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Chủ đề : Environmental advances


Có 40+ tài liệu thuộc chủ đề "Environmental advances"

Integrated water resources management: An indicator framework for water management system assessment in the R’Dom Sub-basin, Morocco

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Integrated water resources management: An indicator framework for water management system assessment in the R’Dom Sub-basin, Morocco. This paper reports the elaboration and application of an Integrated Water Resources Management (IWRM) indi- cators framework designed to assess Water management system in the Meknes Region. The methodology consisted of an in- dicator selection process to evaluate the inputs from water management...

Microplastic pollution of Patos Lagoon, south of Brazil

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Enfrin et al., 2019. whereas other recent publication ( Borrelle et al., 2020 ) estimates that the amount in 2016 was equivalent to 19 to 23 Mt, which can reach up to 53 Mt per year by 2030. Renzi et al. According to the National Oceanic and Atmospheric Administration ( Masura et al., 2015. its classification is due to its...

Assessment of metals pollution in sediments and tailings of Klein Aub and Oamites mine sites, Namibia

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Assessment of metals pollution in sediments and tailings of Klein Aub and Oamites mine sites, Namibia. a Centre for Environmental Management, University of the Free State, Bloemfontein, South Africa. The objective of this study was to determine the concentrations of investigated metals (Cr, Cu, Mn, Ni, Pb, Sr, V, Zn, Zr, Rb, Ba, Ca, Fe, K, S and Ti) and...

A review on biosorptive removal of dyes and heavy metals from wastewater using watermelon rind as biosorbent

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Marin-Rangel et al., 2012 . Mishra et al., 2012. Gupta et al., 2010 . Badescu et al., 2018. Singh et al., 2018. Baytar et al., 2018 . Johnson et al., 2012 . Ding et al. Jaafar et al. Kausar et al. Hussein et al. Park et al. Escudero et al., 2019. Uner et al. Like Uner et al. Han et...

Monitoring cyanobacterial harmful algal blooms at high spatiotemporal resolution by fusing Landsat and MODIS imagery

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Toxic Cyanobacteria-rich Harmful Algal Blooms (CyanoHABs) are severe water environmental problems for global inland water bodies concomitant to the growing discharge of domestic or industrial wastew- ater as well as agriculture and fertilizer runoff ( Glibert et al., 2005. Furthermore, surface foams or scums formed by CyanoHABs and their odorous com- pounds foul up water quality and surrounding recreational environ-...

Application of magnetic nanoparticles for water purification

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Water is one of the main sources of human pathogenic microorganisms in developing countries. For the nanoparticles with higher removal efficiencies in the first tests (FeO and CuFeO), 50 mg mL − 1 was the optimal concentration of particles and 1 min of contact time it was enough to obtain high removal efficiencies. The removal efficiency of S. Due to...

Stubble burning: Effects on health & environment, regulations and management practices

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Stubble burning is one of the major contributors to atmospheric pol- lution in the world releasing particulate and gaseous pollutants that have severe effects on human health and the environment ( Sharma et al., 2010. It is a significant source of air pollution in many parts of the world being only the 3 rd after industrial and vehicular emissions (...

Spatial distribution, pollution index, receptor modelling and health risk assessment of metals in road dust from Lagos metropolis, Southwestern Nigeria

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Dust is the most prevalent geologic material affecting human health and well-being ( Yongming et al., 2006. Studies have established contaminations of road dust and roadside soil with inorganic (metals) and organic (polycyclic aromatic hydrocarbons) pollutants that could pose harmful threats to the state of human well-being ( Qian et al., 2011 . Liu et al., 2014 . Taiwo et...

Magnetically recoverable nanoparticles for the simultaneous removal of Sb and As from water

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This study examines the development of a nanocomposite consisting of iron oxy-hydroxides (FeOOH) embedded on magnetite (Fe 3 O 4 ) nanocarriers, towards its application for the simultaneous uptake of As(V) and Sb(V) ionic forms at concentrations below drinking water regulation and its magnetically-assisted recovery at the end of the process. is the optimum to establish a sufficient efficiency in...

Fe3O4 loaded chitin – A promising nano adsorbent for Reactive Blue 13 dye

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MCH NM show band gap energy of 2.257 eV, evaluated by Tauc’s plot using UV–visible spectroscopy. MCH NM show excellent swelling property due to the tendency of the polymer chains to reach elongated configurations at equilibrium beyond which an elastic retractive force prevents further expansion. Batch adsorption studies on MCH NM show excellent adsorption activity of 199.02 mg/g in 22...

Phthalates in Avicennia schaueriana, a mangrove species, in the State Biological Reserve, Guaratiba, RJ, Brazil

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Phthalates in Avicennia schaueriana , a mangrove species, in the State Biological Reserve, Guaratiba, RJ, Brazil. The absorption and accumulation of phthalates in the mangrove species Avicennia schaueriana (Acanthaceae) were monitored over one year. in the Guaratiba Biological Reserve in the state of Rio de Janeiro, Brazil, in three different regions of the Guaratiba mangrove forest: A (fringe), C (basin),...

