| enzyme polymorphism and cyclic parthenogenesis in daphnia magna. i. selection and clonal diversity. | genotype frequencies and fecundities were recorded over a period of two years for three polymorphic enzyme loci (est, mdh and got) in a parthenogenetic natural population of daphnia magna straus (crustacea: cladocera). there was a large excess of heterozygotes at each locus, and some nonrandom association between loci, although 29 different three-locus genotypes were detected. there were small but significant changes in genotype frequencies that did not follow any clear seasonal cycles or overal ... | 1979 | 535726 |
| acute toxicity studies of surfactants to daphnia magna and daphnia pulex. | | 1979 | 231941 |
| neuronal connectivity patterns in the compound eyes of artemia salina and daphnia magna (crustacea: branchiopoda). | the neuronal types and patterns in the visual system of the species artemia salina and daphina magna have been studied with the golgi method and electron microscopy. the lamina contains five classes of neurons: photoreceptor axons, monopolar, centrifugal, tangential and amacrine neurons. the terminals of the receptor axons are distributed in two (a. salina) or three (d. magna) layers. the dilated terminals have an extensive and wide array of fine branches. one axon from each ommatidium bypasses ... | 1978 | 688341 |
| [effect of thiodan on various physiological processes in daphnia magna (crustacea)]. | | 1978 | 116352 |
| characterization of arsenic compounds formed by daphnia magna and tetraselmis chuii from inorganic arsenate. | experiments to grow tetraselmis chuii (a marine alga) and daphnia magna in the presence of inorganic arsenate are described. the algae incorporate arsenic rather efficiently and form a lipid-soluble organic arsenic compound. t. chuii has been successfully mass cultured in a medium containing 10 ppm arsenic as arsenate. daphnia magna was cultured in a medium containing 74as-labeled h3aso4 and 1 ppm na2haso4 expressed as arsenic. the arsenic metabolites were extracted with a chloroform-methanol so ... | 1977 | 908314 |
| a 96-hour sediment bioassay of duluth and superior harbor basins (minnesota) using hexagenia limbata, asellus communis, daphnia magna, and pimephales promelas as test organisms. | | 1977 | 890151 |
| toxic interaction of mixtures of two coal conversion effluent components (resorcinol and 6-methylquinoline) to daphnia magna. | | 1977 | 836975 |
| the toxicity of benomyl, thiophanate-methyl, and bcm to four freshwater organisms. | the ec50 or lc50 values after a 2-day exposure of the three fungicides benomyl, thiophanate-methyl and bcm, have been determined using four freshwater organisms: chlorella pyrenoidosa, daphnia magna, lebistes reticulatus and salmo gairdneri. the influence of bcm on the reproductive capacity of daphnia was also investigated and from these data provisional ecological limit was established. | 1976 | 963326 |
| enhancement of algal growth and productivity by grazing zooplankton. | colonies of the common planktonic green alga, sphaerocystis schroeteri, are only partially disrupted and assimilated by daphnia magna, a natural predator. the daphnia break up the outer protective gelatinous sheath that surrounds sphaerocystis colonies, but most of the algal cells emerge from daphnia guts intact and in viable condition. during gut passage, these viable cells take up nutrients, such as phosphorus, both from algal remains and from daphnia metabolites. this nutrient supply stimulat ... | 1976 | 17739838 |
| the fine structure of the carapace integument of daphnia magna straus (crustacea branchiopoda). | the structure of the two integumental layers comprising the carapace of female d. magna was examined at several points through the molt cycle. the epicuticle and procuticle are simple in organisation; pore canalsare absent but intracuticular fibres are present, forming complexes with invaginations of the epidermal plasma membrane similar to such complexes described in the literature for othe arthropods. the epidermis consist almost entirely of cuticle-secreting cells. secretion of the new cuticl ... | 1976 | 954050 |
| enzyme variability in natural populations of daphnia magna. iv. ecological differentiation and frequency changes of genotypes at audley end. | genotypic frequencies were analysed for two years in a permanent population of the cladoceran crustacean, daphnia magna, which was polymorphic for an esterase and for malate dehydrogenase. large temporal changes in genotypic frequencies occurred at both loci. there was no evidence of a seasonal pattern in the frequency changes. in most samples, genotypes at the two enzyme loci were non-randomly associated; these associations showed temporal changes. on some occasions marked spatial heterogeneity ... | 1976 | 1064586 |
