Publications by authors named "M Govarthanan"

Herein, luminous blue carbon quantum dots (CDs) employing Anisomeles indica (Catmint) were reported with imaging, self-targeting, and therapeutic effects on triple-negative breast cancer (TNBC, MDA-MB-231) cells. The salient features of CDs generated from catmint are as follows: i) optical studies confirm CDs with excitation-dependent emission; ii) high-throughput characterization authenticates the formation of CDs with near-spherical shape with diameter ranging between 5 and 15 nm; iii) CDs induce cytotoxicity (3.22 ± 0.

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Article Synopsis
  • Chromium metal is a toxic byproduct from various industries, and reducing it is costly and labor-intensive.
  • Microbial fuel cells (MFCs) present a sustainable solution for chromium reduction while simultaneously generating electricity, particularly with the use of specific materials like nanoparticles.
  • This review highlights recent studies over the past five years, showing that double-chamber MFCs can achieve up to 100% chromium removal, especially using iron electrodes and advanced nanoparticle configurations for enhanced efficiency.
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Plastic particles, measuring <5 mm in size, mainly originate from larger plastic debris undergoing degradation, fragmenting into even smaller fragments. The goal was to analyze the spatial diversity and polymer composition of microplastics (MPs) in North Chennai, South India, aiming to evaluate their prevalence and features like composition, dimensions, color, and shape. In 60 sediment samples, a combined count of 1589 particles were detected, averaging 26 particles per 5 g of dry sediment.

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  • - Plastic waste poses a significant threat to ecosystems, prompting researchers to identify bacteria capable of degrading polyurethane (PU) from plastic waste, resulting in four isolates (RS1, RS6, RS9, RS13) being evaluated for their degradation capabilities.
  • - The Moraxella catarrhalis strain BMPPS3 (identified as RS13) demonstrated the highest PU degradation efficiency, losing 67.36% of PU in 30 days, and produced biosurfactants that enhanced its growth and PU degradation.
  • - Analysis revealed that the degradation process generated fatty acids and alkanes while facilitating biofilm formation on PU surfaces, along with increased production of extracellular enzymes such as esterase and urethanase, indicating the
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The jarosite waste used during this study consists of minute amount of arsenic that has a potential to be leached into environment when kept in open area. This study tried to recover arsenic from jarosite waste using hydrometallurgical treatment. The comprehensive characterization of jarosite samples was performed using various analytical techniques, including X-ray diffraction (XRD), Fourier transform Infrared (FTIR), scanning electron microscopy (SEM), and energy-dispersive X-ray spectroscopy (EDX), and it was characterized as natrojarosite.

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