Pyrolyzed sewage sludge for sustainable brownfield reclamation

Bc. Daniela Casadiego Hernandez

Diplomová práce

Abstract:

The following study investigates the effect of the application of pyrolyzed sewage sludge (PSS) for the sustainable remediation of contaminated soils. The main goal is the assessment of five PSS materials regarding their efficiency for metal and metalloid remediation in soils. The methodology includes laboratory experiments with five contaminated soils from distinct locations in the Czech Republic amended with pyrolyzed sewage sludge. Using standardized leaching in water and other soil extractions the concentrations of toxic metals and metalloids were identified and the immobilization efficiency of PSS was estimated. The results have shown that all the used PSS amendments showed some immobilization efficiency for the toxic metals, As, and Sb. Additionally, the samples with pyrolyzed sewage sludge occasionally showed higher pH values than the control samples which was a secondary positive effect. This study demonstrates the benefits and risks of using different PSS to immobilize toxic metals, As and Sb giving information for future remediation decisions. However, further investigation is needed to reach more conclusive results such as the PSS efficiency for metal(loid) immobilization in the field.

Keywords

pyrolyzed sewage sludge, toxic metals, soil remediation, Sewage sludge

Jazyk práce: angličtina

Datum vytvoření / odevzdání či podání práce: 30. 3. 2024

Obhajoba závěrečné práce

• Obhajoba proběhla 20. 5. 2024
• Vedoucí: doc. Mgr. Martina Vítková, Ph.D.
• Oponent: Filip Mercl, Ph.D.

Česká zemědělská univerzita v Praze

Fakulta životního prostředí

Magisterský studijní program:
Environmental Geosciences