| the short-term toxicity of some feed additives to different freshwater organisms. | the short-term toxicity (ec50 respectively lc50 after 2 or 4 days) of 13 feed additives was determined to 4 freshwater organisms of different trophical levels: chlorella pyrenoidosa, daphnia magna, lebistes reticulatus and salmo gairdneri. the most toxic (lc(ec)50 less than 1 mg/1) were robenidine (to all tested organisms) and stenorol (to daphnia); moderately toxic (1 less than lc(ec)50 less than 10 mg/1) was pyrimethamine. amprolium, ethopabate, furazolidone and zoalene proved to be little tox ... | 1976 | 938765 |
| toxicity of 5-hydroxymethylfurfural and furfural to daphnia magna. | | 1975 | 1174284 |
| [selection of strays from the group by predators during prey]. | equally sated three-spined sticklebacks (gasterosteus aculeatus) that had a free view of stray individuals and of a swarm of daphnia magna preferentially preyed upon the strays; the resulting risk to the strays increased with swarm density (a leads to c leads to e in fig. 1). this applied also to situations with constant swarm numbers but varied density (a leads to b, d leads to e). the results from two experiments with equal swarm density (b/e, c/d) suggest selection to be affected also by swar ... | 1975 | 1229771 |
| effects of pcb (aroclor 1254) and p'p" ddt on production and survival of daphnia magna strauss. | | 1975 | 805612 |
| ecological differences between genotypes in a natural population of daphnia magna. | | 1974 | 4532099 |
| aqueous chlorination and ozonation studies. i. structure-toxicity correlations of phenolic compounds to daphnia magna. | | 1974 | 4430014 |
| enzyme variability in natural populations of daphnia magna. 3. genotypic frequencies in intermittent populations. | in temporary habitats populations of the cyclical parthenogen, daphnia magna, are re-established each year from sexual eggs and reproduce parthenogenetically for two or at most three generations. the genetic effects of this breeding system have been investigated by analyzing allozyme frequencies in nineteen intermittent populations.-genotypic frequencies at polymorphic loci were ordinarily found to be in good agreement with hardy-weinberg proportions and disequilibria between loci were not obser ... | 1974 | 4847155 |
| phenotype variability of lactate dehydrogenase in daphnia magna. | | 1973 | 4754411 |
| structure and development of neuronal connections in isogenic organisms: cellular interactions in the development of the optic lamina of daphnia. | some details of the growth and initial cellular interactions of optic nerve axons were examined in a parthenogenetic clone of daphnia magna. results are summarized as follows: (i) the final structure of the optic lamina is dependent upon interactions between growing optic nerve fibers and optic lamina neuroblasts closest to the midplane of the animal, which trigger the morphological differentiation of the neuroblasts; the specificity of connections is achieved by well-defined sequences of cell m ... | 1973 | 4510287 |
| structure and development of neuronal connections in isogenic organisms: variations and similarities in the optic system of daphnia magna. | it is readily apparent upon examination and comparison of organisms of the same and related species that to a large extent genes control morphological features. one means to ascertain the role and degree of genetic control is to study in detail the anatomy and development of a particular structure, say an identifiable neuron, in a population with a fixed genome, and at different stages of morphogenesis. the small crustacean, daphnia, is well suited for this type of study, since it reproduces par ... | 1973 | 4509664 |
| an autoregressive model of population density change in an experimental population of daphnia magna. | the usefulness of autoregression equations as empirical models of population change in an experimental population of daphnia magna was studied. a two-term and a ten-term autoregression equation were fit to the data. tests of the significance of the terms of the ten-term equation were carried out, and the fit of the second-order autoregression tested. the problem of autocorrelated error terms is discussed. the ability of the autoregressions to generate the observed changes in population density o ... | 1972 | 28306761 |
| inheritance during parthenogenesis in daphnia magna. | natural populations of daphnia magna have been found which are polymorphic for electrophoretic variants of supernatant malic dehydrogenase, esterase, and alkaline phosphatase. using these enzyme variants as genetic markers it has been possible to demonstrate the absence of recombination during parthenogenetic reproduction. genetic uniformity is expected within parthenogenetic clones derived from a single female. | 1972 | 5055130 |
| natural selection for enzyme variants among parthenogenetic daphnia magna. | | 1972 | 5038817 |
| a circadian rhythm in daphnia magna. | | 1971 | 28310975 |
| purification and properties of blood hemoglobin from the fresh-water cladocera, moina macrocopa and daphnia magna. | | 1971 | 5553981 |
