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Agriculture use Sepiolite natural fertilizer additive for soil purification remove heave metal and polution cleaner

    • Agriculture use Sepiolite natural fertilizer additive for soil purification remove heave metal and polution cleaner
    • Agriculture use Sepiolite natural fertilizer additive for soil purification remove heave metal and polution cleaner
    • Agriculture use Sepiolite natural fertilizer additive for soil purification remove heave metal and polution cleaner
    • Agriculture use Sepiolite natural fertilizer additive for soil purification remove heave metal and polution cleaner
  • Agriculture use Sepiolite natural fertilizer additive for soil purification remove heave metal and polution cleaner

    Product Details:

    Place of Origin: China
    Brand Name: OEM
    Certification: CO
    Model Number: additive

    Payment & Shipping Terms:

    Minimum Order Quantity: 1 ton
    Price: $200-400/ton
    Packaging Details: 20kg/25 kg/bag
    Delivery Time: 7 days
    Payment Terms: T/T, L/C, Western Union
    Supply Ability: 100000tons/year
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    Detailed Product Description
    Usage: Soil Clean And Others Raw Material: Sepiolite
    Color: White Or Other

    About Sepiolite

     

     

    Formula: Mg4(Si6O15)(OH)2 · 6H2O
    Colour: White, light gray or light yellow.
    Lustre: Sub-Vitreous, Silky, Dull, Earthy
    Hardness: 2
    Specific Gravity: 2.0 - 2.2
    Crystal System: Orthorhombic
    Member of: Sepiolite Group
    Name: Named in 1847 by Ernst Friedrich Glocker from the Greek, "sepion," cuttle-fish bone, because of its low density and porous, bone like appearance. Originally named meerschaum by Abrahan Gottlieb Werner in 1788. Later translated as l'Ecume de mer. In 1794, the mineral was called keffekill by Richard Kirwan. Alexandre Brongniart called this mineral magnesite in 1807.
    Type Locality: Monti Pelati, Bettolino, Baldissero Canavese, Canavese District, Torino Province, Piedmont, Italy
    Isostructural with: Falcondoite, Ferrisepiolite

     

    Commonly found as compact masses of microscopic needles resulting in a low-density masses. May be an important constituent of "mountain leather". Free-standing acicular crystals not found in many localities.

     

    May be confused with palygorskite. Results of García-Romero & Suárez (2010) indicate that no compositional gap exists between sepiolite and palygorskite.

     

    Physical Properties of Sepiolite

     

    Lustre: Sub-Vitreous, Silky, Dull, Earthy
    Transparency: Translucent, Opaque
    Colour: White, light gray or light yellow.
    Streak: White
    Hardness: 2 on Mohs scale
    Tenacity: Brittle
    Parting: Good, but grain sizes are generally small and no cleavage may be seen.
    Fracture: Fibrous
    Comment: May be in parallel fibrous aggregates
    Density: 2.0 - 2.2 g/cm3 (Measured) 2.25 g/cm3 (Calculated)
    Comment: May be very light due to porous aggregates

     

    Chemical Properties of Sepiolite

     

    Formula: Mg4(Si6O15)(OH)2 · 6H2O
    IMA Formula: Mg4Si6O15(OH)2 · 6H2O
    Elements listed: H, Mg, O, Si - search for minerals with similar chemistry
    Common Impurities: Al,Ca,Fe,Ni

