Valorizing lignite waste into engineered nitro-humic fertilizer: Advancing resource efficiency in the era of a circular economy

Sarlaki, Ehsan; Kianmehr, Mohammad Hossein; Kermani, Ali-mashaallah; Ghorbani, Marzieh; Ghorbani Javid, Majid; Rezaei, Meisam; Peng, Wanxi; Lam, Su Shiung; Tabatabaei, Meisam; Aghbashlo, Mortaza; Chen, Xiangmeng

doi:10.1016/j.scp.2023.101283

Cited by 5 publications

(2 citation statements)

References 63 publications

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“…As an amide enzyme, urease is positively correlated with the number of soil microorganisms [31], Li et al also showed that urease is positively correlated with the number of soil microorganisms. organic matter content [32], total nitrogen, and available nitrogen content [33], and its activity often represents the nitrogen status of the soil [34]. This result is consistent with previous studies.…”

Section: Effects Of Different Treatments On Soil Enzyme Activitysupporting

confidence: 92%

Iminodisuccinic Acid and 28-Epihomobrassinolide Promoted the Accumulation of Cadmium in Black Nightshade (<i>Solanum Nigrum</i> L.) and Its Response Mechanism

Wang,

Hu,

Dong

et al. 2024

Pol. J. Environ. Stud.

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Black nightshade was used as a test material to study the effects of chelating agents and plant growth regulators on Cd accumulation in black nightshade and its response mechanism. Pot experiments were used to study iminodisuccinic acid and 28-epigenolide and the effects of BR alone and in combination application on Cd accumulation and antioxidant system and soil enzyme activities in black nightshade. The results showed: with the increase in iminodisuccinic acid concentration, the growth inhibition of black nightshade was stronger, and the content of weak acid and reducible Cd in soil increased, while 28-epigalassinolide could alleviate the stress effect of iminodisuccinic acid on the growth of black nightshade; Iminodisuccinic acid decreased the activities of CAT and SOD and increased the activity of POD in leaves of black nightshade, while 28-epigalassinolide could alleviate the oxidative stress effect of black nightshade; With the increase of iminodisuccinic acid concentration, soil catalase activities and sucrase activities decreased, while urease activities increased, while 28-epigenolide could increase soil catalase activities and sucrase activities; Treatment with 5 mmol/L iminodisuccinic acid and 0.02 mg/L 28-epicolinolide could increase the accumulation of Cd in the shoot of black nightshade, which was an effective measure for remediation of Cd contaminated soil.

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Section: Effects Of Different Treatments On Soil Enzyme Activitysupporting

confidence: 92%

Iminodisuccinic Acid and 28-Epihomobrassinolide Promoted the Accumulation of Cadmium in Black Nightshade (<i>Solanum Nigrum</i> L.) and Its Response Mechanism

Wang,

Hu,

Dong

et al. 2024

Pol. J. Environ. Stud.

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“…Consequently, there is a growing reliance on chemical fertilizers, which now account for over 70% of agricultural and food production (Rodríguez-Espinosa et al, 2023). The main drawbacks of chemical nitrogenous fertilizers include low nitrogen use efficiency by plants (less than 30%), high emissions of greenhouse gases, high production costs, and negative impacts on soil organic matter content, microbial population, and diversity (Sarlaki et al, 2023b). Farmers are ramping up their agricultural activities and relying heavily on chemical fertilizers to boost their income from farming without considering the negative impact on the environment.…”

Section: Introductionmentioning

confidence: 99%

Lime-assisted hydrothermal humification and carbonization of sugar beet pulp: Unveiling the yield, quality, and phytotoxicity of products

Ghaslani,

Rezaee,

Aboubakri

et al. 2024

Biofuel Res. J.

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Hydrothermal carbonization (HTC) solid and liquid products may inhibit seed germination, necessitating post-treatment. The hydrothermal humification (HTH) method addresses this drawback by transforming inhibitory compounds, such as aromatics, into artificial humic acids (AHAs) and artificial fulvic acids (AFAs). This study introduces a novel approach by investigating the substitution of the commonly used alkaline agent in HTH, KOH, with hydrated lime to develop cost-effective hydrothermal fertilizers from sugar beet pulp, enriching them with AHAs. It assesses the effects of lime on AHA production and soluble organic compounds compared to KOH. The results indicate that lime significantly reduces furans (from 560 to 3.15 mg/kg DM in solid and from 344 to 3.86 mg/L in process liquid) and boosts sugars and organic acids, especially lactic acid (from 4.70 to 65.82 g/kg DM in solid and from 4.05 to 22.89 mg/L in process liquid), increasing hydrochar yield (68.8% with lime vs. 27.4% with KOH). Despite the lower AHA production with lime compared to KOH (3.47% vs. 15.50%), lime-treated hydrothermal products are abundant in calcium and magnesium, boasting a pH of 7. This property presents a safer and more efficient alternative to hydrothermal fertilizers. The characterization of AHAs aligns with standard and natural humic substances, while lime-assisted HTH products, applied at a level of 0.01% w/w, could significantly enhance wheat growth and nutrient uptake compared to the control group. Importantly, these products show no toxicity on Daphnia magna, underscoring their potential for sustainable agriculture.

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Maximizing the value of liquid products and minimizing carbon loss in hydrothermal processing of biomass: an evolution from carbonization to humification

Marzban,

Libra,

Rotter

et al. 2024

Biochar

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Hydrothermal carbonization (HTC) converts wet biomass into hydrochar and a process liquid, but aromatic compounds in the products have been reported as a roadblock for soil applications as they can inhibit germination, plant growth, and soil microbial activity. Here, we compared HTC and hydrothermal humification (HTH) of cow manure digestate while varying the initial alkaline content by adding KOH. HTH converted 37.5 wt% of the feedstock to artificial humic acids (A-HAs) found in both solid and liquid, twice that of HTC. HTH reduced phenolic and furanic aromatic compounds by over 70% in solids and 90% in liquids. The A-HAs in HTH resemble natural humic acids (N-HA), based on FTIR, UV–vis spectra, and CHN and XRD analysis. The HTH liquid possesses 60% higher total organic carbon (TOC) than HTC. Although one-third of TOC can be precipitated as A-HA, a high TOC concentration remains in the liquid, which is shown to be mainly organic acids. Therefore, we also evaluated the HTC and HTH liquids for anaerobic biomethane production, and found that compared to the original cow manure digestate, the HTH liquids increased methane yield by 110.3 to 158.6%, a significant enhancement relative to the 17.2% increase seen with HTC liquid. The strong reduction in organic acids during biogas production from HTH liquid indicates the potential for converting soluble byproducts into methane, while maintaining high A-HAs levels in the solid product. Graphical Abstract

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Valorizing lignite waste into engineered nitro-humic fertilizer: Advancing resource efficiency in the era of a circular economy

Cited by 5 publications

References 63 publications

Iminodisuccinic Acid and 28-Epihomobrassinolide Promoted the Accumulation of Cadmium in Black Nightshade (<i>Solanum Nigrum</i> L.) and Its Response Mechanism

Iminodisuccinic Acid and 28-Epihomobrassinolide Promoted the Accumulation of Cadmium in Black Nightshade (<i>Solanum Nigrum</i> L.) and Its Response Mechanism

Lime-assisted hydrothermal humification and carbonization of sugar beet pulp: Unveiling the yield, quality, and phytotoxicity of products

Maximizing the value of liquid products and minimizing carbon loss in hydrothermal processing of biomass: an evolution from carbonization to humification

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