC after modified. Zeta potential, Raman spectra, and FTIR suggested the electrostatic attraction between the nitrate ions and positive charge. e results revealed that the mechanism of adsorption nitrate mainly depended on electrostatic attraction almost without any chemical interactions.

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Section: Batch Experimentsmentioning

confidence: 99%

Adsorption of Nitrate onto ZnCl₂-Modified Coconut Granular Activated Carbon: Kinetics, Characteristics, and Adsorption Dynamics

Liu

Wang

2018

Advances in Materials Science and Engineering

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“…Nitrate represents another anion species that is strongly correlated with eutrophication [119]. Divband et al [120] developed a biochar from the pyrolysis of sugarcane bagasse, showing the best operative conditions after 1 h of using a solution with a pH of 4.64 and a starting nitrate concentration of up-to-a-dose-adsorbent of 2 g/L. Furthermore, species such as fluoride [121] and uranyl oxides [122,123] could be efficiently removed from watery phases by using biochar.…”

Section: Environmental Remediation Applicationsmentioning

confidence: 99%

A Review of Non-Soil Biochar Applications

et al. 2020

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Biochar is the solid residue that is recovered after the thermal cracking of biomasses in an oxygen-free atmosphere. Biochar has been used for many years as a soil amendment and in general soil applications. Nonetheless, biochar is far more than a mere soil amendment. In this review, we report all the non-soil applications of biochar including environmental remediation, energy storage, composites, and catalyst production. We provide a general overview of the recent uses of biochar in material science, thus presenting this cheap and waste-derived material as a high value-added and carbonaceous source.

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“…It is of particular concern given the high level of nutrients contained, such as phosphorus and nitrogen compounds [1,2]. Nitrogen compounds such as nitrate can be problematic due to the widespread use of nitrogen based fertilizers and soil instability [3]. Nitrogen fertilizers undergo several chemical transformation processes such as ammonification, nitrification, de-nitrification, nitrogen fixation and immobilization in soil [4].…”

Section: Introductionmentioning

confidence: 99%

“…Thus, it is important to develop cost effective C 2019, 5, 47 3 of 20 to other nut shells such as pistachio, pecan, hazelnut and almond [24]. Macadamia nutshell was placed in a stainless-steel square container with a lid on (17.78 W × 16.51 L × 10.16 H cm 3 ) and pyrolysed using a kiln (Rio Grande PMC Model #703-118, Rio Grande, Albuquerque, NM, USA). The kiln was programmed for slow pyrolysis process conditions to drive the internal chamber to two temperatures 900 • C and 1000 • C at a rate 600 • C/h and holding time for an hour before cooling down to room temperature.…”

Section: Introductionmentioning

confidence: 99%

Macadamia Nutshell Biochar for Nitrate Removal: Effect of Biochar Preparation and Process Parameters

Bakly

Al-Juboori

Bowtell

2019

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Agricultural runoff is a major cause of degradation to freshwater sources. Nitrate is of particular interest, due to the abundant use of nitrogen-based fertilizers in agricultural practices globally. This study investigated the nitrate removal of biochar produced from an agricultural waste product, macadamia nutshell (MBC). Kinetic experiments and structural analyses showed that MBC pyrolsed at 900 • C exhibited inferior NO 3 − removal compared to that pyrolsed at 1000 • C, which was subsequently used in the column experiments. Concentrations of 5, 10 and 15 mg/L, with flowrates of 2, 5 and 10 mL/min, were examined over a 360 min treatment time. Detailed statistical analyses were applied using 2 3 factorial design. Nitrate removal was significantly affected by flowrate, concentration and their interactions. The highest nitrate removal capacity of 0.11 mg/g MBC was achieved at a NO 3 − concentration of 15 mg/L and flowrate of 2 mL/min. The more crystalline structure and rough texture of MBC prepared at 1000 • C resulted in higher NO 3 − removal compared to MBC prepared at 900 • C.The operating parameters with the highest NO 3 − removal were used to study the removal capacity of the column. Breakthrough and exhaustion times of the column were 25 and 330 min respectively. Approximately 92% of the column bed was saturated after exhaustion.

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Removal of nitrate from aqueous solution by modified sugarcane bagasse biochar

Cited by 195 publications

References 66 publications

Adsorption of Nitrate onto ZnCl₂-Modified Coconut Granular Activated Carbon: Kinetics, Characteristics, and Adsorption Dynamics

Adsorption of Nitrate onto ZnCl₂-Modified Coconut Granular Activated Carbon: Kinetics, Characteristics, and Adsorption Dynamics

A Review of Non-Soil Biochar Applications

Macadamia Nutshell Biochar for Nitrate Removal: Effect of Biochar Preparation and Process Parameters

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Removal of nitrate from aqueous solution by modified sugarcane bagasse biochar

Cited by 195 publications

References 66 publications

Adsorption of Nitrate onto ZnCl2-Modified Coconut Granular Activated Carbon: Kinetics, Characteristics, and Adsorption Dynamics

Adsorption of Nitrate onto ZnCl2-Modified Coconut Granular Activated Carbon: Kinetics, Characteristics, and Adsorption Dynamics

A Review of Non-Soil Biochar Applications

Macadamia Nutshell Biochar for Nitrate Removal: Effect of Biochar Preparation and Process Parameters

Contact Info

Product

Resources

About

Adsorption of Nitrate onto ZnCl₂-Modified Coconut Granular Activated Carbon: Kinetics, Characteristics, and Adsorption Dynamics

Adsorption of Nitrate onto ZnCl₂-Modified Coconut Granular Activated Carbon: Kinetics, Characteristics, and Adsorption Dynamics