Potash from Kelp. V--The Applicability of Kelpchar as a Bleaching and Purifying Agent

Turrentine, J. W.; Tanner, Helen

doi:10.1021/ie50145a014

Cited by 2 publications

(2 citation statements)

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“…Turrentine (Howe, 1913;GC Spencer, 1920;G.C. Spencer, 1920;Tanner, 1922;Turrentine and Tanner, 1922;Turrentine et al, 1923;Turrentine and Shoaff, 1919;Turrentine and Shoaff, 1921) and aided by massive public investments, probably drawing from the earlier relative success of the Scottish industry and because of the pressing need of the USA to become self-sufficient. As a matter of fact, this was the only substantial potash project under government development (Turrentine and Shoaff, 1919).…”

Section: The Nebraskan Brine Industrymentioning

confidence: 99%

Historical and technical developments of potassium resources

Ciceri

Manning

Allanore

2015

Science of The Total Environment

130

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The mining of soluble potassium salts (potash) is essential for manufacturing fertilizers required to ensure continuous production of crops and hence global food security. As of 2014, potash is mined predominantly in the northern hemisphere, where large deposits occur. Production tonnage and prices do not take into account the needs of the farmers of the poorest countries. Consequently, soils of some regions of the southern hemisphere are currently being depleted of potassium due to the expansion and intensification of agriculture coupled with the lack of affordable potash. Moving away from mined salts towards locally available resources of potassium, such as K-bearing silicates, could be one option to improve this situation. Overall, the global potash production system and its sustainability warrant discussion. In this contribution we examine the history of potash production, and discuss the different sources and technologies used throughout the centuries. In particular, we highlight the political and economic conditions that favored the development of one specific technology over another. We identified a pattern of needs driving innovation. We show that as needs evolved throughout history, alternatives to soluble salts have been used to obtain K-fertilizers. Those alternatives may meet the incoming needs of our century, providing the regulatory and advisory practices that prevailed in the 20 th century are revised.

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Section: The Nebraskan Brine Industrymentioning

confidence: 99%

Historical and technical developments of potassium resources

Ciceri

Manning

Allanore

2015

Science of The Total Environment

130

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“…In 2019, brown seaweed represented 47.3% of the world’s seaweed cultivation [ 4 ]. Over time, the industrial utilisation of seaweed biomass has evolved from using beach-cast seaweeds as fertilisers and linen bleaching [ 5 , 6 ], to employing them as sources of natural bioactive compounds due to their strong antioxidant potential [ 7 ].…”

Section: Introductionmentioning

confidence: 99%

Effect of Deployment and Harvest Date on Growth and High-Value Compounds of Farmed Alaria esculenta

et al. 2023

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Alaria esculenta is a brown seaweed farmed in many European countries for its biomass rich in useful bio compounds. This study aimed to identify the optimal growing season to maximise biomass production and quality. The seeded longlines of the brown seaweed were deployed in the southwest of Ireland in October and November 2019 and samples of the biomass were harvested in different dates, between March and June 2020. Biomass gain and composition, phenolic and flavonoid content (TPC and TFC) and biological activities (antioxidant and anti-hypertensive activities) of seaweed extracts prepared with Alcalase were evaluated. The biomass production was significantly higher for the line deployed in October (>20 kg·m−1). In May and June, an increasing amount of epiphytes was observed on the surface of A. esculenta. The protein content of A. esculenta varied between 11.2 and 11.76% and fat content was relatively low (1.8–2.3%). Regarding the fatty acids profile, A. esculenta was rich in polyunsaturated fatty acids (PUFA), especially in eicosapentaenoic acid (EPA). The samples analysed were very rich in Na, K, Mg, Fe, Mn, Cr and Ni. The content of Cd, Pb Hg was relatively low and below the maximum levels allowed. The highest TPC and TFC were obtained in extracts prepared with A. esculenta collected in March and levels of these compounds decreased with time. In general, the highest radical scavenging activities (ABTS and DPPH), as well as chelating activities (Fe2+ and Cu2+) were observed in early spring. Extracts from A. esculenta collected in March and April presented higher ACE inhibitory activity. The extracts from seaweeds harvested in March exhibited higher biological activity. It was concluded that an earlier deployment allows for maximising growth and harvest of biomass earlier when its quality is at the highest levels. The study also confirms the high content of useful bio compounds that can be extracted from A. esculenta and used in the nutraceutical and pharmaceutical industry.

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Potash from Kelp. V--The Applicability of Kelpchar as a Bleaching and Purifying Agent

Cited by 2 publications

References 0 publications

Historical and technical developments of potassium resources

Historical and technical developments of potassium resources

Effect of Deployment and Harvest Date on Growth and High-Value Compounds of Farmed Alaria esculenta

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