humic acid Articles
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TiO2-assisted photocatalytic degradation of humic acids: effect of copper ions
The present study investigated the removal efficiency of aqueous humic acid solutions by TiO2 photocatalytic degradation in the presence of Cu(II) species. The pseudo-first-order kinetics revealed rate constants as 9.87 × 10−3, 7.19 × 10−3, 3.81 × 10−3 min−1 for Color436, UV254 and TOC, respectively. Comparatively, lower rate constants were attained with respect to photocatalytic degradation of ...
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Influence of humic acid on the uptake of aqueous metals by the killifish Fundulus heteroclitus
The role of humicacids was investigated over a concentration range of 0 to 20 mg L−1 in the uptake of three metals (Cd, Cr, and Hg—as both inorganic Hg [Hg(II)] and methylmercury [MeHg]) and a metalloid (As) from the aqueous phase by the killifish (Fundulusheteroclitus). Cadmium uptake showed no relationship with humic acid concentration, whereas Cr, Hg(II), and MeHg uptake showed an inverse ...
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Sorption of sulfonamide antimicrobial agents to humic acid–clay complexes
Received for publication June 17, 2008. The interaction of sulfonamide antimicrobial agents with smectite clay minerals and humic acid (HA)–clay complexes was investigated in batch experiments to assess the influence of adsorbed humic acid on sulfonamide sorption. Soil HA–clay complexes were produced at HA:clay ratios of 1:5, 1:50, and 1:100 (w/w). Vibrational and electronic spectroscopy ...
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Synthesis of walnut shell modified with titanium dioxide and zinc oxide nanoparticles for efficient removal of humic acid from aqueous solutions
The main aim of this research was to study the efficiency of modified walnut shell with titanium dioxide (TiO2) and zinc oxide (ZnO) in the adsorption of humic acid from aqueous solutions. This experimental study was carried out in a batch condition to determine the effects of factors such as contact time, pH, humic acid concentration, dose of adsorbents (raw walnut shell, modified walnut ...
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Characterisation of humic acid maturation by fluorescence spectroscopy and thermal analysis during composting of olive mill waste
Humic acids isolated from different stages of olive mill waste composting were investigated by Elemental analysis, Fluorescence spectroscopy and by Differential Scanning Calorimetry (DSC). The Elemental composition of these humic acids indicates an increase in aromatic structures during the composting. Indeed, the fluorescence results showed an increase in condensed aromatic ring systems. ...
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Adsorption of humic and fulvic acid on copper surfaces
The presence of natural organic matter (NOM) in drinking water can increase the levels of copper released from copper pipes to water and inhibit the formation of protective deposits such as malachite. Since adsorption of NOM on copper pipes surfaces is believed to be one of mechanisms that explains this phenomenom, the objective of this study was to determine kinetics and the adsorption ...
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Application of generalized linear mixed model to analyze mixture toxicity: Survival of brown trout affected by copper and zinc
Increased concerns about the toxicity of chemical mixtures have led to greater emphasis on analyzing the interactions among the mixture components based on observed effects. The authors applied a generalized linear mixed model (GLMM) to analyze survival of brown trout (Salmo trutta) acutely exposed to metal mixtures that contained copper and zinc. Compared to dominant conventional approaches ...
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Decomposition of carbon-14-labeled organic amendments and humic acids in a long-term field experiment
The stabilization of soil organic matter (SOM) is an important process in the context of global change and is strongly affected by soil use and management. We investigated the mineralization and stabilization of 14C-labeled wheat (Triticum aestivum L.) straw and 14C-labeled farmyard manure under different cropping systems (crop rotation, monoculture, and bare fallow) in a long-term field ...
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Humic Acid Factory - Case Study
Humic acids or humus are black or dark brown substances formed by plant or animal residues that are partially or completely decayed. Humus is a substance that facilitates the uptake of fertilizers. Today, the increasing use of chemical fertilizers causes the humus in our land to be rapidly depleted. In order to solve this problem, more and more humic substances (humic acid and fulvic acid) are ...
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Adsorption and desorption of uranium(VI) onto humic acids derived from uranium-enriched lignites
Humic acids (HAs) were extracted and characterized from three kinds of uranium-enriched lignites from Yunnan province, China. Batch experiments were used to study the adsorption and desorption behavior of uranium (VI) onto these HAs and a commercial HA. The results showed that the optimum pH level at which all the HAs adsorbed uranium(VI) ranged from 5 to 8. The high uranium content of the ...