| dixenic culture of daphnia magna, straus. | | 1970 | 5494234 |
| sites of presumed neurosecretory activity in daphnia magna straus. | | 1969 | 5363279 |
| the effect of ultrasonic irradiation on the survival of daphnia magna. | | 1968 | 5673686 |
| the carotenoid pigments of daphnia magna straus. ii. aspects of pigmentary metabolism. | | 1968 | 5645509 |
| the carotenoid pigments of daphnia magna straus. i. the pigments of animals fed . chlorella pyrenoidosa and pure carotenoids. | | 1968 | 4296346 |
| use of daphnia magna for the microbioassay of pesticides. ii. comparison of microbioassay with gas chromatography for analysis of pesticide residues in plant extracts. | | 1967 | 6054436 |
| use of daphnia magna for the microbioassay of pesticides. i. development of standardized techniques for rearing daphnia and preparation of dosage-mortality curves for pesticides. | | 1967 | 6054435 |
| conversion of carotenoids into vitamins a(1) and a(2) in two species of freshwater fish. | 1. examination of two zooplankton species predominating in fish ponds, daphnia magna and chironomus larvae, revealed the presence of alpha- and beta-carotene, echinenone, canthaxanthin and 3-hydroxy-4-oxo-beta-carotene in daphnia, and beta-carotene and cryptoxanthin ester in chironomus. no specific provitamins a(2) (containing a 3,4-dehydro-beta-ionone ring) were detected. 2. guppies (lebistes reticulatus) and platies (xiphophorus variatus) were found to form vitamin a from beta-carotene and fro ... | 1966 | 16742455 |
| the detection of acute toxicity with daphnia magna. | | 1966 | 5971937 |
| nucleotides in the encysted embryos of daphnia magna. | | 1966 | 5961275 |
| metschnikowiella zobellii sp.nov. and m. krissii sp.nov., two yeasts from the pacific ocean pathogenic for daphnia magna. | | 1961 | 13924640 |
| [daphnia magna as test medium for demonstration of contact insecticides]. | | 1952 | 13046996 |
| a method for biologic standardization of veratrum viride based on the survival time of daphnia magna. | | 1951 | 14850361 |
| [effect of temporary modification of salinity on the multiplication of daphnia magna]. | | 1951 | 14840309 |
| effect of heparin and of vitamin k on the life span of daphnia magna. | | 1950 | 14781169 |
| correlation of the aquarium goldfish toxicities of some phenols, quinones, and other benzene derivatives with their inhibition of autooxidative reactions. | hydroquinone when added to the aquarium water was found to be about a hundred times more toxic than phenol, to goldfish (and to daphnia magna), but is only about twice as toxic when injected into fish or mammals. tertiarybutyl catechol shows a similar high toxicity in the aquarium, while the toxicity of catechol, resorcinol, and pyrogallol approaches more closely that of phenol. as the substances of high aquarium toxicity are known to inhibit many oxidative and polymerizing autocatalytic "chain ... | 1949 | 18131870 |
| the toxicity thresholds of various sodium salts determined by the use of daphnia magna. | | 1946 | 21011596 |
| on temperature characteristics for different processes in the same organism. | the temperature characteristics (micro) for two activities (heart beat and respiratory movements) studied simultaneously in the same individual organism (daphnia magna) were always found to differ in magnitude. the type of graph obtained when the frequency of these movements was plotted according to the arrhenius equation was also distinctly different for each activity. the organism therefore does not determine a uniform magnitude of the temperature characteristic for each of its activities; the ... | 1932 | 19872712 |
| sex differences in mortality and metabolic activity in daphnia magna. | | 1926 | 17817343 |
| sbr treatment of tank truck cleaning wastewater: sludge characteristics, chemical and ecotoxicological effluent quality. | a lab-scale activated sludge sequencing batch reactor (sbr) was used to treat tank truck cleaning (ttc) wastewater with different operational strategies (identified as different stages). the first stage was an adaptation period for the seed sludge that originated from a continuous fed industrial plant treating ttc wastewater. the first stage was followed by a dynamic reactor operation based on the oxygen uptake rate (our). thirdly, dynamic sbr control based on our treated a daily changing influe ... | 2017 | 28737080 |
| toxic potential of the emerging contaminant nicotine to the aquatic ecosystem. | nicotine is a "life-style compound" widely consumed by human populations and, consequently, often found in surface waters. this fact presents a concern for possible effects in the aquatic ecosystems. the objective of this study was to assess the potential lethal and sublethal toxicity of nicotine in aquatic organisms from different trophic levels (vibrio fischeri, pseudokirchneriella subcapitata, thamnocephalus platyurus, and daphnia magna). the bioassays were performed by exposing the organisms ... | 2017 | 28474259 |
