scholarly journals PHYTOREMEDIATION OF SYNTHETIC WASTEWATER CONTAINING COPPER BY USING NATIVE PLANT

2020 ◽  
Vol 51 (6) ◽  
pp. 1160-1612
Author(s):  
Zeki & M-Ridha
Keyword(s):  
Heavy Metals ◽  
Removal Efficiency ◽  
Translocation Factor ◽  
Water Concentration ◽  
Bioaccumulation Factor ◽  
Synthetic Wastewater ◽  
Native Plant ◽  
Range Finding ◽  
Permissible Limits ◽  
River Conservation

This study was aimed to assess the efficiency of N.oleander to remove heavy metals such as Copper (Cu) from wastewater. A toxicity test was conducted outdoor for 65-day to estimate the ability of N.oleander to tolerate Cu in synthetic wastewater. Based on a previous range-finding test, five concentrations were used in this test (0, 50, 100, 300, 510 mg/l). The results showed that maximum values of removal efficiency was found 99.9% on day-49 for the treatment 50 mg/l. Minimum removal efficiency was 94% day-65 for the treatment of 510 mg/l. Water concentration was within the permissible limits of river conservation and were 0.164 at day-35 for the 50 mg/l treatment, decreased thereafter until the end of the observation, and 0.12 at day-65 for the treatment 100 mg/l. the concentrations of water samples exceeded the permissible limits for 300 and 510 mg/l throughout the observation. Bioaccumulation factor (BAF) for N.oleaner was found to be greater than one for all the treatments. Higher translocation factor (TF) were 1.65, 1.73, 2.61 and 2.34 mg/l for 50, 100, 300 and 510 mg/l, respectively. This study revealed that N.oleander can tolerate and treat Cu concentration in wastewater.

scholarly journals PHYTOREMEDIATON OF HEAVY METALS FROM WASTEWATER BY CONSTRUCTED WETLAND MICROCOSM PLANTED WITH ALOCASIA PUBER

2019 ◽  
Vol 81 (5) ◽  
Author(s):  
Najaa Syuhada Mohamad Thani ◽  
Rozidaini Mohd Ghazi ◽  
Mohd Faiz Mohd Amin ◽  
Zulhazman Hamzah
Keyword(s):  
Heavy Metals ◽  
Constructed Wetland ◽  
Translocation Factor ◽  
Treatment Method ◽  
Synthetic Wastewater ◽  
Contaminated Sites ◽  
Toxic Heavy Metals ◽  
Alternative Technologies ◽  
Metals Removal ◽  
Global Environmental

Water pollution by toxic heavy metals is a global environmental problem. It has led to the development of alternative technologies for heavy metals removal from contaminated sites. Constructed wetland microcosm by using Alocasia puber is a possible treatment method for wastewater containing heavy metals. Synthetic wastewater with heavy metals Cd, Cr, Cu, Ni, and Zn were used in this study. Several heavy metals concentrations (5 mg/L, 10 mg/L and 100 mg/L) were used in the systems. Six different hydraulic retention times (HRTs) (2, 4, 6, 8, 10 and 12 days) were tested in the present study. The results obtained showed removal efficiencies of heavy metals of >99% after day 12. The removal of Ni from 10 mg/L solutions (initial concentrations) recorded the best removal efficiency. Heavy metal translocation factor (TF) was found to be less than 1 for all metals tested, which confirmed the significance of roots as heavy metals accumulator compared to stems or leaves of A, puber. Therefore, this study concluded that A, puber has a great potential as an important component in constructed wetlands for water contaminated with heavy metals.

scholarly journals Experimental study and parameters optimization of microalgae based heavy metals removal process using a hybrid response surface methodology-crow search algorithm

