0599419 - ÚCHP 2025 IT eng A - Abstract
Morávková, Lenka - Dlasková, Martina - Kaštánek, František - Šolcová, Olga
Farmland from brownfields by animal waste hydrolysate.
Proceedings SIDISA 2024. Palermo: Universita degli studi di Palermo, 2024. s. 875-877. ISBN N.
[International Symposium on Environmental Engineering – SIDISA 2024 /12./. 01.10.2024-04.10.2024, Palermo]
R&D Projects: GA TA ČR(CZ) TN02000044
Grant - others:AV ČR(CZ) StrategieAV21/19
Program: StrategieAV
Institutional support: RVO:67985858
Keywords : soil contamination * brownfields * heavy metal contamination * animal waste hydrolysate
OECD category: Environmental sciences (social aspects to be 5.7)

Metal contamination of soils is one of the phenomena which have a negative impact on human health. Therefore, a hydrolysate obtained by thermal pressure hydrolysis of animal wastes (poultry feathers) was applied as a chelating agent for the leaching of heavy metals from brownfields - industrial soils contaminated with heavy metals after years of metallurgical and coking activities.
Hydrolysates were prepared in a stainless steel stirred 25 l autoclave in a weakly acidic environment (malic acid) at the temperature of 140 °C for 5 h at inert atmosphere. 2 kg of waste frozen material was placed in 15 l of water with 100 g of malic acid added. The composition of the hydrolysate is a set of amino acids with predominantly aspartic acid, peptides, proteins and water. The amount of amino acids represented 5-8 g/l, and the sum of peptides and proteins up to 40 g/l. The representation of individual amino acids is shown in the Fig. 1.

Permanent Link: https://hdl.handle.net/11104/0356880