    What effect does sepiolite have on the soil?
    The special structure of sepiolite itself determines its three properties, namely adsorption, rheology and catalytic properties.
    Due to its unique crystal structure, sepiolite has the characteristics of large specific surface area, good adsorption performance and strong ion exchange capacity, low cost, abundant reserves, relatively simple processing technology, environmental protection, low investment and good treatment effect. And there is no secondary pollution, so it has broad application prospects in environmental management.
    The adsorption and ion exchange capacity of sepiolite can also be applied to the repair of contaminated soil. The related people studied the passivation and remediation effects of sepiolite, phosphate and their combination on heavy metal Cd and Pb combined contaminated soil by pot experiment. The results showed that the single treatment of sepiolite did not significantly promote the growth of rapeseed, while the single treatment of phosphate and the composite treatment of sepiolite and phosphate could significantly increase the biomass of shoots and roots of rapeseed. The composite treatment of sepiolite and phosphate had the most significant effect on reducing the mass ratio of Cd and Pb in the aboveground rapeseed. The maximum reduction rate was 59.76% and 38.95%, respectively. The single treatment of phosphate reduced the quality ratio of Cd and Pb in rapeseed roots. The maximum reduction rate can reach 32.19% and 44.30%; the single treatment of sepiolite can reduce the absorption of Cd and Pb in rapeseed. Different passivation treatments can significantly increase soil pH. Most of the passivation treatment can significantly reduce the mass ratio of soil active Cd and Pb. According to the comprehensive test results, the composite treatment of 6% sepiolite and phosphate had the best passivation effect on the combined pollution of soil Cd and Pb.
    Sepiolite has a large specific surface area and a high pH value, and has strong adsorption capacity for heavy metal ions, and can be used for the improvement of heavy metals exceeding the standard soil.
    The adsorption and desorption characteristics of sepiolite on Cd are the main influencing factors. The adsorption and desorption characteristics of sepiolite on the Cd of three typical paddy soils of red, yellow, yellow and red sand mud and the effect of Cd on soil transformation. And the in situ repair effect of sepiolite for Cd super-sized paddy soil. The main results are as follows:
    1. The adsorption of Cd on sepiolite is mainly affected by contact time, solution Cd concentration, pH value and accompanying ionic strength. The adsorption of Cd by sepiolite is a rapid process. The adsorption reaches about 60 min and the maximum adsorption is 2288 mg kg-1. X-ray diffraction and Fourier transform infrared spectroscopy of sepiolite before and after adsorption showed that the adsorption of Cd by sepiolite was mainly physical adsorption and ion exchange adsorption. When the pH of the solution is <4, the decrease of pH will significantly reduce the adsorption amount of sepiolite to Cd. When pH≥4, the change of pH value has little effect on the adsorption amount of sepiolite. The increase in companion ionic strength (Na+ and NO3-) inhibits the adsorption of Cd by sepiolite.
    2. Adding sepiolite can effectively enhance the adsorption capacity and strength of paddy soil for Cd. When the concentration of Cd in the solution is the same, the addition of sepiolite can increase the adsorption amount of Cd by red-yellow mud, yellow muddy soil and red sand mud by 17%-60%, and reduce the desorption rate of adsorbed Cd (up to 25%), the effect is enhanced with the increase of the amount of sepiolite added. The Freundlich equation can better fit the isothermal adsorption process of Cd on three paddy soils after adding sepiolite (R2>0.95). The effect of pH change on the adsorption of Cd on the three soils was basically the same as that on the adsorption of Cd on sepiolite.
    3. The addition of sepiolite can effectively passivate the exogenous Cd in paddy soil, and its effect is enhanced with the increase of sepiolite addition, and it is greatly affected by soil moisture conditions. In the initial stage of the experiment (2 d), under the conditions of 45% WHC and 110% WHC (flooded) water, the addition of sepiolite reduced the Cd content of DTPA extracted from red paddy, yellow mud and red sand mud by 8 respectively. %~54% and 7%~59%; with the prolongation of culture time, this effect gradually weakened under the condition of 45% WHC water, while under the flooding condition, the reduction effect did not change much. Under the two water conditions, the addition of sepiolite reduced the exchangeable Cd content in the three paddy soils (maximum decrease of 55%), and the carbonate-bound state and iron-manganese oxide bound Cd content increased significantly (maximum increase) It reached 232% and 329%) and both changed more under flooding conditions. The addition of sepiolite can significantly increase soil pH and reduce its Eh value, which is an important reason for the change of Cd morphology in soil.
    4. The application of sepiolite can significantly reduce the effectiveness of Cd in Cd-excess paddy soil and the content of Cd in agricultural products. The field test results showed that the application of sepiolite and lime increased the soil pH by 0.3-2.0, the ratio of acid-extracted Cd decreased by 3% to 15%, and the ratio of the reduced and residual Cd increased accordingly. The change of soil Cd shape effectively inhibited the absorption of Cd by crops: the content of Cd in the aboveground part of rice decreased significantly, the Cd of brown rice decreased by 15.0%~48.8%, the Cd of rice husk decreased by 25.0%~60.2%, and the Cd of straw decreased by 19.0. From % to 53.4%, the Cd content of radish stem and radish leaves decreased by 10.0% to 58.3% and 10.8% to 50.0%, respectively. The effect of different modifiers was sepiolite and lime combined with > sepiolite > lime, and the effect was enhanced with the increase of dosage. Schizobolite and lime had no significant effect on rice yield, biomass and Cd distribution in rice and radish.

     

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    Agriculture use Sepiolite natural fertilizer additive for soil purification remove heave metal and polution cleaner

    Agriculture use Sepiolite natural fertilizer additive for soil purification remove heave metal and polution cleaner

    Agriculture use Sepiolite natural fertilizer additive for soil purification remove heave metal and polution cleaner

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