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Trace metal element Chelation fertilizer in lignin and application thereof

A technology of trace metal elements and metal elements, applied in application, fertilization equipment, fertilizer mixture, etc., can solve the problems of limited chelation ability, and achieve the effect of strong chelation ability, good fertilizer efficiency and low raw material price

Inactive Publication Date: 2011-01-12
SHENZHEN BATIAN ECOTYPIC ENG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the lignin salt has limited ability to chelate trace elements, and the chelated metal elements generally do not exceed 5%.

Method used

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  • Trace metal element Chelation fertilizer in lignin and application thereof
  • Trace metal element Chelation fertilizer in lignin and application thereof
  • Trace metal element Chelation fertilizer in lignin and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0093] Chelation Stability of Lignin Salts and Fe Elements

[0094] In this study, the chelation average coordination number x and the chelation equilibrium constant lgK of the lignin salt-Fe chelate were measured respectively by the ion exchange equilibrium method, and the results are listed in Table 1. The lg(λ 0 / λ-1) and lg [lignin salt] relation diagram such as figure 1 shown.

[0095] Chelation stability determination of table 1 lignin salt and FeSO

[0096]

[0097] Note: α is [M], β is [M]+[MAx], γ is [Mf]-[M], δ is [Mf]-([M]+[MAx])

[0098] Depend on figure 1 It can be seen that lignin salt and FeSO 4 The coordination number x of Fe is 1.03, and its stability constant lgK is equal to 1.04.

[0099] h 2 o 2 Chelation Stability of Oxidized Lignin Salts with Fe Elements

[0100] The preparation reaction condition of oxidized lignin salt is H 2 o 2 Adding amount 2.5%; FeSO 4 :H 2 o 2 =1:20 (mol ratio), reaction temperature 40°C, reaction time 30min. Deter...

Embodiment 2

[0111] Chelation Stability of Lignin Salt and Zn

[0112] Also measure the chelation average coordination number x and the chelation equilibrium constant lgk of lignin salt-Zn chelate with ion exchange equilibrium method respectively, the results are listed in table 3, lignin salt-Zn 2+ Chelate lg(λ 0 / λ-1) and lg [lignin salt] relation diagram such as image 3 Shown:

[0113] Depend on image 3 It can be seen that the average coordination number of the lignin salt-Zn chelate is 1.94, and the chelation stability constant is 0.98. Its coordination number is higher than lignin salt-Fe chelate, but its stability constant is lower.

[0114] Chelation Stability of H2O2 Oxidized Lignin Salt and Zn

[0115] h 2 o 2 The preparation reaction condition of oxidized lignin salt is: H 2 o 2 Adding amount 2.5%, FeSO 4 The amount added is based on FeSO 4 :H 2 o 2 =1:20 (mol ratio) is determined, the reaction temperature is 40° C., and the reaction time is 30 minutes. Determinatio...

Embodiment 3

[0121] This study mainly investigates the excess FeSO 4 In the presence of conditions, H 2 o 2 Effects of dosage, reaction temperature and reaction time on the chelation of lignin ammonium salt and Fe element. FeSO in the reaction system 4 The mass ratio to lignin ammonium salt is 2:3, H 2 o 2 The dosages (based on lignin ammonium salt) are 0%, 2.5%, 5% and 10% respectively; the reaction times are 10min, 30min and 120min respectively; the reaction temperatures are 20°C, 40°C and 60°C respectively. By comparing the chelation rate of Fe element in the product under different reaction conditions, it is determined that lignin ammonium salt and FeSO 4 Process conditions for chelation reactions. in different H 2 o 2 The chelation rate of iron in the chelated product is shown in Table 5 under the dosage, different reaction temperatures and different reaction times.

[0122] Table 5 Fe under different process conditions 2+ Chelation rate, %

[0123]

[0124] h 2 o 2 Th...

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Abstract

The invention provides a trace metal element chelation fertilizer in lignin and application thereof. The trace metal element chelation fertilizer in the lignin is a mixture of lignosulfonate and metal element chelates and shows the following physical-chemical characteristics of: 1, appearance: white powder; and 2, stability parameters of chelate: the average coordination number x is between 0.9 and 1.95 and the stability constant 1gK is between 0.6 and 2.10; and 3, the metallic chelation rate is 10 to 13.55 percent. The lignosulfonate-metal element chelation fertilizer is prepared by performing oxidative modification reaction on paper-making waste liquid lignosulfonate and metal elements such as iron, zinc and copper which serve as raw materials, and the chelation property of lignin ammonium is quantitatively described by measuring the stability of the chelates of lignin ammonium-Fe and lignin ammonium-Zn. The industrial lignin and the metal elements form the 'lignin-metal elements' chelates, and the obtained chelates are dried to form solid products or the obtained chelates after proper concentration can be mixed with other kinds of fertilizers to prepare various compound fertilizers.

Description

technical field [0001] The invention relates to preparation of lignin-medium trace element chelated fertilizer by modifying lignin salt of papermaking pulping waste liquid and application of the chelated fertilizer in compound fertilizer. Background technique [0002] Plant growth needs to absorb dozens of chemical elements from the soil as nutrients, including iron (Fe), copper (Cu), zinc (Zn), boron (B), chromium (Mo), manganese (Mn), magnesium (Mg) The demand of plants and other plants is very small, accounting for a few ten thousandths or even a few millionths of the weight of things. Trace elements play an important role in the growth and development of plants, they are indispensable and cannot replace each other. [0003] Traditional inorganic salt metal micro-fertilizers tend to form precipitation in the soil after application, which is not conducive to the absorption and utilization of plants. In agricultural production, there is an urgent need for a new type of ch...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G1/00
Inventor 黄培钊金永灿葛仁山贺德之段继贤李忠正
Owner SHENZHEN BATIAN ECOTYPIC ENG
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