Conversion of Syagrus romanzoffiana into High-Efficiency Biosorbent for dye Removal from Synthetic and Real Textile Effluent

Tochetto, Gabriel André; Silva, Tainá C. da; Bampi, Josiane; Moreira, Regina de Fátima Peralta Muniz; Luz, Cleuzir da; Pasquali, Gean D. L.; Dervanoski, Adriana

doi:10.1007/s11270-022-05737-z

Cited by 7 publications

(1 citation statement)

References 54 publications

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“…Textile production involves a sequence of different chemical processes, mainly aimed at removing impurities and coloring [13,14]. Chemical processing, widely used in the textile industry, generates huge waste due to the desizing of fabrics, bleaching chemicals, and synthetic dyes, which contributes significantly to environmental pollution [15,16]. In recent decades, the increase in textile consumption has brought intense pressure on the manufacturing and processing sectors to develop efficient, low-cost, and environmentally sustainable technologies to meet the needs of the population through the use of environmentally friendly and hygienic textile products [17,18].…”

Section: Introductionmentioning

confidence: 99%

Enzymatic Treatment of Cotton Fabric for Desizing

Rafikov,

Fayzullaeva,

Shonakhunov

et al. 2023

J. Chem. Eng. Res. Updates.

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The possibility of softening the conditions of biochemical treatment to remove the sizing agent from the surface of the fibers in the preparation of cotton fabric for dyeing has been studied. The efficiency of the α-amylase enzyme was evaluated by the amount of sugars reduced in the modifying solution, as well as by the capillarity of the samples of the treated fabrics. The enzyme used is active towards starch starting from a low concentration (0.02 g/l) and low temperature (32°C). The effect of enzyme concentration from 0.02 to 6.0 g/l, solution pH from 4.5 to 8.5, temperature from 32 to 60°C on the amount of sugars in the solution after enzymatic treatment, and fabric capillarity was determined. Almost complete removal of sizing from the surface of fibers of the original fabric was achieved under moderate and mild processing conditions: α-amylase concentration 1.0÷5.0 g/l, pH=6.0÷7.0, temperature 50-55°C. Based on the dependence of the logarithm of the reaction rate on the reciprocal temperature, the activation energy of the desizing reaction was calculated, which turned out to be equal to E = 17.5 kJ/mol. The low activation energy shows that the desizing process is carried out under energetically favorable conditions with moderate heating. The surface morphology of treated and untreated samples of cotton fabric was studied by scanning electron microscopy. The removal of the adhesive substance from the surface of the fibers, the separation of individual fibers, and the smoothing of the fabric surface after treatment with an amylase solution were recorded.

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