Decolourization performance in C. I. Vat Yellow 1 aqueous suspension using hydrophobically modified poly(acrylic acid)

2011 ◽  
Vol 63 (8) ◽  
pp. 1638-1643 ◽  
Author(s):  
J. Chen ◽  
M. C. Chen
Keyword(s):  
Acrylic Acid ◽  
Aqueous Suspension ◽  
Quantitative Relationship ◽  
Scanning Calorimetry ◽  
Hydrophobically Modified ◽  
Fluid Behavior ◽  
Nmr Spectrometry ◽  
Absorbance Data ◽  
Better Than ◽  
Poly Acrylic Acid

A series of hydrophobically modified poly(acrylic acid) (PAA), poly(2-phenoxyethyl acrylate-co-acrylic acid) (poly(PHEA-co-AA)), have been synthesized and characterized by Ubbelohde type viscometry, Nuclear Magnetic Resonance (1H NMR) spectrometry and Differential Scanning Calorimetry (DSC). The shear thinning Non-Newtonian fluid behavior of their aqueous solution and the dependence on pH and hydrophobic group contents were found through apparent viscosity and rheological property investigating. Decolourization performance in C. I. Vat Yellow 1 aqueous suspension was evaluated through visible absorbance data. Decolourization performance of hydrophobically associated polymer indicates two times better than that of PAA. The quantitative relationship was mainly studied.

Immobilizing Bacillus subtilis on the carrier of poly (acrylic acid)/sodium bentonite for treating sludge from Pangasius fish ponds

2021 ◽  
Vol 6 (1) ◽  
pp. 43-49
Author(s):  
Thanh Duoc Nguyen ◽  
Binh Doan ◽  
Thu Hong Pham Thi
Keyword(s):  
Bacillus Subtilis ◽  
Acrylic Acid ◽  
Absorbed Dose ◽  
Pond Water ◽  
Reaction Yield ◽  
Fish Ponds ◽  
Adsorption Method ◽  
Sodium Bentonite ◽  
Better Than ◽  
Poly Acrylic Acid

Sodium bentonite (NaBent) was modified by poly(acrylic acid) (PAAc) to prepare the carriers for immobilization of Bacillus subtilis. Different mixtures of NaBent/AAc were regularly dispersed in distilled water and irradiated under gamma rays at an absorbed dose of 6.5 kGy with dose rate of 0.85 kGy/hr in air for polymerization of acrylic acid and formation of poly(acrylic acid)/sodium bentonite (PAAc–NaBent). The reaction yield was determined with the initial concentration of acrylic acid (AAc). The functional group properties of the resulting PAAc–NaBent were analyzed by Fourier Transform Infrared spectra (FTIR). Bacillus subtilis cells were immobilized on both NaBent and PAAc–NaBent as carriers by adsorption method for treating the sludge contaminated by fish feces and residual feed from the Pangasius farming ponds. The results showed that immobilization capacity of Bacillus subtilis on the PAAc–NaBent was better than that on non-modified NaBent. Analysis of BOD for the farming pond water containing Bacillus subtilis and the bacteria immobilized carriers with time revealed the lower BOD values obtained with the samples containing PAAc–NaBent, suggested that degradation of organic pollutants by Bacillus subtilis immobilized on the PAAc–NaBent was faster than that by free bacteria.

Adsorption of Hydrophobically Modified Poly(acrylic acid) Sodium Salt at the Air/Water Interface by Combined Surface Tension and X-ray Reflectivity Measurements

Langmuir ◽  
1999 ◽  
Vol 15 (6) ◽  
pp. 2112-2119 ◽  
Author(s):  
Frédéric Millet ◽  
Michael Nedyalkov ◽  
Benjamin Renard ◽  
Patrick Perrin ◽  
Françoise Lafuma ◽  
...  
Keyword(s):  
Surface Tension ◽  
Acrylic Acid ◽  
Sodium Salt ◽  
Water Interface ◽  
X Ray ◽  
Hydrophobically Modified ◽  
Acid Sodium Salt ◽  
Air Water Interface ◽  
Poly Acrylic Acid

Hydrophobically modified polyelectrolytes II: synthesis and characterization of poly(acrylic acid-co-alkyl acrylate)

2001 ◽  
Vol 12 (11-12) ◽  
pp. 616-625 ◽  
Author(s):  
Dong-qing Zhuang ◽  
Jie Chen Ai-hua Da ◽  
Yun-xiang Zhang ◽  
Reinhold Dieing ◽  
Lian Ma ◽  
...  
Keyword(s):  
Acrylic Acid ◽  
Synthesis And Characterization ◽  
Hydrophobically Modified ◽  
Alkyl Acrylate ◽  
Poly Acrylic Acid

Dynamics and Energetics of the Self-Assembly of a Hydrophobically Modified Polyelectrolyte:  Naphthalene-Labeled Poly(Acrylic Acid)

2005 ◽  
Vol 109 (23) ◽  
pp. 11478-11492 ◽  
Author(s):  
Telma Costa ◽  
Maria da G. Miguel ◽  
Björn Lindman ◽  
Karin Schillén ◽  
J. Sérgio Seixas de Melo
Keyword(s):  
Acrylic Acid ◽  
Self Assembly ◽  
The Self ◽  
Hydrophobically Modified ◽  
Hydrophobically Modified Polyelectrolyte ◽  
Poly Acrylic Acid

Ultrasonic Synthesis and Properties of Sodium Lignosulfonate-grafted Poly(Acrylic Acid-co-Vinyl Alcohol) Composite Superabsorbent Polymer

2016 ◽  
Vol 69 (10) ◽  
pp. 1155 ◽  
Author(s):  
Chen Hao ◽  
Jun Li ◽  
Qiang He ◽  
Zilong Zhou ◽  
Xiaowei Guo ◽  
...  
Keyword(s):  
Acrylic Acid ◽  
Vinyl Alcohol ◽  
High Efficiency ◽  
Orthogonal Experiment ◽  
Physiological Saline ◽  
Water Absorbency ◽  
Superabsorbent Polymer ◽  
Sodium Lignosulfonate ◽  
Scanning Calorimetry ◽  
Poly Acrylic Acid

In this paper, a green and high-efficiency method (ultrasound synthesis) has been applied in the preparation of a sodium lignosulfonate-grafted poly(acrylic acid-co-vinyl alcohol) superabsorbent polymer (SL-P(AA-co-VA)). By Fourier-transform infrared spectroscopy, scanning electron microscopy, and thermogravimetry–differential scanning calorimetry, the successful preparation was confirmed. An L16(4)5 orthogonal experiment was carried out to optimize synthetic conditions for SL-P(AA-co-VA). Under the optimized synthetic conditions, maximum water absorbency (949 g g–1) and physiological saline absorbency (62 g g–1) were achieved. Adjusting pH reduces the water absorbency of SL-P(AA-co-VA), as does the presence of metal ions. However, a rise in temperature does not have a significant influence on it. In general, both the water absorbency and physiological saline absorbency of SL-P(AA-co-VA) were significantly improved versus P(AA-co-VA) superabsorbent.

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