New biochars from raspberry and potato stems absorb more methane than wood offcuts and sunflower husk biochars

Abstract

The reduction in greenhouse gas emissions from agriculture is of particular importance at present. In recent times, biochar addition to the soil was suggested as a means of mitigating greenhouse gases emissions from arable fields. More specifically, biochars with useful properties and those produced from easily available waste materials are still being sought. In the presented experiment, the CH 4 absorption potential of four biochars incubated at 60 and 100% water holding capacity with the addition of 1% CH 4 (v/v) was investigated for 28 days at 25 o C. The potato stem and raspberry stem biochars showed much higher potentials for CH 4 uptake than wood offcuts biochar and sunflower husk biochar. Potato stem and raspberry stem biochars incubated at 60% water holding capacity were characterized by a methane uptake rate of 8.01 ± 0.47 and 5.78 ± 0.17 mg CH 4-C kg-1 d-1 , respectively. The methane removal potentials of the other biochars were clearly lower. The advantage of the biochars from raspberry and potato stems over the wood offcuts biochar also results from their significantly lower production of carbon dioxide. Consequently, these materials have a high potential for agricultural use, in view of their impact on the greenhouse gas balance of the soil. K e y w o r d s: biochar, methane, greenhouse gas removal, raspberry stems, potato stems

Feasibility of Biochar Derived from Sewage Sludge to Promote Sustainable Agriculture and Mitigate GHG Emissions—A Review

“…SSB affects soil properties, e.g., increasing pH, C, N, P, K, and water retention (Table 2), thus changing the conditions for microbial activity. Improved aeration may enhance methanotroph activity through increased O 2 and CH 4 diffusion and, consequently, increase CH 4 uptake [120]. By improving CH 4 oxidation, biochar may help to offset GHGs.…”

“…By improving CH 4 oxidation, biochar may help to offset GHGs. The impact of biochar on GHG emissions may be influenced by its properties (e.g., pyrolysis temperature, feedstock, dose), as well as the land use and soil moisture level [57,77,[119][120][121]. Adding biochar reduced CO 2 emissions in non-saturated forest soil and improved CH 4 absorption in saturated soils [121].…”

Production strategies and potential repercussion of sewage sludge biochar as a futuristic paradigm toward environmental beneficiation: A comprehensive review

“…In such a way, biosolids are known to be rich in nutrients and organic matter for crop cultivation for agricultural purposes (Kubaczyński et al., 2022). Hence, in general, biosolids are returned to the soil, where the biosolids are utilized by new crops (Kubaczyński et al., 2020; Selvakumar et al., 2022). In another way, sewage sludge management via composting is also well‐known and extensively applied in forestry, horticulture, and agriculture for supplying nutrients and organic contents (Walkiewicz et al., 2020).…”

Determination of the influence of biostimulants on soil properties and field crop yields

“…A lack of precipitation and soil compaction decreases the biological activity of the soil (Farahani et al, 2022). The production capability of the soil is reduced (Nimmo, 2013) since optimal physical soil properties are associated with intensive soil biological activity (Jakšík et al, 2015;Kubaczyński et al, 2020). Regeneration of the soil structure in terms of improved soil porosity and retention capacity ensures the infiltration of larger amounts of water (Bartlová et al, 2015;Makó et al, 2020;Luan et al, 2021).…”