The Efficiency of P-Removal from Natural Waters with Sorbents Placed in Water Permeable Nonwovens

Burska, Dorota; Pryputniewicz-Flis, Dorota; Bańkowska-Sobczak, Agnieszka; Brenk, Grzegorz; Woszczyk, Tomasz

doi:10.1088/1755-1315/362/1/012099

Cited by 3 publications

(1 citation statement)

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“…In summarizing the main advantages of on-site and pilot-scale composite materials' application, it is signified that LMB can result in the quick and effective removal of soluble phosphorus from eutrophic water bodies, the low levels of the soluble phosphorus at water bodies in the long-run [23], the high removal rates of dissolved phosphorus (DP) concentrations at various types of water bodies [28], the short term compositional alterations in sediment and elementary P-fractions on sediment cores sampled at different times before and after LMB application to a man-made reservoir, where LMB can bind decreasingly P mobile present upon increasing the height of top sediment, while no affecting the sediment P-fractions [36], as well as promising LMP applicability in alleviating terrestrial eutrophication due to building materials' contemplated, along with the necessity of developing calculating methods of the eutrophication potential [10]. In a similar study, Burska et al [37] evaluated the possibility of using water-permeable nonwovens bags as P-sorbent carriers. Such a bag was filled with the sorbing material and when placed in the water column, sorbent present in the bag reduced orthophosphate (PO 4 3− ) concentration in the water due to the water inflow into the bag.…”

Section: Introductionmentioning

confidence: 88%

Novel Composite Materials for Lake Restoration: A New Approach Impacting on Ecology and Circular Economy

et al. 2020

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The purpose of this study is to promote a new way of application composite materials to restore eutrophic waters. A new sustainable way of application is based on the “teabag” method, in which materials were placed in water-permeable bags and immersed in the water column in order to sorb phosphate—one of the main contributory element for the eutrophication problem. Particularly, the two composites materials of Phoslock™ (lanthanum-modified bentonite, LMB) and Bephos™ (Fe-modified bentonite, f-MB) were tested and bench-scale batch experiments were employed to investigate their sorption efficiency in the forms of slurry and teabag. The adsorption kinetics and the relevant adsorption isotherms were deployed, while the effect of the materials on turbidity and their aging were also investigated. Experimental results showed that Phoslock™ and Bephos™ (as teabag), being applied at initial concentration range: 0.05–5 mg/L, they sustained a maximum adsorption capacity of 7.80 mg/g and 25.1 mg/g, respectively, which are considered sufficient rates for P concentrations reported at natural aquatic ecosystems. At the same time this new method did not cause turbidity in the water column, since the material was not released into the water, thus, preventing potential harmful consequences for the living organisms. Moreover, the “teabag” method prevents the material to cover the lake bottom, avoiding the phenomenon of smothering of benthos. Βy teabag method, the materials can be collected for further applicability as soil improver or crops fertilizer. Finally, it was argued that the possibility to recycle LMB and f-MB materials for agricultural use is of paramount importance, sustaining also positive impacts on sustainable ecology and on the routes of circular economy (CE).

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