Scholarlink

<p>Discharges of untreated wastewater from textile industries are increasing day by day. Dyes are the pigments used to impart colour in the goods through various processes including dyeing, printing etc. Wastewater of textile industries may contain several types of toxicants such as organic pollutants, micronutrients, heavy metals, surfactants, and pathogenic microbes etc. Discharge of untreated textile wastewater in the environment (especially in water and soil) can cause major problems to the biodiversity (including human beings). Adsorption is observed as an effective practice to eliminate dyes from wastewater. However, adsorbents used should be less costly and easy to develop/procure. If local raw materials can be used to develop adsorbents that will be an extra advantage. In the context of these parameters, biochar adsorbents are among the best choice of the researchers throughout the world. Biochar adsorbents can be developed by using the processes like pyrolysis, gasification and hydrothermal. However, rapid pyrolysis (~ 12%) and gasification (~ 10%) relatively produce less amount of biochar than delayed pyrolysis method (~ 30%). During writing this review, it has been observed that various types of locally available raw materials have been utilized to synthesize biochar adsorbents for removal of dyes from water such as coffee husk based activated carbon, oak wood biochar, water hyacinth, pineapple leaves, crop residues etc. Further, the adsorption capacities of the biochar adsorbents were excellent in some cases like calcium rich biochar derived from crab shells adsorbed ~ 12,502&#xa0;mg/g of cationic malachite green dye from water. Further, soybean dreg was adsorbed ~ 1273&#xa0;mg/g of dye from water. Many biochar adsorbents were able to remove dyes from water ranged from 300 to 500&#xa0;mg/g as adsorption capacities. In this review paper, almost every aspect of dye removal using low-cost biochar adsorbents have been discussed like sources of dye in water, biochar adsorbents &amp; their preparatory methods, mechanism etc.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

An overview on future aspects of low-cost biochar adsorbents for dyes removal from water

  • 期刊论文

  • 发表日期：

    2026年4月29日

查看全文
  • Arun Lal Srivastav,
  • Lata Rani,
  • Prakriti Sharda,
  • Sughosh Madhav,
  • Prateek Sharma,
  • Daya Nidhi Urmaliya

摘要

Discharges of untreated wastewater from textile industries are increasing day by day. Dyes are the pigments used to impart colour in the goods through various processes including dyeing, printing etc. Wastewater of textile industries may contain several types of toxicants such as organic pollutants, micronutrients, heavy metals, surfactants, and pathogenic microbes etc. Discharge of untreated textile wastewater in the environment (especially in water and soil) can cause major problems to the biodiversity (including human beings). Adsorption is observed as an effective practice to eliminate dyes from wastewater. However, adsorbents used should be less costly and easy to develop/procure. If local raw materials can be used to develop adsorbents that will be an extra advantage. In the context of these parameters, biochar adsorbents are among the best choice of the researchers throughout the world. Biochar adsorbents can be developed by using the processes like pyrolysis, gasification and hydrothermal. However, rapid pyrolysis (~ 12%) and gasification (~ 10%) relatively produce less amount of biochar than delayed pyrolysis method (~ 30%). During writing this review, it has been observed that various types of locally available raw materials have been utilized to synthesize biochar adsorbents for removal of dyes from water such as coffee husk based activated carbon, oak wood biochar, water hyacinth, pineapple leaves, crop residues etc. Further, the adsorption capacities of the biochar adsorbents were excellent in some cases like calcium rich biochar derived from crab shells adsorbed ~ 12,502 mg/g of cationic malachite green dye from water. Further, soybean dreg was adsorbed ~ 1273 mg/g of dye from water. Many biochar adsorbents were able to remove dyes from water ranged from 300 to 500 mg/g as adsorption capacities. In this review paper, almost every aspect of dye removal using low-cost biochar adsorbents have been discussed like sources of dye in water, biochar adsorbents & their preparatory methods, mechanism etc.