scholarly journals Biosorption potential of lead tolerant fungi isolated from refuse dumpsite soil in Nigeria

2020 ◽  
Vol 42 ◽  
pp. e46753
Author(s):  
Jeremiah David Bala ◽  
Faruk Kuta ◽  
Adabara Nasiru ◽  
Abdulameen Saheed Adedeji ◽  
Adel Ali Saeed Al-Gheethi ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Aspergillus Niger ◽  
Penicillium Chrysogenum ◽  
Lead Removal ◽  
High Tolerance ◽  
Polluted Environment ◽  
Plate Method ◽  
Fungal Isolates ◽  
Significant Difference

Metals are non-biodegradable and recurrent in the environs. Heavy metals tolerant fungi were isolated from refuse dumpsite soil using pour plate method. These fungi were identified as Aspergillus niger, Penicillium chrysogenum and Rhizomucor sp. The fungal isolates were screened for cadmium (Cd), lead (Pb) and zinc (Zn) with concentration of 200ppm, 400ppm and 600ppm. Aspergillus niger and Penicillium chrysogenum showed high tolerance for the metals in contrast to the control. The fungi with high tolerance were used for biosorption study. However, Penicillium chrysogenum showed higher lead removal or biosorption potential of 1.07ppm, 3.35ppm and 4.19ppm as compared with Aspergillus niger with lead removal of 0.67ppm, 3.11ppm and 3.79ppm at 5th, 10th and 15th day respectively. One-way Analysis of Variance was used to interpret the data generated from the biosorption study which revealed that there was no significant different (p > 0.05) between the lead removal of Aspergillus niger and Penicillium chrysogenum on the 5th day but there was significant difference (p < 0.05) in the lead removal of Aspergillus niger and Penicillium chrysogenum on the 10th and 15th day. This study suggests the use of these fungal isolates for removal and biotreatment of heavy metal contaminated and polluted environment

scholarly journals Heavy Metals Tolerance Potential of Fungi Species Isolated from Gold Mine Tailings in Ghana

2021 ◽  
Author(s):  
Emmanuel Sey ◽  
Ebenezer J. D. Belford
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Rhizopus Oryzae ◽  
Metal Tolerance ◽  
Trichoderma Viride ◽  
Heavy Metal Tolerance ◽  
Tolerance Index ◽  
High Tolerance ◽  
Significant Difference ◽  
Mycelia Growth

Introduction: Heavy metal contamination has necessitated a less expensive and non-destructive clean-up technique such as mycoremediation. This study aimed to isolate, identify, and evaluate the tolerance of fungi species in different concentrations of heavy metals for their potential use in bioremediation. Materials and Methods: Fungi were isolated by serial dilution and spread plate techniques from gold tailings and their tolerance to different concentrations of As, Cd, Cr, Cu, Pb, Zn (as potential bioremediation candidates) was evaluated. Fungal radial growths were recorded daily over a 14 days’ incubation period to establish their tolerance levels using the Tolerance Index. Results: Five isolated fungi species belonged to the genera Aspergillus, Trichophyton, Rhizopus, Trametes, and Trichoderma. Except for Trichophyton rubrum, the other fungi species were tolerant to all Cr concentrations (0 – 100ppm), but no significant difference was observed in mycelia growth compared to their controls. With high tolerance index ranging from 0.91 to 1.02, Trichoderma viride and Rhizopus oryzae were tolerant to all Cu concentrations (0 – 125ppm). High tolerance was exhibited by Trametes versicolor to Cd at 25 and 50 ppm, and by Rhizopus oryzae at 25 ppm, but no significant difference was found in mycelia growth. Rhizopus oryzae tolerated all As and Pb concentrations with high tolerance index ranging from 0.81 to 1.00. It also tolerated   Zn at 200-600ppm concentration with a tolerance index from 0.80 to 0.91. Conclusion: The selective nature of these fungi species for specific heavy metal tolerance indicates their potential for selective use as effective bioremediative clean up agent of heavy metals contaminated sites.

