Process for preparing fertilizers from xanthan gum fermentation waste
A technology for fermenting waste and preparing fertilizers, which is applied in the field of fermentation waste liquid treatment in the biological fermentation industry. It can solve the problems of difficult treatment, high cost, and difficulty in obtaining cost-effective by-products, etc., and achieves good market prospects, inhibits decomposition speed, and improves long-term effects. The effect of sustained release properties
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Embodiment 1
[0023] Utilize the technology that xanthan gum fermented waste is prepared fertilizer, it comprises the steps:
[0024] The xanthan gum fermentation waste is separated by a disc separator with a rotating speed of 4000rpm and a centrifugation time of 3min. The bacterial sediment and xanthan gum waste liquid are collected, and then the bacterial sediment is dried, and then the pulverizer is crushed into bacterial cells powder;
[0025] Add sodium alginate to xanthan gum waste liquid, heat to 70°C, stir at 200rpm for 30min under heat preservation conditions, until sodium alginate is completely dissolved, then add urea, ammonium phosphate and potassium chloride, stir at 100rpm for 60min, stop stirring , naturally to room temperature, then add calcium chloride, stir and cross-link at 200rpm to form particles, filter, and dry to obtain a coated fertilizer; the sodium alginate, xanthan gum waste liquid, urea, ammonium phosphate, potassium chloride and The mass ratio of calcium chlor...
Embodiment 2
[0029] Utilize the technology that xanthan gum fermented waste is prepared fertilizer, it comprises the steps:
[0030] The xanthan gum fermentation waste is separated by a disc separator with a rotating speed of 4000rpm and a centrifugation time of 3min. The bacterial sediment and xanthan gum waste liquid are collected, and then the bacterial sediment is dried, and then the pulverizer is crushed into bacterial cells powder;
[0031] Take sodium alginate and add it to xanthan gum waste liquid, heat to 70°C, and stir at 200rpm for 30min under heat preservation conditions until the sodium alginate is completely dissolved, then add urea, ammonium phosphate and potassium chloride, stir at 100rpm for 60min, stop stirring, Naturally cool to room temperature, then add calcium chloride, stir at 200rpm to cross-link to form particles, filter, and dry to obtain a primary coated fertilizer; the sodium alginate, xanthan gum waste liquid, urea, ammonium phosphate, potassium chloride and ch...
Embodiment 3
[0035] 1. Urea release time test:
[0036] The test group is Example 2; the control group: a primary coated fertilizer prepared only with sodium alginate-calcium chloride, without using urea-humic acid complex, and the preparation method is the same as in Example 2. The test soil is ordinary soil with a water content of 35%, and the fertilizer depth is 10cm. The specific results are shown in Table 1:
[0037] Table 1
[0038] Release rate%
[0039] As shown in Table 1, the release rate of urea in the control group was faster, and it was completely released within 32 days, while the release of urea in the test group was relatively stable, and it still maintained a certain fertilizer effect in about 32 days, which was suitable for plants with a shorter growth period; The fertilizer first releases the urea-humic acid complex in the outer layer. When the crops grow vigorously, the urea in the outer layer is released, and the core fertilizer begins to release, which is ...
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