Activation of fulvic acid-like in paper mill effluents using H2O2/TiO2 catalytic oxidation: Characterization and salt stress bioassays

Effective adsorption of crystal violet from aqueous solutions with effective adsorbent: equilibrium, mechanism studies and modeling analysis

“…A new peak at 1422 cm −1 attributed to stretching of -OH bonds in carboxyl groups may be due to increasing the carboxylic groups in the NAJL surface [48]. These results confirmed the activation of AJL powder with H 2 O 2 and NaOH.…”

Effects of controlled-release urea combined with fulvic acid on soil inorganic nitrogen, leaf senescence and yield of cotton

“…It not only increases the effects of seed dressing, root dipping and spraying but also stimulates root absorption 16 . FA can promote seed germination and increase the seedling growth rate, and has a particular promoting effect on the development of the crop root system, which stimulates the seedling to root quickly, grow more secondary roots, and increase the amount of roots, and increases the ability of the crop to absorb water and nutrients 17,18 . The stimulating effect of FA on the aboveground part of crops led to vigorous growth, taller plant height and a strong stem, especially in the early stage, and FA stimulates the physiological metabolism of plant cells when it is absorbed through plant roots, which is manifested in increases in respiration and photosynthesis 19 .…”

Wet Air Oxidation Route for the Synthesis of Organomineral Fertilizers from Synergistic Wastes (Pomace and Kimberlite)

“…70 The significant intensity increase in these peaks after treatments at the higher temperature (240 °C) can be attributed to alkane and aromatic aldehyde group formation, which is an intermediate product in the oxidation reaction and degradation of OM. 87 It was expected that after oxidation treatment, a peak change in the spectra related to the loss of amino, aliphatic, lipid, and polysaccharide character (cellulose and hemicellulose) from the organic residue would be observed, according to a study by Fan et al 73 related to physico-chemical composition changes during composting. Therefore, an increase in the intensity of the aromatic functional group with elevated physico-chemical stability represents lignin, as shown in the sharp peak at 1743 cm −1 assigned to CO bond (Figures S2c and S3d).…”

“…and VSs (30−45%) as recalcitrant OM, with higher thermal stability and complex chemical functional groups inherent of humic-like substances. 87 The strong evidence of humic-like substances generated from partial oxidation of lignocellulosic biomass was probably due to the condensation of intermediate compounds derived from the WAO process since the thermal degradation, hydrolysis, and oxidation of lignocellulosic material fragments into smallermolecular-weight compounds lead to a complex reaction mechanism in this closed system, such as aromatization, polymerization, and deposition onto mineral content, thus avoiding organic degradation 36,98−100 (Scheme 2). In this context, Bramble et al 101 observed the reduction of OM mineralization (i.e., organic carbon) by application of limestone with organic byproducts, another important step to better understand the mechanism that regulates SOM mineralization by mineral phase interactions.…”

“…The soybean results were reinforced by previous research, such as higher plant growth. 88 Moreover, Yao et al 87 found that a balanced supply of fulvic-like substances increased seed germination and seedling growth under saline stress (100 mM NaCl). El hasini et al 108 recommended compost humic acid applications in saline soils mainly due to the carboxylic functional group capability of chelate salt ions (Na + ), although Rady et al 37 mentioned the increase in soil water holding capacity by organic amendments, which also improve soil porosity and favor the leaching of salts.…”