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
N. Sultana ◽  
S. M. Zakir Hossain ◽  
M. Ezzudin Mohammed ◽  
M. F. Irfan ◽  
B. Haq ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Response Surface Methodology ◽  
Response Surface ◽  
Removal Efficiency ◽  
Search Algorithm ◽  
Synthetic Wastewater ◽  
Order Kinetic ◽  
Optimum Conditions ◽  
Microalgal Biomass ◽  
Multiple Heavy Metals

Abstract This study investigates the use of microalgae as a biosorbent to eliminate heavy metals ions from wastewater. The Chlorella kessleri microalgae species was employed to biosorb heavy metals from synthetic wastewater specimens. FTIR, and SEM/XRD analyses were utilized to characterize the microalgal biomass (the adsorbent). The experiments were conducted with several process parameters, including initial solution pH, temperature, and microalgae biomass dose. In order to secure the best experimental conditions, the optimum parameters were estimated using an integrated response surface methodology (RSM), desirability function (DF), and crow search algorithm (CSA) modeling approach. A maximum lead(II) removal efficiency of 99.54% was identified by the RSM–DF platform with the following optimal set of parameters: pH of 6.34, temperature of 27.71 °C, and biomass dosage of 1.5 g L−1. The hybrid RSM–CSA approach provided a globally optimal solution that was similar to the results obtained by the RSM–DF approach. The consistency of the model-predicted optimum conditions was confirmed by conducting experiments under those conditions. It was found that the experimental removal efficiency (97.1%) under optimum conditions was very close (less than a 5% error) to the model-predicted value. The lead(II) biosorption process was better demonstrated by the pseudo-second order kinetic model. Finally, simultaneous removal of metals from wastewater samples containing a mixture of multiple heavy metals was investigated. The removal efficiency of each heavy metal was found to be in the following order: Pb(II) > Co(II) > Cu(II) > Cd(II) > Cr(II).

scholarly journals Phytoremediation Perspectives of Seven Aquatic Macrophytes for Removal of Heavy Metals from Polluted Drains in the Nile Delta of Egypt

Biology ◽  
2021 ◽  
Vol 10 (6) ◽  
pp. 560
Author(s):  
Mohamed Abdelaal ◽  
Ibrahim A. Mashaly ◽  
Dina S. Srour ◽  
Mohammed A. Dakhil ◽  
Mohamed Azab El-Liethy ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Eichhornia Crassipes ◽  
Aquatic Macrophytes ◽  
Nile Delta ◽  
Translocation Factor ◽  
Bioaccumulation Factor ◽  
Heavy Metals Accumulation ◽  
Removal Of Heavy Metals ◽  
Safe Limits ◽  
Nile Delta Of Egypt

The current study addressed the heavy metals accumulation potentials of seven perennial aquatic macrophytes (Cyperus alopecuroides, Echinochloa stagnina, Eichhornia crassipes, Ludwigia stolonifera, Phragmites australis, Ranunculus sceleratus and Typha domingensis) and the pollution status of three drains (Amar, El-Westany and Omar-Beck) in the Nile Delta of Egypt. Nine sites at each drain were sampled for sediment and plant analyses. Concentrations of eight metals (Fe, Cu, Zn, Mn, Co, Cd, Ni, and Pb) were determined in the sediment and the aboveground and belowground tissues of the selected macrophytes. Bioaccumulation factor (BF) and translocation factor (TF) were computed for each species. The sediment heavy metals concentrations of the three drains occurred in the following order: El-Westany > Amar > Omar-Beck. The concentrations of sediment heavy metals in the three drains were ordered as follows: Fe (438.45–615.17 mg kg−1) > Mn (341.22–481.09 mg kg−1) > Zn (245.08–383.19 mg kg−1) > Cu (205.41–289.56 mg kg−1) > Pb (31.49–97.73 mg kg−1) > Cd (13.97–55.99 mg kg−1) > Ni (14.36–39.34 mg kg−1) > Co (1.25–3.51 mg kg−1). The sediment exceeded the worldwide permissible ranges of Cu, Zn and Pb, but ranged within safe limits for Mn, Cd, Ni and Co. P. australis accumulated the highest concentrations of Fe, Co, Cd and Ni, while E. crassipes contained the highest concentrations of Cu, Zn, Mn, and Pb. Except for C. alopecuroides and Cu metal, the studied species had BF values greater than one for the investigated heavy metals. Nevertheless, the TFs of all species (except Cd in L. stolonifera) were less than one. Hence, the studied species are appropriate for accumulation, biomonitoring, and phytostabilization of the investigated metals.

