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<p>The impact of four distinct biomass types <i>Bidens</i> sp. (BB), <i>Neyraridia</i> sp. (NB), <i>Ageratum</i> sp. (AB), and <i>Parthenium</i> sp. (PB) on the removal of the most common heavy metal ions cadmium (Cd), lead (Pb), nickel (Ni), zinc (Zn), copper (Cu), and arsenic (As) through adsorption on four types of biochar has been assessed. According to the preliminary analysis, all of the biochar was effective at eliminating a mixture of six heavy metals from the aqueous phase, with nickel removal being the least effective and arsenic removal being the most. The average percentage removal of heavy metal from the wastewater after treatment with the four different biochar was 75.3–82.1% for As, 51.3–92.6% for Cd, 82.6–86.7% for Cr, 75.2–93.1% for Pb, 89.3–95.8% for Zn and 92.5–96.8% for Cu. Pb heavy metal adsorption decreased by 52.6 (PB), 51.4 (AB), 50.01 (NB), and 48.09 (BB) percent when the maximum contamination level (MCL) is increased from one to five times. According to the results of the dosage investigation, Ni adsorption was the worst and As adsorption was the most advantageous of the four types of biochar. Four different types of biochar were used to treat the wastewater at the bio-filtration stage, and the physico-chemical character changes before and after the biochar treatment were noted. The findings showed that the wastewater's total chemical oxygen demand (CODT), total soluble solid (TSS), ammonia, total potassium and nitrogen (TKN), and total phosphorus (TP) levels decreased by 86.1–88.4%, 82.6–79.09%, 88.7–84.4%, 56.6–67.1%, and 86.2–75.94%, respectively. Furthermore, following passage through a charcoal bio-filter, the wastewater's As, Cd, Cr, Pb, Zn, and Cu levels decreased by 77.4–85.4%, 51.5–93.6%, 82.0–87.0%, 93.5–76.7%, 89.0–93.4%, and 92.1–94.4%, respectively. Hence, the four biomass derived biochar can be used as a promising resources for heavy metal removal in addition to wastewater treatment.</p>

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Remediation of Heavy Metal Polluted Soil and Water Using Biomass Residues Valorization for Environmental Application

  • 期刊论文

  • 发表日期：

    2025年7月19日

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  • Shaon Kumar Das

摘要

The impact of four distinct biomass types Bidens sp. (BB), Neyraridia sp. (NB), Ageratum sp. (AB), and Parthenium sp. (PB) on the removal of the most common heavy metal ions cadmium (Cd), lead (Pb), nickel (Ni), zinc (Zn), copper (Cu), and arsenic (As) through adsorption on four types of biochar has been assessed. According to the preliminary analysis, all of the biochar was effective at eliminating a mixture of six heavy metals from the aqueous phase, with nickel removal being the least effective and arsenic removal being the most. The average percentage removal of heavy metal from the wastewater after treatment with the four different biochar was 75.3–82.1% for As, 51.3–92.6% for Cd, 82.6–86.7% for Cr, 75.2–93.1% for Pb, 89.3–95.8% for Zn and 92.5–96.8% for Cu. Pb heavy metal adsorption decreased by 52.6 (PB), 51.4 (AB), 50.01 (NB), and 48.09 (BB) percent when the maximum contamination level (MCL) is increased from one to five times. According to the results of the dosage investigation, Ni adsorption was the worst and As adsorption was the most advantageous of the four types of biochar. Four different types of biochar were used to treat the wastewater at the bio-filtration stage, and the physico-chemical character changes before and after the biochar treatment were noted. The findings showed that the wastewater's total chemical oxygen demand (CODT), total soluble solid (TSS), ammonia, total potassium and nitrogen (TKN), and total phosphorus (TP) levels decreased by 86.1–88.4%, 82.6–79.09%, 88.7–84.4%, 56.6–67.1%, and 86.2–75.94%, respectively. Furthermore, following passage through a charcoal bio-filter, the wastewater's As, Cd, Cr, Pb, Zn, and Cu levels decreased by 77.4–85.4%, 51.5–93.6%, 82.0–87.0%, 93.5–76.7%, 89.0–93.4%, and 92.1–94.4%, respectively. Hence, the four biomass derived biochar can be used as a promising resources for heavy metal removal in addition to wastewater treatment.