Novel sorbent shows promising financial results on P recovery from sludge water

Chemosphere ◽  
2021 ◽  
pp. 130097
Author(s):  
Jana Stávková ◽  
Josef Maroušek
Keyword(s):  
2021 ◽  
Author(s):  
Andrew H Kim ◽  
Anthony C Yu ◽  
Sahar Head El Abbadi ◽  
Katie Lu ◽  
Doreen Chan ◽  
...  

Recovery of struvite at wastewater treatment plants provides a beneficial fertilizer while preventing costly operational issues due to precipitation in pipes, pumps, and digesters. At present, however, sale of struvite...


RSC Advances ◽  
2015 ◽  
Vol 5 (27) ◽  
pp. 21023-21032 ◽  
Author(s):  
Sepideh Khoee ◽  
Zahra Kachoei

Recovery of fracture toughness of a self-healing epoxy adhesive is achieved by using a novel amine nanocontainer.


RSC Advances ◽  
2016 ◽  
Vol 6 (20) ◽  
pp. 16548-16554 ◽  
Author(s):  
Yan Zhao ◽  
Kaini Tang ◽  
Qinqin Liu ◽  
B. Van der Bruggen ◽  
Arcadio Sotto Díaz ◽  
...  

Recovery of chemically degraded cation exchange membranes in a cyclic process.


Author(s):  
David Abulafia

Recovery from the disasters of the twelfth century was slow. It is unclear how deep the recession in the Aegean lands was, but much was lost: the art of writing disappeared, except among the Greek refugees in Cyprus; the distinctive swirling styles of Minoan and Mycenaean pottery vanished, except, again, in Cyprus; trade withered; the palaces decayed. The Dark Age was not simply an Aegean phenomenon. There are signs of disorder as far west as the Lipari islands, for in Sicily the old order came to an end in the thirteenth century amid a wave of destruction, and the inhabitants of Lipari were able to preserve some measure of prosperity only by building strong defences. The power of the Pharaohs weakened; what saved the land of the Nile from further destruction was the falling away of raids from outside, as the raiders settled in new lands, rather than any internal strength. By the eighth century new networks of trade emerged, bringing the culture of the East to lands as far west as Etruria and southern Spain. What is astonishing about these new networks is that they were created not by a grand process of imperial expansion (as was happening in western Asia, under the formidable leadership of the Assyrians), but by communities of merchants: Greeks heading towards Sicily and Italy, consciously or unconsciously following in the wake of their Mycenaean predecessors; Etruscan pirates and traders, emerging from a land where cities were only now appearing for the first time; and, most precociously, the Canaanite merchants of Lebanon, known to the Greeks as Phoinikes, ‘Phoenicians’, and resented by Homer for their love of business and profit. So begins the long history of contempt for those engaged in ‘trade’. They took their name from the purple dye extracted from the murex shellfish, which was the most prized product of the Canaanite shores. Yet the Greeks also recognized the Phoenicians as the source of the alphabet which became the basis of their new writing system; and Phoenicia was the source of artistic models which transformed the art of archaic Greece and Italy in an age of great creative ferment.


Author(s):  
Dennis C. Daley ◽  
Antoine Douaihy

Recovery is a process of change in which clients improve their health and wellness. They set goals to work toward stopping substance use and learn skills to change themselves and their lifestyles so they can live substance-free. There are different paths to recovery, including individual, group, and/or family therapy; engaging in a treatment program such as a residential or nonresidential rehabilitation program; taking medications for addiction to alcohol, opioids, or nicotine; engaging in mutual support programs; participating in chat room discussions or online recovery meetings; using support from other people; and participating in community or self-growth activities that help clients sustain recovery. The goals of this chapter are for clients to begin to set and prioritize their recovery goals and to learn about the different paths and components of recovery.