scholarly journals Biotransportation of Heavy Metals in Eichhornia crassipes (MART.) Solms. Using X-Ray Fluorescence Spectroscopy

2015 ◽  
Vol 10 (1) ◽  
pp. 09-21
Author(s):  
Hiren Soni ◽  
Sheju Thomas
Keyword(s):  
Heavy Metals ◽  
Eichhornia Crassipes ◽  
Aquatic Macrophyte ◽  
Translocation Factor ◽  
Active Species ◽  
Freshwater Ecosystems ◽  
Bioaccumulation Factor ◽  
Toxic Heavy Metals ◽  
X Ray ◽  
Freshwater Macrophyte

Biomonitoring study of heavy metals was done at pilgrimage freshwater ecosystems of Central Gujarat, India, to ascertain the degree of 17 metals. The study focused on the assessment of available metals in Eichhornia crassipes (Mart.) Solms., collected from sacred palustrine habitat (Dakor Sacred Wetland – DSW) of Gujarat, to be used as a biomonitor (active) species, in comparison with sediment (abiotic monitor) for metal pollution. The results were obtained by analyzing elemental composition of rhizome, tuber, stem and leaves of native aquatic freshwater macrophyte (Eichhornia crassipes) along with bottom sediments for 17 heavy metals (Ti, Cr, Mn, Fe, Ni, Cu, Zn, Br, Rb, Sr, Y, Zr, Nb, Ba, Pb, Sm, Ir) using Wavelength Dispersive X-Ray Fluorescence (WD-XRF) (Omania Software). The highest concentrations were observed in rhizome (12) in assay species of aquatic macrophyte, followed by tuber and stem (10 each), and least content was observed in leaf (8). Toxic heavy metals (Ti, Mn, Fe, Zn, Br, Sr, Zr, Pb) were detected, prone to cardiac, respiratory, musculo-skeletal and hepatic interferences in indigenous human clusters in and around studied wetland. Eichhornia crassipes was proved to be the best phytoaccumaltor species for heavy metals, exhibited by highest translocation factor for Zn, Sr, Zr, and Pb, and bioaccumulation factor for Mn, Rb, Sr and Fe metals. Present research indicates that E. crassipes (Mart.) Solms. is better remediator species for mobility of Pb, Zr and Sr metals. Thus, Eichhornia crassipes can be used for an effective abatement of contaminated aquatic sites.

scholarly journals The Evaluation of Copper and Zinc Absorption in Fruit Body of Lactarius Piperatus Species Growing in Different Forestry Ecosystems of Dambovita County

2011 ◽  
Vol 68 (2) ◽  
Author(s):  
Gabriela BUSUIOC ◽  
Carmen Cristina ELEKES ◽  
Claudia STIHI
Keyword(s):  
Heavy Metals ◽  
Fruiting Body ◽  
Fruit Body ◽  
Translocation Factor ◽  
Bioaccumulation Factor ◽  
Zinc Absorption ◽  
Copper And Zinc ◽  
And Storage ◽  
Absorption Features ◽  
Made In

