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Mechanochemical approach to synthesize citric acid-soluble fertilizer of dittmarite (NH4MgPO4·H2O) from talc/NH4H2PO4 mixture.

ABSTRACT: In this study, a citric acid-soluble fertilizer of dittmarite (NH4MgPO4·H2O) was synthesized by balling talc with NH4H2PO4. The effects of ball milling speed and milling time on the dissolution rates of N, P and Mg in deionized water and 2% citric acid were explored. Characterization technologies such as X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), thermogravimetric analysis (TG) and Scanning electron microscopy (SEM) were applied to test the prepared samples. In water, the prepared dittmarite was changed into struvite (NH4MgPO4·6H2O) with almost no N, P or Mg release, while the dissolution rates of nutrient elements reached almost 100% in 2% citric acid. The proposed work presented a facile and environmentally friendly method to produce CASF with high agricultural and ecological value.

SUBMITTER: Tan Y 

PROVIDER: S-EPMC9053601 | biostudies-literature | 2020 May

REPOSITORIES: biostudies-literature

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Mechanochemical approach to synthesize citric acid-soluble fertilizer of dittmarite (NH<sub>4</sub>MgPO<sub>4</sub>·H<sub>2</sub>O) from talc/NH<sub>4</sub>H<sub>2</sub>PO<sub>4</sub> mixture.

Tan Yonghao Y   Sha Lin L   Yu Nengkui N   Yang Zhengshuo Z   Qu Jun J   Xu Zhigao Z  

RSC advances 20200506 30

In this study, a citric acid-soluble fertilizer of dittmarite (NH<sub>4</sub>MgPO<sub>4</sub>·H<sub>2</sub>O) was synthesized by balling talc with NH<sub>4</sub>H<sub>2</sub>PO<sub>4</sub>. The effects of ball milling speed and milling time on the dissolution rates of N, P and Mg in deionized water and 2% citric acid were explored. Characterization technologies such as X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), thermogravimetric analysis (TG) and Scanning electron  ...[more]

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