Characteristics of vegetable crop cultivation and nutrient releasing with struvite as a slow-release fertilizer
- 61 Downloads
Struvite precipitation is an effective method to remove and recover ammonia and phosphate from livestock wastewater. Struvite has properties similar to those of the traditional ammonium-phosphate fertilizer, which does not burn the roots owing to its slow-release characteristics. Struvite is an effective fertilizer as its nutrient-releasing rate is very slow. But the release rate of ammonia and phosphate in soil depends on the size of crystals. In this study, the nutrient-releasing pattern of three types of struvite crystals and liquid fertilizer was compared using soil column. X-Ray fluorescence spectrometry was conducted to investigate the potential use of struvite as a fertilizer. Various struvite crystalline fertilizers were evaluated for their fertilizer performance by cultivating potted vegetable crops. The nitrogen removal efficiency of zeolite-seeded struvite was higher than that of no seed struvite. The ammonia nitrogen removal efficiency was more than 99% irrespective of the kind of zeolite. The soil column test revealed that nutrient releasing from liquid fertilizer and zeolite-seeded struvite recovered from livestock wastewater was 11 and 63 days, respectively. Struvite recovered from livestock wastewater contained more than 20% (w/w) potassium oxide; however, the concentration of heavy metals, such as copper and zinc, was very low. Therefore, we considered that the synthesized struvite using livestock wastewater has high value as fertilizer. The recovered struvite was effective under appropriate concentrations to cultivate all the applied vegetable crops in this study.
KeywordsNutrient releasing Nutrient recovery Struvite Slow-release fertilizer Cultivation
This work was supported by the Korea Ministry of the Environment (MOE) as “The advancement of scientific research and technological development in environmental science program” (Project No. 2014000150005) and the “Human Resources Program” in Energy Technology of the Korea Institute of Energy Technology Evaluation and Planning (KETEP), granted financial resource from the Ministry of Trade, Industry and Energy, Republic of Korea (Grant No. 20194010201790).
- Aleta P, Parikh S-J, Silchuk A-P, Scow K-M, Park M, Kim S (2018) The effect of organic matter on the removal of phosphorus through precipitation as struvite and calcium phosphate in synthetic dairy wastewater. Membr Water Treat 9(3): 163–172Google Scholar
- Ali I, Schneider P-A (2005) Crystallization of struvite from metastable region with different types of seed crystal. J Non-Equil Therm 30(2):95–111Google Scholar
- El Aila H-I (2002) Compaction of meyals salt urea complexes with single superphosphate and their effects on radish plant. J Agric Sc Mansoura Univ 27:5101–5119Google Scholar
- European Fertilizer Manufacturers Association et al (2000) Phosphorus: essential element for food production. European Fertilizer Manufacturers Association (EFMA), BrusselsGoogle Scholar
- Gonzalez Poncer R, Garcialopez D-M-E (2007) Evaluation of struvite as a fertilizer: a comparison with traditional P sources. Agrochimica 51(6):301–308Google Scholar
- Islam M-R, Rahman S-M-E, Rahman M-M, Oh D-H, Ra C-S (2010) The effects of biogas slurry on the production and quality of maize fodder. Turk J Agric For 34(1):91–99Google Scholar
- Mao X-Y, Sun K-J, Wang D-H, Liao Z-W (2005) Controlled-release fertilizer (CRF): contamination in agriculture. J Environ Sci 17(2):181–184Google Scholar
- Ohlinger K-N, PE, Young T-M, Schroeder E-D (1999) Kinetics effects on preferential struvite accumulation in wastewater. J Environ Eng 125(8): 730–737Google Scholar
- Rothbaum H-P, Rohde A-G (1976) Long-term leaching of nutrients from magnesium ammonium phosphate at various temperatures. N Z J Crop Hortic Sci 4(4):405–413Google Scholar
- Rural Development Administration (RDA) (2013) Fertilizer Control ActGoogle Scholar
- Xu H, He P, Gu W, Wang G, Shao L (2012) Recovery of phosphorus as struvite from sewage sludge ash. J Environ Eng 24(8):1533–1538Google Scholar