Our researches were made in the view to put in evidence the capacity of autochthonous macromycetes species for accumulation and storage heavy metals. This paper is about absorption features of Lactarius piperatus, one macromycetes species very common in the forestry ecosystems of Romania. Biological samples were harvested from three forestry ecosystems of Dambovita County: Bolboca, Mogoi and Cobia, placed at different altitude (360m, 430m and respectively 280m). It were determinate the concentration of copper and zinc in fruiting body (separated for cap and stipe) and soil by EDXRF method with ELVA-X spectrometer with fluorescence. The bioaccumulation (Bf) and translocation (Tf) factors were calculated for each case by mathematics equation. Also it was determinate the pH of macromycetes substrates. The results represent the average of five determinations at least, and were exprimate in ppm. So, concentration of copper in cap was between minimum of 7,08ppm at the exemplars harvested from Mogoi forest and maximum of 24,11ppm at those growing in Cobia forest. Bioaccumulation factor for copper calculated for cap was between 4% and 11%, being a very low one. But translocation factor had positive values (1,3 – 2).

scholarly journals Removal of heavy metals using kaolinite and Bentonite filter media

2018 ◽  
Vol 8 (6) ◽  
Author(s):  
Ghada Heikal
Keyword(s):  
Heavy Metals ◽  
Removal Efficiency ◽  
Retention Time ◽  
Bentonite Clay ◽  
Industrial Wastes ◽  
Synthetic Wastewater ◽  
Analysis Model ◽  
Filter Media ◽  
Mining Operations ◽  
Initial Concentration

Heavy metals are among the most lethal pollutants of surface water. The main sources of heavy metals are industrial wastes from processes such as mining operations and ore processing, smelter, textile, leather dyeing, coating, metal finishing, chemical manufacturing, refineries, power generation and nuclear fuel processing. The concentration of heavy metals should be reduced to the acceptable levels before discharged into the environment because these are non degradable into nontoxic metals end products and the well known damaging effects of heavy metals on human being and other habitants. Sets of experiments were carried out to examine the ability of (kaolinite and bentonite) to reduce the concentration of chromium and cadmium ions in raw synthetic wastewater using upflow filter respectively. The main parameters were solution pH 2-6, retention time 12-72 hrs, the initial concentration of pollutants 100–500 ppm and filter media height 10.5-42 cm. All data were analyzed by regression analysis model to correlate the different boundary conditions. The highest achieved % removal efficiency of Cr and Cd were 96% and 91% through kaolinite and bentonite clay filter media at pH 6.0 and 5.0 respectively, retention time 24 hr, initial concentration 100 ppm and filter media height 42 cm. The results of regression models indicate that the most influential independent variables in the % removal efficiency of Cr and Cd ions from aqueous solutions using kaolinite and bentonite clay upflow filter pH, retention time and height media filter, which affects positively. Results of the experimental data show that the best empirical correlation achieved the highest fitting of predicted % removal of Cr and Cd using kaolinite and bentonite clay separately that gives the highest value of (R2 = 0.995 and 0.988)respectively.

scholarly journals Removal of Cu2+ and Zn2+ from aqueous medium using ionic polyacrylamides

2017 ◽  
Vol 19 (2) ◽  
pp. 211-216
Keyword(s):  
Heavy Metals ◽  
Aqueous Medium ◽  
Removal Efficiency ◽  
Environmental Problem ◽  
Metal Removal ◽  
Polymer Concentration ◽  
Synthetic Wastewater ◽  
Zinc Metal ◽  
High Concentrations ◽  
Ionic Load

<p>The wastewater produced by the galvanoplasty industry is a serious environmental problem due to the high concentrations of heavy metals. In this study polymers were used in ionic flocculation to treat synthetic wastewater containing metals, applying four types of polyacrylamides with different ionic loads as agents to remove copper and zinc. Metal removal efficiency was assessed considering the influence of polymer concentration, ionic load and pH. Selectivity (Cu<sup>2+</sup>/Zn<sup>2+</sup>) at different polymer concentrations was also evaluated. The results confirm that polyacrylamide is efficient in treating wastewater containing heavy metals. These experiments exhibited removal efficiency of around 40% and pH= 4,5; however, efficiency was more than 80% with pH= 7.0 under the same conditions, when polyacrylamides with average ionicity were used.</p>

scholarly journals Screening of Native Plants Growing on a Pb/Zn Mining Area in Eastern Morocco: Perspectives for Phytoremediation

