Solidification of sand by Pb(II)-tolerant bacteria for capping mine waste to control metallic dust: Case of the abandoned Kabwe Mine, Zambia

Mwandira, Wilson; Nakashima, Kazunori; Kawasaki, Satoru; Ito, Mayumi; Satō, Tsutomu; Igarashi, Toshifumi; Chirwa, Meki; Banda, Kawawa; Nyambe, Imasiku; Nakayama, Shouta M.M.; Nakata, Hokuto; Ishizuka, Mayumi

doi:10.1016/j.chemosphere.2019.04.107

Cited by 32 publications

(8 citation statements)

References 36 publications

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“…The local population, soil, water, and food are contaminated with Pb (II) and Zn (II) in the study area at Kabwe Mine, Zambia, Africa, leading Kabwe to be labeled as one of the 10 most polluted places on Earth in 2013 16 . Therefore, this study aims to assess the heavy metal removal by Oceanobacillus profundus KBZ 3-2, a strain isolated by our research group at the Kabwe Mine site, Zambia, Africa 17 . This bacterium was isolated when we investigated the biocementation of mine waste by immobilization using ureolytic bacteria by microbially induced calcium carbonate precipitation.…”

Section: Biosorption Of Pb (Ii) and Zn (Ii) From Aqueous Solution By mentioning

confidence: 99%

“…Moreover, the mechanism of biosorption was discussed and especially focused on the dominant factor affecting biosorption. profundus KBZ 3-2 used in this study was isolated from the mine waste when screening for ureolytic bacteria for the solidification of sand 17 . The same methodology described in our previous study was used to screen the bacterium 17 .…”

Section: Biosorption Of Pb (Ii) and Zn (Ii) From Aqueous Solution By mentioning

confidence: 99%

“…profundus KBZ 3-2 used in this study was isolated from the mine waste when screening for ureolytic bacteria for the solidification of sand 17 . The same methodology described in our previous study was used to screen the bacterium 17 . Chemical reagents used in this study were obtained from Wako Pure Chemical Industries Ltd., Tokyo, Japan, otherwise mentioned.…”

Section: Biosorption Of Pb (Ii) and Zn (Ii) From Aqueous Solution By mentioning

confidence: 99%

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Biosorption of Pb (II) and Zn (II) from aqueous solution by Oceanobacillus profundus isolated from an abandoned mine

Mwandira

Nakashima

Kawasaki

et al. 2020

Sci Rep

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The present study investigated biosorption of Pb (II) and Zn (II) using a heavy metal tolerant bacterium Oceanobacillus profundus KBZ 3-2 isolated from a contaminated site. The effects of process parameters such as effect on bacterial growth, pH and initial lead ion concentration were studied. The results showed that the maximum removal percentage for Pb (II) was 97% at an initial concentration of 50 mg/L whereas maximum removal percentage for Zn (II) was at 54% at an initial concentration of 2 mg/L obtained at pH 6 and 30 °C. The isolated bacteria were found to sequester both Pb (II) and Zn (II) in the extracellular polymeric substance (EPS). The EPS facilitates ion exchange and metal chelation-complexation by virtue of the existence of ionizable functional groups such as carboxyl, sulfate, and phosphate present in the protein and polysaccharides. Therefore, the use of indigenous bacteria in the remediation of contaminated water is an eco-friendly way of solving anthropogenic contamination.

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Section: Biosorption Of Pb (Ii) and Zn (Ii) From Aqueous Solution By mentioning

confidence: 99%

Section: Biosorption Of Pb (Ii) and Zn (Ii) From Aqueous Solution By mentioning

confidence: 99%

Section: Biosorption Of Pb (Ii) and Zn (Ii) From Aqueous Solution By mentioning

confidence: 99%

See 1 more Smart Citation

Biosorption of Pb (II) and Zn (II) from aqueous solution by Oceanobacillus profundus isolated from an abandoned mine

Mwandira

Nakashima

Kawasaki

et al. 2020

Sci Rep

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View full text Add to dashboard Cite

