Assessment of crude glycerol for Enhanced Biological Phosphorus Removal: Stability and role of long chain fatty acids

Tayà, Carlota; Guerrero, Javier; Suárez-Ojeda, María Eugenia; Guisasola, Albert; Baeza, Juán Antonio

doi:10.1016/j.chemosphere.2015.05.067

Cited by 13 publications

(4 citation statements)

References 44 publications

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“…The carbon chains in the NPs bilayer could improve the stability and prevent photobleaching of photothermal materials. 49,50 As Figure 3A shown, the temperature increased with the increase of nanoparticle concentration, when the ICD-Gd concentration reached 2 mg/mL, the temperature increased by ∼27 °C in 10 min, high enough to meet the requirement of photothermal therapy. As shown in Figure 3B, the ICD nanoparticle, which was not assembled with long carbon chain from DPC, could not rise to the first peak temperature when the second round of NIR irradiation was applied.…”

Section: Resultsmentioning

confidence: 97%

“…Although IR780 changed its maximum absorbance after connecting with DOTA-Gd via cystamine, the resulting DPC@ICD-Gd still showed broad absorption in the range of 700–850 nm (Figure C, D), which made it exhibit excellent and stable photothermal properties under NIR laser irradiation (808 nm). The carbon chains in the NPs bilayer could improve the stability and prevent photobleaching of photothermal materials. , As Figure A shown, the temperature increased with the increase of nanoparticle concentration, when the ICD-Gd concentration reached 2 mg/mL, the temperature increased by ∼27 °C in 10 min, high enough to meet the requirement of photothermal therapy. As shown in Figure B, the ICD nanoparticle, which was not assembled with long carbon chain from DPC, could not rise to the first peak temperature when the second round of NIR irradiation was applied.…”

Section: Resultsmentioning

confidence: 99%

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Anti-Tumor Metastasis via Platelet Inhibitor Combined with Photothermal Therapy under Activatable Fluorescence/Magnetic Resonance Bimodal Imaging Guidance

Zhang

Sun

et al. 2021

ACS Appl. Mater. Interfaces

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Photothermal therapy (PTT) is a promising tumor therapy strategy; however, heterogeneous heat distribution over the tumor often exists, resulting in insufficient photothermal ablation and potential risk of cancer metastasis, which has been demonstrated to be associate with platelets. Herein, a near-infrared (NIR) photothermal agent of IR780 was conjugated with MRI agent of Gd-DOTA via a disulfide linkage (ICD-Gd), which was coassembly with lipid connecting tumor-homing pentapeptide CREKA (Cys-Arg-Glu-Lys-Ala) (DSPE-PEG-CREKA) to encapsulate a platelet inhibitor of ticagrelor (Tic), affording a multistimuli-responsive nanosystem (DPC@ICD-Gd-Tic). The nanosystem with completely quenching fluorescence could specifically target the tumor-associated platelets and showed pH/reduction/NIR light-responsive drug release, which simultaneously resulting in dis-assembly of nanoparticle and fluorescence recovery, enabling the drug delivery visualization in tumor in situ via activatable NIR fluorescence/MR bimodal imaging. Finally, DPC@ICD-Gd-Tic further integrated the photoinduced hyperthermia and platelet function inhibitor to achieve synergistic anticancer therapy, leading to ablation of primary tumor cells and effectively suppressed their distant metastasis. The number of lung metastases in 4T1 tumor bearing mice was reduced by about 90%, and the size of tumor was reduced by about 70%, while half of the mouse was completely cured by this smart nanosystem.

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Section: Resultsmentioning

confidence: 97%

Section: Resultsmentioning

confidence: 99%

Anti-Tumor Metastasis via Platelet Inhibitor Combined with Photothermal Therapy under Activatable Fluorescence/Magnetic Resonance Bimodal Imaging Guidance

Zhang

Sun

et al. 2021

ACS Appl. Mater. Interfaces

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“…144 peaks appeared on the chromatograph from the A-stage sludge supernatant (Supplementary material), but only (30%) could be identified with a match percentage greater than 80% ( Figure 2 top left). Their concentration was not higher than 5 µg/L, except for a few acid compounds detected at a higher concentration such as dodecanoic (11.2 µg/L), hexadecanoic (28.5 µg/L), oleic (21.1 µg/L) and octadecanoic acids (20.5 µg/L) ( It has been recently reported that LCFA can be used as sole carbon source for EBPR and were found to enhance PAO activity (Tayà et al, 2015). It is also possible that some of the compounds detected in this study by GC-MS were inhibitory or toxic to PAOs which can explain why the Bio-P removal was not stable according to Qing (2015).…”