Plants ◽  
2020 ◽  
Vol 9 (11) ◽  
pp. 1458 ◽  
Author(s):  
Said El Hasnaoui ◽  
Mouna Fahr ◽  
Catherine Keller ◽  
Clément Levard ◽  
Bernard Angeletti ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Plant Species ◽  
Native Plants ◽  
Organic Matter Content ◽  
Translocation Factor ◽  
Matter Content ◽  
Native Plant ◽  
Stipa Tenacissima ◽  
Accumulation Coefficient ◽  
Eastern Morocco

Screening of native plant species from mining sites can lead to identify suitable plants for phytoremediation approaches. In this study, we assayed heavy metals tolerance and accumulation in native and dominant plants growing on abandoned Pb/Zn mining site in eastern Morocco. Soil samples and native plants were collected and analyzed for As, Cd, Cu, Ni, Sb, Pb, and Zn concentrations. Bioconcentration factor (BCF), translocation factor (TF), and biological accumulation coefficient (BAC) were determined for each element. Our results showed that soils present low organic matter content combined with high levels of heavy metals especially Pb and Zn due to past extraction activities. Native and dominant plants sampled in these areas were classified into 14 species and eight families. Principal components analysis separated Artemisia herba-alba with high concentrations of As, Cd, Cu, Ni, and Pb in shoots from other species. Four plant species, namely, Reseda alba, Cistus libanotis, Stipa tenacissima, and Artemisia herba-alba showed strong capacity to tolerate and hyperaccumulate heavy metals, especially Pb, in their tissues. According to BCF, TF, and BAC, these plant species could be used as effective plants for Pb phytoextraction. Stipa tenacissima and Artemisia herba-alba are better suited for phytostabilization of Cd/Cu and Cu/Zn, respectively. Our study shows that several spontaneous and native plants growing on Pb/Zn contaminated sites have a good potential for developing heavy metals phytoremediation strategies.

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

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.

scholarly journals Risk Assessment of Heavy Metals in Basmati Rice: Implications for Public Health

2021 ◽  
Vol 13 (15) ◽  
pp. 8513
Author(s):  
Farah Tariq ◽  
Xiukang Wang ◽  
Muhammad Hamzah Saleem ◽  
Zafar Iqbal Khan ◽  
Kafeel Ahmad ◽  
...  
Keyword(s):  
Enrichment Factor ◽  
Risk Index ◽  
Translocation Factor ◽  
Bioaccumulation Factor ◽  
Basmati Rice ◽  
Nutritional Properties ◽  
Health Risk Index ◽  
Zn Content ◽  
Locally Grown ◽  
Different Parts

Basmati rice is increasingly recognized and consumed in different parts of the world due to its different tastes and nutritional properties. This research focused on determining the cadmium (Cd), cobalt (Co), Copper (Cu), iron (Fe), manganese (Mn), nickel (Ni) and zinc (Zn) content in locally grown basmati rice in Pakistan and assessing the risks of these values to human health. Root, shoot and grain samples of basmati rice were taken, along with soil samples from the five regions studied. Metal mean concentrations (mg/kg) in grains fluctuated from 2.70 to 9.80 for Cd, 4.80 to 9.85 for Zn, 1.16 to 1.46 for Cu, 1.84 to 10.86 for Co, 2.05 to 13.07 for Fe, 5.03 to 11.11 for Mn and 3.24 to 13.28 for Ni, respectively. All metal values were within permissible limits except for Cd. The enrichment factor for Cd was highest among all sites. Cobalt and zinc had the highest bioaccumulation factor and translocation factor. The highest enrichment factor was noticed for Cd and the lowest for Cu. The health risk index at all examined sites was less than one. Consistent examination is recommended to limit health hazards instigated by the use of rice polluted with a greater concentration of Cd.

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