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Application of Magnesium Modified Corn Biochar for Phosphorus Removal and Recovery from Swine Wastewater

Author

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  • Ci Fang

    (Key Laboratory of Plant-Soil Interactions of Ministry of Education, College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China)

  • Tao Zhang

    (Key Laboratory of Plant-Soil Interactions of Ministry of Education, College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China)

  • Ping Li

    (Key Laboratory of Plant-Soil Interactions of Ministry of Education, College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China)

  • Rong-feng Jiang

    (Key Laboratory of Plant-Soil Interactions of Ministry of Education, College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China)

  • Ying-cai Wang

    (Key Laboratory of Plant-Soil Interactions of Ministry of Education, College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China)

Abstract

The recycling of lost phosphorus (P) is important in sustainable development. In line with this objective, biochar adsorption is a promising method of P recovery. Therefore, our study investigates the efficiency and selectivity of magnesium modified corn biochar (Mg/biochar) in relation to P adsorption. It also examines the available P derived from postsorption Mg/biochar. Mg/biochar is rich in magnesium nanoparticles and organic functional groups, and it can adsorb 90% of the equilibrium amount of P within 30 min. The Mg/biochar P adsorption process is mainly controlled by chemical action. The maximum P adsorption amount of Mg/biochar is 239 mg/g. The Langmuir-Freundlich model fits the P adsorption isotherm best. Thermodynamics calculation shows ∆H > 0, ∆G < 0, ∆S > 0, and it demonstrates the P adsorption process is an endothermic, spontaneous, and increasingly disordered. The optimal pH is 9. The amounts of P adsorbed by Mg/B300, Mg/B450, and Mg/B600 from swine wastewater are lower than that adsorbed from synthetic P wastewater by 6.6%, 4.8%, and 4.2%, respectively. Mg/biochar is more resistant to pH and to the influence of coexisting ions than biochar. Finally, postsorption Mg/biochar can release P persistently. The P release equilibrium concentrations are ordered as follows: Mg/B600 > Mg/B450 > Mg/B300. The postsorption Mg/B300, Mg/B450, and Mg/B600 can release 3.3%, 3.9%, and 4.4% of the total adsorbed P, respectively, per interval time.

Suggested Citation

  • Ci Fang & Tao Zhang & Ping Li & Rong-feng Jiang & Ying-cai Wang, 2014. "Application of Magnesium Modified Corn Biochar for Phosphorus Removal and Recovery from Swine Wastewater," IJERPH, MDPI, vol. 11(9), pages 1-21, September.
    • Handle: RePEc:gam:jijerp:v:11:y:2014:i:9:p:9217-9237:d:39970
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    References listed on IDEAS

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    1. James Elser & Elena Bennett, 2011. "A broken biogeochemical cycle," Nature, Nature, vol. 478(7367), pages 29-31, October.
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    Cited by:

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    2. Jessica K. Hauda & Steven I. Safferman & Ehsan Ghane, 2020. "Adsorption Media for the Removal of Soluble Phosphorus from Subsurface Drainage Water," IJERPH, MDPI, vol. 17(20), pages 1-18, October.
    3. Katarzyna Wystalska & Anna Grosser, 2024. "Sewage Sludge-Derived Biochar and Its Potential for Removal of Ammonium Nitrogen and Phosphorus from Filtrate Generated during Dewatering of Digested Sludge," Energies, MDPI, vol. 17(6), pages 1-19, March.
    4. Jihoon Kang & Jason Parsons & Sampath Gunukula & Dat T. Tran, 2022. "Iron and Magnesium Impregnation of Avocado Seed Biochar for Aqueous Phosphate Removal," Clean Technol., MDPI, vol. 4(3), pages 1-13, July.
    5. Xiaoqi Liu & Jialong Lv, 2023. "Efficient Phosphate Removal from Wastewater by Ca-Laden Biochar Composites Prepared from Eggshell and Peanut Shells: A Comparison of Methods," Sustainability, MDPI, vol. 15(3), pages 1-14, January.
    6. Siyu Xu & De Li & Haixin Guo & Haodong Lu & Mo Qiu & Jirui Yang & Feng Shen, 2022. "Solvent-Free Synthesis of MgO-Modified Biochars for Phosphorus Removal from Wastewater," IJERPH, MDPI, vol. 19(13), pages 1-16, June.
    7. Hongyou Wan & Ruifeng Wang & Beibei Wang & Kehao Zhang & Huanhuan Shi & Hailong Wang, 2022. "A Case Study of Swine Wastewater Treatment via Electrochemical Oxidation by Ti 4 O 7 Anode," IJERPH, MDPI, vol. 19(21), pages 1-11, October.

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