Impact of Cement Production on soil Heavy Metals and Nutrients Uptake of Elephant Grass (Pennisetum Purpureum) Grown within 2km Radius of cement Factory in South West Nigeria

This study was carried out to characterise Pennisetum purpureum harvested from some selected locations in S outh-W estern Nigeria using microsatellite markers. Leaf parts of growing young elephant grass (Pennisetum purpureum) were harvested and immediately preserved in ethanol solution before DNA extraction. Two (2) SSR primers (CTM59 and Xtxp278) were used to assess genetic diversity in Pennisetum purpureum. The result shows that 72% of the molecular variations in the elephant grass exists within the population with 28% among the population; there were no unique characteristics among the Nine (9) populations. Nei genetic index ranged from 0.067 (lowest) observed between Isokan and Odeda populations to 0.158 (highest), between Ifedore and Ikoyi Populations. Morphological characterization showed moderate diversity with two major clusters and one minor cluster. Keyword: Elephant grass; cultivars; locations; markers

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Utilisation of Biomass and Hybrid Biochar from Elephant Grass and Low Density Polyethylene for the Competitive Adsorption of Pb(II), Cu(II), Fe(II) and Zn(II) from Aqueous Media

Recent Innovations in Chemical Engineering (Formerly Recent Patents on Chemical Engineering) ◽

10.2174/2405520413999201117143926 ◽

2020 ◽

Vol 13 ◽

Author(s):

Joshua O. Ighalo ◽

Lois T. Arowoyele ◽

Samuel Ogunniyi ◽

Comfort A. Adeyanju ◽

Folasade M. Oladipo-Emmanuel ◽

...

Keyword(s):

Heavy Metals ◽

Removal Efficiency ◽

Contact Time ◽

Competitive Adsorption ◽

Adsorption Process ◽

Aqueous Media ◽

Polluted Water ◽

Batch Adsorption ◽

Order Kinetic ◽

Elephant Grass

Background: The presence of pollutants in polluted water is not singularized hence pollutant species are constantly in competition for active sites during the adsorption process. A key advantage of competitive adsorption studies is that it informs on the adsorbent performance in real water treatment applications. Objective: This study aims to investigate the competitive adsorption of Pb(II), Cu(II), Fe(II) and Zn(II) using elephant grass (Pennisetum purpureum) biochar and hybrid biochar from LDPE. Method: The produced biochar was characterised by Scanning Electron Microscopy (SEM) and Fourier Transform Infrared Spectroscopy (FTIR). The effect of adsorption parameters, equilibrium isotherm modelling and parametric studies were conducted based on data from the batch adsorption experiments. Results: For both adsorbents, the removal efficiency was >99% over the domain of the entire investigation for dosage and contact time suggesting that they are very efficient for removing multiple heavy metals from aqueous media. It was observed that removal efficiency was optimal at 2 g/l dosage and contact time of 20 minutes for both adsorbent types. The Elovich isotherm and the pseudo-second order kinetic models were best-fit for the competitive adsorption process. Conclusion: The study was able to successfully reveal that biomass biochar from elephant grass and hybrid biochar from LDPE can be used as effective adsorbent material for the removal of heavy metals from aqueous media. This study bears a positive implication for environmental protection and solid waste management.

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Contamination features and health risk of soil heavy metals in China

The Science of The Total Environment ◽

10.1016/j.scitotenv.2015.01.025 ◽

2015 ◽

Vol 512-513 ◽

pp. 143-153 ◽

Cited By ~ 513

Author(s):

Haiyang Chen ◽

Yanguo Teng ◽

Sijin Lu ◽

Yeyao Wang ◽

Jinsheng Wang

Keyword(s):

Heavy Metals ◽

Health Risk ◽

Soil Heavy Metals

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Energetic characterization and flash pyrolysis of different elephant grass cultivars ( Pennisetum purpureum Schum.)

The Canadian Journal of Chemical Engineering ◽

10.1002/cjce.24309 ◽

2021 ◽

Author(s):

Mayara de Oliveira Lessa ◽

Guilherme Quintela Calixto ◽

Bruna Maria Emerenciano das Chagas ◽

Emerson Moreira Aguiar ◽

Marcus Antônio de Freitas Melo ◽

...

Keyword(s):

Pennisetum Purpureum ◽

Elephant Grass ◽

Flash Pyrolysis ◽

Energetic Characterization ◽

Pennisetum Purpureum Schum

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Temporal assessment of root and shoot colonization of elephant grass (Pennisetum purpureum Schum.) host seedlings by Gluconacetobacter diazotrophicus strain LP343

Microbiological Research ◽

10.1016/j.micres.2020.126651 ◽

2021 ◽

Vol 244 ◽

pp. 126651

Author(s):

Carlos M. Dos-Santos ◽

Wiglison B.A. Nascimento ◽

Bruna P. do Nascimento ◽

Stefan Schwab ◽

José I. Baldani ◽

...

Keyword(s):

Pennisetum Purpureum ◽

Elephant Grass ◽

Gluconacetobacter Diazotrophicus ◽

Pennisetum Purpureum Schum ◽

Temporal Assessment

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Reforestation Impacted Soil Heavy Metal Fractionation and Related Risk Assessment in the Karst Area, Southwest China

Forests ◽

10.3390/f12070891 ◽

2021 ◽

Vol 12 (7) ◽

pp. 891

Author(s):

Qian Zhang ◽

Guilin Han ◽

Xingliang Xu

Keyword(s):

Heavy Metals ◽

Risk Assessment ◽

Ecological Risk ◽

Southwest China ◽

Risk Index ◽

Contamination Factor ◽

Karst Area ◽

Risk Assessment Code ◽

Bcr Sequential Extraction ◽

Soil Heavy Metals

Human agricultural activities have resulted in widespread land degradation and soil contamination in the karst areas. However, the effects of reforestation after agricultural abandonment on the mobility risks and contamination of heavy metals have been rarely reported. In the present study, six soil profiles were selected from cropland and abandoned cropland with reforestation in the Puding karst regions of Southwest China. The Community Bureau of Reference (BCR) sequential extraction method was used to evaluate the compositions of different chemical fractions of soil heavy metals, including Fe, Mn, Cr, Zn, Ni, and Cd. The total contents of Cr, Ni, Zn, Cd, and Mn in the croplands were significantly higher than those in the abandoned croplands. For all soils, Cr, Ni, Zn, and Fe were mainly concentrated in the residual fractions (>85%), whereas Mn and Cd were mostly observed in the non-residual fractions (>65%). The non-residual fractions of Cd, Cr, Ni, and Zn in the croplands were higher than those in the abandoned croplands. These results indicated that the content and mobility of soil heavy metals decreased after reforestation. The individual contamination factor (ICF) and risk assessment code (RAC) showed that Cd contributed to considerable contamination of karst soils. The global contamination factor (GCF) and potential ecological risk index (RI) suggested low contamination and ecological risk of the investigated heavy metals in the croplands, moreover they can be further reduced after reforestation.

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