Influence of Pyrolysis Conditions on Surface Characteristics and Methylene Blue Adsorption of Biochar Derived from Date Seed Biomass

Mahdi, Zainab; Hanandeh, Ali El; Qian, Yu

doi:10.1007/s12649-016-9714-y

Cited by 80 publications

(41 citation statements)

References 44 publications

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“…Biochars were prepared in the lab from date stones using slow pyrolysis process at terminal temperatures of 450 and 550 o C for 3 h. Detailed description of biochar preparation can be found in our previous works [11,12]. Adsorption studies were carried out using batch adsorption experiments at room temperature.…”

Section: Methodsmentioning

confidence: 99%

Date seed derived biochar for Ni(II) removal from aqueous solutions

2017

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Abstract. The purpose of this study was to investigate the adsorption characteristic of biochars derived from date seed for Ni 2+ ions removal from aqueous solutions. Two biochars were prepared by slow pyrolysis of date seed for 3 h at 450 °C (DSB450) and 550 °C (DSB550). The adsorption of Ni 2+ was carried out by batch experiments at room temperature. The effects of pyrolysis temperature, contact time, initial metal concentration, and solution pH were investigated. The results showed that biochar prepared at higher temperature (DSB550) had higher adsorption capacity of Ni 2+ from aqueous solution than biochar prepared at lower temperature (DBS450). Adsorption efficiency of Ni 2+ ions was pH dependent and the maximum adsorption was found to occur at pH around 6.0. To describe the equilibrium isotherms, the experimental results were analyzed by the Langmuir, and Freundlich isotherms. The adsorption isotherm for Ni 2+ by DSB550 was best fit to Langmuir isotherm with (R 2 = 0.94). The maximum adsorption capacity of Ni 2+ of DSB550 biochar was 0.609 mmol g í1 . Pseudo-first order, pseudo-second order, and intraparticle diffusion models were used to model the kinetic parameters and mechanism of adsorption process. The results showed that the adsorption kinetics of these biochars are well described by a pseudo-second order kinetic model with correlation coefficient (R 2 = 0.99). The results of the study indicated that biochar derived from date seed biomass is a suitable material for adsorption of Ni 2+ ion from aqueous solution.

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Section: Methodsmentioning

confidence: 99%

Date seed derived biochar for Ni(II) removal from aqueous solutions

2017

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“…Different types of biomass yield BC of different characterization, but for most of the feedstock materials, a general rule applies-with an increase of pyrolysis temperature, the obtained BC is characterized by higher C content, energy content, porosity and surface area with lower O and H content, and lower BC bulk density [3]. An increase of pyrolysis time increases C content and surface area of BC [4].…”

Section: Introductionmentioning

confidence: 99%

A Review of Biochar Properties and Their Utilization in Crop Agriculture and Livestock Production

2019

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When it comes to the use of biochar in agriculture, the majority of research conducted in the last decade has focused on its application as a soil amendment and for soil remediation. This treatment improves soil quality, increases crops yields, and sequestrates atmospheric carbon to the soil. Another widely studied aspect connecting biochar with agriculture is the composting processes of various agricultural waste with the addition of biochar. Obtaining the material via the pyrolysis of agricultural waste, including animal manure, has also been investigated. However, given the remarkable properties of biochar, its application potential could be utilized in other areas not yet thoroughly investigated. This review paper summarizes the last decade of research on biochar and its use in crop agriculture and livestock production. Knowledge gaps are highlighted, such as using biochar for the mitigation of odorous emissions from animal manure and by feeding the biochar to animals.

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“…The equilibrium capacity to adsorb MB for corncob biochar is described by an adsorption isotherm, describing the ratio of MB adsorbed and that which remains in solution at equilibrium, at a fixed temperature [23,24]. In this study, the MB dye adsorption was measured at optimum conditions, at 25°C.…”

Section: Adsorption Isotherm Studymentioning

confidence: 99%

Facile synthesis of corncob biochar via in-house modified pyrolysis for removal of methylene blue in wastewater

Suwunwong

Hussain

Chantrapromma

et al. 2020

Mater. Res. Express

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Low-cost biochar was derived from corncob Zea mays L. cultivated in Northern Thailand for animal feed by facile synthesis with in-house modified pyrolysis for 2 h at ∼500°C, ∼10°C min −1 heating rate. Fixed-carbon, ash, %CHNSO and volatile contents of biochar were characterized and compared with pristine biomass. Thermal analysis was performed to monitor the transition of corncob biomass to biochar under the pyrolysis conditions. The physicochemical properties of biochar were investigated by scanning electron microscopy and FT-IR analysis, indicated honeycomb structure on the biochar surface with cylindrical pores and various functional groups, such as carbonyl and phenolic groups. Methylene blue adsorption in aqueous solution by biochar was studied at 25°C. Without any chemical activation on biochar, the maximum removal efficiency of methylene blue by biochar was 16.50 mg g −1 . Effect of the initial concentration and the contact time on removal of methylene blue was studied to archive optimal conditions. The equilibrium adsorption of methylene blue on the biochar was well fit by the Langmuir isotherm. Kinetic of adsorption was perfectly fit by a pseudo-second order dynamic model. The results suggest low-cost corncob biochar prepared by inhouse modified pyrolysis could be utilized in wastewater treatment. List of abbreviationsBET Brunauer-Emmett-Teller C 0 Initial dye concentration (mg l −1 ) C e Equilibrium concentration of dye (mg l −1 ) EIA Environmental impact assessment q e Sorbed dye amount per gram of sorbent at equilibrium (mg g −1 ) q e,cal Calculated amount of dye sorbed per gram of sorbent at equilibrium (mg g −1 ) q e,exp Experimental amount of dye sorbed per gram of sorbent at equilibrium (mg g −1 )qt Sorbed dye amount per gram of sorbent at time t (mg g −1 )K L Langmuir isotherm equilibrium constant representing the energy of sorption (L mg −1 ) K F Freundlich constant representing sorption capacity ((mg g −1 ) (L mg −1 ) n −1 ) k 1 Pseudo-first order rate constant (1 min −1 ) k 2 Pseudo-second order rate constant (g mg −1 min −1 ) MB Methylene blueOPEN ACCESS

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Influence of Pyrolysis Conditions on Surface Characteristics and Methylene Blue Adsorption of Biochar Derived from Date Seed Biomass

Cited by 80 publications

References 44 publications

Date seed derived biochar for Ni(II) removal from aqueous solutions

Date seed derived biochar for Ni(II) removal from aqueous solutions

A Review of Biochar Properties and Their Utilization in Crop Agriculture and Livestock Production

Facile synthesis of corncob biochar via in-house modified pyrolysis for removal of methylene blue in wastewater

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