Practical limitations of bioaugmentation in treating heavy metal contaminated soil and role of plant growth promoting bacteria in phytoremediation as a promising alternative approach

Kurniawan, Setyo Budi; Ramli, Nur Nadhirah; Said, Nor Sakinah Mohd; Alias, Jamsari; Imron, Muhammad Fauzul; Abdullah, Siti Rozaimah Sheikh; Othman, Ahmad Razi; Purwanti, Ipung Fitri; Hasan, Hassimi Abu

doi:10.1016/j.heliyon.2022.e08995

Cited by 53 publications

(14 citation statements)

References 133 publications

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“…In a study on the use of sunflower and canola crops for the phytoremediation of heavy-metal-contaminated soils, it was found that not only did the plants reduce heavy metal concentrations in the soil, but they also produced high yields of oil for use in biofuel production [ 55 ]. This suggests that phytoremediation could be valuable for environmental remediation and sustainable energy production [ 56 ]. Table 1 shows the potential plant species which can be used for heavy metal remediation.…”

Section: Heavy Metal Removal From Contaminated Soil By Phytoremediationmentioning

confidence: 99%

“…Several aids or techniques can enhance phytoremediation, depending on the specific contaminants and environmental conditions. Some of these aids include: Bioaugmentation: This involves adding beneficial microorganisms to the soil, which can help to break down contaminants and improve plant growth [ 56 ]. Phytoextraction: Utilizing plants that can accumulate large concentrations of pollutants in their tissues allows for secure collection and disposal.…”

Section: Potential Biotechnological Approaches For Phytoremediationmentioning

confidence: 99%

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Clean-Up of Heavy Metals from Contaminated Soil by Phytoremediation: A Multidisciplinary and Eco-Friendly Approach

Priya

Muruganandam

Ali

et al. 2023

Toxics

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Pollution from heavy metals is one of the significant environmental concerns facing the world today. Human activities, such as mining, farming, and manufacturing plant operations, can allow them access to the environment. Heavy metals polluting soil can harm crops, change the food chain, and endanger human health. Thus, the overarching goal for humans and the environment should be the avoidance of soil contamination by heavy metals. Heavy metals persistently present in the soil can be absorbed by plant tissues, enter the biosphere, and accumulate in the trophic levels of the food chain. The removal of heavy metals from contaminated soil can be accomplished using various physical, synthetic, and natural remediation techniques (both in situ and ex situ). The most controllable (affordable and eco-friendly) method among these is phytoremediation. The removal of heavy metal defilements can be accomplished using phytoremediation techniques, including phytoextraction, phytovolatilization, phytostabilization, and phytofiltration. The bioavailability of heavy metals in soil and the biomass of plants are the two main factors affecting how effectively phytoremediation works. The focus in phytoremediation and phytomining is on new metal hyperaccumulators with high efficiency. Subsequently, this study comprehensively examines different frameworks and biotechnological techniques available for eliminating heavy metals according to environmental guidelines, underscoring the difficulties and limitations of phytoremediation and its potential application in the clean-up of other harmful pollutants. Additionally, we share in-depth experience of safe removing the plants used in phytoremediation—a factor frequently overlooked when choosing plants to remove heavy metals in contaminated conditions.

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Section: Heavy Metal Removal From Contaminated Soil By Phytoremediationmentioning

confidence: 99%

Section: Potential Biotechnological Approaches For Phytoremediationmentioning

confidence: 99%

Clean-Up of Heavy Metals from Contaminated Soil by Phytoremediation: A Multidisciplinary and Eco-Friendly Approach

Priya

Muruganandam

Ali

et al. 2023

Toxics

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show abstract

“…Were More Beneficial to Plant Growth PGPB strains are widely distributed in the plant rhizosphere and endosphere, playing important roles in plant growth conditions in contaminated soil [19,20]. For example, inoculation of Burkholderia contaminans ZCC significantly promoted soybean growth by 23.96%, 78.18% in shoots and 20.14%, 28.81% in roots under 0.5 µM and 2.5 µM Cd 2+ treatment, respectively [21].…”

Section: Pgpb Combined Inoculantsmentioning

confidence: 99%

Combined Plant Growth-Promoting Bacteria Inoculants Were More Beneficial than Single Agents for Plant Growth and Cd Phytoextraction of Brassica juncea L. during Field Application

