The impact of low molecular weight organic acids from plants with C3 and C4 photosystems on the rhizoremediation of polycyclic aromatic hydrocarbons contaminated soil

2020 ◽  
Vol 19 ◽  
pp. 100957
Author(s):  
Anithadevi Kenday Sivaram ◽  
Panneerselvan Logeshwaran ◽  
Robin Lockington ◽  
Ravi Naidu ◽  
Mallavarapu Megharaj
Keyword(s):  
Molecular Weight ◽  
Polycyclic Aromatic Hydrocarbons ◽  
Organic Acids ◽  
Aromatic Hydrocarbons ◽  
Contaminated Soil ◽  
Low Molecular Weight ◽  
Polycyclic Aromatic ◽  
The Impact

scholarly journals Using Low Molecular Weight Organic Acids to Enhance Microbial Degradation of Polycyclic Aromatic Hydrocarbons: Current Understanding and Future Perspectives

Water ◽  
2021 ◽  
Vol 13 (4) ◽  
pp. 446
Author(s):  
Lei Zhang ◽  
Jie Qiao ◽  
Haiyang Cui ◽  
Minghui Wang ◽  
Xiujuan Li
Keyword(s):  
Molecular Weight ◽  
Polycyclic Aromatic Hydrocarbons ◽  
Organic Acids ◽  
Microbial Degradation ◽  
Aromatic Hydrocarbons ◽  
Current Understanding ◽  
Low Molecular Weight ◽  
Future Perspectives ◽  
Polycyclic Aromatic ◽  
The Impact

Polycyclic aromatic hydrocarbons (PAHs), an organic pollutant with persistence and carcinogenicity, are universally present in the environment and food processing. Biological approaches toward remediating PAHs-contaminated sites are a viable, economical, and environmentally friendly alternative compared to conventional physical and/or chemical remediation methods. Recently, various strategies relating to low molecular weight organic acids (LMWOAs) have been developed to enhance the microbial degradation of PAHs. However, the remaining challenge is to reveal the role of LMWOAs in the PAHs biodegradation process, and the latter limits researchers from expanding the application scope of biodegradation. In this mini-review, we summarized the current understanding of the impact of LMWOAs on (1) the physicochemical behavior of PAHs in the extracellular environment; (2) the interactions between PAHs and the microbial cell surface; and (3) the intracellular metabolization of PAHs. Future perspectives for this field are discussed in this review as well.

Low molecular weight organic acids enhance the high molecular weight polycyclic aromatic hydrocarbons degradation by bacteria

Chemosphere ◽  
2019 ◽  
Vol 222 ◽  
pp. 132-140 ◽  
Author(s):  
Anithadevi Kenday Sivaram ◽  
Panneerselvan Logeshwaran ◽  
Robin Lockington ◽  
Ravi Naidu ◽  
Mallavarapu Megharaj
Keyword(s):  
Molecular Weight ◽  
Polycyclic Aromatic Hydrocarbons ◽  
Organic Acids ◽  
High Molecular Weight ◽  
Aromatic Hydrocarbons ◽  
Low Molecular Weight ◽  
Polycyclic Aromatic

scholarly journals The significance of pyrogenic polycyclic aromatic hydrocarbons in Borneo peat core for the reconstruction of fire history

PLoS ONE ◽  
2021 ◽  
Vol 16 (9) ◽  
pp. e0256853
Author(s):  
Sher-Rine Kong ◽  
Masanobu Yamamoto ◽  
Hasrizal Shaari ◽  
Ryoma Hayashi ◽  
Osamu Seki ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Polycyclic Aromatic Hydrocarbons ◽  
Aromatic Hydrocarbons ◽  
Fire History ◽  
Low Molecular Weight ◽  
Aromatic Rings ◽  
Peat Core ◽  
Polycyclic Aromatic ◽  
Core Depth ◽  
Similar Depth

The reconstruction of fire history is essential to understand the palaeoclimate and human history. Polycyclic aromatic hydrocarbons (PAHs) have been extensively used as a fire marker. In this work, the distribution of PAHs in Borneo peat archives was investigated to understand how PAHs reflect the palaeo-fire activity. In total, 52 peat samples were analysed from a Borneo peat core for the PAH analysis. Pyrogenic PAHs consist of 2–7 aromatic rings, some of which have methyl and ethyl groups. The results reveal that the concentration of pyrogenic PAHs fluctuated with the core depth. Compared to low-molecular-weight (LMW) PAHs, the high-molecular-weight (HMW) PAHs had a more similar depth variation to the charcoal abundance. This finding also suggests that the HMW PAHs were mainly formed at a local fire near the study area, while the LMW PAHs could be transported from remote locations.

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