Section: Gc-ms Analysis Of Recalcitrant Compounds and Smps In Ab Processmentioning

confidence: 99%

Identification of recalcitrant compounds in a pilot-scale AB system: An adsorption (A) stage followed by a biological (B) stage to treat municipal wastewater

Trzcinski

Ganda

et al. 2016

Bioresource Technology

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This manuscript presents a comparison of the A-stage and B-stage sludges in terms of anaerobic biodegradability and low molecular weight compounds present in the supernatant using Gas Chromatography-Mass Spectrometry (GC-MS). The GC-MS analysis of A-stage and B-stage supernatants identified respectively 43 and 19 organic compounds consisting mainly of aromatics (27.9% and 21%), alcohols (25.6% and 15%) and acids (30.2% and 15%). The methane potential was found to be 349±1 mL CH4/g VS and 238±12 mL CH4/g VS, respectively. After anaerobic digestion of these sludges, a greater proportion of aromatics (42% and 58%) and a lower proportion of acids (10% and 10%) and alcohols (16% and 10%) was observed.

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“…Enhanced biological P removal (EBPR) is accomplished by polyphosphate (polyP) accumulating organisms (PAOs), which anaerobically assimilate and reserve volatile fatty acids (VFAs) as polyhydroxyalkanoates (PHAs) and later use them for aerobic or anoxic P uptake [5]. However, the A 2 O process always experiences unstable performance due to insufficient influent carbon source, hydraulic shock, and the impact of excessive nitrate loading [1,[6][7][8], etc.…”

Section: Introductionmentioning

confidence: 99%

Impact of Dissolved Oxygen on the Performance and Microbial Dynamics in Side-Stream Activated Sludge Hydrolysis Process

Wang

Zhang

et al. 2023

Water

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Dissolved oxygen (DO) plays an important role in the performance of biological wastewater treatment systems. This study investigated the effect of the DO concentration on nutrient removal performance and microbial community structure in side-stream activated sludge hydrolysis (SSH) and conventional anaerobic/anoxic/aerobic (A2O) processes. The results showed that the change in DO had little effect on the removal performance of chemical oxygen demand (COD), and the removal efficiencies were about 90% for both reactors. Compared with the high DO level (4.1–6.9 mg/L), the A2O and SSH reactors had better nitrogen removal performance at low (0.5–2.2 mg/L) and moderate (2.2–3.9 mg/L) DO levels, with ammonia (NH4+-N) removal efficiencies of 88–89% and 89–91%, respectively, and total nitrogen (TN) removal efficiencies of 74–76% and 75–81%, respectively. Directly reducing the DO concentration from high to low reduced the phosphate removal efficiencies of the A2O and SSH reactors from 80.2% and 86.2% to 63.1% and 70.6%, respectively, while re-elevating the DO concentration to moderate levels significantly improved the phosphate removal efficiencies to 94.6% and 96.0%, respectively. Compared to the A2O reactor, the SSH reactor had more stable and better nutrient removal performance under different DO conditions, partly due to the additional carbon sources produced through the sludge fermentation in the side-stream reactor. The decrease in the DO concentration resulted in a decrease in the relative abundance of Acinetobacter but an increase in the relative abundance of Competibacter, potentially leading to the deterioration in phosphorus removal.

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Assessment of crude glycerol for Enhanced Biological Phosphorus Removal: Stability and role of long chain fatty acids

Cited by 13 publications

References 44 publications

Anti-Tumor Metastasis via Platelet Inhibitor Combined with Photothermal Therapy under Activatable Fluorescence/Magnetic Resonance Bimodal Imaging Guidance

Anti-Tumor Metastasis via Platelet Inhibitor Combined with Photothermal Therapy under Activatable Fluorescence/Magnetic Resonance Bimodal Imaging Guidance

Identification of recalcitrant compounds in a pilot-scale AB system: An adsorption (A) stage followed by a biological (B) stage to treat municipal wastewater

Impact of Dissolved Oxygen on the Performance and Microbial Dynamics in Side-Stream Activated Sludge Hydrolysis Process

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