SELECTIVE DECOLORIZATION OF ANIONIC TEXTILE DYE FROM BINARY SOLUTIONS BY ADSORPTION ONTO CHITOSAN-POLYANILINE/Fe3O4 NANOCOMPOSITE

In this study, chitosan-polyaniline/Fe3O4 nanocomposite material (CS-PANI/Fe3O4) was prepared by means of in-situ emulsion polymerization method. The synthesized material was then utilized as an adsorbent for the removal of Reactive blue 198 (RB198) from a single and binary dye system. The effects of pH, contact time, and initial dye concentration on the removal efficiency of the adsorbent were systematically investigated. The obtained results indicated that the adsorption ability toward RB198 of the prepared adsorbent decreased with an increase in the initial dye concentration and pH media. Meanwhile, the removal percentage of dye increased with increasing contact time. Importantly, approximately 92.4% RB198 was removed for an adsorption time of 120 min in single dye system. Adsorption experiment using a binary system of dyes indicated that the removal percentages of RB198 were 72.8% and 94.7% in the RB198-RR198 and RB198-CY mixture, respectively.

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EFISIENSI PENYERAPAN LOGAM Pb2+ DENGAN MENGGUNAKAN CAMPURAN BENTONIT DAN ENCENG GONDOK

Jurnal Teknik Kimia USU ◽

10.32734/jtk.v4i1.1455 ◽

2015 ◽

Vol 4 (1) ◽

pp. 20-24 ◽

Cited By ~ 1

Author(s):

M. Faisal

Keyword(s):

Water Hyacinth ◽

Contact Time ◽

Adsorption Process ◽

Adsorption Efficiency ◽

Adsorption Ability ◽

Adsorption Time

Adsorption of Pb2+by using a mix of bentonite and water hyacinth has been carried out in a bacth system. The purpose of the research is to investigate the abilty of the mix bentonite and water hyacinth to adsorp Pb2+. Prior to adsorption process, the mix of bentonite and water hyacnth was activated physcally by H2SO4. The adsorption ability between activated-adsorbend and without activated-adsorbend was then compared. In the activaved process, the mix of bentonite and water hyacinth used was 4 gram in weight and 120 ml of H2SO4 1,2 M. In this research, adsorption time of 30, 60, 120 menit, the speed of 50, 100, 150 rpm and the Pb2+concentration of 30, 35 and 40 mg/l were used. The result showed that the adsorption efficiency of activated-adsorbend is higher than that of without activaved. The maximum adsorption of 0,987 mg/g were obtained at Pb2+concentration of 40 mg/l with a contact time and speed of 120 min and 150 rpm, respetively.

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Adsorption of vanadium with amorphous hydrated chromium oxide

Water Practice & Technology ◽

10.2166/wpt.2021.078 ◽

2021 ◽

Author(s):

Hualin Li ◽

Hongling Zhang ◽

Minting Luo ◽

Yuming Dong ◽

Hongbin Xu ◽

...

Keyword(s):

Chromium Oxide ◽

High Efficiency ◽

Removal Rate ◽

Kinetic Curve ◽

Optimal Parameters ◽

Adsorption Ability ◽

Adsorption Time ◽

Effects Of Ph ◽

Pseudo Second Order ◽

Hydrated Oxide

Abstract Vanadium is recognized as a potentially dangerous pollutant following closely on lead, mercury and arsenic. Vanadium removal from wastewater prior to discharge is essential. In this work, an amorphous hydrated chromium oxide was prepared and its vanadium adsorption ability studied. As-prepared, the hydrated oxide showed high efficiency in vanadium adsorption – e.g., from 300 to 0.75 mg-V·L−1. The effects of pH, adsorbent dosage, temperature, adsorption time and the presence of other ions on the vanadium removal rate were investigated, and optimal parameters determined. Dynamic adsorption results showed that pseudo-second-order kinetics could be used to interpret the kinetic curve and that the process was that of chemisorption. The Langmuir isotherm was found to fit the adsorption behavior well.

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Highly exfoliated montmorillonite clay reinforced thermoplastic polyurethane elastomer:in situpreparation and efficient strengthening

RSC Advances ◽

10.1039/c8ra10121c ◽

2019 ◽

Vol 9 (15) ◽

pp. 8184-8196 ◽

Cited By ~ 7

Author(s):

Jingshui Xu ◽

Lihua Cheng ◽

Zhong Zhang ◽

Ling Zhang ◽

Cen Xiong ◽

...

Keyword(s):

Thermoplastic Polyurethane ◽

Montmorillonite Clay ◽

Solution Polymerization ◽

Polyurethane Elastomers ◽

Thermoplastic Polyurethane Elastomers ◽

Mmt Clay ◽

Polymerization Method

Highly exfoliated montmorillonite (MMT) clay reinforced thermoplastic polyurethane elastomers (TPUs) were prepared by anin situsolution polymerization method.

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Synthesis and Characterizations of Poly(Butylene Succinate) Copolyester

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.1015.381 ◽

2014 ◽

Vol 1015 ◽

pp. 381-384

Author(s):

Li Liu ◽

Li Hai Cai ◽

Dan Liu ◽

Jun Xu ◽

Bao Hua Guo

Keyword(s):

Mechanical Properties ◽

Polymer Matrix ◽

Crystallization Temperature ◽

In Situ Polymerization ◽

Nucleating Agent ◽

Single Fiber ◽

Butylene Succinate ◽

Crystallization Behaviors ◽

Polymerization Method

The poly (butylene succinate) (PBS) and 3 wt% attapulgite (ATP) reinforced PBS/ATP nanocomposites with 1,6-hexanediol were fabricated using an in situ polymerization method. The crystallization behaviors indicated that ATP had effectively acted as nucleating agent, resulting in the enhancement on the crystallization temperature. The SEM results showed a superior interfacial linkage between ATP and PBS. Also, ATP could disperse as a single fiber and embed in the polymer matrix, which resulted in the improved mechanical properties.

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Insulin Adsorption by Hydroxyapatite

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.396-398.65 ◽

2008 ◽

Vol 396-398 ◽

pp. 65-68

Author(s):

Elena Mavropoulos ◽

Nilce C.C. da Rocha ◽

Andrea Machado Costa ◽

Maria Helena M. Rocha-Leão ◽

Alexandre Mello ◽

...

Keyword(s):

Thermal Treatment ◽

Adsorption Experiment ◽

Adsorption Ability ◽

Adsorption And Desorption ◽

Synthetic Hydroxyapatite ◽

Pre Treatment

In this study, the insulin adsorption ability by synthetic hydroxyapatite was investigated. Hydroxyapatite before thermal treatment and heated at 900°C and 1100°C were incubated in a solution containing 32 mg insulin/gHA. Adsorption and desorption experiments were carried out at 37°C under constant and slowly stirring. From FTIR results it was observed that insulin was tightly attached to HA surface after 96 hours adsorption experiment. Thermal pre-treatment on HA samples had no effect on insulin adsorption. However, protein desorption was more pronounced on samples not submitted to thermal treatment.

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