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Die traditionelle Kultur Chinas: Kompendium
Colloids as a sink for certain pharmaceuticals in the aquatic environment
In: Environmental science and pollution research: ESPR, Band 17, Heft 4, S. 898-907
ISSN: 1614-7499
Polystyrene and low-density polyethylene pellets are less effective in arsenic adsorption than uncontaminated river sediment
In: Environmental science and pollution research: ESPR, Band 30, Heft 42, S. 95810-95827
ISSN: 1614-7499
AbstractThe adsorption process of inorganic arsenic (As) plays an important role in its mobility, bioavailability, and toxicity in the river environment. In this work, the adsorption of dissolved arsenite (As(III)) and arsenate (As(V)) by microplastics (MPs) pellets (polystyrene (PS) and low-density polyethylene (LDPE)), river sediment, and their mixture were investigated to assess the adsorption affinities and mechanism. The adsorption kinetics showed slow and mild rising zones from the natural behavior of the chemical adsorption. The results indicated that both MP characteristics and water properties played a significant role in the adsorption behavior of inorganic As species. The As adsorption equilibrium was modeled well by both Langmuir and Freundlich isotherms and partly fitted with the Sips model suggesting that both mono-layer and multi-layer adsorption occurred during adsorption The spontaneous adsorption process for both As(III) and As(V) was evidenced by the adsorption thermodynamics. The maximum adsorption capacities of As(III) and As(V) reached 143.3 mg/kg and 109.8 mg/kg on PS in deionized water, which were higher than those on sediment-PS mixture (119.3 mg/kg, 99.2 mg/kg), which were all lower than on sediment alone (263.3 mg/kg, 398.7 mg/kg). The Fourier transform infrared spectroscopy analysis identified that As(III) and As(V) interaction with sediment surface functional groups was the main adsorption mechanism from surface complexation and coordination. Two functional groups of polystyrene (-NH2, -OH) were mainly involved in the adsorption of inorganic As species on PS, while -COO- and -OH functional groups contributed to the adsorption mechanism of inorganic As species on LDPE. The findings provide valuable insight on the adsorption behavior and mechanisms of As(III) and As(V) in river systems in the presence of MPs particles. Both PS and LDPE were shown to be less effective than river sediment in the adsorption of As species from water, which provides a different perspective in understanding the scale of MPs impact in pollutant transport in the aquatic environment.
Graphical Abstract
Impact of treated urban wastewater for reuse in agriculture on crop response and soil ecotoxicity
In: Environmental science and pollution research: ESPR, Band 23, Heft 16, S. 15877-15887
ISSN: 1614-7499
Biochemical and physiological responses of halophilic nanophytoplankton (Dunaliella salina) from exposure to xeno-estrogen 17α-ethinylestradiol
In: Environmental science and pollution research: ESPR, Band 24, Heft 8, S. 7392-7402
ISSN: 1614-7499
Tracing historical changes, degradation, and original sources of airborne polycyclic aromatic hydrocarbons (PAHs) in Jilin Province, China, by Abies holophylla and Pinus tabuliformis needle leaves
In: Environmental science and pollution research: ESPR, Band 29, Heft 5, S. 7079-7088
ISSN: 1614-7499