Optimization and kinetic studies on treatment of textile dye wastewater using Pleurotus floridanus

Textile wastewater is contaminated by reactive dye causing unattractive levels of wastewater color, high pH and high salt content when discharged into public water systems. Decolorization of textile wastewater by plant, phytoremediation, is an alternative, sustainable method which is suitable for long term operation. Narrow-leaved cattails are one species of wetland plant with efficiency for decolorizing and remediating textile wastewater. In addition, chemical oxygen demand (COD) can be lowered and dye residue can be removed. The plant also showed a good salt tolerance even after being exposed to a salt solution for 15 days. The narrow-leaved cattails were set up in a constructed wetland model with a vertical flow system operating from bottom to top for synthetic reactive dye wastewater (SRDW) removal. Narrow-leaved cattails could achieve the removal of SRDW at approximately 0.8 gSRDW m−2 day−1. Decolorization of SRDW by this plant was approximately 60%. The advantage of this method is that it is suitable for textile wastewater management and improvement of wetland. These plants could lower COD, remove dye, sodium and total dissolved solids (TDS) whereas other biological and chemical methods could not remove TDS and dye in the same time. These results suggested that the spongy cell structure of this plant has the ability to absorb large amounts of water and nutrients. Physico-chemical analysis revealed increasing amounts of sulfur, silicon, iron and calcium in the plant leafs and roots after exposure to wastewater. Proteins or amide groups in the plant might help in textile dye removal. Regarding decolorization, this plant accumulates dye in the intercellular space and still grows in this SRDW condition. Hence, it can be noted here that narrow-leaved cattails are efficient for textile dye wastewater treatment.

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Synthesis and characterization of composite flocculant PAFS-CPAM for the treatment of textile dye wastewater

Journal of Applied Polymer Science ◽

10.1002/app.40062 ◽

2013 ◽

Vol 131 (7) ◽

pp. n/a-n/a ◽

Cited By ~ 6

Author(s):

Yongjun Sun ◽

Huaili Zheng ◽

Mingzhuo Tan ◽

Yili Wang ◽

Xiaomin Tang ◽

...

Keyword(s):

Synthesis And Characterization ◽

Textile Dye ◽

Dye Wastewater

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Removal of Methylene Blue Dye by Using Eggshell Powder

Jurnal Teknologi ◽

10.11113/jt.v65.1648 ◽

2013 ◽

Vol 65 (1) ◽

Author(s):

Norzita Ngadi ◽

Chin Chiek Ee ◽

Nor Aida Yusoff

Keyword(s):

Methylene Blue ◽

Textile Industry ◽

Low Cost ◽

Kinetic Studies ◽

Operating Conditions ◽

Blue Dye ◽

Dye Wastewater ◽

Order Model ◽

Aquatic Life ◽

Pseudo Second Order

Dyes contain carcinogenic materials which can cause serious hazards to aquatic life and the users of water. Textile industry is the main source of dye wastewater which results in environmental pollution. Many studies have been conducted to investigate the use of low cost adsorbent as an alternative technique for the adsorption of dye. The objective of this study is to determine the potential of eggshell powder as an adsorbent for methylene blue removal and find out the best operating conditions for the color adsorption at laboratory scale. The adsorption of cationic methylene blue from aqueous solution onto the eggshell powder was carried out by varying the operating parameters which were contact time, pH, dosage of eggshell powder and temperature in order to study their effect in adsorption capacity of eggshell powder. The results obtained showed that the best operating condition for removal of methylene blue was at pH 10 (78.98 %) and temperature 50°C (47.37 %) by using 2 g of eggshell powder (57.03 %) with 30 minutes equilibrium time (41.36 %). The kinetic studies indicated that pseudo-second-order model best described the adsorption process.

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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.

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