2018 ◽  
Vol 11 (1) ◽  
pp. 134 ◽  
Author(s):  
Ioná Rech ◽  
Paul Withers ◽  
Davey Jones ◽  
Paulo Pavinato

Phosphate (P) fertilisers produced from waste recycling (e.g., struvite) are considered to be more sustainable than those conventionally produced from the processing of rock P (e.g., highly soluble triple superphosphate, TSP). In this study, we used 33P to monitor struvite dissolution and P diffusion into the soil in comparison to TSP. We evaluated three distinct chemical formulations of struvite, namely: (1) Crystal Green® (CG) produced in an industrial process from sewage sludge; (2) natural struvite (NS) precipitated in swine manure pipelines; and (3) laboratory precipitated struvite (PS) from chicken manure by a new process of P recovery. P diffusion was evaluated in soil columns over a 21-day period. This was complimented with a pot experiment in which wheat and soybean were cultivated in a Eutric Cambisol for 38 days in the presence of either struvite or TSP. P fertilisers were applied at a dose equivalent to 17.5 kg P ha−1 and fertiliser solubility determined by recovering soil solution. All three types of struvite tested showed reduced P solubility and mobility relative to TSP, but a comparison of the three struvites has shown that their P solubilities differed by a factor of two, with the greatest P release (up to 85% of total P) obtained from a struvite recovered from poultry manure and containing other useful nutrients (K, S and Ca). All struvites enhanced crop growth and P uptake of wheat and soybean relative to a nil P control, with up to 80% P recovery compared to TSP. These results further support the more widespread use of struvite as a sustainable source of P to plants despite its low water solubility.


2020 ◽  
Vol Volume 13 ◽  
pp. 831-841
Author(s):  
Fengzhi Yang ◽  
Jialin Ding ◽  
Ruqing Ma ◽  
Wenjie Song ◽  
Yajing Jia ◽  
...  

2018 ◽  
Vol 46 (2) ◽  
pp. 483-490 ◽  
Author(s):  
Dipali Singh ◽  
Ladislav Nedbal ◽  
Oliver Ebenhöh

Phosphorus (P) is an essential non-renewable nutrient that frequently limits plant growth. It is the foundation of modern agriculture and, to a large extent, demand for P is met from phosphate rock deposits which are limited and becoming increasingly scarce. Adding an extra stroke to this already desolate picture is the fact that a high percentage of P, through agricultural runoff and waste, makes its way into rivers and oceans leading to eutrophication and collapse of ecosystems. Therefore, there is a critical need to practise P recovery from waste and establish a circular economy applicable to P resources. The potential of microalgae to uptake large quantities of P and use of this P enriched algal biomass as biofertiliser has been regarded as a promising way to redirect P from wastewater to the field. This also makes the study of molecular mechanisms underlying P uptake and storage in microalgae of great interest. In the present paper, we review phosphate models, which express the growth rate as a function of intra- and extracellular phosphorus content for better understanding of phosphate uptake and dynamics of phosphate pools.


2020 ◽  
Vol 71 (9) ◽  
pp. 795 ◽  
Author(s):  
Therese M. McBeath ◽  
Evelina Facelli ◽  
Courtney A. E. Peirce ◽  
Viran Kathri Arachchige ◽  
Michael J. McLaughlin

The ability to utilise foliar-applied phosphorus (P) as a strategy to increase the P status and yield of grain crops grown in dryland regions with variable climates is attractive. Several P formulations with varying pH, accompanying cations and adjuvants were tested for their effectiveness as foliar fertilisers for wheat (Triticum aestivum L.) plants, first under controlled and then under field conditions. Experiments under controlled conditions suggested that several formulations with specific chemistries offered promise with respect to wheat fertiliser-P recovery and biomass responses. These formulations were then evaluated in two field experiments, and although wheat grown at the sites showed substantive responses to soil-applied P, there was no significant grain-yield response to foliar-applied P. Following the limited responses to foliar-applied fertiliser in the field, we used an isotopic dilution technique to test the hypothesis that the variation in responses of wheat to foliar addition of P could be explained by a mechanism of substitution, whereby root P uptake is downregulated when P is taken up through the leaves, but this was proven not to be the case. We conclude that foliar P application cannot be used as a tactical fertiliser application to boost grain yield of wheat in dryland regions.


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