Synthesis and characterization of a plant-based seed gum via etherification for effective treatment of high-strength agro-industrial wastewater

2017 ◽  
Vol 307 ◽  
pp. 928-938 ◽  
Author(s):  
Katrina Pui Yee Shak ◽  
Ta Yeong Wu
2020 ◽  
Vol 31 (2) ◽  
pp. 122-131
Author(s):  
Lenuța Crintea Căpăţână ◽  
Viorica Muşat ◽  
Silviu Polosan ◽  
Alina Cantaragiu ◽  
Vasile Başliu ◽  
...  

Abstract Industrial wastewater can be properly treated using nanotechnologies and nanomaterials. This paper presents the synthesis and characterization of three series of magnetic nanoparticles (MNPs) and corresponding thin films, used for the degradation of organic compounds and removal of heavy metals from industrial wastewater. The samples were obtained by co-precipitation from a ferric (Fe3+) and ferrous (Fe2+) ions solution in a molar ratio of 2:1, at temperatures between 80-95 °C. The characterization of the samples was performed by scanning electron microscopy (SEM), and X-ray diffraction (XRD) methods. The magnetic nanoparticles were deposited on glass substrates by the centrifugal coating technique and the optical and magneto-optical activity was investigated by UV-Vis spectroscopy and magnetic circular dichroism technique (MCD). The effect of the investigated samples on the decomposition under UV irradiation of organic dyes was monitored by UV-Vis spectroscopy. Our preliminary results have shown that the magnetite and maghemite MNPs can be effective in UV degradation of methylene blue (MB) dye.


2015 ◽  
Vol 41 (10) ◽  
pp. 13294-13303 ◽  
Author(s):  
A.V. Gorokhovsky ◽  
J.I. Escalante-Garcia ◽  
E. Sanchez-Valdes ◽  
I.N. Burmistrov ◽  
D.V. Kuznetsov

2006 ◽  
Vol 103 (5) ◽  
pp. 3045-3049 ◽  
Author(s):  
Ji Zhang ◽  
Shengtang Zhang ◽  
Yunpu Wang ◽  
Sufang Gao

2012 ◽  
Vol 549 ◽  
pp. 45-49
Author(s):  
Wei Hu ◽  
Guang Xian Zhang ◽  
Feng Xiu Zhang ◽  
Hui Zheng ◽  
Ming Lu

Aromatic polyamides are high performance materials, having outstanding thermal and mechanical properties. Poly(2,5-Diamino-terephthalic acid) (PATA) was designed as a novel aromatic polyamide with high strength and modulus. In this paper, 2,5-Diamino-terephthalic acid (DATA), as a monomer of PATA, was synthesized from 2,5-Dimetyl-1,4-phenyldiamine (DPA). First step was the amidation of DPA by reacting with acetic anhydride to protect amido group. Then N-(4–Acetylamino-2,5-dimethyl–phenyl)-acetamide (AMPA) was oxidized by potassium permanganate. Finally, AMPA was hydrolyzed by sodium hydroxide and the monomer DATA was precipitated by hydrochloric acid around PH 5. DATA and all the intermediate products were characterized and confirmed by 1HNMR and FT-IR spectra. They were all in great agreement with the proposed structure. The overall yield of DATA was about 40.0%.


1996 ◽  
Vol 61 (10) ◽  
pp. 3572-3572
Author(s):  
Lawrence T. Scott ◽  
Atena Necula

Sign in / Sign up

Export Citation Format

Share Document