scholarly journals Impregnation of zinc oxide modified clay over alginate beads: a novel material for the effective removal of congo red from wastewater

RSC Advances ◽  
2017 ◽  
Vol 7 (10) ◽  
pp. 5669-5678 ◽  
Author(s):  
Shappur Vahidhabanu ◽  
D. Karuppasamy ◽  
Abideen Idowu Adeogun ◽  
B. Ramesh Babu
Keyword(s):  
Aqueous Solution ◽  
Zinc Oxide ◽  
Congo Red ◽  
Packed Column ◽  
Alginate Beads ◽  
Alginate Hydrogel ◽  
Hydrogel Beads ◽  
Modified Clay ◽  
Effective Removal ◽  
Novel Material

Alginate hydrogel beads were impregnated with zinc oxide (ZnO) modified sepiolite clay and applied for the removal of congo red (CR) dye from its aqueous solution in batch and packed column systems.

scholarly journals Effective Removal of Congo Red by Triarrhena Biochar Loading with TiO2 Nanoparticles

Scanning ◽  
2018 ◽  
Vol 2018 ◽  
pp. 1-7
Author(s):  
Peng Yu ◽  
Tao Hu ◽  
Hong Hui Chen ◽  
Fangfang Wu ◽  
Hui Liu
Keyword(s):  
Aqueous Solution ◽  
Tio2 Nanoparticles ◽  
Congo Red ◽  
Sol Gel ◽  
Environmentally Friendly ◽  
Absorption Capacity ◽  
Gel Method ◽  
Effective Removal ◽  
Macropore Structure ◽  
Prepared Composite

A composite of pyrolytic Triarrhena biochar loading with TiO2 nanoparticles has been synthesized by the sol-gel method. The composite shows a well-developed hollow mesoporous and macropore structure as characterized by XRD, BET, and SEM. When used as an absorbent to remove Congo red from aqueous solution, it was found that as-prepared composite performed better absorption capacity than single biochar or TiO2. The results suggest that biochar loading with TiO2 could be promisingly implemented as an environmentally friendly and inexpensive adsorbent for Congo red removal from wastewater.

scholarly journals Alginate hydrogel beads embedded with drug-bearing polycaprolactone microspheres for sustained release of paclobutrazol

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Alexandra Mun ◽  
Haneen Simaan Yameen ◽  
Giora Edelbaum ◽  
Dror Seliktar
Keyword(s):  
Controlled Release ◽  
Biomedical Applications ◽  
Water Immersion ◽  
Alginate Beads ◽  
Model System ◽  
Growth Retardant ◽  
Alginate Hydrogel ◽  
Release Formulation ◽  
Polymeric Systems ◽  
Hydrogel Beads

AbstractIn recent years there has been a growing demand for the development of agrochemical controlled release (CR) technologies. In the present study, we aimed to create a novel agricultural CR device using two polymeric systems that have been predominantly employed in biomedical applications: beads of alginate hydrogel embedded with drug-bearing Polycaprolactone (PCL) microspheres. The combined device utilizes the advantages of each polymer type for biodegradation and controlled release of Paclobutrazol (PBZ), a common growth retardant in plants. Surface morphology of the alginate beads was characterized by scanning electron microscopy (SEM) and water immersion tests were performed for stability and controlled release measurements. Bioassays were performed both in accelerated laboratory conditions and in field conditions. The results showed a capability to control the size of PBZ-loaded PCL microspheres through modification of homogenization speed and emulsifier concentration. Enlargement of PCL microsphere size had an adverse effect on release of PBZ from the alginate device. The growth of oatmeal plants as a model system was affected by the controlled release of PBZ. The preliminary field experiment observed growth retardation during two consecutive rainy seasons, with results indicating a substantial benefit of the sustained growth inhibition through the controlled release formulation. The final product has the potential to be used as a carrier for different substances in the agrochemical industry.

Fabrication of monodisperse alginate microgel beads by microfluidic picoinjection: A chelate free approach

Lab on a Chip ◽  
2021 ◽  
Author(s):  
Husnain Ahmed ◽  
Bjørn Torger Stokke
Keyword(s):  
Calcium Alginate ◽  
Biomedical Applications ◽  
Alginate Beads ◽  
Alginate Hydrogel ◽  
Hydrogel Beads ◽  
Ca Alginate

Micron-sized alginate hydrogel beads are extensively employed as an encapsulation medium for biochemical and biomedical applications. Here we report on the microfluidic assisted fabrication of calcium alginate (Ca-alginate) beads by...

Biomass-derived magnetically tuned carbon modified sepiolite for effective removal of Congo red from aqueous solution

2020 ◽  
Vol 184 ◽  
pp. 326-339
Author(s):  
Shappur Vahidhabanu ◽  
Irulappan Swathika ◽  
Abideen Idowu Adeogun ◽  
Ramakrishnan Roshni ◽  
B. Ramesh Babu
Keyword(s):  
Aqueous Solution ◽  
Congo Red ◽  
Effective Removal
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