Enhanced Removal of Dissolved Humic Acid from Water Using Eco‐Friendly Phenylalanine‐Modified‐Chitosan Fe 3 O 4 Magnetic Nanoparticles

2020 ◽  
Vol 5 (14) ◽  
pp. 4285-4291
Author(s):  
Shujun Wang ◽  
Enze Li ◽  
Yazhuo Li ◽  
Jianfeng Li ◽  
Zhiping Du ◽  
...  
Keyword(s):  
Magnetic Nanoparticles ◽  
Humic Acid ◽  
Modified Chitosan

Rapid and Highly Efficient Preconcentration of Eu(III) by Core–Shell Structured Fe3O4@Humic Acid Magnetic Nanoparticles

2012 ◽  
Vol 4 (12) ◽  
pp. 6891-6900 ◽  
Author(s):  
Shitong Yang ◽  
Pengfei Zong ◽  
Xuemei Ren ◽  
Qi Wang ◽  
Xiangke Wang
Keyword(s):  
Magnetic Nanoparticles ◽  
Humic Acid ◽  
Core Shell ◽  
Highly Efficient

scholarly journals Fluorescence Modified Chitosan-Coated Magnetic Nanoparticles for High-Efficient Cellular Imaging

2009 ◽  
Vol 4 (4) ◽  
pp. 287-295 ◽  
Author(s):  
Yuqing Ge ◽  
Yu Zhang ◽  
Shiying He ◽  
Fang Nie ◽  
Gaojun Teng ◽  
...  
Keyword(s):  
Magnetic Nanoparticles ◽  
Cellular Imaging ◽  
Modified Chitosan ◽  
High Efficient

Sonochemical Composition of Humic Substances with Magnetic Nanoparticles and H2O2

2014 ◽  
Vol 522-524 ◽  
pp. 439-444
Author(s):  
Song Lin Wang ◽  
Ming Dan ◽  
Si Wu ◽  
Ning Zhou ◽  
Qi Zhang
Keyword(s):  
Magnetic Nanoparticles ◽  
Humic Acid ◽  
Humic Substances ◽  
Removal Efficiency ◽  
Enhancement Effect ◽  
Oh Radicals ◽  
Acid Degradation ◽  
Adsorption Surface

The experiments of TOC and UV254 removal of humic acid (HA) solution by ultrasound (US) irradiation with the presence of H2O2 and Fe3O4 nanoparticles (NP) were carried out. The comparison of enhancement effect of humic acid sonolysis by H2O2 and NP was investigated. It was found that removal efficiency of TOC and UV254 increased significantly in the order of US< US/NP< US/H2O2< NP/H2O2< US/NP/H2O2. During US/NP/H2O2 combining process, the contribution of H2O2 should be presenting most OH radicals for humic acid degradation, Fe3O4 nanoparticles would supply adsorption surface for humic acid to have more chance to be oxidized, and ultrasonic would work as main energy for OH radicals generation and offer sonochemical environment.

scholarly journals Efficiency of Photocatalytic Degradation of Humic Acid Using Magnetic Nanoparticles (Fe-doped TiO2@Fe3O4) in Aqueous Solutions

Health Scope ◽  
2020 ◽  
Vol 9 (2) ◽  
Author(s):  
Hossein Moein ◽  
Gholamreza Nabi Bidhendi ◽  
Naser Mehrdadi ◽  
Hossein Kamani
Keyword(s):  
Magnetic Nanoparticles ◽  
Humic Acid ◽  
Aqueous Solutions ◽  
Photocatalytic Degradation ◽  
High Efficiency ◽  
Sol Gel ◽  
Reaction Times ◽  
Doped Tio2 ◽  
Natural Organic Matters ◽  
Uv Lamp