scholarly journals Heavy metal levels in cattle egrets (Bubulcus ibis) foraging in some abattoirs in Lagos State metropolis

2021 ◽  
Vol 45 (1) ◽  
Author(s):  
Elijah Abakpa Adegbe ◽  
Oluwaseyi Oluwabukola Babajide ◽  
Lois Riyo Maina ◽  
Shola Elijah Adeniji
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Metal Accumulation ◽  
Heavy Metal Contamination ◽  
Heavy Metal Accumulation ◽  
Bubulcus Ibis ◽  
Significant Difference ◽  
Metal Levels ◽  
Lagos State ◽  
The Mean

Abstract Background Heavy metal accumulation in the ecosystem constitutes a potential toxic effect which is hazardous to human health. Increasing environmental pollution has necessitated the use of cattle egrets to evaluate the levels of heavy metal contamination, to establish their use in biomonitoring of heavy metals and to provide data for monitoring pollution in the environment. Results The present study assessed the utilization of Bubulcus ibis in monitoring pollution in five abattoirs, namely Agege, Bariga, Kara, Itire and Idi-Araba, all situated in Lagos State. The concentration of five (5) heavy metals, cadmium (Cd), copper (Cu), nickel (Ni), lead (Pb) and zinc (Zn) was determined in the liver, muscle and feather of Bubulcus ibis using the atomic absorption spectrophotometer. The trend of metal accumulation was in the order: Zn > Cu > Pb > Cd > Ni for all the sampled tissues. The mean tissue concentrations of the metals were significantly different (p < 0.05) among the sites. The highest levels of metal concentration were reported in the liver in all the locations. Mean concentration of Cd in Kara (0.003 ± 0.00058) was significantly (p < 0.05) higher than those found at Agege (0.0013 ± 0.00058) and Idi-Araba (0.001 ± 0.001). A significant difference (p < 0.05) was also observed between the mean concentrations of Cu in Bariga (0.01 ± 0.001) and Idi-Araba (0.003 ± 0.001). Conclusion All the studied heavy metals were present in the liver, muscle and feathers of the cattle egrets. The contamination levels were ascertained from the study which indicated that cattle egrets are useful in biomonitoring studies and the generated data will serve as baseline data which could be compared with data from other locations for monitoring heavy metal pollution.

scholarly journals Fungal Population and Physicochemical Characteristics of Abattoir-Impacted Soil in Iwofe, Rivers State

2021 ◽  
pp. 36-44
Author(s):  
Williams, Janet Olufunmilayo ◽  
Owhorji, Gloria
Keyword(s):  
Heavy Metals ◽  
Aspergillus Niger ◽  
Physicochemical Characteristics ◽  
Control Soil ◽  
Fungal Population ◽  
Candida Sp ◽  
Fungal Isolates ◽  
Fungal Load ◽  
Microbiological Techniques ◽  
Rivers State

