The fertilizer release into water and soil as the biodegradation process in the sustainable material enhancing the fertilizer efficiency

2021 ◽  
Vol 22 ◽  
pp. 101417
Author(s):  
Camila Gruber Chiaregato ◽  
Claudinei Fonseca Souza ◽  
Roselena Faez
Keyword(s):  
Fertilizer Efficiency ◽  
Sustainable Material ◽  
Biodegradation Process ◽  
Fertilizer Release

Population Density of Unirrigated Maize and its Influence Upon Fertilizer Efficiency in Central Mexico

1950 ◽  
Vol 14 (C) ◽  
pp. 270-275 ◽  
Author(s):  
Eilif V. Miller ◽  
John B. Pitner ◽  
Ricardo Villa J. ◽  
Carlos Romo G.
Keyword(s):  
Population Density ◽  
Fertilizer Efficiency ◽  
Central Mexico

Study of Thermal Insulation Performance of Layered Jute Nonwoven: A Sustainable Material

2021 ◽  
pp. 1-14
Author(s):  
Kartick K. Samanta ◽  
Izhar Mustafa ◽  
Sayandeep Debnath ◽  
Esha Das ◽  
G. Basu ◽  
...  
Keyword(s):  
Thermal Insulation ◽  
Sustainable Material ◽  
Insulation Performance

scholarly journals Spatiotemporal Dynamics of Nitrogen Budgets under Anthropogenic Activities in Metropolitan Areas

2021 ◽  
Vol 13 (4) ◽  
pp. 2006
Author(s):  
Ning Ding ◽  
Jingfeng Zhu ◽  
Xiao Li ◽  
Xiangrong Wang
Keyword(s):  
Anthropogenic Activities ◽  
River System ◽  
Yangtze River Delta ◽  
Fertilizer Efficiency ◽  
Land Use Pattern ◽  
Human Disturbances ◽  
Nitrogen Budgets ◽  
Metropolitan Regions ◽  
Close Relationship ◽  
Anthropogenic Nitrogen

The rapid growth of metropolitan regions is closely associated with high nitrogen (N) flows, which is known as the most important reason for widespread water pollution. It is, therefore, crucial to explore the spatiotemporal patterns of N budgets under intensive human activity. In this study, we estimated the long-term (2000–2015) N budgets by integrating the net anthropogenic nitrogen input (NANI) and the export coefficient model (ECM) in the Yangtze River Delta Urban Agglomeration (YRDUA), a typical metropolitan area with strong human disturbances. The results revealed that the NANI decreased by 10% from 2000 to 2015, while N exports showed a 6% increase. Hotspots for N budgets were found in the northeastern areas, where cropland and construction land were dominant. The linear regression showed a close relationship between the NANI and N export, and about 18% of the NANI was exported into the river system. By revealing the critical sources and drivers of N budgets over time, our work aimed to provide effective information for regional policy on nitrogen management. Future strategies, such as improving the fertilizer efficiency, optimizing the land use pattern, and controlling the population density, are necessary in order to address the environmental challenge concerns of excessive N.

scholarly journals Enzyme-catalyzed biodegradation of penicillin fermentation residues by β-lactamase OtLac from Ochrobactrum tritici

2021 ◽  
Vol 20 (1) ◽  
Author(s):  
Peng Wang ◽  
Chen Shen ◽  
Qinqin Cong ◽  
Kaili Xu ◽  
Jialin Lu
Keyword(s):  
Large Scale ◽  
In Vitro Study ◽  
Scale Removal ◽  
E Coli ◽  
Penicillin V ◽  
Highly Active ◽  
Steady State Kinetics ◽  
Biodegradation Process ◽  
Km Value

Abstract Background Biodegradation of antibiotics is a promising method for the large-scale removal of antibiotic residues in the environment. However, the enzyme that is involved in the biodegradation process is the key information to be revealed. Results In this study, the beta-lactamase from Ochrobactrumtritici that mediates the biodegradation of penicillin V was identified and characterized. When searching the proteins of Ochrobactrumtritici, the β-lactamase (OtLac) was identified. OtLac consists of 347 amino acids, and predicted isoelectric point is 7.0. It is a class C β-lactamase according to BLAST analysis. The coding gene of OtLac was amplified from the genomic DNA of Ochrobactrumtritici. The OtLac was overexpressed in E. coli BL21 (DE3) and purified with Ni2+ column affinity chromatography. The biodegradation ability of penicillin V by OtLac was identified in an in vitro study and analyzed by HPLC. The optimal temperature for OtLac is 32 ℃ and the optimal pH is 7.0. Steady-state kinetics showed that OtLac was highly active against penicillin V with a Km value of 17.86 μM and a kcat value of 25.28 s−1 respectively. Conclusions OtLac demonstrated biodegradation activity towards penicillin V potassium, indicating that OtLac is expected to degrade penicillin V in the future.

Flax seeds based magnetic hybrid nanocomposite: An advance and sustainable material for water cleansing

2021 ◽  
Vol 42 ◽  
pp. 102150
Author(s):  
Arshi Choudhry ◽  
Atul Sharma ◽  
Tabrez Alam Khan ◽  
Saif Ali Chaudhry
Keyword(s):  
Hybrid Nanocomposite ◽  
Sustainable Material ◽  
Flax Seeds
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