Biosurfactants from Urban Wastes As Auxiliaries for Textile Dyeing

Abstract

To promote biobased products for the industry, six biosurfactants isolated from green and food urban residues aged under aerobic digestion for 0−60 days were investigated for their potential to perform as auxiliaries for dyeing cellulose acetate fabric with water-insoluble dyes. The experimental plan included investigation of the chemical nature, surface activity, and power to enhance dye solubility in water, as well as dyeing test performed under a variety of experimental conditions presenting a range of challenge levels. For comparison, the same investigation was performed on commercial synthetic surfactants. The investigated biosurfactants exhibited chemical composition and surface activity properties presumably related to their different biomass sources. However, no significant performance differences in textile dyeing were evident among the biosurfactants and between biosurfactants and synthetic surfactants. The results encourage product and process development for exploitation of biomass residues as a source of chemicals to recycle to the industry.

A Waste‐Derived Biosurfactant for the Preparation of Templated Silica Powders

“…[1] These substances act as promising chemical auxiliaries for major technological applications, for example, textile dyeing [2] and fabric washing, [3] where commercial synthetic surfactants are used.…”

“…The fact that BS110 was isolated from a biomass having a complex composition and subject to seasonal variation may raise concerns about the reproducibility of the BSs structure and thus of the properties of the templated materials derived from it. Despite this consideration, previous studies have shown that when the waste-derived biosurfactants were applied as active agents in detergent formulations [3] or as chemical auxiliaries in textile dyeing processes, [2] within certain limits, the chemical variability arising from their biological origin did not critically affect their performances. Nevertheless, to assess the variability of the BSs, the structural composition of BS110 was characterized in detail and compared to published BSs structures.…”

“…Nevertheless, to assess the variability of the BSs, the structural composition of BS110 was characterized in detail and compared to published BSs structures. [1][2][3] Results and Discussion…”

“…[1] Evaluation of the experimental data (see Experimental Section) allowed the determination of the functional group distribution, which are reported in Table 1 alongside the reported data for other bioorganic substances www.chemsuschem.org isolated from different waste sources. [1][2][3] It is observed that, like other waste-derived substances, for example, cHA L2-7, BS110 contains many organic moieties representing the main constituents of the bioorganic refuse matter shown in Scheme 1, which were not completely mineralized during the biodegradation processes. A graphical representation of the chemical structure of BS110 is shown in Scheme 1.…”

Isolation, Characterization, and Environmental Application of Bio-Based Materials as Auxiliaries in Photocatalytic Processes

“…The presence of both hydrophilic and hydrophobic functionalities forming the chemical structure of such BBS confers to these substances amphiphilic properties, as testified by the literature on analogous substrates [36][37][38]. As reported in our previous study [39], these BBS can be used in several industrial applications (as emulsifiers, foaming agents, in detergent formulations or as textiles auxiliaries, for the production of nanostructured materials, in animal husbandry, as fertilizers, or for the production of biofuels and bioplastics).…”