Tanning Wastewater Sterilization in the Dark and Sunlight Using Psidium guajava Leaf-Derived Copper Oxide Nanoparticles and Their Characteristics

ACS Omega, Journal Year: 2023, Volume and Issue: 8(42), P. 39680 - 39689

Published: Oct. 9, 2023

Employing Psidium guajava (P. guajava) extract from leaves, copper oxide nanoparticles (CuO NPs), likewise referred to as cupric and renowned for their sustainable harmless biogenesis, have the possibility of being useful purification pollutants well medicinal purposes. The current study examined generated CuO NPs physical qualities by using ultraviolet-visible (UV) spectroscopy. distinctive peak at 265 nm NP production was originally seen. Additionally, an X-ray diffraction (XRD) investigation conducted identify crystalline arrangement produced NPs, a Fourier transform infrared (FTIR) spectroscopy examination performed validate functional compounds NPs. synthesized nanoparticles' catalytic activities (wastewater treatment) were analyzed in dark sunlight modes. properties total darkness resulted 64.21% discoloration, whereas exposure sunshine increased nanomaterials' catalyst performance 92.31%. By lowering Cr(VI), Ni, Pb, Co, Cd sewage proportions 91.4, 80.8, 68.26, 73.25, 72.4% accordingly, demonstrated its effectiveness nanosorbent. Total suspended solids (TSS), dissolved (TDS), chemical oxygen demand (COD), biological (BOD), conductance all successfully reduced nanotreatment tanning effluents, with proportion reductions 93.24, 88.62, 94.21, 87.5, 98.3%, correspondingly.

Language: Английский

---

Tetracycline removal from aqueous solution by magnetic biochar modified with different iron valences: A comparative study

Separation and Purification Technology, Journal Year: 2024, Volume and Issue: 339, P. 126614 - 126614

Published: Feb. 2, 2024

Language: Английский

---

A review on sustainable iron oxide nanoparticles: syntheses and applications in organic catalysis and environmental remediation

Green Chemistry, Journal Year: 2024, Volume and Issue: 26(13), P. 7579 - 7655

Published: Jan. 1, 2024

In this review paper, recent developments of iron oxide nanoparticles are highlighted and discussed in the field organic catalysis environmental remediation.

Language: Английский

---

Synthesis and application of manganese-doped zinc oxide as a potential adsorbent for removal of Congo red dye from wastewater

Environmental Research, Journal Year: 2023, Volume and Issue: 233, P. 116484 - 116484

Published: June 25, 2023

Synthetic dyes are considered toxic compounds and as such not easily removed by conventional water treatment processes. This study demonstrated the synthesis of pure manganese- (Mn), silver- (Ag), iron- (Fe) doped zinc oxide (ZnO) nanoparticles via wet chemical route. In particular, it investigated batch adsorption studies physiochemical properties synthesized ZnO materials for removing congo red (CR) dye. X-ray diffraction (XRD), Raman spectroscopy, energy-dispersive spectroscopy (EDS) confirmed materials. The investigation revealed efficiencies 99.4% CR dye at an optimal dose 0.03 g/30 ml Mn-doped a solution pH 2. capacity each was found to be in order (232.5 mg/g) > Ag-doped (222.2 (212.7 Fe-doped (208.3 mg/g). Both pseudo-second-order kinetics model Langmuir isotherm accurately explained behaviors As such, Van der Waal interactions, H-bonding, electrostatic interaction were mechanisms responsible removal. addition, desorption-regeneration indicated successful reuse exhausted material five cycles with efficiency 83.1%. Overall, this has that could viable adsorbent cleanup dye-contaminated water.

Language: Английский

---

Degradation of tetracycline based on activated persulfate by microbial-induced calcium carbonate precipitation as templates modified sludge biochar

Journal of Water Process Engineering, Journal Year: 2024, Volume and Issue: 60, P. 105193 - 105193

Published: March 29, 2024

Language: Английский

---

Bimetallic Zinc-Iron-Modified Sugarcane Bagasse Biochar for Simultaneous Adsorption of Arsenic and Oxytetracycline from Wastewater

Molecules, Journal Year: 2025, Volume and Issue: 30(3), P. 572 - 572

Published: Jan. 27, 2025

Arsenic (As), a highly toxic and carcinogenic heavy metal, poses significant risks to soil water quality, while oxytetracycline (OTC), widely used antibiotic, contributes environmental pollution due excessive human usage. Addressing the coexistence of multiple pollutants in environment, this study investigates simultaneous adsorption As(III) OTC using novel bimetallic zinc-iron-modified biochar (1Zn-1Fe-1SBC). The developed adsorbent demonstrates enhanced recovery, improved efficiency, cost-effective operation. Characterization results revealed high carbon-to-hydrogen ratio (C/H) specific surface area 1137 m2 g−1 for 1Zn-1Fe-1SBC. Isotherm modeling indicated maximum capacities 34.7 mg 172.4 OTC. Thermodynamic analysis confirmed that processes both were spontaneous (ΔG < 0), endothermic (ΔH > driven by chemical 80 kJ mol−1), with increased system disorder (ΔS 0). mechanisms involved interactions, including pore filling, hydrogen bonding, electrostatic attraction, complexation, π-π interactions. These findings underscore potential 1Zn-1Fe-1SBC as promising remediation wastewater containing coexisting pollutants.

Language: Английский

---

Morphology control of polylactic acid/ZIF-8 composite fiber membranes and adsorption performances for dye and antibiotic

Journal of Materials Science, Journal Year: 2024, Volume and Issue: 59(4), P. 1621 - 1634

Published: Jan. 1, 2024

Language: Английский

---

Removal of sulfamethoxazole from water by biosurfactant-modified sludge biochar: Properties and mechanism

Journal of environmental chemical engineering, Journal Year: 2024, Volume and Issue: 12(6), P. 114200 - 114200

Published: Sept. 20, 2024

Language: Английский

---

Degradation of oxytetracycline in wastewater based on activated persulfate by biosynthesized iron oxide nanoparticles and carbon nanotube-modified biochar

Journal of environmental chemical engineering, Journal Year: 2023, Volume and Issue: 11(5), P. 110377 - 110377

Published: June 16, 2023

Language: Английский

---

From Waste to Resource: Valorization of Lignocellulosic Agri-Food Residues through Engineered Hydrochar and Biochar for Environmental and Clean Energy Applications—A Comprehensive Review

Foods, Journal Year: 2023, Volume and Issue: 12(19), P. 3646 - 3646

Published: Oct. 2, 2023

Agri-food residues or by-products have increased their contribution to the global tally of unsustainably generated waste. These residues, characterized by inherent physicochemical properties and rich in lignocellulosic composition, are progressively being recognized as valuable products that align with principles zero waste circular economy advocated for different government entities. Consequently, they utilized raw materials other industrial sectors, such notable case environmental remediation. This review highlights substantial potential thermochemical valorized agri-food transformed into biochar hydrochar, versatile adsorbents wastewater treatment promising alternatives various energy-related applications. materials, enhanced achieved through tailored engineering techniques, offer competent solutions cost-effective satisfactory results applications contexts removing pollutants from green energy generation. sustainable approach not only addresses concerns but also paves way a more eco-friendly resource-efficient future, making it an exciting prospect diverse

Language: Английский

---