Dyeing of Wool with Dalbergia sisso as an Eco-friendly Substituent of Conventional Hazardous Synthetic Dye

Abstract Fly ash was investigated for its ability to adsorb dyes from aqueous solutions. Batch pH, kinetic and isotherm studies were performed on a laboratory scale with synthetic dye solutions made up of four different commercial grade dyes. Fly ash samples with differing compositions and particle sizes were employed to understand the effect of fly ash composition and particle size on their dye removal capacity. The first-order rate equation by Lagergren was tested on the kinetic data, and isotherm data was analyzed for possible agreement with the Langmuir and Freundlich adsorption isotherm equations. The removal capacity of fly ash for the different dyes was compared with that of granular activated carbon under identical conditions. Results showed that fly ash exhibited reasonably good dye removals for Basic Blue 9, Acid Blue 29 and Acid Red 91, while the removals by fly ash exceeded that of granular activated carbon for Disperse Red 1. Lime content in fly ash seemed to influence dye adsorption to a significant degree — better adsorption was observed at lower particle sizes because of the increased external surface area available for adsorption. Acid Blue 29 adsorption by fly ash provided the best fit for the Lagergren first-order plot. Because high pH and heavy metals (leached from fly ash) in the treated wastewater may exceed the limits set in municipal sewer-use bylaws, engineering and economic feasibility assessment should include these aspects when considering fly ash for colour removal.

Download Full-text

Short Communication: The higher laccase enzyme producer, Cerrena sp. BMd.TA.1, isolated from Gunung Rinjani National Park, West Nusa Tenggara, Indonesia

Biodiversitas Journal of Biological Diversity ◽

10.13057/biodiv/d210853 ◽

2020 ◽

Vol 21 (8) ◽

Author(s):

SARAH ASIH FAULINA ◽

ASEP HIDAYAT ◽

SYAMSUL FALAH ◽

Apri Heri Iswanto

Keyword(s):

Manganese Peroxidase ◽

National Park ◽

Short Communication ◽

Industrial Effluent ◽

Fungal Enzymes ◽

Fungal Laccase ◽

Synthetic Dye ◽

Environmental Friendly ◽

Laccase Enzyme ◽

High Level

Abstract. Faulina SA, Irfani M, Falah S, Hidayat A, Iswanto AH. 2020. Short Communication: The higher laccase enzyme producer, Cerrena sp. BMd. TA.1, isolated from Gunung Rinjani National Park, West Nusa Tenggara, Indonesia. Biodiversitas 21: 3837-3842. Lies in the Wallace line, Gunung Rinjani National Park (GRNP) offers unique biodiversity, fungi included. Fungal enzymes have been unceasingly searched and studied for various applications, particularly for biodegradation. Fungal laccase enzyme showed prospective environmental-friendly approach in treating industrial effluent, remazol brilliant blue R (RBBR) which is used as a synthetic dye. This study aimed to explore the laccase-producing fungi from the GNRP, as well as investigate their ability in decolorizing RBBR. The study discovered that the most prospective fungi isolate, molecularly identified as Cerrena sp. BMd.TA.1, produced a high level of laccase (> 2300 U mL-1) and manganese peroxidase (MnP, 300 U mL-1). In the application of this isolate, the laccase showed as predominant enzyme in RBBR decolorization process and the RBBR could be decolorized more than 80% at 24 h reaction. It suggested that Cerrena sp BMd.TA.1 isolate is highly potential as laccase enzyme producer and may be considered for further investigations in its applications for biodegradation, especially of dyes effluent.

Download Full-text

Screening the six plant species for phytoremediation of synthetic textile dye waste water

10.21203/rs.3.rs-61075/v1 ◽

2020 ◽

Author(s):

Navjeet Kaur ◽

Jyotsna Kaushal ◽

Pooja Mahajan ◽

Arun Lal Srivas

Keyword(s):

