Water, Air, & Soil Pollution ( IF 3.8 ) Pub Date : 2021-08-25 , DOI: 10.1007/s11270-021-05306-w Wiviane Kássia Oliveira Correia da Costa 1 , Nattany Tayany Gomes de Paula 1 , Ana Paula Silveira Paim 1 , Sávia Gavazza 2 , Marta Maria Menezes Bezerra Duarte 3 , Sueny Kêlia Barbosa Freitas 4
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Textile wastewaters (TW) contain contaminants such as organic matter, dyes, sulfate, and many salts. Many methods have been used to remove these pollutants and to reduce the environmental impact associated with their release into water bodies. In the present study, physically activated carbon made of sugar cane bagasse was used as an adsorbent to remove color and chemical oxygen demand (COD) from textile effluent. The experiments were carried out with a real effluent from a textile jeans laundry. The effect of the variables, such as adsorbent amount, pH, contact time, temperature, and particle size of the adsorbent, was tested. The most efficient results were obtained for the adsorbent mass of 0.25 g, pH 6.0, contact time of 60 min, and adsorbent size smaller than 0.42 mm. The adsorbent performed well for color removal of textile effluent, removing up to 93% and 55% of color and COD, respectively. The Brunauer–Emmett–Teller (BET) surface area and total pore volume were 188.2 m2 g−1 and 0.13 cm3 g−1, respectively, and average sizes of pore diameter of 2.7 nm and 3.6 nm. This indicates the ability of agro-industrial waste for application in the process of textile wastewater treatment.
Graphical abstract
中文翻译：
甘蔗渣制备活性炭及去除真纺织废水中的色素和有机物
纺织废水 (TW) 含有污染物，如有机物、染料、硫酸盐和许多盐类。许多方法已被用于去除这些污染物并减少与它们释放到水体中相关的环境影响。在本研究中，由甘蔗渣制成的物理活性炭用作吸附剂，以去除纺织废水中的颜色和化学需氧量 (COD)。实验是用来自纺织牛仔裤洗衣房的真实污水进行的。测试了变量的影响，例如吸附剂的量、pH、接触时间、温度和吸附剂的粒径。当吸附剂质量为 0.25 克、pH 值为 6.0、接触时间为 60 分钟且吸附剂尺寸小于 0.42 毫米时，获得了最有效的结果。该吸附剂对纺织废水的脱色效果良好，分别去除高达 93% 和 55% 的颜色和 COD。Brunauer-Emmett-Teller (BET) 表面积和总孔体积为 188.2 m分别为2 g -1和0.13 cm 3 g -1，平均孔径为2.7 nm 和3.6 nm。这表明农工业废物在纺织废水处理过程中的应用能力。
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