| a historical perspective of nutrient change impact on an infectious disease in daphnia. | changes in food quality can play a substantial role in the vulnerability of hosts to infectious diseases. in this study, we focused on the genetic differentiation of the water flea daphnia magna towards food of different quality (by manipulating c:n:p ratios) and its impact on the interaction with a virulent infectious disease, "white fat cell disease (wfcd)". via a resurrection ecology approach, we isolated two daphnia subpopulations from different depths in a sediment core, which were exposed ... | 2017 | 28845593 |
| simulated climate change, epidemic size, and host evolution across host-parasite populations. | climate change is causing warmer and more variable temperatures as well as physical flux in natural populations, which will affect the ecology and evolution of infectious disease epidemics. using replicate seminatural populations of a coevolving freshwater invertebrate-parasite system (host: daphnia magna, parasite: pasteuria ramosa), we quantified the effects of ambient temperature and population mixing (physical flux within populations) on epidemic size and population health. each population w ... | 2017 | 28544153 |
| toxicity effects of functionalized quantum dots, gold and polystyrene nanoparticles on target aquatic biological models: a review. | nano-based products are widespread in several sectors, including textiles, medical-products, cosmetics, paints and plastics. nanosafety and safe-by-design are driving nanoparticle (np) production and applications through np functionalization (@nps). indeed, @nps frequently present biological effects that differ from the parent material. this paper reviews the impact of quantum dots (qds), gold nanoparticles (aunps), and polystyrene-cored nps (psnps), evidencing the role of np functionalization i ... | 2017 | 28858240 |
| daphnia magna and xenopus laevis as in vivo models to probe toxicity and uptake of quantum dots functionalized with gh625. | the use of quantum dots (qds) for nanomedicine is hampered by their potential toxicologic effects and difficulties with delivery into the cell interior. we accomplished an in vivo study exploiting daphnia magna and xenopus laevis to evaluate both toxicity and uptake of qds coated with the membranotropic peptide gh625 derived from the glycoprotein h of herpes simplex virus and widely used for drug delivery studies. we evaluated and compared the effects of qds and gh625-qds on the survival, uptake ... | 2017 | 28435254 |
| elimination of fungicides in biopurification systems: effect of fungal bioaugmentation on removal performance and microbial community structure. | bioaugmentation with ligninolytic fungi represents a potential way to improve the performance of biomixtures used in biopurification systems for the treatment of pesticide-containing agricultural wastewater. the fungus trametes versicolor was employed in the bioaugmentation of a biomixture to be used in the simultaneous removal of seven fungicides. liquid cultures of the fungus were able to remove tebuconazole, while no evidence of carbendazim, metalaxyl and triadimenol depletion was found. when ... | 2017 | 28818589 |
| removal of pesticides and ecotoxicological changes during the simultaneous treatment of triazines and chlorpyrifos in biomixtures. | biopurification systems constitute a biological approach for the treatment of pesticide-containing wastewaters produced in agricultural activities, and contain an active core called biomixture. this work evaluated the performance of a biomixture to remove and detoxify a combination of three triazine herbicides (atrazine/terbuthylazine/terbutryn) and one insecticide (chlorpyrifos), and this efficiency was compared with dissipation in soil alone. the potential enhancement of the process was also a ... | 2017 | 28494353 |
| towards single egg toxicity screening using microcoil nmr. | planar microcoils with diameter ranging from 20 to 1000 μm i.d. (130-1130 μm o.d.) are evaluated for their applications in nmr spectroscopy. the coils are first overfilled with a standard sucrose solution and compared against each other. coils with smaller i.d. (≤100 μm) perform extremely well. one hypothesis is that as the coils get smaller the volume occupied by the copper turns increases relative to the open i.d.; as such a large proportion of the sample is brought in close proximity to the c ... | 2017 | 29171607 |
| development of thresholds of excess toxicity for environmental species and their application to identification of modes of acute toxic action. | the acute toxicity of organic pollutants to fish, daphnia magna, tetrahymena pyriformis, and vibrio fischeri was investigated. the results indicated that the toxicity ratio (tr) threshold of log tr =1, which has been based on the distribution of toxicity data to fish, can also be used to discriminate reactive or specifically acting compounds from baseline narcotics for daphnia magna and vibrio fischeri. a log tr=0.84 is proposed for tetrahymena pyriformis following investigation of the relations ... | 2018 | 29127803 |
