Release behavior of heavy metals during treatment of dredged sediment by microwave-assisted hydrogen peroxide oxidation

Wang, Lele; Yuan, Xingzhong; Zhong, Hua; Wang, Hou; Wu, Zhibin; Chen, Xiaohong; Zeng, Guangming

doi:10.1016/j.cej.2014.07.098

Cited by 35 publications

(3 citation statements)

References 33 publications

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“…Most heavy metals are discharged into water environment by human activities, and then transferred to the sediments gradually via physical, chemical and biological process [ 4 , 5 ]. Furthermore, sediment heavy metals might be released into water again when environmental conditions (such as pH, Eh and salinity) of the sediment–water interface changed [ 6 , 7 , 8 ]. Thus, heavy metal content in sediments is regarded as a key indicator of aquatic environmental quality.…”

Section: Introductionmentioning

confidence: 99%

Spatial Distribution, Chemical Fraction and Fuzzy Comprehensive Risk Assessment of Heavy Metals in Surface Sediments from the Honghu Lake, China

Xiao

Liu

et al. 2018

IJERPH

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Spatial concentrations and chemical fractions of heavy metals (Cr, Cu, Pb, Zn and Cd) in 16 sampling sites from the Honghu Lake were investigated using an atomic absorption spectrophotometer and optimized BCR (the European Community Bureau of Reference) three-stage extraction procedure. Compared with the corresponding probable effect levels (PELs), adverse biological effects of the studied five sediment metals decreased in the sequence of Cr > Cu > Zn > Pb > Cd. Geo-accumulation index (Igeo) values for Cr, Cu, Pb and Zn in each sampling site were at un-contamination level, while the values for Cd varied from un-contamination level to moderate contamination level. Spatially, the enrichment degree of Cd in lower part of the South Lake, the west part of the North Lake and the outlet were higher than the other parts of Honghu Lake. For metal chemical fractions, the proportions of the acid-extractable fraction of five metal contents were in the descending order: Cd, Cu, Zn, Pb and Cr. Cd had the highest bioaccessibility. Being the above indexes focused always on heavy metals’ total content or chemical fraction in deterministic assessment system, which may confuse decision makers, the fuzzy comprehensive risk assessment method was established based on PEI (Potential ecological risk index), RAC (Risk assessment code) and fuzzy theory. Average comprehensive risks of heavy metals in sediments revealed the following orders: Cd (considerable risk) > Cu (moderate risk) > Zn (low risk) > Pb > Cr. Thus, Cd and Cu were determined as the pollutants of most concern. The central part of South Honghu Lake (S4, S5, S6, S9, S12 and S14), east part of the North Honghu Lake (S1) and outlet of outlet of the Honghu Lake (S10) were recommended as the priority control areas. Specifically, it is necessary to pay more attention to S1, S4, S5, S6, S9 and S16 when decision making for their calculated membership values (probabilities) of adjacent risk levels quite close.

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Section: Introductionmentioning

confidence: 99%

Spatial Distribution, Chemical Fraction and Fuzzy Comprehensive Risk Assessment of Heavy Metals in Surface Sediments from the Honghu Lake, China

Xiao

Liu

et al. 2018

IJERPH

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“…The adverse influence on the water quality and life conditions for channel biota can be affected based on the detected concentrations of macronutrients exceeding their content in the surrounding arable land by a few folds owing to the interactive processes between the water and sediment material. Clearly, environmental issues dealing with dredged sediment utilization in road construction is a highly relevant topic [2,[18][19][20][21][22][23][24][25][26] and needs to be addressed when analyzing the potential use of any kind of new material, particularly one usually classified as waste.…”

Section: Instructionsmentioning

confidence: 99%

Special-Purpose River-Port Sediment Valorization as Road Construction Material Emphasising Environmental Aspects

Barišić

Marković

Vukićević

et al. 2020

Romanian Journal of Transport Infrastructure

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Special-purpose river port sediment was investigated for its potential use as a road construction material. Sediment samples were extracted from three locations in three small river ports, and detailed laboratory research was conducted to determine its basic mechanical properties and characteristics that can potentially have an adverse influence in a roadside environment. The results of the research conducted indicate that there is a need for systematic monitoring of the quality and quantity of sediment in special-purpose river ports of the Danube River Basin to maintain its mobility and prevent flooding. The basic engineering characteristics (Proctor elements, Atterberg limits, California bearing ratio, and unconfined compressive strength) determined represent the good potential of the sediment samples tested herein for use in road construction. In addition, the chemical characteristics tested indicate the need for detailed analyses of the potential environmental risk before application in civil engineering structures

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“…Diversas técnicas são empregadas na remoção de íons metálicos presentes em solução aquosa, tais como adsorção [10], coagulação/flotação [11], oxidação [12], extração por solvente [13], ultrafiltração [14], deposição eletroquímica [15], entre outros. Dentre elas, a adsorção é amplamente utilizada para a remoção de metais e também é uma técnica considerada econômica e ambientalmente acessível.…”

Section: Introductionunclassified

Avaliação do potencial sortivo da casca de laranja quimicamente e termicamente modificada na remoção de metais em solução aquosa

Souza

Cechinel

Peterson

2019

BJD

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Release behavior of heavy metals during treatment of dredged sediment by microwave-assisted hydrogen peroxide oxidation

Cited by 35 publications

References 33 publications

Spatial Distribution, Chemical Fraction and Fuzzy Comprehensive Risk Assessment of Heavy Metals in Surface Sediments from the Honghu Lake, China

Spatial Distribution, Chemical Fraction and Fuzzy Comprehensive Risk Assessment of Heavy Metals in Surface Sediments from the Honghu Lake, China

Special-Purpose River-Port Sediment Valorization as Road Construction Material Emphasising Environmental Aspects

Avaliação do potencial sortivo da casca de laranja quimicamente e termicamente modificada na remoção de metais em solução aquosa

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