The Treatment of Industrial Effluents for the Discharge of Textile Dyes Using by Techniques and Adsorbents

Rahman, Fazlur

doi:10.4172/2165-8064.1000242

Cited by 3 publications

(2 citation statements)

References 49 publications

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“…Methods that have been developed for costeffective dye removal include chemical oxidation, irradiation, coagulation-flocculation and precipitation, adsorption, combination of anaerobic and aerobic processes, membrane technologies, and ion exchange processes (Weber and Adams 1995;Wang et al, 2008;Parvin 2015;Zewail and Yousef 2015). Adsorption has been reported to be promising due to its efficiency, low cost and reusability of the sorbents (Ali et al, 2016;Khan et al, 2014a;Khan et al, 2014b;Khan et al, 2018;Rahman 2016). However, as promising as these adsorbents are, many suffer from the limitations of non-selectivity and attrition.…”

Section: Introductionmentioning

confidence: 99%

Adsorption of malachite green onto Styrene-Methacrylate based molecularly imprinted polymer

Awokoya¹,

Oninla²,

Babalola³

et al. 2020

Ife Journal of Science

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The adsorption of malachite green (MG) from aqueous medium by non-imprinted and molecularly imprinted styrene/methacrylate polymers was studied. The synthesized materials were characterized by powder X-ray diffraction, Fourier transform infra-red spectroscopy, scanning electron microscopy, and energy dispersive Xray spectroscopy. The effects of initial dye concentration, contact time and temperature on the adsorption-1 capacity for malachite green were investigated and found to be about 200 g kg for the imprinted polymer and 44-1 g kg for the non-imprinted polymer. The X-ray diffraction peaks at 2θ = 18°, 30° and 42° indicate the crystalline nature of the polymers. Uptake of malachite green increased with rise in contact time and concentration, for both polymers, while decrease in uptake was observed with rise in temperature. The kinetics of the adsorption 2 of the dye on the imprinted polymer followed the pseudo-second order (R = 0.97), while that of the non-2 imprinted polymer followed the pseudo-first order (R = 0.87). Equilibrium study showed that the Freundlich isotherm better describes the adsorption of the dye on both polymers, indicating a multilayer adsorption. The values of ΔG° indicate the spontaneity and non-spontaneity of the dye removal by the imprinted and nonimprinted polymers respectively. The negative ΔH° and ΔS° for the imprinted polymer signify that the process is exothermic and occurred with decrease in the degree of randomness. Thus, the high quantity of MG adsorbed onto the imprinted polymer indicates the high potential of the use of the imprinting technology in the removal of toxic waste from water.

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Section: Introductionmentioning

confidence: 99%

Adsorption of malachite green onto Styrene-Methacrylate based molecularly imprinted polymer

Awokoya¹,

Oninla²,

Babalola³

et al. 2020

Ife Journal of Science

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“…These dyes are toxic and, in most cases, are difficult to be biodegraded and resistant to physic-chemical treatment. Presence of little amount of dyes in water (less than 1 ppm for some dyes) is highly visible and undesirable (Rahman, 2016). Therefore, it is necessary to eliminate dyes from wastewater before it is discharged into the natural water bodies.…”

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confidence: 99%

TiO2 nanoparticles coated forward osmosis membranes for treatment of industrial textile effluent

Sint

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Textile wastewater occur as demanding water bodies to be treated by membrane separation due to the complex composition and presence of reactive constituents such as heavy metals and salts as well as nutrients, e.g. nitrogen, sulphate and phosphate. Numerous combination of osmosis process with photocatalysts has been experimentally conceived for the water and wastewater treatment and reuse of textile wastewater. The present work was devoted to study the operating feasibility using photocatalyst as TiO2�nano-particles were coated onto two commercially available FO membranes, a cellulose triacetate (CTA) membrane and an aquaporin (AqP) membrane through a specially designed 3-(trimethoxysilyl) propyl methacrylatepolymethyl methacrylatebromide (MEMOPMMABr) monomer chain as an alternative forward osmosis treatment method of conventionally treated wastewater discharged from textile plants. Effects of dye concentration, dissolved ions and TOC and reactive dye removing were studied. An initial water flux (Jw) of 18.38�L�m?2�h?1�with a dye rejection of 99.9% has been demonstrated by using 1�M NaCl as the draw solution and synthetic textile wastewater containing reactive textile dyes (black, blue and red) 200, 400, 600, 800 ppm, inorganic salts, varying amounts of PVA and HCOH as interferences in the feed under the FO mode. The water flux of both membranes and the performance of the CTA membrane were greatly enhanced after surface modification. The experiments also show that CTA membrane gives higher water flux than aquaporin membrane for forward osmosis operation of synthetic textile wastewater. The increase in water flux for aquaporin�is about 5.13% than CTA.

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Determining the impacts of environmental parameters on model microbial community dynamics isolated from Rustumihia WWTP/Iraq

Noor

Ralebitso-Senior²,

Sarker

et al. 2020

IOP Conf. Ser.: Mater. Sci. Eng.

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The composition of Rustumihia microbial community and their diversity with o-xylene-contaminants were investigated by applying molecular techniques, Polymerase chain reaction and denaturing gradient gel electrophoresis (PCR and DGGE) via investigating 16S rRNA gene fragments and understand the interrelationships between microbial community composition and structure for established microbial model community isolated from Rustumihia WWTP. To this end, that the established consortium could be used to assess the microbial response as defined by diversity and richness shifts, which are linked to changes in growth conditions. In this research paper a synthetic consortium was created by isolating indigenous microbial community members from the Rustumihia WWTP and subjecting consortium to different pH of (6.5, 7.0 and 7.5) and o-xylene concentrations of (0.5, 5 and 50 Mm) and temperatures (25°C, 35°C, 45°C and 55°C). The results of this study indicated that the high o-xylene concentration of 50 mM was tolerated and degraded effectively at 35°C and 55°C, and pH 6.5 (P < 0.001). Bacterial richness and diversity were recorded according to the Hill parameters of 0 D, 1 D and 2 D under each of the growth conditions, and then linked to the o-xylene degradation efficiency. At 35°C and pH 6.5, the consortium achieved high degradation percentage for each of 0.5, 5 and 50 mM of o-xylene with values 73.1%, 94.8% and 63.08%, respectively. The current study is the first of its kind in Iraq. It investigates the enrichment, isolation, and identification of a microbial community from the Rustumihia WWTP and determines the efficiency of the isolates to tolerate and degrade o-xylene, highlighting their sole source of hydrocarbon. This research underscores the usefulness of molecular techniques for both diversity and richness to understand the ecological impact of o-xylene as a contaminant and to identify potential molecular techniques for detection of gene that is responsible for o-xylene degradation.

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The Treatment of Industrial Effluents for the Discharge of Textile Dyes Using by Techniques and Adsorbents

Cited by 3 publications

References 49 publications

Adsorption of malachite green onto Styrene-Methacrylate based molecularly imprinted polymer

Adsorption of malachite green onto Styrene-Methacrylate based molecularly imprinted polymer

TiO2 nanoparticles coated forward osmosis membranes for treatment of industrial textile effluent

Determining the impacts of environmental parameters on model microbial community dynamics isolated from Rustumihia WWTP/Iraq

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