Aim: To determine the fungal population and physicochemistry of abattoir impacted soil in Iwofe, Rivers State. Study Design: This study focused on Abattoir impacted soil. Statistical analysis of data and interpretation was carried out. Place and Duration of Study: Abattoir impacted soil was collected from three points in an abattoir located in Iwofe, Rivers State while the unpolluted soil which served as control was collected from the Rivers State University, Port Harcourt in January, 2021. Methodology: Standard microbiological techniques were used: the fungal population was determined by inoculating aliquots of an appropriate dilution resulting from a ten-fold serial dilution on prepared Sabouraud dextrose agar plates in duplicates. Plates were later incubated for 3-5 days after which colonies were enumerated and used in obtaining the fungal population in the soil samples while distinct colonies were subcultured for macroscopic and microscopic identification of fungi. The physicochemical parameters and heavy metals were analyzed using standard methods. Results: Fungal load in the control and abattoir impacted soil were 1.09×105 and 3.9×104 CFU/g, respectively. The fungal load of the control soil was significantly higher (P˂0.05) than the abattoir impacted soil. The fungal isolates identified in the abattoir impacted soil were Microsporium sp, Aspergillus niger and Candida sp while Aspergillus niger, Aspergillus flavus, Fusarium sp, Penicillium sp, Mucor sp and Rhizopus sp were identified from the control soil. The pH, temperature, nitrate and phosphate of the abattoir soil were 6.7, 28.33℃, 27.83(mgKg-1) and 1055(mgKg-1), respectively. The concentrations of Cadmium, Iron and Lead in the abattoir Impacted soil and control soil were 0.81, 563.35 and 7.12 mgKg-1, 0.51, 582.0 and 3.18 mgKg-1, respectively. The physico chemistry and heavy metals in the abattoir soil were within acceptable limits. Discussion and Conclusion: The findings from this study showed that heavy metals in abattoir impacted soil had an impact in the fungal population which led to the isolation of only three fungal isolates belonging to Microsporium sp, Candida sp and Aspergillus niger. More so, despite the presence of heavy metals in the abattoir impacted soil, the metals were all within permissible limits. Thus, the abattoir impacted soil was not heavily polluted.

scholarly journals Bioremoval of Different Heavy Metals by the Resistant Fungal StrainAspergillus niger

2018 ◽  
Vol 2018 ◽  
pp. 1-7 ◽  
Author(s):  
Ismael Acosta-Rodríguez ◽  
Juan F. Cárdenas-González ◽  
Adriana S. Rodríguez Pérez ◽  
Juana Tovar Oviedo ◽  
Víctor M. Martínez-Juárez
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Aspergillus Niger ◽  
Fungal Biomass ◽  
Dry Weight ◽  
Removal Capacity ◽  
Removal Of Heavy Metals ◽  
The Ideal

The objective of this work was to study the resistance and removal capacity of heavy metals by the fungusAspergillus niger. We analyzed the resistance to some heavy metals by dry weight and plate: the fungus grew in 2000 ppm of zinc, lead, and mercury, 1200 and 1000 ppm of arsenic (III) and (VI), 800 ppm of fluor and cobalt, and least in cadmium (400 ppm). With respect to their potential of removal of heavy metals, this removal was achieved for zinc (100%), mercury (83.2%), fluor (83%), cobalt (71.4%), fairly silver (48%), and copper (37%). The ideal conditions for the removal of 100 mg/L of the heavy metals were 28°C, pH between 4.0 and 5.5, 100 ppm of heavy metal, and 1 g of fungal biomass.

scholarly journals Mercury, Arsenic and Lead Removal by Air Gap Membrane Distillation: Experimental Study

Water ◽  
2020 ◽  
Vol 12 (6) ◽  
pp. 1574 ◽  
Author(s):  
Abdullah Alkhudhiri ◽  
Mohammed Hakami ◽  
Myrto-Panagiota Zacharof ◽  
Hosam Abu Homod ◽  
Ahmed Alsadun
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Removal Efficiency ◽  
Membrane Distillation ◽  
Air Gap ◽  
Lead Removal ◽  
Membrane Pore ◽  
Pore Sizes ◽  
Air Gap Membrane Distillation ◽  
Wide Range

Synthetic industrial wastewater samples containing mercury (Hg), arsenic (As), and lead (Pb) ions in various concentrations were prepared and treated by air gap membrane distillation (AGMD), a promising method for heavy metals removal. Three different membrane pore sizes (0.2, 0.45, and 1 μm) which are commercially available (TF200, TF450, and TF1000) were tested to assess their effectiveness in combination with various heavy metal concentrations and operating parameters (flow rate 1–5 L/min, feed temperature 40–70 °C, and pH 2–11). The results indicated that a high removal efficiency of the heavy metals was achieved by AGMD. TF200 and TF450 showed excellent membrane removal efficiency, which was above 96% for heavy metal ions in a wide range of concentrations. In addition, there was no significant influence of the pH value on the metal removal efficiency. Energy consumption was monitored at different membrane pore sizes and was found to be almost independent of membrane pore size and metal type.

scholarly journals Assessment of Heavy Metals in Water Contaminated with Petroleum Products in Keffi Local Government Area, Nasarawa State, Nigeria.

