Screening of high-efficiency potassium-dissolving strains and optimization of the potassium-dissolving process

• Autorzy: Xue Yongping , Xiao Chunqiao , Zhang Yantu , Chi Ruan

Identyfikatory

DOI

10.37190/ppmp/132177

• Języki publikacji: EN

Abstrakty

EN

The biosolubilization of potassium feldspar (K-feldspar) by potassium-dissolving microorganisms has become a hot research topic. However, the screening of highly efficient potassiumdissolving strains from the soils of mining areas has not been reported. In this study, 82 strains with potassium-dissolving ability were screened from soils collected from a K-feldspar mining area in Suizhou, Hubei Province, China. One of them, JX-20, was a gram-positive is spherical bacteria with smooth edges, which was identified as a new strain by 16S rRNA gene sequencing. Simultaneously, the influences of temperature, initial pH value, inoculation volume, incubation time, shaking speed, Kfeldspar concentration, K-feldspar granularity, and the ammonium sulfate dose on the potassium releasing ability of the JX-20 strain were investigated. The results showed that the JX-20 strain had an obvious dissolution effect on K-feldspar. The optimum conditions for the JX-20 strain to remove potassium from K-feldspar were as follows: cultured at 28-30℃ for ten days, initial pH value of 7.4-8, 60 mL medium in a 250 mL conical flask, and 170 r/min shaking speed on a rotary shaker. The Kfeldspar concentration, inoculation volume, K-feldspar granularity, and ammonium sulfate dose were 2 g/L, 20%, 0.02-0.03 mm, and 0.4 g/L, respectively. Under the above conditions, the highest corrosion efficiency of 39.75% was achieved.

Słowa kluczowe

EN

microorganism; potassium bacteria; potassium solubilization; potassium release; optimization of potassium-dissolving process

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Physicochemical Problems of Mineral Processing
• Rocznik: 2021
• Tom: Vol. 57, iss. 2
• Strony: 1--13
• Opis fizyczny: Bibliogr. 21 poz., rys., wykr.

Twórcy

autor

Xue Yongping

• Key Laboratory of Green Chemical Process of Ministry of Education, School of Xingfa Mining Engineering, Wuhan Institute of Technology, Wuhan, Hubei, China
• The College of Post and Telecommunication of Wuhan Institute of Technology, Wuhan, Hubei, China

autor

Xiao Chunqiao

• School of Environmental and Biological Engineering, Wuhan Institute of Technology, Wuhan, Hubei, China

autor

Zhang Yantu

• College of Chemistry & Chemical Engineering, Yan’an University, Yan’an, Shanxi, China

autor

Chi Ruan

• School of Xingfa Mining Engineering, Wuhan Institute of Technology, Wuhan 430073, China

Bibliografia

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2021).