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Modified Biochar—A Tool for Wastewater Treatment

Author

Listed:
  • Marek Kopecký

    (Faculty of Agriculture, University of South Bohemia in Ceske Budejovice, Studentska 1668, 370 05 Ceske Budejovice, Czech Republic)

  • Ladislav Kolář

    (Faculty of Agriculture, University of South Bohemia in Ceske Budejovice, Studentska 1668, 370 05 Ceske Budejovice, Czech Republic
    Faculty of Technology, Insitute of Technology and Business in Ceske Budejovice, Okruzni 10, 370 01 Ceske Budejovice, Czech Republic)

  • Petr Konvalina

    (Faculty of Agriculture, University of South Bohemia in Ceske Budejovice, Studentska 1668, 370 05 Ceske Budejovice, Czech Republic)

  • Otakar Strunecký

    (Faculty of Science, University of South Bohemia in Ceske Budejovice, Branisovska 1760, 370 05 Ceske Budejovice, Czech Republic)

  • Florina Teodorescu

    (Costin D. Nenitescu Organic Chemistry Center of the Romanian Academy, Splaiul Independentei 202B, RO-060023 Bucharest, Romania)

  • Petr Mráz

    (Faculty of Agriculture, University of South Bohemia in Ceske Budejovice, Studentska 1668, 370 05 Ceske Budejovice, Czech Republic)

  • Jiří Peterka

    (Faculty of Agriculture, University of South Bohemia in Ceske Budejovice, Studentska 1668, 370 05 Ceske Budejovice, Czech Republic)

  • Radka Váchalová

    (Faculty of Agriculture, University of South Bohemia in Ceske Budejovice, Studentska 1668, 370 05 Ceske Budejovice, Czech Republic)

  • Jaroslav Bernas

    (Faculty of Agriculture, University of South Bohemia in Ceske Budejovice, Studentska 1668, 370 05 Ceske Budejovice, Czech Republic)

  • Petr Bartoš

    (Faculty of Agriculture, University of South Bohemia in Ceske Budejovice, Studentska 1668, 370 05 Ceske Budejovice, Czech Republic)

  • Feodor Filipov

    (Department of Pedotechnics, Faculty of Agriculture, University of Agricultural Sciences and Veterinary Medicine in Iasi, 3, Mihail Sadoveanu Alley, 700490 Iasi, Romania)

  • Daniel Bucur

    (Department of Pedotechnics, Faculty of Agriculture, University of Agricultural Sciences and Veterinary Medicine in Iasi, 3, Mihail Sadoveanu Alley, 700490 Iasi, Romania)

Abstract

Global deposits of concentrated phosphates, which are a necessary source for the production of phosphate fertilizers, are limited. These reserves keep getting thinner, and every day, large amounts of phosphorus end up in watercourses. In this study, we verified that modified biochar (saturated with FeCl 3 solution and then neutralized with NaOH solution) can adsorb significant amounts of phosphorus from wastewater. Moreover, the agrochemical qualities of sludge water from a municipal wastewater treatment plant, struvite, phosphorus-saturated biochar, and iron(III) phosphate from a reused biochar filter were tested in this study. We determined the amount of mobile phosphorus as well as the amount of extractable phosphorus and its five fractions. It was found that modified biochar can hold one-third of the phosphorus amount contained in the commonly used agricultural fertilizer simple superphosphate (1 × 10 5 g of modified biochar captures up to 2.79 × 10 3 g of P). Moreover, plants can more easily access phosphorus biochar fractions than struvite, which is formed spontaneously during sludge management. The results of this research prove that the proposed method of recycling phosphorus from wastewater can be applied in technological practice.

Suggested Citation

  • Marek Kopecký & Ladislav Kolář & Petr Konvalina & Otakar Strunecký & Florina Teodorescu & Petr Mráz & Jiří Peterka & Radka Váchalová & Jaroslav Bernas & Petr Bartoš & Feodor Filipov & Daniel Bucur, 2020. "Modified Biochar—A Tool for Wastewater Treatment," Energies, MDPI, vol. 13(20), pages 1-13, October.
    • Handle: RePEc:gam:jeners:v:13:y:2020:i:20:p:5270-:d:426172
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    References listed on IDEAS

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    1. Dana Cordell & Stuart White, 2011. "Peak Phosphorus: Clarifying the Key Issues of a Vigorous Debate about Long-Term Phosphorus Security," Sustainability, MDPI, vol. 3(10), pages 1-23, October.
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