2020 ◽  
Vol 3 (3a) ◽  
pp. 38-45
Author(s):  
JK Makpo ◽  
SM Ameh ◽  
A Asarya ◽  
YP Gambo
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Local Government ◽  
Water Samples ◽  
Petroleum Products ◽  
Local Government Area ◽  
World Health ◽  
P Value ◽  
Contaminated Water ◽  
Significant Difference

This work assessed the presence of heavy metals in water contaminated with petroleum products in Keffi Local Government Area. Two water sampling station were selected based on the stratified method of sampling of Antau River. Station A is located along Federal Government College Keffi popularly known as Antau Bridge where Agricultural and mechanical activities, with sales of petroleum product take place. Station B was located at Dadin Kowa known as Gada Manu where human activities such as bathing and washing takes place which served as control. The distance between stations is 1km. The procedural plan of this study was monthly sampling of water from both Stations. Materials such as funnel, sampling container, distilled water, conical flask, filter paper, 50ml polypropylene centrifuge tube, cooler were used. Heavy metal concentration was determined using X – ray Fluorescent Spectroscopy (XRF) at the Center for Energy Research and Training (CERT), Ahmadu Bello University Zaria. The water parameters of the four samples were determined using the Extech instrument. The result on Physico – chemical parameters revealed the values obtained from contaminated water samples to be pH (7.31), Dissolved Oxygen (1.14), Electrical Conductivity (8.22), Total Dissolved Solid (4.13), Temperature (27.45) and Salinity (0.091) while the controlled Station at point B were pH (7.43), DO (7.35), EC (3.14), TDS (1.54), Temperature (26.75), Salinity (0.o94) respectively. From the result obtained, the heavy metal contaminated samples had the following values: Mg (29.31±), Al (218.69±), Si (230.12±), S (1153.65±), Cl (54.25±), Ca (106.56±), Ti (23.66±), Cr (3.15±), Fe (15.92±), Cd (7.54±). For the control sample at point B, the following values were obtained: Mg (27.49±), Al (223.71±), Si (243.21±), S (94.84±), Cl (23.52±), Ca (28.44±), Ti (32.99±), Fe (16.63±), Cd (7.67±) respectively. The P-value was 0.8105 (p>0.05) for the water quality parameters while for the concentration of heavy metal P-value was 0.2054 (p>0.05). This implies that there was no significant difference between the concentrations of elements. However, the concentration values of heavy metals in the contaminated water at Station A and control water samples at Station B were higher than the World Health Organization values (Standard) for drinking water

scholarly journals The Study of Concentrations of Some Heavy Metals in Relation to Size of Macrobrachium vollenhovenii (Herklots, 1857) in Asejire Lake, Oyo State, Southwest Nigeria

2017 ◽  
Vol 4 (1) ◽  
Author(s):  
Abayomi Jimoh ◽  
Abiodun Ojesanmi ◽  
Rasaq Olowu
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Animal Tissue ◽  
Human Consumption ◽  
Heavy Metal Concentrations ◽  
Water And Sediment ◽  
Significant Difference ◽  
Southwest Nigeria ◽  
Mean Concentration ◽  
Cu And Zn

