Abstract
Renewable energy from thermal valorization plays a key part in today’s energy from natural cellulosic textiles that are resourceful biomass and safe from toxicity at high temperature treatments. The situation is opposite, when technical textiles are treated with synthetic chemical finishes adding functionality as anti-bacterial, water repellent or flame retardant, etc. Incineration of flame retardant textile results in possible unfavorable gases, toxic fumes and contaminated ash. Other thermal valorization techniques like gasification would assist in avoiding the formation of additional toxic hazards. Herein, gasification of flame retardant textile is carried out the likelihood to get quality gas composition. For comparative analysis, flame retardant textiles, after their flame retardant ability being revoked, are also gasified. The output gas components suggested that gasification can be a useful thermal valorization approach for flame retardant textiles and relevantly improved gas composition was seen in textiles with their flame retardant substrate/species being removed.
Highlights
Renewable energy from thermal valorization plays a key part in today’s energy outlook and there is not a biomass replaceable to cotton
While after the removal of the flame retardant substrate, the moisture content increased compared to the flame retardant cotton
Utilization of flame retardants in the textile industry to suppress rapid combustion is increasing each year. Their waste treatments are hindered by leachate if landfilled and less energetic yields due to incomplete combustion when incinerated
Summary
Renewable energy from thermal valorization plays a key part in today’s energy outlook and there is not a biomass replaceable to cotton. Thousands of tons of biomass residues produced from cotton industry with a thermal energy potential from combustion were estimated around 4000 TJ annually [1]. With immense attention to cotton crops waste utilization, cotton products with synthetic functionalities like technical textiles are ignored in perspective of the thermal valorization panorama. Flame retardant textiles are among technical textiles, used to withstand indoor safety regulations, consumption of which is increased recently in the textile industry [4,5,6]. Flame retardants incorporated to textiles can be organic or inorganic in nature [7,8], eventually make their way to landfills and incinerators. Landfill being least preferable [9] and due to leachate of flame retardant chemicals [10], incineration is used commonly. A part from the environmental concerns raised related to flame retardants from last three decades, originated from the potential release of toxin polybrominated dioxins, during the incineration of polybrominated diphenyls and diphenyl ethers [14,15], sustainable waste treatment of flame retardants is yet a challenge
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