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Technology of rotary drum granulation humic acid organic fertilizer production line
The rotary drum granulator is lined with high temperature resistant, acid resistant and wear-resistant natural rubber plate. Atomized water or binder is introduced into the cylinder. The materials form a rolling bed with the friction generated by the rotary drum granulator. The extrusion force generated by rolling makes the materials with certain liquid phase agglomerate into small particles. ...
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Removal of humic acid from composted hog waste by the white-rot fungus,
Phanerochaete chrysosporium The potential hazards of humic acid (HA) associated with hog waste effluent, coupled with increasing awareness of environmental problems, have prompted many countries to control disposal of effluents into water bodies and to maximize removal of HA. Here we employed the white-rot fungus, Phanerochaete chrysosporium, to degrade the HA in composted hog waste effluent, evaluated by the response ...
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Evaluating the sorption of organophosphate esters to different sourced humic acids and its effects on the toxicity to Daphnia magna
Because of large usage as flame retardants and additives, organophosphate esters (OPEs) are widely detected in the environment and regarded as emerging contaminants. However, the sorption of OPEs to organic matter and its effects have scarcely been studied. In the present study, the sorption of nine commonly used OPEs to four representative humic acids (HAs) including Elliott Soil HA, Suwannee ...
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Bio Huma Netics, Inc., and Mesa Verde Resources Form Strategic Alliance
Bio Huma Netics, Inc. (BHN)—an Arizona company that produces products under the Huma Gro®, Huma Gro® Turf, and Probiotic Solutions® brands—has recently formed an alliance with Reid Enterprises LLC, which does business as Mesa Verde Resources in New Mexico. Mesa Verde Resources is a humic substance mining company that produces, manufactures, and sells humic-acid and ...
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Effect of implementing organic farming on chemical and biochemical properties of an irrigated loam soil
Conventional agriculture can lead to reduced soil organic matter and depletion in soil fertility. For that reason, Food and Agriculture Organization of the United Nations (FAO) recommends organic matter incorporation to soils to increase their agronomic quality. This work studies the effect of the transition to organic farming on chemical and biochemical properties of a loam soil (Xerofluvent), ...
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How to Prevent Fertilizer Caking in Compound Fertilizer Production
The longer the compound fertilizer is placed, the easier it will cake. On the contrary, the shorter the storage time, the more difficult it will cake. In order to avoid caking of compound fertilizer, what problems should we pay attention to in NPK fertilizer production line? Tianci fertilizer machine manufacturer will give you a detailed introduction, hoping to help you: A. Reasonable selection ...
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Agitator granulator is specially designed for organic fertilizer
Stirring teeth granulator of organic fertilizer is a kind of molding machine which can make materials into specific shape, and also becomes wet granulator of organic fertilizer. The organic fertilizer granulation machine uses the high-speed rotary mechanical stirring force and the resulting aerodynamic force to make the fine powder continuously realize the mixing, granulation, spheroidization, ...
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Advanced characterization of algogenic organic matter, bacterial organic matter, humic acids and fulvic acids
Advanced characterization techniques of organic matter, including bulk organic characterization, size-exclusion chromatography, three-dimensional excitation–emission matrix, Fourier transform infrared spectroscopy, and fractionations using Amberlite XAD-8/4 resins, were used to investigate differences and similarities in the physicochemical properties of four different organic matter, ...
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Function and production of carbon based fertilizer
Function of carbon based fertilizer Organic carbon fertilizer based on high-quality humic acid and fulvic acid can promote the formation of soil aggregate structure, reduce soil bulk density, increase cation exchange capacity, and regulate soil pH, thus contributing to improving soil water, fertilizer, heat preservation and ventilation capacity. Carbon based fertilizer processed by fertilizer ...
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Organic fertilizer granulator is the core of production technology
There are a wide range of raw materials for making organic fertilizer, including livestock manure, peat soil, humic acid, cow manure, chicken manure, sheep manure, duck manure, rabbit manure, sludge, filter sludge of sugar factory, distiller's grains of wine factory, etc. In view of these raw materials, our factory has developed a variety of granulator, roller extrusion granulator, conversion ...
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