Carbon mass balance model to investigate biochar and activated carbon amendment effects on the biodegradation of stable-isotope labeled toluene in gravelly sand

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Differences in the half-saturation constant suggests that sorbent amendment affects the microbial ecology, by making microorganisms which can utilize substrates at lower concentrations more competitive. Toluene is a monoaromatic volatile petroleum hydrocarbon com- pound frequently released into the environment due to its presence in fuel and petroleum products, and for its role as a solvent in the manu- facture of...

Pollution and health risks assessment of nitrate and phosphate concentrations in water bodies in South Eastern, Nigeria

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Pollution and health risks assessment of nitrate and phosphate concentrations in water bodies in South Eastern, Nigeria. In this study, nitrate and phosphate concentrations in water- bodies such as Abadaba river, Agulu lake, Njaba river, Oguta Lake, and Nike Lake located in Southeast, Nigeria was determined in both dry and wet season by spectrophotometric technique and modeled for pollution and...

Zeolite synthesis from low-cost materials and environmental applications: A review

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Auerbach et al., 2004. Lakiss et al., 2020. Oruji et al., 2018 . Metropoulos et al., 1993. Georgiev et al., 2009. Hoque et al. Lonin et al., 2015. He et al., 2016. Metintas et al., 2010. Abdullahi et al., 2017. Cui et al. Shoppert et al., 2017. Wittayakun et al., 2008. Wu et al., 2009. Sapawe et al., 2013. Lin...

DeNOx removal techniques for automotive applications – A review

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Several factors can be attributed to the high demand of fos- sil products ( Ijaodola et al., 2019. The high reliance on fossil products comes with some consequences ( Khatib et al., 2019 . Ogungbemi et al., 2019 . Wilberforce et al., 2019d . Olabi et al., 2020d. Ijaodola et al., 2018 . Baroutaji et al., 2019. Abdelkareem et al.,...

Plant diversity and local rainfall regime mediate soil ecosystem functions in tropical forests of north-east Bangladesh

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Plant diversity and local rainfall regime mediate soil ecosystem functions in tropical forests of north-east Bangladesh. We investigated the importance of local rainfall regime and indicators of plant (tree, herb, and shrub) diversity (richness and abundance) on soil ecosystem functions in two tropical forest ecosystems of north-east Bangladesh. soil water regulation (SWR), soil physical stability (SPS), soil microbial habitat (SMH),...

Turbidimetric study for the decontamination of paint effluent (PE) using mucuna seed coagulant (MSC): Statistical design and coag-flocculation modelling

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Turbidimetric study for the decontamination of paint effluent (PE) using mucuna seed coagulant (MSC): Statistical design and coag-flocculation modelling. Paint effluent Mucuna seed Coag-flocculation. Recently, advances on the usage of natural coagulants in the coag-flocculation process have attracted increasing interest. Previous research has shown that natural coagulant could enhance the coag-flocculation performance. Response surface methodology (RSM) via center composite design...

Facile fabrication of nano zerovalent iron – Reduced graphene oxide composites for nitrate reduction in water

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Both rGO-nZVI-P and rGO-nZVI-B composites were characterised by electron microscopic, molecular spectroscopic and electrochemical methods. When compared with rGO-nZVI-B, the rGO-nZVI-P reduces 70% of 0.8064 mM nitrate within an hour. The nitrate reduction by the rGO-nZVI composites follows pseudo-second-order kinetics. The rGO-nZVI-P also has the potential to destruct excess nitrate in water remediation.. Shi et al., 2011. Wang et al.,...

Individual and combined effects of ethylenediurea (EDU) and elevated carbon dioxide (ECO2), on two rice (Oryza sativa L.) cultivars under ambient ozone

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Elevated CO 2. EDU treated PB-1 cultivar under elevated CO 2 showed less discernible ozone (O 3 ) injury, better photosynthetic rate, photosynthetic pigments, and aggregated more plant biomass in comparison to the Sarjoo-52 cultivar. EDU treated PB-1 cultivar under elevated CO 2 , had more economic yield as compared to the Sarjoo-52 cultivar. Essential human dietary nutrients such as...

Heavy metal enrichment and potential ecological risks from different solid mine wastes at a mine site in Ghana

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Fifteen plots (each measuring 20 m × 100 m) were randomly demarcated on each of the study sites. Results showed high enrichment of the solid mine wastes with the studied heavy metals compared to the local background values, with non-essential metals (As, Cd, Pb) displaying higher accumulation potential than the essential metals (Fe, Cu). The heavy metal enrichment of the...