Introduction: Heavy metals are useful for essential animal tissue metabolism; however, when these metals exist beyond the permissible limits, they cause ecological damage and constitute threat to human health. Freshwater prawns, including Macrobrachium vollenhovenii, are bio-indicators of metal pollution. M. vollenhovenii is an important source of protein and abundant in the Asejire Lake, which serves as a major source of drinking water to people living around the Lake. Aims: This study was therefore designed to examine the concentrations of some heavy metals (Mn, Pb, Cd, Cu and Zn) in water, sediment and different sizes of Macrobrachium vollenhovenii in Asejire Lake, southwest Nigeria. Materials and Methods: Quarterly sampling of M. vollenhovenii, water and sediment was conducted on Asejire Lake in the months of November, February and May. Analysis of the selected heavy metals in the various samples was done using Atomic Absorption Spectrophotometer. Bioaccumulation Factors (BAF) of the metals were also determined. Results: Heavy metals concentration in prawns was in this order: Zn > Cu > Mn > Pb > Cd. Ranked mean concentration of heavy metals in different prawn sizes was large > small > medium. There was no significant difference, at p > 0.05, among heavy metals concentrations in different prawn sizes, except in Cadmium. Pb, Cu and Zn were detected in water, while all the five metals were detected in sediment. Large prawns bioaccumulated the most heavy metals while medium prawns bioaccumulated the least. Cu was the most bioaccumulated heavy metal. Concentrations of Mn, Pb, Cu and Cd were above the FAO limit for prawn; concentrations of Cu and Zn in water were below the WHO limit, while Pb was above the limit. Concentrations of heavy metals in sediment were lower than the FAO limit. Conclusion: These results suggest that prawns and water from Asejire Lake are not safe for human consumption, and it is recommended that proper managerial policy be put in place to check the influx of these metals into the Lake. Keywords: Heavy Metals, Size, Macrobrachium vollenhovenii, Asejire Lake

scholarly journals Determination and Assessment of the Toxic Heavy Metal Elements Abstracted from the Traditional Plant Cosmetics and Medical Remedies: Case Study of Libya

2019 ◽  
Vol 16 (11) ◽  
pp. 1957 ◽  
Author(s):  
Aiman M. Bobaker ◽  
Intisar Alakili ◽  
Sukiman B. Sarmani ◽  
Nadhir Al-Ansari ◽  
Zaher Mundher Yaseen
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Inductively Coupled Plasma ◽  
Tree Bark ◽  
Toxic Heavy Metal ◽  
Potential Health ◽  
Inductively Coupled ◽  
Walnut Tree ◽  
Significant Difference ◽  
Plasma Mass Spectrometry

Henna and walnut tree bark are widely used by Libyan women as cosmetics. They may contain lead (Pb), cadmium (Cd) and arsenic (As), which, in turn, pose a high risk to their health. This study aims to determine the levels of Pb, Cd and As in henna and walnut tree bark products sold in Libyan markets. The products were analyzed for their Pb, Cd and As content by using inductively coupled plasma mass spectrometry (ICP-MS) after a microwave acid digestion. The results showed a significant difference between the henna and walnut tree bark samples in terms of their heavy metals content (p < 0.05). The highest heavy metal concentrations were observed in the walnut tree bark samples whereas the lowest was observed in the henna samples. In addition, 60% of the henna and 90% of the walnut tree bark samples contained Pb levels and approximately 80% of the henna and 90% the walnut tree bark samples contained Cd levels, which are much higher than the tolerance limit. However, As concentrations in all the samples were lower. The results indicated that such cosmetics expose consumers to high levels of Pb and Cd and hence, to potential health risks. Thus, studying the sources and effects of heavy metals in such cosmetics is strongly recommended.

scholarly journals ANALYSIS OF HEAVY METAL CONTENT IN Anandara granosa (Linnaeus, 1758): A CASE STUDY OF 10 MARKETS IN SEMARANG, CENTRAL JAVA, INDONESIA

