scholarly journals Removal of Antibiotics from Aqueous Solutions by a Carbon Adsorbent Derived from Protein-Waste-Doped Biomass

ACS Omega ◽  
2020 ◽  
Vol 5 (30) ◽  
pp. 19187-19193 ◽  
Author(s):  
Jiamin Yu ◽  
Yan Kang ◽  
Wenjun Yin ◽  
Jinlin Fan ◽  
Zizhang Guo
Keyword(s):  
Aqueous Solutions ◽  
Carbon Adsorbent ◽  
Protein Waste

Development and Characterization of a Carbon-Based Composite Material for Reducing Patulin Levels in Apple Juice

2000 ◽  
Vol 63 (1) ◽  
pp. 106-110 ◽  
Author(s):  
H. J. HUEBNER ◽  
K. MAYURA ◽  
L. PALLARONI ◽  
C. L. AKE ◽  
S. L. LEMKE ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Aqueous Solutions ◽  
Apple Juice ◽  
Fixed Bed ◽  
Carbon Adsorbent ◽  
Breakthrough Capacity ◽  
Bed Porosity ◽  
Fixed Bed Adsorption

Patulin, a heterocyclic lactone produced by various species of Penicillium and Aspergillus fungi, is often detected in apple juices and ciders. Previous research has shown the effectiveness of granular activated carbon for reducing patulin levels in aqueous solutions, apple juices, and ciders. In this study, ultrafine activated carbon was bonded onto granular quartz to produce a composite carbon adsorbent (CCA) with a high carbonaceous surface area, good bed porosity, and increased bulk density. CCA in fixed-bed adsorption columns was evaluated for efficacy in reducing patulin levels from aqueous solutions and apple juice. Columns containing 1.0, 0.5, and 0.25 g of CCA were continuously loaded with a patulin solution (10 μg/ml) and eluted at a flow rate of 1 ml/min. Results indicated that 50% breakthrough capacities for patulin on 1.0-, 0.5-, and 0.25-g CCA columns were 137.5, 38.5, and 19.9 μg, respectively. The effectiveness of CCA to adsorb patulin and prevent toxic effects was confirmed in vitro using adult hydra in culture. Hydra were sensitive to the effects of patulin, with a minimal affective concentration equal to 0.7 μg/ml; CCA adsorption prevented patulin toxicity until 76% breakthrough capacity was achieved. Fixed-bed adsorption with 1.0 g of CCA was also effective in reducing patulin concentrations (20 μg/liter) in a naturally contaminated apple juice, and breakthrough capacities were shown to increase with temperature. Additionally, CCA offered a higher initial breakthrough capacity than pelleted activated carbon when compared in parallel experiments. This study suggests that CCA used in fixed-bed adsorption systems effectively reduced patulin levels in both aqueous solutions and naturally contaminated apple juice; however, the appearance and taste of apple juice may be affected by the treatment process.

Modification and application of mesoporous carbon adsorbent for removal of endocrine disruptor bisphenol A in aqueous solutions

2017 ◽  
Vol 53 (4) ◽  
pp. 2337-2350 ◽  
Author(s):  
Fang Liu ◽  
Yexin Dai ◽  
Shuang Zhang ◽  
Jiaman Li ◽  
Chaocheng Zhao ◽  
...  
Keyword(s):  
Bisphenol A ◽  
Aqueous Solutions ◽  
Mesoporous Carbon ◽  
Endocrine Disruptor ◽  
Carbon Adsorbent ◽  
Mesoporous Carbon Adsorbent

scholarly journals Hexavalent chromium ion and methyl orange dye uptake via a silk protein sericin–chitosan conjugate

RSC Advances ◽  
2018 ◽  
Vol 8 (48) ◽  
pp. 27027-27036 ◽  
Author(s):  
Swatantra Pratap Singh ◽  
Karthik Rathinam ◽  
Roni Kasher ◽  
Christopher J. Arnusch
Keyword(s):  
Methyl Orange ◽  
Aqueous Solutions ◽  
Hexavalent Chromium ◽  
Waste Product ◽  
Silk Protein ◽  
Dye Uptake ◽  
Silk Industry ◽  
Chromium Ion ◽  
Protein Waste ◽  
Methyl Orange Dye

Sericin, a protein waste product of the silk industry, was crosslinked with chitosan, and a chitosan–sericin conjugate (CS) was prepared, characterized and used to remove hexavalent chromium (Cr(vi)) ions and methyl orange dye from aqueous solutions.

