Impact of Burning E-waste on Soil Physicochemical Properties and Soil Microorganisms

Sanusi, Adeyemi Isaac

doi:10.9734/bmrj/2015/16874

Cited by 11 publications

(6 citation statements)

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“…In this study, a total of 22 isolates comprising of 17 bacteria and 5 fungi were isolated. The isolates of Bacillus sp, Pseudomonas sp, Staphylococcus sp, Aspergillus sp, and Micrococcus sp from the e-waste soil samples in this work were similar to the work of Sanusi [23] who also reported the presence of these microorganisms in soils from Alaba ewaste dump sites in Lagos State, Nigeria. However, similar microbial isolates as identified in this study had also been reported to be associated with wastes and waste biodegration in soil samples [24].…”

Section: Discussionsupporting

confidence: 86%

Bioaccumulation of Heavy Metals using Selected Organisms Isolated from Electronic Waste Dumpsite of two South-Western States in Nigeria

et al. 2017

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Heavy metals from electronic wastes can accumulate to alarming concentrations in soils, causing significant detrimental impacts on human life and the environment. Bioaccumulation of heavy metals by bacteria and fungi has been a major focus of most bioremediation studies owing to the excellent metal-binding properties. The current study was conducted to isolate the most promising Zn, Cu and Pb tolerant microorganisms from contaminated soils, and to assess their metal accumulating abilities. Bacillus licheniformis, B. polymyxa, Pseudomonas aeruginosa, Micrococcus roseus, Aspergillus niger and A. flavus were selected for the bioaccumulation study, based on their known tolerance to heavy metals. Bacillus licheniformis was most efficient in the removal of Cu (71.3 %) and Pb (70.1 %). Pb accumulation for Aspergillus flavus was 65.76 %. Zn accumulation for Pseudomonas aeruginosa and Aspergillus niger were 74.1 % and 78.3 %, respectively. This study concluded that all these microorganisms have potential for bioremediating soil environments contaminated with heavy metals.

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Section: Discussionsupporting

confidence: 86%

Bioaccumulation of Heavy Metals using Selected Organisms Isolated from Electronic Waste Dumpsite of two South-Western States in Nigeria

et al. 2017

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“…The levels of organic matter and total organic carbon (2.1±0.29-6.9±0.87 and 6.3±0.35-14.2±0.35 mg/kg respectively) in the soils of the electronic workshops were high when compared to the control (Table 2). The O.M values was found to be lower when compared with the value (17.06%) reported by Sanusi, [28], in E-waste site in Lagos and elevated when compared with Adesokan et al, [29] in soil pollution by E-waste.…”

Section: Determination Of Physico-chemical Properties Of the Soils Sa...contrasting

confidence: 64%

Evaluation of the Physico-Chemical Composition of Soil at Electronics Repair Workshops in Benin, Nigeria.

