Innovative uses of biochar derived from tannery waste as a soil amendment and fertilizer.

Autor: Skrzypczak, Dawid, Gersz, Aleksandra, Gil, Filip, Izydorczyk, Grzegorz, Mironiuk, Małgorzata, Hoppe, Viktoria, Moustakas, Konstantinos, Lale, Derya, Chojnacka, Katarzyna, Witek-Krowiak, Anna
Zdroj: Biomass Conversion & Biorefinery; Mar2024, Vol. 14 Issue 5, p7057-7073, 17p
Abstrakt: The aim of this study was to obtain a hydrogel coating based on crosslinked alginate enriched with tannery waste-derived biochar and macro- and micronutrients. Sodium alginate (4% wt./wt. and 6% wt./wt.), carboxymethyl cellulose (0.1% wt./wt.), and biochar based on non-chrome waste from the tanning industry (5% wt./wt. and 10% wt./wt.) were used to produce polymeric coatings. The effect of micronutrient concentration (Cu(II), Mn(II), and Zn(II)) in the crosslinking solution on the content of elements in the seed coat was evaluated. SEM–EDS surface analysis showed that the applied method enables/allows uniform coverage of the seeds with the composite. At the same time, the addition of biochar causes significant surface development and slight cracking. The study showed that an alginate coating (6% wt./wt.) with biochar (5% wt./wt.) crosslinked in a 1500 mg/L solution results in a swelling index of 490%. The controlled release of macro- and micronutrients was confirmed in/by in vitro tests. The effectiveness of the coatings was analyzed in germination tests. The addition of biochar was found to have a biostimulatory effect on the growth of the underground parts of the plant (the root length increased by approximately 50% compared to seeds without coating). Seed coating with immobilized biochar can advantageously be commercialized since stimulating early root growth can lead to increased yields. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index
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