Competitive removal of textile dyes from solution by pine bark-compost in batch and fixed bed column experiments

• DOI: 10.1016/j.eti.2022.102421
• Publication Date: 2022-02-16T06:48:17Z
• Authors: Khaled Al-Zawahreh; María Teresa Barral; Yahya Al-Degs; Remigio Paradelo
• Keywords: Pulp and paper industry; Health, Toxicology and Mutagenesis; Organic chemistry; Dye Removal; 01 natural sciences; Industrial and Manufacturing Engineering; Bed depth service time model; Engineering; Column adsorber; Chromium Bioremediation and Health Impacts; Waste management; Biology; Water Science and Technology; 0105 earth and related environmental sciences; Chromatography; Ecology; Textile wastewater; Pine bark compost; Adsorption of Water Contaminants; Bark (sound); Compost; Elution; Chemistry; Competitive adsorption; FOS: Biological sciences; Environmental Science; Physical Sciences; Global E-Waste Recycling and Management; Thomas model; Adsorption

Compost from pine bark has been previously suggested as an effective low-cost biosorbent for different classes of textile dyes, although the existing studies have performed in non-competitive batch conditions, so effect competition or adsorption continuous-flow conditions not assessed. In this work, removal Basic Violet 10 (BV10) and Direct Blue 151 (DB151) by compost single bi-solute mixtures studied fixed-bed column experiments. Adsorption capacity was three times higher BV10 than DB151 where reduced uptake both with factors 0.63 0.82 BV10. Dye lower tests, 112.6 34.7 mg g−1 DB151, respectively, versus 127.1 42.1 conditions. The presence dyes solution also their affinities respect to saturation capacities 71.6 16.8 DB151. between columns 0.76 0.59 effectively regenerated using ethanol, thus enabling reuse practical application dye removal. concentration eluted ethanol influent concentration, what would give value pre-concentration dyes.