Fertilizers

Scherer, Heinrich W.; Mengel, K.; Dittmar, Heinrich; Drach, Manfred; Vosskamp, Ralf; Trenkel, Martin E.; Gutser, R.; Steffens, Günter; Czikkely, Vilmos; Niedermaier, Titus; Hähndel, R.; Prün, Hans; Ullrich, Karl-Heinz; Mühlfeld, Hermann; Werner, W.; Kluge, Günter; Kuhlmann, F.; Steinhauser, H.; Brändlein, Walter; Kummer, Karl-Friedrich

doi:10.1002/14356007.a10_323

Cited by 4 publications

(2 citation statements)

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“…For example, high phosphorus content is needed during the vegetative stage when roots are growing, and soil needs to be potassium enriched during plant blossoming and fermentation stages. In general, NPK 5-5-3 was targeted to be used for grain crops, whereas 3-3-7 and 4-5-8 were used for fruit in blossoming stage and grain crops in soil deficient of potassium . First, we investigated the maximum available dry matter content achievable in poultry manure after drying at 95 ± 5 °C.…”

Section: Resultsmentioning

confidence: 99%

Engineered Pelletized Organo-Mineral Fertilizers (OMF) from Poultry Manure, Diammonium Phosphate and Potassium Chloride

Mažeika

Staugaitis

Baltrušaitis

2016

ACS Sustainable Chem. Eng.

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In this work, we engineered a pilot scale process for the production of granulated organic- and organo-mineral fertilizers (OGF and OMF) from poultry manure. We investigated the effects of moisture content in the manure, energy consumption during the three main stages of the process and the possibility to obtain nutrient balanced fertilizers using conventional straw drying and granulation equipment, common on the farms. Poultry manure was dried and shredded to no less than 90% of dry mass at 95 °C. Granulation was performed via extrusion with and without mineral additives, such as diammonium phosphate (DAP) and potassium chloride (KCl). This process was used to achieve 4-3-3 OGF, as well as tunable NPK content (4-4-2, 4-3-6 and 4-4-9) OMF. Energy consumption as the manure dried was about 100 kWh/t of product. This limiting step of the process suggests that the maximum achievable drying of sub 10% water currently commonly used is not necessarily economically optimal. DAP was used to increase water-soluble phosphate concentration and was limited to 6% of the total amount by the emission of ammonia during the granulation process. Additionally, the presence of hygroscopic KCl in combination with DAP resulted in significant moisture absorption and loss of the granulized pellet structural integrity after 72 h at 30 °C and 80% RH. Significant increases in yields of rapeseed and potato crops were observed with the 2 t/ha application of OGF or DAP/KCl enhanced OMF. The engineered process will provide for sustainable production of nutrient balanced organo-mineral fertilizers on the manure production sites using conventional equipment already used for straw processing.

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Section: Resultsmentioning

confidence: 99%

Engineered Pelletized Organo-Mineral Fertilizers (OMF) from Poultry Manure, Diammonium Phosphate and Potassium Chloride

Mažeika

Staugaitis

Baltrušaitis

2016

ACS Sustainable Chem. Eng.

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“…Fertilizer is a key factor in agricultural production [1], and as an important part of the "green revolution", it has contributed greatly to increasing crop yields and reducing hunger worldwide [2]. Nitrogen, phosphorus and potassium fertilizers are the three most used fertilizers in the world, and according to the Food and Agriculture Organization of the United Nations (FAO), fertilizers contribute up to 40% of food production, are the "food" of food, and have an irreplaceable role in promoting the development of food and agricultural production [3].…”

Section: Introductionmentioning

confidence: 99%

Thoughts on the Development of Potassium Resources in China

Wei,

Zhang,

et al. 2023

Atlantis Highlights in Engineering

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Potassium is one of the three major nutrients (nitrogen, phosphorus, potassium) necessary for crop growth. Most of the potassium needed for crop growth is mainly provided by potassium fertilizer, which plays an irreplaceable role in promoting the development of food and agricultural production. This paper systematically analyzes the relationship between potassium and agriculture development, the status quo of potassium resources, and the status quo of potassium industry development, and conducts an in-depth analysis of the development of the potash fertilizer industry from two aspects: market demand and guarantee demand, and finally puts forward some suggestions for the sustainable development of potassium resources. Increase the leading role of the government and the comprehensive utilization of salt lake potash mines, strengthen the research and utilization of insoluble potassium resources to produce potash fertilizers, and continue to promote the construction of overseas potash fertilizer base industries in order to meet China's urgent demand for potash fertilizers in the future.

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