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“…and Oceanobacillus profundus, whereas ureolytic bacteria precipitate aragonite nanograins outside their cell walls and, later, the cell content is replaced by aragonite. The aragonite crystals that formed outside and inside the cell wall are different in shape and size [44,52]. In the case of mineralized varieties, superficial crusts preserve, as well as complicate, the morphology of the organisms, whereas biomineralized fabrics within skeletal, molluscan, and some thrombolites probably retain clearer details.…”

Section: Discussionmentioning

confidence: 99%

Sediment Characteristics of Beachrock: A Baseline Investigation Based on Microbial Induced Carbonate Precipitation at Krakal-Sadranan Beach, Yogyakarta, Indonesia

et al. 2020

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Isolation of ureolytic bacteria and geochemical analysis of beachrock from Krakal-Sadranan Beach (Yogyakarta, Indonesia) were conducted to determine natural sedimentary characteristics of the beachrock. The beachrock was also examined to determine the depositional conditions and distribution of rare earth elements. An increased concentration of total rare earth elements, both heavy rare earth elements (terbium, dysprosium, yttrium, holmium, erbium, thulium, ytterbium, and lutetium) and light rare earth elements (lanthanum, cesium, praseodymium, neodymium, samarium, europium, and gadolinium) signals that the beachrock deposition process happened under oxidative environmental conditions. This study proposes the novel use of ureolytic bacteria in a depositional environment for carbonate control of a sedimentary process for the development of artificial rock to mitigate coastal erosion. The resulting bacterial strains are highly homologous to the 16S rDNA nucleotide sequence of the species Oceanobacillus profundus, Vibrio maritimus, and Pseudoalteromonas tetradonis.

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“…Thus, dust generation and transportation of potentially toxic elements (PTEs) from KMWs to the surrounding environment is high. Although many researchers have proposed immobilization techniques to reduce contamination in the town [6][7][8], pollution of the surrounding soils with PTEs is inevitable because of the dust dispersion from KMWs [9]. Generally, PTEs are bioaccessible through inhalation, intentional/accidental ingestion of contaminated soil, or dust [10,11].…”

Section: Introductionmentioning

confidence: 99%

Solid-Phase Partitioning and Leaching Behavior of Pb and Zn from Playground Soils in Kabwe, Zambia

Mufalo

Tangviroon

Igarashi

et al. 2021

Toxics

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Zambia's Kabwe mine wastes (KMWs) are responsible for contaminating the surrounding soil and dust in the Kabwe district. Unfortunately, these wastes arise from the historical mining activities of lead (Pb) and Zinc (Zn), which lacked adequate waste management strategies. As a result, potentially toxic elements (PTEs) (Pb and Zn) spread across the Kabwe district. To assess the soil pollution derived from previous mining activities, we studied topsoil samples (n = 8) from the school playground soils (SPs). In this study, the degree of contamination, geochemical partitioning, and leachability, coupled with the release and retention of Pb and Zn, were studied. The SPs were classified as extremely enriched (EF > 40) and contaminated with Pb (Igeo > 5). On average, Pb (up to 89%) and Zn (up to 69%) were bound with exchangeable, weak acid-soluble, reducible and oxidizable phases, which are considered as 'geochemically mobile' phases in the environment. The leachates from the soils (n = 5) exceeded the Zambian standard (ZS: 190:2010) for Pb in potable drinking water (Pb < 0.01 mg/L). Furthermore, the spatial distribution of Pb and Zn showed a significant reduction in contents of Pb and Zn with the distance from the mine area.

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Solidification of sand by Pb(II)-tolerant bacteria for capping mine waste to control metallic dust: Case of the abandoned Kabwe Mine, Zambia

Cited by 32 publications

References 36 publications

Biosorption of Pb (II) and Zn (II) from aqueous solution by Oceanobacillus profundus isolated from an abandoned mine

Biosorption of Pb (II) and Zn (II) from aqueous solution by Oceanobacillus profundus isolated from an abandoned mine

Sediment Characteristics of Beachrock: A Baseline Investigation Based on Microbial Induced Carbonate Precipitation at Krakal-Sadranan Beach, Yogyakarta, Indonesia

Solid-Phase Partitioning and Leaching Behavior of Pb and Zn from Playground Soils in Kabwe, Zambia

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