| bioaccumulation of 14c-labeled graphene in an aquatic food chain through direct uptake or trophic transfer. | the growing applications of graphene materials warrant a careful evaluation of their environmental fate in aquatic food webs. escherichia coli (bacteria), tetrahymena thermophila (protozoa), daphnia magna (zooplankton), and danio rerio (vertebrate) were used to build aquatic food chains to investigate the waterborne uptake and trophic transfer of 14c-labeled graphene. body burden factor (bbf) and trophic transfer factor (ttf) were analyzed for each organism and food chain to assess the bioaccumu ... | 2018 | 29265813 |
| performance of an integrated system combining microalgae and vertical flow constructed wetlands for urban wastewater treatment. | the present study investigated the performance of an integrated system, combining the sequential use of microalgae (ma) and vertical flow constructed wetland (vfcw) for the treatment of wastewaters produced at a university campus. ecotoxicity and phytotoxicity assays were performed using respectively daphnia magna and lactuca sativa, whereas the genotoxicity of the wastewaters was assessed by using d. magna and allium cepa. the results revealed that the major environmental impacts of the studied ... | 2017 | 28710729 |
| evaluation of toxic and genotoxic potential of a wet gas scrubber effluent obtained from wooden-based biomass furnaces: a case study in the red ceramic industry in southern brazil. | red ceramic industry in southern brazil commonly uses wood biomass as furnace fuel generating great amounts of gas emissions and ash. to avoid their impact on atmospheric environment, wet scrubbing is currently being applied in several plants. however, the water leachate formed could be potentially toxic and not managed as a common water-based effluent, since the resulting wastewater could carry many toxic compounds derived from wood pyrolysis. there is a lack of studies regarding this kind of e ... | 2017 | 28551583 |
| ecotoxicological potential of the biocides terbutryn, octhilinone and methylisothiazolinone: underestimated risk from biocidal pathways? | the use of biocides by industry, agriculture and households increased throughout the last two decades. many new applications with known substances enriched the variety of biocidal pollution sources for the aquatic environment. while agriculture was the major source for a long time, leaching from building facades and preservation of personal care and cleaning products was identified as new sources in the last few years. with the different usage forms of biocidal products the complexity of legisla ... | 2018 | 29306832 |
| acute toxicity of six neonicotinoid insecticides to freshwater invertebrates. | neonicotinoids are a group of insecticides commonly used in agriculture. due to their high water solubility, neonicotinoids can be transported to surface waters and have the potential to be toxic to aquatic life. the present study assessed and compared the acute (48 or 96 h) toxicity of 6 neonicotinoids (acetamiprid, clothianidin, dinotefuran, imidacloprid, thiacloprid, and thiamethoxam) to 21 laboratory-cultured and field-collected aquatic invertebrates spanning 10 aquatic arthropod orders. tes ... | 2018 | 29336495 |
| feeding type and development drive the ingestion of microplastics by freshwater invertebrates. | microscopic plastic items (microplastics) are ubiquitously present in aquatic ecosystems. with decreasing size their availability and potential to accumulate throughout food webs increase. however, little is known on the uptake of microplastics by freshwater invertebrates. to address this, we exposed species with different feeding strategies to 1, 10 and 90 µm fluorescent polystyrene spheres (3-3 000 particles ml-1). additionally, we investigated how developmental stages and a co-exposure to nat ... | 2017 | 29208925 |
| exposure and effects of sediment-spiked fludioxonil on macroinvertebrates and zooplankton in outdoor aquatic microcosms. | information from effects of pesticides in sediments at an ecosystem level, to validate current and proposed risk assessment procedures, is scarce. a sediment-spiked outdoor freshwater microcosm experiment was conducted with fludioxonil (lipophilic, non-systemic fungicide) to study exposure dynamics and treatment-related responses of benthic and pelagic macroinvertebrates and zooplankton. besides blank control and solvent control systems the experiment had six different treatment levels (1.7-614m ... | 2018 | 28851143 |
| potential impact of selected agricultural chemical contaminants on a northern prairie wetland: a microcosm evaluation. | an aquatic, multicomponent microcosm simulating a northern prairie wetland was used to assess the potential effects of six extensively used agricultural pesticides on this important wildlife habitat. using a nested experimental design, 16 4-liter aquatic microcosms were treated with three concentrations of each of the pesticides carbofuran, fonofos, phorate, atrazine, treflan and trial-late. the microcosm units were incubated for 30 d in an environmental chamber, with a 16-h light:8-h dark cycle ... | 1986 | 28466995 |