Plant Species ◽

Synthetic Wastewater ◽

Contaminated Sites ◽

Textile Dye ◽

Dye Wastewater ◽

Active Growth ◽

Synthetic Dye ◽

Hibiscus Rosa Sinensis ◽

Chrysanthemum Indicum ◽

Tagetes Erecta L

Abstract Most of the dyes are carcinogenic and mutagenic in nature. Plants are potential candidates to remediate textile dye wastewater from contaminated sites. The present study aimed toscreen potential plant species for removal of synthetic dye solution of triarylmethane dye Methylene Blue (MB) and diazo dye Congo Red (CR). Six plant species were screened for their phytoremediation ability for the removal of dyes present in synthetic wastewater. Six plants selected for screening areTrachyspermum ammi L. (T. ammi), Tagetes erecta L. (T. erecta), Hibiscus rosa-sinensis L. (H. rosa- sinensis), Chrysanthemum indicum L. (C. indicum), Bryophyllum fedtschenkoi (B. fedtschenkoi), Catharanthus roseus L. (C. roseus). The phytotreatment of dyes was done up to 40 hfortwo different concentrations of dyes 10 mg L− 1 and 20 mg L− 1. Among these plants, the maximum decolouration was obtained from T. ammi plant followed by B. fedtschenkoi plant. Both of these plants showed active growth even after the phytoremediation process. T. ammi decolourised the MB dye 99% (10 mg L− 1) and 86% (20 mg L− 1) while the decolourisation of the CR dye solution was up to 95% (10 mg L− 1) and 84% (20 mg L− 1).T. ammi found to have maximum potential among screened plants for the removal of MB and CR dye from synthetic dye solution and can be used for decolouration of synthetic dye wastewater.

Download Full-text

Optical memory using localized photoinduced anisotropy in a synthetic dye-polymer

10.1117/12.45940 ◽

1991 ◽

Author(s):

Chai-Pei Kuo

Keyword(s):

Optical Memory ◽

Synthetic Dye ◽

Photoinduced Anisotropy

Download Full-text

Adsorption of Textile Dye by Activated Carbon Made from Rice Straw and Oil Palm Midrib

Aceh International Journal of Science and Technology ◽

10.13170/aijst.6.1.5502 ◽

2017 ◽

Vol 6 (1) ◽

pp. 1 ◽

Cited By ~ 5

Author(s):

Mochamad Lutfi Firdaus ◽

Noli Krisnanto ◽

Wiwit Alwi ◽

Ronald Muhammad ◽

Muhamad Allan Serunting

Keyword(s):

Activated Carbon ◽

Rice Straw ◽

Adsorption Isotherms ◽

Oil Palm ◽

Dye Adsorption ◽

Textile Dye ◽

Synthetic Dyes ◽

Potential Hazard ◽

Synthetic Dye ◽

Langmuir And Freundlich Models

Synthetic dye wastewater from textile industries is characterized by strong color, high temperature, variable pH and high chemical oxygen demand (COD). The strong color of wastewater affects aesthetic and water transparency of water bodies. The metabolites could be toxic to aquatic biota and posing a potential hazard to human health. Eventually, it will cause severe environmental problems. One of method that has advantages in term of simplicity to remove synthetic dyes is adsorption. Environmentally benign and low-cost materials to make adsorbent are biomass-based materials. Two different biomaterial wastes of rice straw and oil palm midrib were used in this study to develop activated carbon adsorbents. These adsorbents were applied for the removal of Naphtol AS-G dye in aqueous solution. The effects of solution pH, adsorbents masses and contact time on dye adsorption were evaluated based on batch experiments. Removal of dye can be achieved within 60 minutes at a wide pH range starting from 4 to 8. At lower pH, synthetic dye removal was decreasing probably due to protonation of adsorbent’s active sites. The adsorption isotherms based on Langmuir and Freundlich models were analyzed. The isotherms analysis indicated that the adsorption by rice straw and oil palm can be represented by Langmuir and Freundlich isotherm model, respectively. Adsorption isotherms of Naphtol AS-G onto activated carbon are favorable with high adsorption capacity for both biomaterials. The mechanisms of color removal by activated carbon involved chemical and physical adsorption, in accordance with both the Langmuir and Freundlich models. The calculated maximum dye adsorption capacities onto rice straw and oil palm midrib activated carbon were 55.86 and 69.44 mg/g, respectively. Adsorption using biomass-based activated carbon offers a good technique for textile wastewater treatment as it could remove up to 95% of the color intensity besides reducing other pollutants such as COD, nitrate and phosphate.

Download Full-text