Nutrient recovery from biomass cultivated as catch crop for removing accumulated fertilizer in farm soil

2012 ◽  
Vol 66 (5) ◽  
pp. 1110-1116 ◽  
Author(s):  
H. Nagare ◽  
T. Fujiwara ◽  
T. Inoue ◽  
S. Akao ◽  
K. Inoue ◽  
...  
Keyword(s):  
Crystal Form ◽  
Nitrate Pollution ◽  
Nutrient Recovery ◽  
Naoh Solution ◽  
Potential Resource ◽  
Phosphorus And Potassium ◽  
Continuous Use ◽  
Nitrogen Phosphorus ◽  
New System

As a result of long-term continuous use of fertilizers in farm land, a large amount of nutrients accumulate in the soil, increasing the risk of eutrophication or nitrate pollution of groundwater. For rehabilitating the farm soil and recovering nutrients such as nitrogen, phosphorus and potassium, a new system has been developed by our research group. This paper discusses the methodology of extracting nutrients from biomass in order to recover phosphorus and other nutrients in crystal form. Around 80% or higher extraction rates were achieved for phosphorus and potassium by soaking the powdered tissue in distilled water or 1% NaOH solution for 24 h. The extracted phosphorus and potassium act as a potential resource for recycled fertilizer or other industrial materials.

scholarly journals Communicating the Risks and Benefits of Human Urine-Derived Fertilizer

2020 ◽  
Vol 12 (23) ◽  
pp. 9973
Author(s):  
Alex Segrè Cohen ◽  
Nancy G. Love ◽  
Joseph Árvai
Keyword(s):  
Risk Communication ◽  
Human Urine ◽  
Communication Strategies ◽  
Consumer Acceptance ◽  
Public Acceptance ◽  
Global Challenge ◽  
Urine Diversion ◽  
Phosphorus And Potassium ◽  
Nitrogen Phosphorus

Ensuring long-term access to nutrients needed for food production is a growing global challenge. Human urine diversion and recycling is a viable and energy-efficient means of recovering nitrogen, phosphorus, and potassium from wastewater. Before implementation, however, it is critical to understand how communicating differently about human urine-derived fertilizer may influence its public acceptance. This study tests how different strategies of communication (video compared to texts), as well as different amounts of information, impact public acceptance. We also explored how specific characteristics, such as age and education level, may impact the usefulness of the different strategies of communication. The results indicate that short and long videos are the most useful risk communication strategies, and age fully moderates this relationship. This research may serve as a jumping off point for future studies focused on how risk communication strategies may affect consumer acceptance of other emerging food technologies.

Nutrient Recovery from Agricultural Wastewater by Integrated Electrokinetic Processes

2020 ◽  
Author(s):  
Shu-Yuan Pan ◽  
Chao-Yu Wei ◽  
Anwar Jamaal Wade ◽  
Po-Chih Tseng
Keyword(s):  
Energy Efficient ◽  
Large Scale ◽  
Value Added ◽  
Nutrient Recovery ◽  
Agricultural Wastewater ◽  
Nutrient Reuse ◽  
Process Chemistry ◽  
Electrokinetic Separations ◽  
Phosphorus And Potassium ◽  
Nitrogen Phosphorus

<p>Agricultural wastewater including anaerobic digestate is annually generated in a huge quantity in Taiwan. The management of agricultural wastewater should be emphasized on the recovery and production of value-added resources, such as macronutrients (nitrogen, phosphorus, and potassium), for realizing the circular bioeconomy. In this paper, we will illustrate the development of energy-efficient electrokinetic processes for nutrient recovery from agricultural wastewater. First, we evaluate the performance of electrokinetic separations processes for recovery of macronutrients. We also discuss major challenges in managing nutrient reuse by the developed electrokinetic methods. Then, we elucidate the process chemistry and reaction kinetics by the processes. Lastly, we consider the interconnectivity among water, energy and the produced macronutrients in the context of large-scale deployment.</p>

Fertilizer responses with non-irrigated Shiraz grapevines, 1944-1966

1970 ◽  
Vol 21 (2) ◽  
pp. 243 ◽  
Author(s):  
HW Tulloch ◽  
WB Harris
Keyword(s):  
South Australia ◽  
Growth And Yield ◽  
Yield Response ◽  
Positive Interaction ◽  
Severe Reduction ◽  
Factorial Trial ◽  
Phosphorus And Potassium ◽  
One Year ◽  
Nitrogen Phosphorus

A long-term factorial trial with nitrogen, phosphorus, and potassium fertilizers was started at Nuriootpa Viticultural Station, South Australia on the grape cultivar Shiraz in 1944. Results show a significant yield response to superphosphate. Long-term applications of ammonium sulphate resulted in severe reduction of vine growth and yield, and a significant lowering of soil pH. No direct response to potassium sulphate was obtained except in one year, but a positive interaction between potassium and phosphorus occurred in some years. An analysis of the components of yield in 1964 showed that the increase in yield with superphosphate was due to an increase in the number of berries per bunch. The nitrogen, phosphorus, and potassium contents of petioles were determined and related to available reference standards.

Some effects of continuous use of herbicides in sultanas in the Sunraysia area

1970 ◽  
Vol 10 (45) ◽  
pp. 480 ◽  
Author(s):  
PW Weiss
Keyword(s):  
Organic Matter ◽  
Soil Organic Matter ◽  
Cation Exchange ◽  
Weed Control ◽  
Cation Exchange Capacity ◽  
Leaf Nitrogen ◽  
Exchange Capacity ◽  
Phosphorus And Potassium ◽  
Continuous Use ◽  
Nitrogen Phosphorus

As an alternative to cultivation, repeated yearly applications from 1964 to 1968 of simazine plus or minus amitrole gave satisfactory weed control in sultanas at two sites in the Sunraysia area. The minimum rates needed of simazine per year were 1.3 and 3.3 lb an acre at the lighter and heavier soil sites respectively. There were no differences in residual weed control if amitrole was added to these amounts. Sultana maturity and yield, leaf nitrogen, phosphorus and potassium, and soil organic matter, pH and cation exchange capacity were all unaffected by the herbicide applications.

The fate of 15N-nitrate in a northern peatland impacted by long term experimental nitrogen, phosphorus and potassium fertilization

2010 ◽  
Vol 103 (1-3) ◽  
pp. 281-296 ◽  
Author(s):  
Yangping Xing ◽  
Jill Bubier ◽  
Tim Moore ◽  
Meaghan Murphy ◽  
Nathan Basiliko ◽  
...  
Keyword(s):  
Potassium Fertilization ◽  
Phosphorus And Potassium ◽  
Nitrogen Phosphorus
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