Scholarlink

<p>India is prioritizing transition to renewable energy sources aiming to address the impacts of energy crisis and climate change. To support India’s 2030 renewable energy and land degradation neutrality targets, this study evaluates <i>Calotropis procera</i>, a resilient hyperaccumulator, as a sustainable biofuel source cultivated on heavy metal (HM) contaminated abandoned waste sites. The plant parts of <i>C. procera</i> were systematically processed to obtain crude oil, followed by transesterification to convert the extracted oil into fatty acid methyl esters (FAME) for biofuel production. Remarkably, the plant outperformed typical growth benchmarks under metal stress, yielding 54.20 ± 1.9&#xa0;g of seeds per plant and path-breaking crude oil content of 32.75%, surpassing values reported in normal Indian farmlands. Transesterification achieved an 87.2% conversion efficiency, producing 32.1% Fatty Acid Methyl Esters (FAME). The resulting biodiesel exhibited oxidative stability with high concentration of methyl oleate (~ 45%) and other esters. Pre- and post-oil extraction yielded gross calorific value (GCV) per plant as 22.35 ± 0.29 MJkg<sup>-1&#xa0;</sup>and 4.35 ± 0.28&#xa0;MJkg<sup>-1</sup> respectively suggesting this biofuel to be as effective as other popular non-edible oils currently used in the industry. Furthermore, beyond fuel the study revealed circular economy and a zero-waste approach, as the leftover seed residuals post-extraction generated a GCV of 5.79 ± 0.24&#xa0;MJkg<sup>-1&#xa0;</sup>and can be used for energy. With a large harvest potential of 2276.11 kgha<sup>-1</sup>, <i>C. procera</i> proves to have potential to turn metal-contaminated wasteland into productive green energy hubs. This innovation offers a dual solution: cleaning up India’s polluted landscapes while providing a sustainable way to fight the energy crisis.</p> Graphical Abstract <p></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

Turning Wastelands into Bioenergy Hubs: Exploiting the Hyperaccumulator Calotropis procera for High-Yield Biodiesel and Zero-Waste Valorization

  • 期刊论文

  • 发表日期：

    2026年6月3日

查看全文
  • Naveen Kumar,
  • Sanjay Mehra,
  • Virendra Kumar Mishra,
  • Kavita Shah

摘要

India is prioritizing transition to renewable energy sources aiming to address the impacts of energy crisis and climate change. To support India’s 2030 renewable energy and land degradation neutrality targets, this study evaluates Calotropis procera, a resilient hyperaccumulator, as a sustainable biofuel source cultivated on heavy metal (HM) contaminated abandoned waste sites. The plant parts of C. procera were systematically processed to obtain crude oil, followed by transesterification to convert the extracted oil into fatty acid methyl esters (FAME) for biofuel production. Remarkably, the plant outperformed typical growth benchmarks under metal stress, yielding 54.20 ± 1.9 g of seeds per plant and path-breaking crude oil content of 32.75%, surpassing values reported in normal Indian farmlands. Transesterification achieved an 87.2% conversion efficiency, producing 32.1% Fatty Acid Methyl Esters (FAME). The resulting biodiesel exhibited oxidative stability with high concentration of methyl oleate (~ 45%) and other esters. Pre- and post-oil extraction yielded gross calorific value (GCV) per plant as 22.35 ± 0.29 MJkg-1 and 4.35 ± 0.28 MJkg-1 respectively suggesting this biofuel to be as effective as other popular non-edible oils currently used in the industry. Furthermore, beyond fuel the study revealed circular economy and a zero-waste approach, as the leftover seed residuals post-extraction generated a GCV of 5.79 ± 0.24 MJkg-1 and can be used for energy. With a large harvest potential of 2276.11 kgha-1, C. procera proves to have potential to turn metal-contaminated wasteland into productive green energy hubs. This innovation offers a dual solution: cleaning up India’s polluted landscapes while providing a sustainable way to fight the energy crisis.

Graphical Abstract