In this study, the effects of the precipitation of low concentrations of rare earth ions by excess sludge humic-like acids were evaluated. Scanning electron microscopy with energy-dispersive spectroscopy (SEM/EDS) and infrared (IR) spectroscopy revealed that the addition of humic-like acids to low...
& Hama, T. Bacterial production of marine humic-like fluorescent dissolved organic matter and its biogeochemical importance. Aquat. Microb. Ecol. 58, 55–66 (2009). Article Google Scholar Paerl, R. W. et al. Dityrosine formation via reactive oxygen consumption yields increasingly recalcitrant ...
The biochar’s large surface area and presence of resistant aromatic groups, along with the addition of humic-like compounds, could contribute to the observed rise in SCEC after biochar incorporation (Karimi et al. 2020; Liu et al. 2012, 2021; Mahmoud et al. 1990, 2020). This significant...
This again suggests a modification (increase) in the bacterial consumption of humic-like substances in the DOM exudates in the presence of MP (Fig. 4B). Humic substances can be both consumed and produced by marine bacteria36,37. In the more productive conditions of ES2, samples in dark ...
The electron transfer from microorganisms to the electrode in mediated MFC is facilitated by external or internal electron carriers (mediators) such as methylene blue, humic acid, thionine, ferricyanide, and methyl viologen, the majority of which are toxic and expensive [64]. Electron transfer in ...
The EPS are a mixture of polysaccharides, mucopolysaccharides, proteins, humic substances, uric acid, lipids, and glycoproteins that depend on the microbes and culture conditions (Sheng et al., 2010, Ahemad and Kibret, 2013). For example, EPS produced by Gram-negative bacteria are neutral or ...
Humic acids are one example of a naturally occurring or naturally generated refractory substance that is frequently nontoxic and typically does not harm the environment [85]. Humic acids stay in natural settings for a long time but do not accumulate and finally become mineralized. Humic acids could...
This type of MFC is electrochemically inactive. That means, the bacteria in the fuel cannot transfer the electrons without any support from a mediator like humic acid. Mediators used in this type are undesirable, toxic, and expensive. The mediator reduces the oxidizing state by capturing the elec...
Shimotori, K., Omori, Y. & Hama, T. Bacterial production of marine humic-like fluorescent dissolved organic matter and its biogeochemical importance.Aquat. Microb. Ecol.58, 55–66 (2009). ArticleGoogle Scholar Paerl, R. W. et al. Dityrosine formation via reactive oxygen consumption yields ...
Instrument stability was optimized using a Suwannee River Fulvic Acid standard (SRFA), obtained from the International Humic Substance Society. Potential carry-over between samples was monitored by injecting HPLC-grade methanol. The instrument was flushed between samples using a combination of milliQ ...