| a new microsporidium fibrillaspora daphniae g. n. sp. n. infecting daphnia magna (crustacea: cladocera) in siberia and its taxonomic placing within a new family fibrillasporidae and new superfamily tubulinosematoidea (opisthosporidia: microsporidia). | infection with a new microsporidium, fibrillaspora daphniae g. n. sp. n., was found in a local daphnia magna population in tomsk region (western siberia, russia) at the prevalence rate of 52%. histological sections showed parasite cells entirely encompassing the host haemocoel. methanol-fixed spores were elongate, oval, 4.8 ± 0.3 μm × 2.3 ± 0.2 μm in size. all developmental stages were in direct contact with the host cell cytoplasm, with single nuclei, and division by binary fission. the sporont ... | 2018 | 29322298 |
| a millifluidic system for analysis of daphnia magna locomotory responses to water-born toxicants. | aquatic toxicity testing in environmental monitoring and chemical risk assessment is critical to assess water quality for human use as well as predict impact of pollutants on ecosystems. in recent years, studies have increasingly focused on the relevance of sub-lethal effects of environmental contaminants. sub-lethal toxicity endpoints such as behavioural responses are highly integrative and have distinct benefits for assessing water quality because they occur rapidly and thus can be used to sen ... | 2017 | 29242636 |
| adequacy of planctomycetes as supplementary food source for daphnia magna. | the nutritional quality of daphnids diet can influence their growth, reproduction and survival. in aquatic ecosystems, bacteria can contribute significantly to daphnia diet by supporting, for instances, their high needs for phosphorus. the laboratory feeding of the model organisms daphnia spp. is algal based, but should be improved to allow their better performance. the aim of this study was to evaluate the potential of two planctomycetes, gemmata obscuriglobus and rhodopirellula rubra, from exp ... | 2017 | 29222603 |
| bioconversion of alkaloids to high-value chemicals: comparative analysis of newly isolated lupanine degrading strains. | this work explores the potential for development of a lupanine valorization process evaluating different isolated microorganisms for their capacity to metabolize the alkaloid. ecotoxicological assessment demonstrated that lupanine is toxic for vibrio fischeri and daphnia magna exhibiting ec50 values of 89 mg l-1 and 47 mg l-1 respectively, while acting both as growth inhibitor for a monocotyledonous and as promoter for a dicotyledonous plant. among the eight aerobic and anaerobic strains isolate ... | 2018 | 29126065 |
| effects of the discharge of uranium mining effluents on the water quality of the reservoir: an integrative chemical and ecotoxicological assessment. | the water quality of the antas reservoir, under the influence of treated effluents from a uranium mining area ore treatment unit (utm) with acid mine drainage, was investigated. samples were collected every 3 months from the antas reservoir (cab, p41-e and p14) and from the utm (p41-s). chemical and acute 48 h toxicity tests using ceriodaphnia silvestrii and daphnia magna analyses were carried out to determine the potential environmental risks due to discharging the uranium mine effluents into t ... | 2017 | 29066833 |
| phycoremediation of landfill leachate with the chlorophyte chlamydomonas sp. sw15arl and evaluation of toxicity pre and post treatment. | landfill leachate treatment is an ongoing challenge in the wastewater management of existing sanitary landfill sites due to the complex nature of leachates and their heavy pollutant load. there is a continuous interest in treatment biotechnologies with expected added benefits for resource recovery; microalgal bioremediation is seen as promising in this regard. toxicity reduction of landfill leachate subsequent to phycoremediation was investigated in this study. the treatment eventuated from the ... | 2018 | 28926816 |
| coating carbon nanotubes with humic acid using an eco-friendly mechanochemical method: application for cu(ii) ions removal from water and aquatic ecotoxicity. | in this work, industrial grade multi-walled carbon nanotubes (mwcnt) were coated with humic acid (ha) for the first time by means of a milling process, which can be considered an eco-friendly mechanochemical method to prepare materials and composites. the ha-mwcnt hybrid material was characterized by atomic force microscopy (afm), scanning electron microscopies (sem and stem), x-ray photoelectron spectroscopy (xps), termogravimetric analysis (tga), and raman spectroscopy. stem and afm images dem ... | 2017 | 28764138 |