Background: Among water pollutants, Natural Organic Matters (NOMs) are highly important for making problems in water treatment plants. Objectives: The main objective of this study was to investigate the efficiency of photocatalytic degradation of humic acid using magnetic nanoparticles (Fe-doped TiO2@Fe3O4) in aqueous solutions. Methods: In the present experiment, Fe-doped TiO2@Fe3O4 nanoparticles were synthesized by the sol-gel method, and SEM, XRD, and DRS analyzes were utilized to characterize the synthesized nanoparticles. The effects of various variables, including pH (3 - 11), initial concentration of humic acid (20 - 80 mg/L), and concentration of nanoparticles (250 - 2000 mg/L) at different reaction times (15 - 60 min) were investigated on the photocatalytic degradation of humic acid. Results: The maximum degradation efficiency of humic acid at pH 3, the initial humic acid concentration of 5 mg/L, nanoparticle dose of 400 mg/L, and reaction time of 60 min using a 15-W bare UV lamp. Conclusions: Due to the high efficiency of photocatalytic degradation, it is proposed to use for the removal of humic acid from water resources.

Removal of methylene blue from aqueous solution using humic-acid coated magnetic nanoparticles

2014 ◽  
Vol 55 (2) ◽  
pp. 539-548 ◽  
Author(s):  
Rong Ping Chen ◽  
Yin Long Zhang ◽  
Xiao Yan Wang ◽  
Cheng Yue Zhu ◽  
Ai Jun Ma ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Methylene Blue ◽  
Magnetic Nanoparticles ◽  
Humic Acid

scholarly journals Surface-Bound Humic Acid Increased Propranolol Sorption on Fe3O4/Attapulgite Magnetic Nanoparticles

Nanomaterials ◽  
2020 ◽  
Vol 10 (2) ◽  
pp. 205
Author(s):  
Yuehua Deng ◽  
Yani Li
Keyword(s):  
Magnetic Nanoparticles ◽  
Humic Acid ◽  
Sorption Capacity ◽  
Sorption Process ◽  
Preparation Conditions ◽  
Effects Of Ph ◽  
Donor Acceptor ◽  
Sorbent Materials ◽  
Similar Preparation ◽  
Sorption Mechanisms

This study explored the feasibility of utilizing a novel sorbent humic acid (HA) coated Fe3O4/attapulgite (MATP) magnetic nanoparticles (HMATP) for the sorption of propranolol from aqueous solutions. MATP and bare Fe3O4 nanoparticles were also synthesized under similar preparation conditions. The FTIR, Zeta potential, XRD, VSM, TEM, and TGA analyses were conducted to characterize the sorbent materials. The effects of pH, sorbent dosage, ionic strength, HA in the aqueous solution, contact time and initial sorbate concentration on sorption of propranolol were investigated using batch sorption experiments. The results suggested that the sorption capacity of HMATP showed little change from pH 4 to 10. Na+ and Ca2+ slightly inhibited the sorption of propranolol on HMATP. While HA in solution enhanced both MATP and HMATP, which indicated that HMATP can resist HA interference in water. Further, the less leaching amounts of Fe and HA suggested a good stability of HMATP. In all conditions, sorption capacity of propranolol on HMATP was obviously higher than that on MATP, which indicated that surface-coated HA played an important role in the propranolol sorption process. Electrostatic interaction, cation exchange, hydrogen bonding, and π–π electron donor acceptor interactions were considered as the sorption mechanisms.

The practical utility of the synthesis FeNi3@SiO2@TiO2 magnetic nanoparticles as an efficient photocatalyst for the humic acid degradation

Chemosphere ◽  
2020 ◽  
Vol 239 ◽  
pp. 124723 ◽  
Author(s):  
Maryam Khodadadi ◽  
Tariq J. Al-Musawi ◽  
Hossein Kamani ◽  
Marcela Fernandes Silva ◽  
Ayat Hossein Panahi
Keyword(s):  
Magnetic Nanoparticles ◽  
Humic Acid ◽  
Practical Utility ◽  
Acid Degradation
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