Microbial immobilization of 15N from legume residues in soils of differing textures: Measurement by persulphate oxidation and ammonia diffusion methods

1996 ◽  
Vol 28 (12) ◽  
pp. 1707-1715 ◽  
Author(s):  
G.P. Sparling ◽  
Chunya Zhu ◽  
I.R.P. Fillery
Catalysts ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 480
Author(s):  
Valentin Dubois ◽  
Carmen S. D. Rodrigues ◽  
Ana S. P. Alves ◽  
Luis M. Madeira

In the present work, the degradation of p-nitrophenol (PNP) and its mineralization by a UV/Vis-based persulphate activation process was investigated. Firstly, a screening of processes as direct photolysis, persulphate alone and persulphate activated by radiation was performed. The incidence of radiation demonstrated to have an important role in the oxidant activation, allowing to achieve the highest PNP and total organic carbon (TOC) removals. The maximum PNP oxidation (100%) and mineralization (61.6%)—both after 2 h of reaction time—were reached when using T = 70 °C, (S2O82−) = 6.4 g/L and I = 500 W/m2. The influence of radiation type (ultraviolet/visible, visible or simulated solar light) was also evaluated, being found that the source with the highest emission of ultraviolet radiation (UV/visible) allowed to achieve the best oxidation efficiency; however, solar radiation also reached very-good performance. According to quenching experiments, the sulphate radical is key in the activated persulphate oxidation process, but the hydroxyl radical also plays an important role.


Ecology ◽  
2000 ◽  
Vol 81 (7) ◽  
pp. 1858-1866 ◽  
Author(s):  
Gregory P. Zogg ◽  
Donald R. Zak ◽  
Kurt S. Pregitzer ◽  
Andrew J. Burton

RSC Advances ◽  
2016 ◽  
Vol 6 (7) ◽  
pp. 5330-5340 ◽  
Author(s):  
P. V. Nidheesh ◽  
Raman Rajan

Iron loaded activated carbon (IAC) was used as an effective heterogeneous catalyst for generating hydroxyl (via Fenton reactions) and sulphate radicals (via persulphate oxidation), and it tested for the degradation of rhodamine B (RhB) from a water medium.


2020 ◽  
Vol 31 ◽  
pp. 69-74 ◽  
Author(s):  
Soh Wai Onn ◽  
Mohammed J.K. Bashir ◽  
Sumathi Sethupathi ◽  
Salem S. Abu Amr ◽  
Tan Tai Nguyen

2020 ◽  
Vol 214-215 ◽  
pp. 106183
Author(s):  
Christopher E. Bagwell ◽  
Elizabeth C. Gillispie ◽  
Amanda R. Lawter ◽  
Nikolla P. Qafoku

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