Ngbejume¹,

Anegbe²,

Okafor³

2022

JCSN

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Soil samples were collected using grid method from several electronic repair workshops in Benin City, a control (TS) which was from a site with no electronic repair activity and a DTS thirty meters away from the workshops at a depth of 0-15cm. The physiochemical properties were carried out using standard methods. Heavy metals were determined using the Atomic Absorption Spectrophotometer (AAS), while the sequential extraction was carried out using the European community Bureau of Reference (BCR) method. The results of the physiochemical properties are as follows; 5.9 to 6.5 for pH, 150±0.71 to 342±1.34 µs/cm for EC, 2.1±0.29 to 6.9±0.87 for O.M, 6.3±0.35 to 14.2±0.35 mg/kg for TOC, 157.6±0.44 to 217.9±0.45 mg/kg for CEC, 08.3±0.50 to 13.3±1.93 mg/kg for SO42-, 08.5±1.30 to 16.1±2.00 mg/kg for NO3-, and 7.7±1.41 - 14.7±2.10 mg/kg for PO43-. The concentration for Fe, Pb, Cd, Ni, Zn and Cu are respectively; 321.3 to 514.3 mg/kg, 1.78 to 6.17 mg/kg, 0.59 to 1.05 mg/kg, 6.4 to 23.12 mg/kg, 35.81 to 41.38 mg/kg and 28.88 to 44.35 mg/kg. From the results, the metals concentrations were higher in soils from the electronic repair work shops (TS) compared to those soil samples that were 30m away from the workshops (DTS). The results of the fractionation revealed that Fe, Zn, Cd and Ni were mainly in residual and Fe-Mn oxide fraction while Cu and Pb were in residual and organic bound fraction. The enrichment factors of metals in all the sites range from no enrichment to very severe enrichment. Mobility factor in all the sites were low ranging from 3.13-16.48, indicating generally low availability as well as mobility. Environmental risk factors showed that these metals pose potential threat to the environment. Contamination factor of all metals except Cd, in all the sites, exceeded unity indicating that the soils are clearly contaminated with these metals. Continuous monitoring is essential as these sites are potential sources of these metals.

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“…E-waste generally contains valued metals such as copper, platinum group as well as potential environmental contaminants such as lead, mercury, nickel, selenium, cadmium, polybrominated diphenyl ethers (PBDEs) and polychlorinated biphenyls (PCBs). Most e-waste is disposed in landfills (Sanusi, 2015). The e-waste burning site is close to the Lagos water body; washing of surface materials from land surface to the sea or leaching of chemicals substances into it can be experienced.…”

Section: Collection Of Samplesmentioning

confidence: 99%

Microbiota of catfish (Clarias gariepinus) tissues harvested from vials polluted with soil from e-wastes dumpsite

Adegunloye¹,

Sanusi²

2019

Int. J. Fish. Aquac.

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In this study the microbiota of Clarias gariepinus tissues harvested from e-waste-soil polluted vials were assessed. Soil samples contaminated with e-waste were analyzed using standard analytical protocol while the microbial study was obtained using standard conventional microbiological techniques. The results revealed that the soil was sandy-loamy and blackish in colour. High organic matter (17.60%) and organic carbon (10.17%) were obtained. Also, higher calcium (182.00 mg/kg) and phosphorus (146.65 mg/kg) contents compared to other mineral constituents were recorded while, the heavy metals ranged from 0.32-64.90 mg/kg. Bacterial count ranged from 9.0 × 102 to 4.0 × 103 cfu/L while the fungal count from 4.0 × 102 to 2.3 ×103 sfu/L. The genera of bacteria isolate were identified as Staphylococcus, Proteus, Bacillus, Listeria, Salmonella, Enterobacter, Pseudomonas, Lactobacillus and Corynebacterium and fungal isolates were Penicilliun, Candida, Articulospora, Aspergillus, Rhizopus, Mucor, Zoopage, Varcosporium and Rhodotorula. Microbial species richness of fish tissues from polluted vials indicates a more poly-diverse microbial community compared to those from unpolluted vial. Differences were observed in the occurrence of fungi on the surfaces of catfish tissues in control vial compare to those on fishes from polluted vials. Hence, there is a need for proper water management for fish culturing and caution in the exploration of fishes from polluted natural waters for human consumption.

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Impact of Burning E-waste on Soil Physicochemical Properties and Soil Microorganisms

Cited by 11 publications

References 0 publications

Bioaccumulation of Heavy Metals using Selected Organisms Isolated from Electronic Waste Dumpsite of two South-Western States in Nigeria

Bioaccumulation of Heavy Metals using Selected Organisms Isolated from Electronic Waste Dumpsite of two South-Western States in Nigeria

Evaluation of the Physico-Chemical Composition of Soil at Electronics Repair Workshops in Benin, Nigeria.

Microbiota of catfish (Clarias gariepinus) tissues harvested from vials polluted with soil from e-wastes dumpsite

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