Characterization of humic acids in a continuous-feeding vermicomposting system with horse manure

Hanč, Aleš; Enev, Vojtěch; Hřebečková, Tereza; Klučáková, Martina; Pekař, Miloslav

doi:10.1016/j.wasman.2019.08.032

Cited by 34 publications

(19 citation statements)

References 54 publications

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“…While this band is again apparently absent in the spectrum of TCM1, its relative intensity is comparable for all other fractions; (c) Out-of-plane C-H deformation bands were found in the 870-750 cm −1 region. The position of these peaks is used as a specific marker of the type of substitution of the aromatics, as far as it can distinguish aromatic structures with isolated hydrogens with aromatic carbon (870 cm −1 ), two and/or three adjacent hydrogens per ring (845 cm −1 and 800 cm −1 ), and four adjacent hydrogens (770 cm −1 and 750 cm −1 ) [41,44]. Spectral bands that can be assigned to two and more adjacent aromatic hydrogens are apparent in the spectra of all fractions except for TCM1 (see Figure 1b), di-substituted aromatic rings being prevailing in fractions ACE3 and MET6 while tri-and/or tetra-substituted aromatic rings in EAC2, PRO5, and MET6.…”

Section: Atr-ftir Spectrometrymentioning

confidence: 99%

Polarity-Based Sequential Extraction as a Simple Tool to Reveal the Structural Complexity of Humic Acids

et al. 2021

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A sequential chemical extraction with a defined series of eluotropic organic solvents with an increasing polarity (trichloromethane < ethyl acetate < acetone < acetonitrile < n-propanol < methanol) was performed on peat-bog humic acid. Six organic fractions were obtained and subjected to a physicochemical characterization utilizing methods of structural and compositional analysis. Advanced spectroscopic techniques such as Attenuated Total Reflectance (ATR-FTIR), total luminescence, and liquid-state 13C NMR spectrometry were combined with elemental analysis of the organic fractions. In total, the procedure extracted about 57% (wt.) of the initial material; the individual fractions amounted from 1.1% to 19.7%. As expected, the apolar solvents preferentially released lipid-like components, while polar solvents provided organic fractions rich in oxygen-containing polar groups with structural parameters closer to the original humic material. The fraction extracted with acetonitrile shows distinct structural features with its lower aromaticity and high content of protein-like structural motifs. The last two—alcohol extracted—fractions show the higher content of carbohydrate residues and their specific (V-type) fluorescence suggests the presence of plant pigment residues. The extraction procedure is suggested for further studies as a simple but effective way to decrease the structural complexity of a humic material enabling its detail and more conclusive compositional characterization.

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Section: Atr-ftir Spectrometrymentioning

confidence: 99%

Polarity-Based Sequential Extraction as a Simple Tool to Reveal the Structural Complexity of Humic Acids

et al. 2021

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“…El incremento en los parámetros morfológicos del chile dulce con B. subtilis y lombricomposta se podría deber principalmente a dos factores; el primero de ellos al contenido del abono orgánico en macro y micronutrientes (Maji et al, 2017) y reguladores del crecimiento (como auxinas, giberelinas, citoquininas, ácido fúlvico y húmico) (Goswami et al, 2017;Ravindran et al, 2019) que son utilizados por las plantas como fuente de energía o en sus procesos de división y elongación celular, entre otros (Hanc et al, 2019). Además, con la aplicación de lombricomposta se mejora el enraizamiento de las plantas, la estructura del suelo, aireación, retención de agua y promueve la actividad microbiana (Zhao et al, 2017;Gupta et al, The increase in morphological parameters of bell pepper with B. subtilis and vermicompost may be due mainly to two factors.…”

Section: Morphologic Parametersunclassified

“…Además, con la aplicación de lombricomposta se mejora el enraizamiento de las plantas, la estructura del suelo, aireación, retención de agua y promueve la actividad microbiana (Zhao et al, 2017;Gupta et al, The increase in morphological parameters of bell pepper with B. subtilis and vermicompost may be due mainly to two factors. The f irst one would be the content of the organic manure in macro and micronutrients (Maji et al, 2017) and growth promoters, such as auxins, gibberellins, cytokins, fulvic and humic acids (Goswami et al, 2017;Ravindran et al, 2019), which are used by the plants as energy sources or in their cell division and elongation processes, among others (Hanc et al, 2019). Furthermore, the application of vermicompost improves plant rooting, aeriation, water retention, and promotes microbial activity (Zhao et al, 2017;Gupta et al, 2019), mainly that of the PGPB (Viti et al, 2010;Espinosa-Palomeque et al, 2017).…”

