Innovative Use of Pinus patula Biochar for Textile Wastewater Treatment

Pinus patula biochar effectively treats textile wastewater by removing Indigo Carmine dye, achieving 81.3% color removal and 76.8% DOC reduction. A thermo-chemical regeneration method allows reuse over seven cycles, promoting sustainable wastewater management and aligning with circular bioeconomy principles. Further research on disposal is needed.

May 28, 2024

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Gallego-Ramírez, C., Chica, E., Rubio-Clemente, A. (2024). A Study of the Feasibility of Pinus patula BiocharBiochar is a carbon-rich material created from biomass decomposition in low-oxygen conditions. It has important applications in environmental remediation, soil improvement, agriculture, carbon sequestration, energy storage, and sustainable materials, promoting efficiency and reducing waste in various contexts while addressing climate change challenges. More: The Regeneration of the Indigo Carmine-Loaded Biochar and Its Efficiency for Real Textile Wastewater Treatment. *Processes*. https://doi.org/10.3390/pr12050939

Water pollution from textile industries is a critical environmental challenge, particularly due to the discharge of harmful organic dyes into aquatic ecosystems. To address this, researchers are exploring the potential of various adsorbent materials for wastewater treatment, with biochar emerging as a promising candidate.

A recent study evaluated the feasibility of using biochar derived from Pinus patula wood pellets for removing Indigo Carmine dye from textile wastewater. The researchers aimed to assess the regeneration capacity of the biochar and its efficiency in treating real textile effluents.

The study focused on optimizing a thermo-chemical regeneration technique. The spent biochar, loaded with Indigo Carmine, was heated to 160°C for 45 minutes, followed by immersion in a 75% ethanol solution for six hours. This method allowed the biochar to be used effectively over seven adsorption-desorption cycles, maintaining high removal efficiencies.

The research demonstrated that Pinus patula biochar could significantly reduce color and dissolved organic carbon (DOC) in real textile wastewater. Under optimal conditions (pHpH is a measure of how acidic or alkaline a substance is. A pH of 7 is neutral, while lower pH values indicate acidity and higher values indicate alkalinity. Biochars are normally alkaline and can influence soil pH, often increasing it, which can be beneficial More 3, biochar dose of 13.5 g/L, and particle size of 300-450 µm), the biochar achieved a color removal efficiency of 81.3% and a DOC reduction of 76.8% within 120 minutes of treatment.

The successful regeneration and high removal efficiency suggest that Pinus patula biochar can be a cost-effective and sustainable solution for industrial-scale wastewater treatment. Moreover, the use of biochar aligns with the principles of circular bioeconomy, converting waste materials into valuable resources for pollution control.

Despite its potential, the study highlighted the need for further research on the final disposal of dye-loaded biochar to prevent secondary pollution. Evaluating the toxicity of spent biochar and exploring its application as a soil amendmentA soil amendment is any material added to the soil to enhance its physical or chemical properties, improving its suitability for plant growth. Biochar is considered a soil amendment as it can improve soil structure, water retention, nutrient availability, and microbial activity. More are crucial steps toward ensuring its environmental safety.

Pinus patula biochar presents a viable option for treating textile wastewater, offering both environmental and economic benefits. With continued research and development, this approach could play a significant role in promoting sustainable wastewater management practices in the textile industry.