Biochar farming: defining economically perspective applications

Maroušek, Josef; Strunecký, Otakar; Stehel, Vojtěch

doi:10.1007/s10098-019-01728-7

Cited by 217 publications

(91 citation statements)

References 63 publications

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“…The increased soil pH and mobility of dissolved silicon after biochar amendment not only reduced Cd(II) availability, but also decreased the Cd(II) uptake and translocation to plants [12][13][14]. Moreover, the soil-improving properties of biochar enabled its transfer into the conventional farming on a large scale in the future [15]. On the contrary, the adsorption capacity of biochar for anions like arsenate (As(V)) was significantly lower than those cationic toxics, mainly due to the negatively charged surface of biochar [16].…”

Section: Introductionmentioning

confidence: 99%

Simultaneous Immobilization of Soil Cd(II) and As(V) by Fe-Modified Biochar

Wang

Zhang

et al. 2020

IJERPH

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Remediation of soil heavy metal by biochar has been extensively studied. However, few studies focused on the role of biochar on the co-immobilization of cadmium (Cd(II)) and arsenate (As(V)) and related soil nutrient availability. Remediation tests were conducted with three types of pristine and ferric trichloride (FeCl3) modified biochar (rice, wheat, and corn straw biochar) in Cd-As co-contaminated soil, with application rates of 1, 5, and 10% (w/w) and the incubation of 1, 7, 10, and 15 days. Using TCLP (Toxicity Characteristic Leaching Procedure) method, 10% of FeCl3 modified corn-straw derived biochar (FCB) had the highest immobilization efficiency of Cd(II) (63.21%) and As(V) (95.10%) after 10 days of the incubation. Iron-modified biochar immobilized higher fractions of water-soluble (F1) and surface-absorbed (F2) metal fractions than pristine biochar. For FCB amendment, Cd was mostly presented in the organic matter (OM) and sulfides associated (F4) and residual (F5) fractions (88.52%), as was found in the Fe-Al (oxides and hydroxides) (F3), F4, and F5 fractions (75.87%). FCB amendment increased soil pH values and available iron contents (p < 0.05), while no changes in soil available phosphorus content (p > 0.05). This study showed that FCB application reduces the environmental mobility of metals in Cd-As contaminated soil, while it also increases soil pH and available nutrient mobility, improving soil environmental quality and reducing remediation costs.

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Section: Introductionmentioning

confidence: 99%

Simultaneous Immobilization of Soil Cd(II) and As(V) by Fe-Modified Biochar

Wang

Zhang

et al. 2020

IJERPH

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“…Within research and activities, there are several works that deal with reducing the impact of human activity on the environment within modern trends in the carbon sequence [59][60][61]. Modern and innovative trends have become an integral part of today, and they are being implemented in almost all aspects of life.…”

Section: Resultsmentioning

confidence: 99%

Analysis of the Energy Balance of Constructions Based on Wood during Their Use in Connection with CO2 Emissions

Švajlenka

Kozlovská

2020

Energies

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In the construction industry, it is the material production phase and the use phase of buildings’ life cycles that represent the greatest environmental burden. The presented research focused on wood constructions during their use phase. The primary objective of the research was to determine the amount of CO2 produced during the operation of specific wood constructions in connection with the energy demand for their heating. A correlation analysis of selected parameters revealed a statistically significant correlation between heating medium type and energy demand for heating (p = −0.5773) and between heating medium type and amount of CO2 produced (p = 0.4796). A more detailed analysis showed that, in terms of the average energy demand for heating, the column constructions were the most efficient among the compared construction systems, regardless of the energy standard. Similar findings were obtained for annual CO2 production in connection with the average energy demand for heating. The only difference was that the panel and log constructions exhibited almost identical parameters, which came as a surprise to some extent. The column constructions turned out to be the most efficient again, regardless of their energy standard. The analysis that focused on the heating medium type revealed statistically significant differences among the heating medium types in energy demand for heating (p < 0.0001). The constructions that used electricity for heating were the most energy-efficient. When the individual characteristics of the different heating media in relation to CO2 production were taken into account, the constructions that were heated using biomass were the least polluting. The constructions heated using electricity and gas showed a significantly greater deviation.

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“…This study can be complemented in the future by testing other perennial grasses such as tall fescue (Festuca arundinacea Schreb.) or native grassland, different tillage techniques (Pearson et al, 2014), and new soil improvers (Marousek et al, 2019) to check the environmental and economic impacts in marginal areas of this wide range of alternatives.…”

Section: Farm Global Warming Potential and Primary Energy Evaluationsmentioning

confidence: 99%

Tall wheatgrass (Thinopyrum ponticum (Podp)) in a real farm context, a sustainable perennial alternative to rye (Secale cereale L.) cultivation in marginal lands

Ciria

Sastre

Carrasco

et al. 2020

Industrial Crops and Products

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In order to face the expected increasing demand of energy crops without creating conflicts of land occupation sustainability, farmers need to find reliable alternatives in marginal agricultural areas where the production of food hardly ever is economically and environmentally sustainable. The purpose of this work was the study of the viability of the introduction of new non-food crops in marginal areas of real farms. This study compares the profit margin and the energy and environmental performance of growing tall wheatgrass, in the marginal area of a rainfed farm versus rye, the annual crop sowed traditionally in the marginal area of the farm. The cited farm owned 300 ha of which about 13% was marginal. The methodology was based on the use of the profit margin of the crops as indicator for the economic assessment and Life Cycle Assessment (LCA) as technique for the energy and the environmental evaluations. Results of the economic analysis showed a slight enhancement of the profit margin for tall wheatgrass (156 €·ha -1 ·y -1 ) compared to rye (145 €·ha -1 ·y -1 ).Environmental LCA was driven by CO 2 fixation due to soil organic matter increase and reduced inputs consumption for tall wheatgrass that produced a Global Warming Potential (GWP) of -1.9 Mg CO 2 eq.·ha -1 ·y -1 versus 1.6 Mg CO 2 eq.·ha -1 ·y -1 obtained for rye. Tall wheatgrass cultivation primary energy consumption was less than 40% of rye's consumption. According to the results achieved it was concluded that tall wheatgrass is better option than rye from the energy and the environmental point of views and slight better option from the economic view.Considering these results, monetarization of the CO 2 eq. reductions of tall wheatgrass compared to rye is essential to improve its profit margin and promote the implantation of this new crop in marginal areas of farms.

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Biochar farming: defining economically perspective applications

Cited by 217 publications

References 63 publications

Simultaneous Immobilization of Soil Cd(II) and As(V) by Fe-Modified Biochar

Simultaneous Immobilization of Soil Cd(II) and As(V) by Fe-Modified Biochar

Analysis of the Energy Balance of Constructions Based on Wood during Their Use in Connection with CO2 Emissions

Tall wheatgrass (Thinopyrum ponticum (Podp)) in a real farm context, a sustainable perennial alternative to rye (Secale cereale L.) cultivation in marginal lands

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