Prevention of groundwater contamination from the pollutants released from dyeing industries using biochar produced from palm shell

Ravindiran, Gokulan; Jeyaraju, Raja Murugadoss; Nandipati, Govind; Seerangagounder, Satheeshkumar; Al‐Zaqri, Nabil; Boshaala, Ahmed; Hayder, Gasim

doi:10.1016/j.uclim.2023.101515

Cited by 4 publications

(4 citation statements)

References 22 publications

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“…On the other hand, as the dye concentration rises, more dye molecules contend for the same adsorption sites on the surface, decreasing the effectiveness of dye removal. This is due to the fact that when the quantity of dye molecules rises, the adsorbent material’s surface area remains constant. , …”

Section: Resultsmentioning

confidence: 99%

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Enhanced Wastewater Remediation Using Mesoporous Activated Wheat Straw Biochars: A Dye Removal Perspective

Priyanka,

Vashisht,

Ibhadon

et al. 2024

ACS Sustainable Resour. Manage.

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The escalating contamination of water bodies by synthetic dyes necessitates innovative and ecoconscious strategies for wastewater treatment. In this study, activated biochars BC-800 (1:0.25), BC-800 (1:0.5), and BC-800 (1:1) from wheat straw were synthesized. Here, ratios denote the mass relationship between wheat straw and potassium hydroxide; "800" represents the pyrolysis temperature. These activated biochars were rigorously characterized revealing the most efficient material, BC-800 (1:1), presenting a surface area of 2578.82 m 2 /g and average pore diameter of 5.51 nm. Across parallel batch experiments, it effectively extracted synthetic dyes (rhodamine B (RhB), methylene blue (MB), and methyl orange (MO)) from wastewater within 15−20 min, primarily through chemisorption pathways. Increased surface area and porosity resulted in a greater dispersion of adsorption sites including C�C linkages (π−π interactions) and Hbonding via surface carbonyl groups (C�O). To understand the adsorption mechanism, Langmuir, Freundlich, and Temkin isotherm models were employed to investigate the equilibrium adsorption behavior. Results show that BC-800 (1:1) followed the Freundlich isotherm (R 2 : 0.9659 for RhB, 0.9927 for MB, and 0.9979 for MO, respectively), showing dye molecules form multilayers on the surface of the biochar (π-stacking). Biochar recycling through chemical regeneration demonstrated sustained dye removal efficiency >90% for BC-800 (1:1) over multiple cycles.

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Section: Resultsmentioning

confidence: 99%

“…This is due to the fact that when the quantity of dye molecules rises, the adsorbent material's surface area remains constant. 48, 49 3.2.4. Effect of Contact Time on Adsorption Capacity.…”

Section: Effect Of Initial Dye Concentration On Adsorption Capacitymentioning

confidence: 99%

Enhanced Wastewater Remediation Using Mesoporous Activated Wheat Straw Biochars: A Dye Removal Perspective

Priyanka,

Vashisht,

Ibhadon

et al. 2024

ACS Sustainable Resour. Manage.

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“…Several research on the regeneration of used ACs following drug uptake employing a variety of methodologies, including thermal regeneration, chemical desorption, and catalytic ozonation, can be found in the literature. However, getting new, inexpensive adsorbents, including those made from waste products, may be more cost-effective than recycling the used ones when taking the total adsorption system's economic performance into account (Ravindiran et al 2023). In order to lessen the environmental risk associated with the disposal of used adsorbents, ball milling has also been suggested as an efficient approach to decompose adsorbed contaminants.…”

Section: Adsorbent Replacementmentioning

confidence: 99%

Removal of pharmaceuticals from wastewater: a review of different adsorptive approaches

2024

Global NEST: The International Journal

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<p>Over the past few decades, pharmaceuticals have contaminated the marine ecosystem. The entry of prescription medications into the environment, their underlying causes and problems, and effective methods for treating such contaminated water are all evaluated in this study. Adsorption is becoming a more popular preferred treatment method because, compared to other post-secondary treatments, it has less strength requirements and is easier to use. Despite being extensively researched as a chemosorptive for prescription medications, industrial activated charcoal is heavily restricted due to its expensive cost. For the purpose of eliminating prescription drugs from water and wastewater, novel unconventional low-cost alternatives were looked into, and adsorbents based solely on clay, biochar, agricultural wastes, industrial wastes, and metal-natural frameworks were discussed in a number of research studies. This second study examines prominent articles that address the problem, covering the continuous fixed-bed process, regeneration capabilities, historical, economic, and practical aspects, as well as adsorption performance in terms of kinetics, equilibrium, and thermodynamics. Chemicals known as pharmaceuticals pollute the environment. This paper discusses the prevalence of pharmaceuticals in the environment, their main causes and effects, and proactive steps to remove them from the contaminated medium. This summary explains how the pollutant is mixed with the aquatic environment, along with its fundamental causes, insinuations, and effective methods for eliminating it. Compared to other therapies, adsorption offers advantages including less strength depletion and easier functioning conditions, making it a promising therapeutic approach.</p>

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“…The inability of BC to be regenerated in that case was attributed to the thermal deterioration of the BC, which induced the change in its physicochemical properties. Ravindiran et al [39] regenerated palm shell BC using a 0.01 M NaOH solution, and three adsorption-desorption cycles were conducted with the removal efficiency decreasing from 71.57% to 68.78%. The reduction in the removal efficiency was attributed to the loss of functional groups on the surface of the adsorbent.…”

Section: Regeneration Studiesmentioning

confidence: 99%

A Study of the Feasibility of Pinus patula Biochar: The Regeneration of the Indigo Carmine-Loaded Biochar and Its Efficiency for Real Textile Wastewater Treatment

Gallego-Ramírez,

Chica,

Rubio-Clemente

2024

Processes

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The feasibility of an adsorbent material like biochar (BC) depends on its regeneration capacity and its ability to achieve high removal efficiencies on real wastewater (WW) effluents. In this study, the regeneration capacity of the Pinus patula BC previously used in the removal of Indigo Carmine from water was evaluated. The regeneration technique that resulted in the highest desorption efficiency was a thermo-chemical method that consisted of heating the spent BC in a stove at 160 °C for 45 min followed by regeneration with ethanol (C2H6O) at a concentration of 75% for 6 h. Through this regeneration method, it was found that Pinus patula BC could be used in seven consecutive adsorption–desorption cycles. The feasibility of this BC was also assessed by evaluating the adsorbent’s efficiency in real textile WW. Under optimal operational conditions (solution pH = 3, BC dose = 13.5 g/L, and BC particle size = 300–450 µm), the highest removal efficiencies in terms of colour and dissolved organic carbon (DOC) were 81.3 and 76.8%, respectively, for 120 min of treatment. The results obtained in the regeneration studies and the treatment of real textile WW suggested that the use of Pinus patula BC could be suitable to be scaled to an industrial level, contributing to sustainable development and the circular bioeconomy by using a waste to solve the dye pollution problem of another waste.

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Prevention of groundwater contamination from the pollutants released from dyeing industries using biochar produced from palm shell

Cited by 4 publications

References 22 publications

Enhanced Wastewater Remediation Using Mesoporous Activated Wheat Straw Biochars: A Dye Removal Perspective

Enhanced Wastewater Remediation Using Mesoporous Activated Wheat Straw Biochars: A Dye Removal Perspective

Removal of pharmaceuticals from wastewater: a review of different adsorptive approaches

A Study of the Feasibility of Pinus patula Biochar: The Regeneration of the Indigo Carmine-Loaded Biochar and Its Efficiency for Real Textile Wastewater Treatment

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