Study of Potential of Marine Macroalgae Biochar for Acid Dyes Removal

The goal of this investigation was to check the feasibility of Ulva lactuca carbon could be used to adsorb acid yellow 19 dyes from an aqueous solution. A series of studies were carried out to determine the best conditions for acid dye adsorption. 90 percent colour removal was achieved when pH 3, 1 gm dose, 100 mg/L dye concentration were used for dye adsorption. During the analysis, it was discovered that as the carbon dose was raised, the dye elimination rate rose. The main objective of this study is to reduce solid waste disposal while also addressing the issue of seaweed and developing an effective plan

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One-step green synthesis of arginine-capped iron oxide/reduced graphene oxide nanocomposite and its use for acid dye removal

RSC Advances ◽

10.1039/c4ra03505d ◽

2014 ◽

Vol 4 (56) ◽

pp. 29357-29364 ◽

Cited By ~ 28

Author(s):

Tzu-Yang Lin ◽

Dong-Hwang Chen

Keyword(s):

Graphene Oxide ◽

Iron Oxide ◽

Reduced Graphene Oxide ◽

Dye Removal ◽

Acid Dye ◽

Acid Dyes ◽

Green Route ◽

Reduced Graphene ◽

One Step ◽

Dyes Removal

Arginine-capped iron oxide/reduced graphene oxide magnetic nano-adsorbent is synthesized via a one-step green route for acid dyes removal.

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Adsorption of Acid Dyes onto Wool in TX-100 Reverse Micelles

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.233-235.1366 ◽

2011 ◽

Vol 233-235 ◽

pp. 1366-1369

Author(s):

Shi Xiong Yi ◽

Yong Chun Dong

Keyword(s):

Reverse Micelles ◽

Dye Adsorption ◽

Water Soluble ◽

Molar Ratio ◽

Ionic Surfactant ◽

Acid Dye ◽

Acid Dyes ◽

Isotherm Equation ◽

Langmuir Isotherm Equation ◽

Ph Level

The non-ionic reverse micelles used for dyeing wool were prepared with a non-ionic surfactant Triton X-100 (TX-100) by injecting small amount of acid dye aqueous solution. And the adsorption properties of three water-soluble anionic acid dye including Mordant Black 9, Acid Black 234 and Acid Orange 156 onto wool in TX-100 reverse micelle were studied and compared. Then effect of W value (molar ratio of the injected water to TX-100) and pH level on dye adsorption was also investigated. The results indicate that Higher W value and Low pH level would increase the adsorption amount of the dye onto wool. The adsorption of the dye onto wool showed better agreement with Langmuir isotherm equation. Mordant Black 9 with lower molecular weight and one sulfonic group exhibited the higher adsorption capacity than the other dyes.

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Modification of Silicas and Their Investigation by Dye Adsorption

Adsorption Science & Technology ◽

10.1177/026361749701500501 ◽

1997 ◽

Vol 15 (5) ◽

pp. 333-340 ◽

Cited By ~ 11

Author(s):

T.D. Khokhlova ◽

Yu.S. Nikitin ◽

A.L. Detistova

Keyword(s):

Aqueous Solution ◽

Calcium Hydroxide ◽

Silica Gel ◽

Hydrolytic Stability ◽

Dye Adsorption ◽

Surface Characteristics ◽

Aluminium Chloride ◽

Acid Dye ◽

Kinetics Of

Various silicas (silica gel, silochrome, alumosilica, Aerosil and quartz) were modified by dehydroxylation, calcium hydroxide, aluminium chloride and organosilanes with hydrophobic and aminopropyl groups. The surface characteristics of the modified materials were evaluated by means of basic and acid dye adsorption from aqueous solution. The degree of modification, the hydrolytic stability of the organosilyl silicas and the rehydroxylation rate of the dehydroxylated silicas were determined via the kinetics of dye adsorption and their respective isotherms.

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Adsorption of several acid dyes from aqueous solution using activated carbon derived from teak sawdust: effect of surface acidity

Jurnal Teknik Kimia Indonesia ◽

10.5614/jtki.2007.6.1.1 ◽

2018 ◽

Vol 6 (1) ◽

pp. 530

Author(s):

Suryadi Ismadji

Keyword(s):

Aqueous Solution ◽

Activated Carbon ◽

Pore Size ◽

Surface Acidity ◽

Dye Adsorption ◽

Langmuir Equation ◽

Acid Dyes ◽

Modified Activated Carbon ◽

Adsorption Data ◽

Acid Blue

The adsorption of acid blue 9, acid blue 74 and acid orange 51 from aqueous solution using activated carbon derived from teak sawdust was studied in terms of dye molecular size, pore size and surface acidity of activated carbon. The experimental adsorption data were correlated with Langmuir equation. It was found that Langmuir equation could describe the adsorption data well with R2 higher than 0.95. The surface acidity of activated carbon plays a key role in dye adsorption on modified activated carbon. The interaction between the oxygen-free Lewis basic sites and the free electrons of the dye molecule were the main adsorption mechanism in the adsorption process on modified activated carbon. The adsorption capacities of activated carbon on the adsorption of acid dyes decreased in the order unmodified > modified at 100 oC > modified at 150 oC.Keywords: Activated Carbon, Adsorption, Pore Size, Surface Acidity AbstrakAdsorpsi zat warna acid blue 9, acid blue 74, dan orange 51 dari larutan dengan menggunakan karbon aktif yang terbuat dari serbuk gergaji kayu jati dipelajari sebagai fungsi ukuran molekul zat warna, ukuran pori, dan sifat asampermukaan karbon aktif. Data percobaan adsorpsi kemudian dikorelasikan dengan menggunakan persamaan Langmuir. Dari hasil percobaan yang diperoleh dapat dilihat bahwa persamaan Langmuir dapat menggambarkan data adsorpsi isotermal dengan baik dengan Ro lebih besar dari 0,95. Sifat asam permukaan memegang peranan yang sangat penting pada proses adsorpsi zat warna pada proses adsorpsi zat warna pada karbon aktif yang telah dimodifikasi. Interaksi antara bagian oxygen-free Lewis yang bersifat basa dan elektron-elektron bebas dari molekul zat warna merupakan mekanisme adsorpsi utama pada proses adsorpsi dengan menggunakan karbon aktif yang telah dimodifikasi. Kemampuan adsorpsi karbon aktif terhadap zat warna yang bersifat asam menurun dengan tingkatan karbon aktif tidak dimodifikasi > modifikasi 100 oC > modifikasi pada 100 oC > modifikasi pada 150 oC.Kata kunci: Adsorpsi, karbon aktif, sifat asam permukaan, ukuran pori

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