Wang

Wen

et al. 2022

Toxics

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Single or combined plant growth-promoting bacteria (PGPB) strains were widely applied as microbial agents in cadmium (Cd) phytoextraction since they could promote plant growth and facilitate Cd uptake. However, the distinct functional effects between single and combined inoculants have not yet been elucidated. In this study, a field experiment was conducted with single, double and triple inoculants to clarify their divergent impacts on plant growth, Cd uptake and accumulation at different growth stages of Brassica juncea L. by three different PGPB strains (Cupriavidus SaCR1, Burkholdria SaMR10 and Sphingomonas SaMR12). The results show that SaCR1 + SaMR10 + SaMR12 combined inoculants were more effective for growth promotion at the bud stage, flowering stage, and mature stage. Single/combined PGPB agents of SaMR12 and SaMR10 were more efficient for Cd uptake promotion. In addition, SaMR10 + SaMR12 combined the inoculants greatly facilitated Cd uptake and accumulation in shoots, and enhanced the straw Cd extraction rates by 156%. Therefore, it is concluded that the application of PGPB inoculants elevated Cd phytoextraction efficiency, and the combined inoculants were more conductive than single inoculants. These results enriched the existing understanding of PGPB agents and provided technical support for the further exploration of PGPB interacting mechanisms strains on plant growth and Cd phytoextraction, which helped establish an efficient plant–microbe combined phytoremediation system and augment the phytoextraction efficiency in Cd-contaminated farmlands.

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“…Both living and non-living biosorbents may be generated from appropriate biomass and employed for efficient heavy metal removal and recovery from wastewater, with bacteria being the most often used microorganism in biosorption technology (Chellaiah 2018; Okoro et al 2022). Bacteria can serve as a supplementary agent in the process of phytoremediation for the treatment of heavy metal-contaminated media in wastewater treatment (Ismail et al 2020; Kurniawan et al 2022c). The presence of bacteria in the rhizosphere of plants has been seen to contribute to the enhancement of plant development and its ability to withstand the exposure to pollutants, particularly the epiphytic rhizobacteria (Jo atilde o et al 2016).…”

Section: Introductionmentioning

confidence: 99%

Biosorption of Lead and Copper by Epiphytic Rhizobacterial Species Isolated from <i>Lepironia articulata</i> and <i>Scirpus grossus</i>

Al-Ajalin,

Idris,

Abdullah

et al. 2024

J. Ecol. Eng.

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In this study, biosorption potential of nine epiphytic bacteria isolated from the rhizosphere of Lepironia articulata and Scirpus grossus were assessed. Identification of the isolated epiphytic rhizobacteria using 16S rRNA analysis showed species belonging to the four genera of Bacillus, Enterobacter, Aeromonas, and Chromobacterium. Batch biosorption studies were carried out to assess the capacity of the isolated bacteria to act as Pb and Cu biosorbents. Different initial concentrations of the two heavy metals (50, 100, 200, 300, and 400 ppm) were used to determine the ability of the biosorbent to reach a tolerance level and then calculate the percentage of biosorption with respect to 0.1 g dry weight. Initial concentration of Pb and Cu exposed showed that the isolated bacteria have high tolerance up to 400 ppm. Bacteria prefer Pb ions over Cu, which is indicated by higher removal of Pb in all tested reactors. Bacillus sp. (coded Sc1) showed the highest biosorption capacity with 100% Pb and 97% Cu removal.

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Practical limitations of bioaugmentation in treating heavy metal contaminated soil and role of plant growth promoting bacteria in phytoremediation as a promising alternative approach

Cited by 53 publications

References 133 publications

Clean-Up of Heavy Metals from Contaminated Soil by Phytoremediation: A Multidisciplinary and Eco-Friendly Approach

Clean-Up of Heavy Metals from Contaminated Soil by Phytoremediation: A Multidisciplinary and Eco-Friendly Approach

Combined Plant Growth-Promoting Bacteria Inoculants Were More Beneficial than Single Agents for Plant Growth and Cd Phytoextraction of Brassica juncea L. during Field Application

Biosorption of Lead and Copper by Epiphytic Rhizobacterial Species Isolated from <i>Lepironia articulata</i> and <i>Scirpus grossus</i>

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