Interaction of nano-quantum dots (CdSe@ZnS) and extracellular proteins in activated sludge revealed by bio-nano science

2020 ◽  
Vol 7 (9) ◽  
pp. 2795-2808
Author(s):  
Aibin Hu ◽  
Weijun Zhang ◽  
Guiying Liao ◽  
Dongsheng Wang ◽  
Yongzhen Peng
Keyword(s):  
Quantum Dots ◽  
Activated Sludge ◽  
Extracellular Proteins ◽  
Active Sludge ◽  
Novel Approach ◽  
System P ◽  
Nano Science ◽  
Insight Into

This work describes a novel approach for the purification of extracellular proteins (EP) from activated sludge, and provides an insight into the interaction between NPs and actual EP in the active sludge (AS) system.

Anodic stripping voltammetry of anti-Vi antibody functionalized CdTe quantum dots for the specific monitoring of Salmonella enterica serovar Typhi

RSC Advances ◽  
2015 ◽  
Vol 5 (107) ◽  
pp. 88234-88240 ◽  
Author(s):  
Satish K. Pandey ◽  
Praveen Rishi ◽  
C. Raman Suri ◽  
Aaydha C. Vinayaka
Keyword(s):  
Quantum Dots ◽  
Capsular Polysaccharide ◽  
Anodic Stripping Voltammetry ◽  
Stripping Voltammetry ◽  
Cdte Quantum Dots ◽  
Salmonella Enterica Serovar Typhi ◽  
Novel Approach ◽  
Anodic Stripping ◽  
Vi Capsular Polysaccharide ◽  
Insight Into

CdTe QD based stripping voltammetry for Vi capsular polysaccharide detection. The technique has provided an insight into the competence of CdTe QD and GNP immuno-conjugates. This is a novel approach to characterize the efficiency of immuno-conjugates of QDs and GNPs.

Mechanism Insight into Rapid Photodriven Sterilization Based on Silver Bismuth Sulfide Quantum Dots

2021 ◽  
Author(s):  
Shengwu Wen ◽  
Tianhua Wu ◽  
Hui Long ◽  
Liying Ke ◽  
Suiping Deng ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Bismuth Sulfide ◽  
Insight Into

scholarly journals Influent with Particulate Substrate, Clean, Innocuous and Sustainable Solution for Bulking Control and Mitigation in Activated Sludge Process

Water ◽  
2021 ◽  
Vol 13 (7) ◽  
pp. 984
Author(s):  
Pedro Cisterna-Osorio ◽  
Claudia Calabran-Caceres ◽  
Giannina Tiznado-Bustamante ◽  
Nataly Bastias-Toro
Keyword(s):  
Activated Sludge ◽  
Suspended Solids ◽  
Nutrient Deficiency ◽  
Microscopic Analysis ◽  
Volume Index ◽  
Favorable Effect ◽  
Batch Reactors ◽  
Sequencing Batch Reactors ◽  
Active Sludge ◽  
Chemical Reagents

This research studies the incidence of the type of substrate, soluble or particulate, in the emergence, development, and inhibition of bulking in activated sludge systems. It was evaluated using the sludge volume index (SVI), mixing liquor-suspended solids (MLSS), microscopic analysis of biomass, and effluent suspended solids (ESS). In the first experiment, four sequencing batch reactors (SBRs) were fed with soluble substrate at a fixed mass, while the mass of the particulate substrate varied, as those (saccharose mass/flour mass) ratios were 3:1, 3:2, 3:3 and 3:4., with a deficit ranging from 20 to 30% compared to the ratio recommended. The four SBRs have similar MLSS, IVL, and ESS. From day 30, with a deficit from 80 to 90%, the influents have ratios 1/1 and 1/2 until 48 days. The SBRs present IVL between 600 and 730 mL/g and ESS from 370 to 440 mg/L; unlike influents with ratios 1/3 and 1/4, they present IVL between 170 and 185 mL/g, and ESS from 260 to 270 mg/L. The favorable effect of particulate matter is categorical. In the second set of experiments, two SBRs were studied: SBR 1 fed with saccharose, and SBR 2 with flour; there is a lack of nutrients causing bulking in SBRs. Once the nutrient deficiency condition is changed in day 11 to excess, after 22 days, the SVI was 190 mL/g, ESS was 360 mg/L, and MLSS was 2000 mg/L for influents with saccharose; the influent with flour, with an SVI of 80 mL/g, ESS of 100 mg/L, and MLSS of 4000 mg/L, shows faster and more consistent recovery with the particulate substrate. Therefore, the proposal is to add particulate substrate-like flour to active sludge plants facing bulking. It is a clean, innocuous and sustainable alternative to processes that use chemical reagents.

In-line single-phase extraction for direct determination of total iron in oils using CdTe quantum dots and a flow-batch system

2015 ◽  
Vol 7 (18) ◽  
pp. 7707-7714 ◽  
Author(s):  
Marcelo B. Lima ◽  
Stéfani Iury E. Andrade ◽  
Inakã S. Barreto ◽  
Mário César U. Araújo
Keyword(s):  
Quantum Dots ◽  
Single Phase ◽  
Direct Determination ◽  
Total Iron ◽  
Cdte Quantum Dots ◽  
Phase Extraction ◽  
Batch System ◽  
System P ◽  
Novel Method

In this work, a novel method for direct determination of total iron in viscous samples is presented.

scholarly journals Unravelling diversity and metabolic potential of microbial consortia at each stage of leather sewage treatment

RSC Advances ◽  
2017 ◽  
Vol 7 (66) ◽  
pp. 41727-41737 ◽  
Author(s):  
Hebin Liang ◽  
Dongdong Ye ◽  
Lixin Luo
Keyword(s):  
Wastewater Treatment ◽  
Activated Sludge ◽  
Treatment Process ◽  
Sewage Treatment ◽  
Microbial Consortia ◽  
Biological Wastewater Treatment ◽  
Metabolic Potential ◽  
Ecological Functions ◽  
Wastewater Treatment Process ◽  
System P

Activated sludge is essential for the biological wastewater treatment process and the identification of active microbes enlarges awareness of their ecological functions in this system.

scholarly journals High-efficiency photocatalytic CO2 reduction in organic–aqueous system: a new insight into the role of water

RSC Advances ◽  
2018 ◽  
Vol 8 (7) ◽  
pp. 3798-3802 ◽  
Author(s):  
Jinliang Lin ◽  
Rongying Liao ◽  
Junli Xu
Keyword(s):  
High Efficiency ◽  
Co2 Reduction ◽  
Liquid System ◽  
Aqueous System ◽  
Binary Liquid System ◽  
Binary Liquid ◽  
System A ◽  
System P ◽  
Insight Into

A high efficiency photocatalytic conversion of CO2 into CO has been achieved by construction of a binary liquid system.

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