Adsorption of methylene blue using biochar, soil and treated soil with biochar from aqueous solutions

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NABIZADEH S.; SADEGH ZADEH F.; JALILI B.; EMADI S.M.

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Journal: Journal of Water and Soil Conservation Year:2019 | Volume:25 | Issue:6 Page(s): 281-292

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Title

Adsorption of methylene blue using biochar, soil and treated soil with biochar from aqueous solutions

Author(s)

NABIZADEH S. | SADEGH ZADEH F. | JALILI B. | EMADI S.M. | Issue Writer Certificate

Keywords

IsothermQ2

PollutionQ1

Rice straw biocharQ1

WastewaterQ1

Abstract

Background and Objectives: Industrial dyes are one of the largest organic compounds which have extensive application in different industries. due to the complex aromatic structure and artificially producing process, they are stable compounds in the environments and are resistant to the disappearance. Wastewaters contain dyes induces the surface and subsurface Pollution. If these Wastewaters discharge without remediation into environment, they can impose irreparable damage to the environments. Therefore, it is necessary to reclaim Wastewaters and contaminated soil by using reliable methods. Among the suitable methods for removing dyes, adsorption is the appropriate technique for dye removal. Materials and Methods: In this study, the effect of Rice straw biochar (RSB) which is produced at 600˚ C, soil and mixture of soil and biochar on methylene blue adsorption from aqueous environments was investigated. This biochar was chosen because, it had the highest adsorption capacity among all other adsorbents (dicer woodchips, sugarcane bagass, rice husk and rice straw) which was prepared in two different temperatures. First, rice straw was turned to biochar at 600˚ C. Then biochar was mixed with sandy soil which was taken from alluvial plains of Tajan area of Sari, Mazandaran province at ratios 1, 2. 5 and 5 (w/w). Methylene blue dye solution was prepared from methylene blue powder, and 40 mL of solution with concentrations of 30-300 mg/L and pH=7 was added to 0. 1 g biochar, soil and mixture of soil and biochar and finally, methylene blue sorption Isotherms were determined for biochar, soil and mixture of soil an d biochar. Experiments were performed in a completely randomized design with three replications. Results: The results of fitting the data to the Langmuir and Freundlich Isotherm model showed that methylene blue adsorption on the RSB produced at 600˚ C, soil and mixture of soil and biochar matches with the Langmuir Isotherm model. Biochar, mixture of biochar and soil and soil had the maximum adsorption capacities with amounts of 27. 85, 3. 272 and 17. 953 mg/g, respectively. Due to biochar high specific surface area, high cation exchange capacity and the presence of functional groups, it had a high adsorption of methylene blue. Conclusion: In general, the results showed that methylene blue adsorption Isotherms by the biochar, soil and mixture of soil and biochar were L-shaped and there was a high affinity for absorption. Results also showed that incorporation of biochar to soil enhanced the adsorption capacity of soil, thus it can be concluded that RSB could improve methylene blue adsorption in soil environment.

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APA: Copy

NABIZADEH, S., SADEGH ZADEH, F., JALILI, B., & EMADI, S.M.. (2019). Adsorption of methylene blue using biochar, soil and treated soil with biochar from aqueous solutions. JOURNAL OF WATER AND SOIL CONSERVATION (JOURNAL OF AGRICULTURAL SCIENCES AND NATURAL RESOURCES), 25(6 ), 281-292. SID. https://sid.ir/paper/156429/en

Vancouver: Copy

NABIZADEH S., SADEGH ZADEH F., JALILI B., EMADI S.M.. Adsorption of methylene blue using biochar, soil and treated soil with biochar from aqueous solutions. JOURNAL OF WATER AND SOIL CONSERVATION (JOURNAL OF AGRICULTURAL SCIENCES AND NATURAL RESOURCES)[Internet]. 2019;25(6 ):281-292. Available from: https://sid.ir/paper/156429/en

IEEE: Copy

S. NABIZADEH, F. SADEGH ZADEH, B. JALILI, and S.M. EMADI, “Adsorption of methylene blue using biochar, soil and treated soil with biochar from aqueous solutions,” JOURNAL OF WATER AND SOIL CONSERVATION (JOURNAL OF AGRICULTURAL SCIENCES AND NATURAL RESOURCES), vol. 25, no. 6 , pp. 281–292, 2019, [Online]. Available: https://sid.ir/paper/156429/en

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