2016 ◽  
Vol 78 (4-2) ◽  
Author(s):  
Nanik Heru Suprapti ◽  
Aziz Nur Bambang ◽  
Fronthea Swastawati ◽  
Ahmad Ni’matullah Al Baari ◽  
Adriyan Pramono
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Heavy Metal Contamination ◽  
Tea Leaves ◽  
Citrus Aurantifolia ◽  
Central Java ◽  
Micronutrient Status ◽  
Significant Difference ◽  
Blood Cockle ◽  
Anadara Granosa

The purpose of this study was to evaluate Pb, Cr, and Cd levels inside the Anadara granosa and to investigate the effect of submersion using Citrus aurantifolia (lime) and Orthosiphon aristatus (kidney tea leaves) solution on Pb, Cr, and Cd levels contained in the blood cockles taken from 10 markets in the city of Semarang, Central Java, Indonesia (Johar, Genuk, Gayamsari, Jati, Peterongan, Karangayu, Mangkang, Pedurungan, Boom Lama, and Ngaliyan). The concentration of heavy metals of Anadara granosa was analyzed using Atomic Absorption Spectrometer (AAS). Analysis of variance (ANOVA) showed that heavy metals (Pb, Cd, and Cr) of blood cockle taken from 10 markets provided no significant difference (P < 0.05) on the content of Pb, Cd and Cr. Purification was carried out using Citrus aurantifolia (lime) and Orthosiphon aristatus (kidney tea leaves) solution. The lowest Pb (0.00 mg kg–1) was obtained from Boom Lama and Peterongan market with purification using kidney tea leaves solution, while the lowest Cr [(0.30 ± 0.00) mg kg–1]) was obtained from Genuk market with lime solution. In addition, the lowest Cd (0.00 mg kg–1) was obtained from Boom Lama market with purification using kidney tea leaves solution. Accumulation of heavy metal contamination in blood cockle could affect the micronutrient status and consumer health.

scholarly journals Association between Pb, Cd, and Hg Exposure and Liver Injury among Korean Adults

2021 ◽  
Vol 18 (13) ◽  
pp. 6783
Author(s):  
Do-won Kim ◽  
Jeongwon Ock ◽  
Kyong-Whan Moon ◽  
Choong-Hee Park
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Liver Injury ◽  
Liver Function ◽  
Large Population ◽  
Metal Exposure ◽  
Gamma Glutamyl Transferase ◽  
Heavy Metal Exposure ◽  
Significant Difference ◽  
Glutamyl Transferase

Background: Exposure to lead (Pb), cadmium (Cd), and mercury (Hg) has been reported to be associated with liver-related diseases. However, studies examining the association between heavy metal exposure and liver injury in a large population are scant and characterized by inconsistent results. This study aimed to evaluate the association between levels of heavy metal exposure and liver injury in the general population. Methods: Data for 2953 participants aged 19 years or more obtained from the Korean National Environmental Health Survey (KoNEHS) Cycle 3 (2015–2017) were used. The associations between levels of blood or urine heavy metals (Pb, Cd, and Hg) and liver function biomarkers [aspartate aminotransferase (AST), alanine aminotransferase (ALT), and gamma-glutamyl transferase (GGT)] were evaluated using multiple linear regression analysis. Results: Regarding the blood Pb (BPb), AST was higher in those of the 4th quartile, ALT was higher in those of the 2nd and 4th quartiles, and GGT was higher in those of the 3rd and 4th quartiles than in the 1st quartile. For urinary Cd (UCd), AST was higher in those of the 4th quartile; ALT was higher in those of the 2nd, 3rd, and 4th quartiles; and GGT was higher in the 4th quartile than in the 1st quartile. For the blood Hg (BHg), AST was higher in those of the 2nd and 4th quartile, ALT was higher in those of the 2nd, 3rd, and 4th quartiles; and GGT was higher in those of the 3rd and 4th quartiles than in the 1st quartile. There was no significant difference between urinary Hg (UHg) and liver function markers. Conclusion: Heavy metal exposure showed an association with liver injury among the general adult population in Korea. Further studies are required to clarify the relationship between heavy metals and liver injury.

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