Development of a bio-inspired photo-recyclable feather carbon adsorbent towards removal of amoxicillin residue in aqueous solutions

2019 ◽  
Vol 373 ◽  
pp. 1380-1388 ◽  
Author(s):  
Huiqin Li ◽  
Jingtao Hu ◽  
Xiaojing Wang ◽  
Lihui An
Keyword(s):  
Aqueous Solutions ◽  
Carbon Adsorbent

scholarly journals Adsorption of Cd(II) and Pb(II) ions from aqueous solutions using mesoporous activated carbon adsorbent: Equilibrium, kinetics and characterisation studies

2017 ◽  
Vol 5 (1) ◽  
pp. 679-698 ◽  
Author(s):  
Edidiong Asuquo ◽  
Alastair Martin ◽  
Petrus Nzerem ◽  
Flor Siperstein ◽  
Xiaolei Fan
Keyword(s):  
Activated Carbon ◽  
Aqueous Solutions ◽  
Carbon Adsorbent ◽  
Mesoporous Activated Carbon

Ultrathin frozen sections of yeast without aldehyde prefixation

1978 ◽  
Vol 36 (2) ◽  
pp. 58-59
Author(s):  
K. J. Böhm ◽  
a. E. Unger
Keyword(s):  
Aqueous Solutions ◽  
Biological Material ◽  
Yeast Cells ◽  
Frozen Sections ◽  
Good Preservation ◽  
Ultrathin Frozen Sections

During the last years it was shown that also by means of cryo-ultra-microtomy a good preservation of substructural details of biological material was possible. However the specimen generally was prefixed in these cases with aldehydes.Preparing ultrathin frozen sections of chemically non-prefixed material commonly was linked up to considerable technical and manual expense and the results were not always satisfying. Furthermore, it seems to be impossible to carry out cytochemical investigations by means of treating sections of unfixed biological material with aqueous solutions.We therefore tried to overcome these difficulties by preparing yeast cells (S. cerevisiae) in the following manner:

Imaging polymers, proteins and dna in aqueous solutions with the atomic force microscope

1989 ◽  
Vol 47 ◽  
pp. 32-33
Author(s):  
S.A.C. Gould ◽  
B. Drake ◽  
C.B. Prater ◽  
A.L. Weisenhorn ◽  
S.M. Lindsay ◽  
...  
Keyword(s):  
Amino Acids ◽  
Dna Sequencing ◽  
Aqueous Solutions ◽  
Atomic Force Microscope ◽  
Piezoelectric Crystal ◽  
Atomic Force ◽  
Structure Of Molecules ◽  
Optical Lever

The atomic force microscope (AFM) is an instrument that can be used to image many samples of interest in biology and medicine. Images of polymerized amino acids, polyalanine and polyphenylalanine demonstrate the potential of the AFM for revealing the structure of molecules. Images of the protein fibrinogen which agree with TEM images demonstrate that the AFM can provide topographical data on larger molecules. Finally, images of DNA suggest the AFM may soon provide an easier and faster technique for DNA sequencing.The AFM consists of a microfabricated SiO2 triangular shaped cantilever with a diamond tip affixed at the elbow to act as a probe. The sample is mounted on a electronically driven piezoelectric crystal. It is then placed in contact with the tip and scanned. The topography of the surface causes minute deflections in the 100 μm long cantilever which are detected using an optical lever.

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