Remediation of Heavy Metals: Tools and Techniques

Singh, Ankita; Tripathi, Amit Kumar

doi:10.1002/9783527839063.ch4

“…Ex situ techniques are more expensive compared to in situ techniques because of the additional cost attributable to excavation. However, the cost of installing equipment on site and the inability to visualize and monitor the subsurface of contaminated sites are major concerns when conducting in situ bioremediation (Singh & Tripathi, 2023;Azubuike, Chikere & Okpokwasili, 2016). On the other hand, two technologies can also be applied to improve bioremediation: biostimulation (addition of nutrients) and bioaugmentation (addition of microorganisms), which are used when successful treatment is required and after previously performing a physical, chemical and microbiological characterization of the site to be bioremediated.…”

Section: Introductionmentioning

confidence: 99%

Engineering and Applied Sciences

MARTÍNEZ-VARGAS,

FIGUEROA-RAMÍREZ,

PATIÑO-CARACHURE

et al. 2023

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The Faculty of Engineering and Technology of the Universidad Autónoma del Carmen (UNACAR), through the Educational Program of the Master's Degree in Materials and Energy Engineering, organized the 5th Master's Student Colloquium, held from August 28 to 31, 2023. The purpose of this event was to provide a space for the dissemination of research topics of the students of the different master's and doctoral programs offered by UNACAR and other graduate programs in the region. It is important to highlight that students from the Universidad Autónoma de Campeche, the Universidad Autónoma del Estado de Morelos, the Benemérita Universidad Autónoma de Puebla, the Universidad Autónoma Metropolitana and the Centro de Investigación Científica de Yucatán - Unidad de Energía Renovable participated in the event.

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“…Ex situ techniques are more expensive compared to in situ techniques because of the additional cost attributable to excavation. However, the cost of installing equipment on site and the inability to visualize and monitor the subsurface of contaminated sites are major concerns when conducting in situ bioremediation (Singh & Tripathi, 2023;Azubuike, Chikere & Okpokwasili, 2016). On the other hand, two technologies can also be applied to improve bioremediation: biostimulation (addition of nutrients) and bioaugmentation (addition of microorganisms), which are used when successful treatment is required and after previously performing a physical, chemical and microbiological characterization of the site to be bioremediated.…”

Section: Introductionmentioning

confidence: 99%

Phytoremediation of heavy metals in petroleum-contaminated soil using red mangrove (Rhizophora mangle) and a microbial consortium

RAMÍREZ-ELÍAS,

BENÍTEZ-PINEDA,

AGUILAR-UCÁN

et al. 2023

Engineering and Applied Sciences

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In the present work, was studied the capacity of red mangrove (Rhizophora mangle) seedlings to phytoremediator heavy metals in soils contaminated with crude oil by applying bioaugmentation through a microbial consortium made up of Serratia marcescens, Trichoderma harzianum and Rhizopus sp. Experimental treatments were prepared in triplicate with soils contaminated with 30, 60 and 100 mg/Kg of crude oil and cohorts or surveys of experimental units were carried out 0, 15, 30, 60 and 90 days, respectively. The growth of the Rhizophora mangle seedlings was evaluated, obtaining an average height of 9.69 cm and a root length average of 10.67 cm. To determine the concentration of heavy metals, the EPA 3050B digestion method was used, and for its quantification, a Thermo-Scientific atomic absorption spectrophotometer, model ICE 3000, was used. With the results obtained, the heavy metal phytoremediation percentages were calculated. Finality, the percentages of average phytoremediation of heavy metals by applying Rhizophora mangle and the microbial consortium, presented the following order: Cd (86%) > Pb (65%) > Cu (57%) > Zn (43%) > (40%).

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