Scholarlink

<p>Oil-based drilling cuttings residue (OBDCR) and fly ash (FA) are hazardous industrial solid wastes whose safe and cost-effective disposal remains an environmental challenge. This study addresses this issue by developing a novel approach to transform OBDCR and FA into value-added foamed ceramsite, thereby contributing to sustainable waste management and resource recovery. The primary aim was to optimize the synthesis parameters to produce a lightweight, high-strength, and environmentally stable material. Using OBDCR and FA as the main raw materials and borax as a fluxing agent, a univariate experimental design was employed to systematically investigate the effects of calcination temperature, duration, and foaming agent content on the material’s properties. The ceramsite was characterized in terms of porosity, water absorption, compressive strength, acid/alkali resistance, and heavy metal leaching potential. Results demonstrated that under optimal conditions (850&#xa0;°C, 1&#xa0;h, 6% foaming agent, and OBDCR:FA:Borax = 35:35:30), the foamed ceramsite exhibited superior performance: 65% porosity, 14.9% water absorption, 4.02&#xa0;MPa compressive strength, and acid/alkali resistance exceeding 99%. Critically, the leaching concentrations of heavy metals were significantly below the limits of Chinese national standard GB/T 5085.3, and multiple ecological risk assessment methods confirmed negligible environmental hazards. Pilot-scale experiments further validated the feasibility and economic potential of this approach. This work presents a novel, efficient, and low-risk pathway for the utilization of hazardous solid wastes, offering a practical inorganic material solution for industrial waste recycling and environmental protection.</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

Foamed ceramsite derived from oil-based drilling cutting residue and fly ash: basic properties, risk assessment, and application

  • 期刊论文

  • 发表日期：

    2026年3月16日

查看全文
  • Deming Xiong,
  • Zheng Sun

摘要

Oil-based drilling cuttings residue (OBDCR) and fly ash (FA) are hazardous industrial solid wastes whose safe and cost-effective disposal remains an environmental challenge. This study addresses this issue by developing a novel approach to transform OBDCR and FA into value-added foamed ceramsite, thereby contributing to sustainable waste management and resource recovery. The primary aim was to optimize the synthesis parameters to produce a lightweight, high-strength, and environmentally stable material. Using OBDCR and FA as the main raw materials and borax as a fluxing agent, a univariate experimental design was employed to systematically investigate the effects of calcination temperature, duration, and foaming agent content on the material’s properties. The ceramsite was characterized in terms of porosity, water absorption, compressive strength, acid/alkali resistance, and heavy metal leaching potential. Results demonstrated that under optimal conditions (850 °C, 1 h, 6% foaming agent, and OBDCR:FA:Borax = 35:35:30), the foamed ceramsite exhibited superior performance: 65% porosity, 14.9% water absorption, 4.02 MPa compressive strength, and acid/alkali resistance exceeding 99%. Critically, the leaching concentrations of heavy metals were significantly below the limits of Chinese national standard GB/T 5085.3, and multiple ecological risk assessment methods confirmed negligible environmental hazards. Pilot-scale experiments further validated the feasibility and economic potential of this approach. This work presents a novel, efficient, and low-risk pathway for the utilization of hazardous solid wastes, offering a practical inorganic material solution for industrial waste recycling and environmental protection.