Section: Morphologic Parametersmentioning

confidence: 99%

Respuesta agronómica del chile dulce (Capsicum annuum L.) a la aplicación de Bacillus subtilis y lombricomposta en invernadero

Lara-Capistrán

Zulueta-Rodríguez

Murillo-Amador

et al. 2020

Terra

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El uso de agroquímicos en el cultivo de chile dulce ha originado la búsqueda de alternativas de fertilización como Bacillus subtilis y lombricomposta, los cuales, son una opción para producir alimentos sin afectar al ambiente, salud humana y animal. El objetivo de este estudio fue evaluar el efecto de la incorporación individual y en conjunto de B. subtilis y lombricomposta sobre la respuesta agronómica de chile dulce bajo invernadero. Se utilizó un diseño completamente al azar con 15 repeticiones por cada tratamiento donde; T1 = plantas con fertilizante químico; T2 = B. subtilis; T3 = B. subtilis + fertilizante químico; T4, T5 y T6 = 280, 380 y 570 g de lombricomposta, respectivamente; T7, T8 y T9 = B. subtilis + 280, 380 y 570 g de lombricomposta, respectivamente. A los 90 días después de la siembra se evaluó: altura, diámetro del tallo, número de hojas, número de botones, número de flores, área foliar, producción de fruto y población bacteriana (UFC). Las plantas de chile dulce con la dosis más alta de lombricomposta (570 g) más B. subtilis presentaron los mayores incrementos en todas las variables evaluadas superando signif icativamente a las plantas con fertilizante químico. La aplicación en conjunto de lombricomposta y B. subtilis puede ser una alternativa para la producción de chile dulce sin tener que emplear fertilizantes químicos.

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“…Previous work on horse dung humic acid (HDHA) showed that the material has good removal uptake towards toxic heavy metal pollutants in water [36][37][38]. Therefore, it is fair to conduct further studies on the material.…”

Section: Introductionmentioning

confidence: 99%

Magnetite-Functionalized Horse Dung Humic Acid (HDHA) for the Uptake of Toxic Lead(II) from Artificial Wastewater

Rahmat

Rusdiarso

Santosa

et al. 2021

Adsorption Science & Technology

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Magnetite-functionalized horse dung humic acid (HDHA) has been successfully prepared by the coprecipitation method, and the as-prepared adsorbent (MHDHA) has been applied as an easy-handling adsorbent for toxic Pb(II) in artificial wastewater. The MHDHA was characterized by Fourier transform-infrared spectroscopy (FT-IR), X-ray powder diffraction (XRD), transmission electron microscopy (TEM), energy dispersive X-ray (EDX), and vibrating sample magnetometer (VSM). The FT-IR study showed that the MHDHA had the characteristics peaks of HA and Fe-O stretching. The XRD analysis revealed that the MHDHA had the 2 θ characteristic for magnetite. The TEM image and EDX analysis exhibited that the MHDHA with an average size of ∼14 nm was partially aggregated and contained ( w / w ) 9.89% carbon, 2.89% nitrogen, and 32.74% oxygen based on functional groups of HDHA. The stability improvement of MHDHA was showed by decreasing HDHA dissolved from 95% to less than 30% at pH 12 after magnetite functionalization. The post-adsorption handling improvement was evidenced by easy and quick retraction by an external magnet with a 62.95 emu/g magnetic strength value. The adsorption capacities were influenced by the pH and ionic strength, whilst the adsorption rates were well simulated by the Ho pseudo-second-order model. The removal uptake of Pb(II) ions increased when the initial concentration was increased and fitted well with the Langmuir isotherm model when the monolayer adsorption capacity was 2.78 × 10 − 4 mol / g (equal to 57.64 mg/g). The value of Dubinin-Radushkevich adsorption energy ( E D − R ) found in this study was 14.78 kJ/mol, which implied that ion exchange is the main mechanism involved in the adsorption process. The regeneration studies of MHDHA show that there was no significant change in composition, morphology, crystallinity, and functional group after five consecutive cycles of the adsorption-desorption process.

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Characterization of humic acids in a continuous-feeding vermicomposting system with horse manure

Cited by 34 publications

References 54 publications

Polarity-Based Sequential Extraction as a Simple Tool to Reveal the Structural Complexity of Humic Acids

Polarity-Based Sequential Extraction as a Simple Tool to Reveal the Structural Complexity of Humic Acids

Respuesta agronómica del chile dulce (Capsicum annuum L.) a la aplicación de Bacillus subtilis y lombricomposta en invernadero

Magnetite-Functionalized Horse Dung Humic Acid (HDHA) for the Uptake of Toxic Lead(II) from Artificial Wastewater

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