National Journals

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Author: search.filters.author.Mathiyazhagan, NarayananHas files: Yes

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    TANNERY WASTEWATER REMEDIATION COMPETENCE OF METAL TOLERANT BACTERIA AND FUNGI UNDER THE INFLUENCE OF CHEMICALLY MODIFIED WATER HYACINTH BIOCHAR: AN IN VITRO EVALUATION
    (Springer Link, 2023-11-22) Kandasamy, Gajendiran; Ying, Ma; Sabariswaran, Kandasamy; Amal Abdullah, A. Sabour; Maha, Alshiekheid; Arivalagan, Pugazhendhi; Mathiyazhagan, Narayanan
    This study was trying to find a sustainable approach to remediate the tannery wastewater by various treatments sets (set-I to set-VIII: consists of KOH modified biochar, Bacillus cereus, and Aspergillus flavus biomass), and treatment successfulness was determined by phytotoxicity and cytotoxicity studies on potential Vigna unguiculata seedlings and Artemia franciscana larvae, respectively. Three tannery wastewater samples were collected from 3 sites (I, II, and III); among them, the physicochemical properties of site I were beyond the permissible limits containing more volume of harmful heavy metals such as Cr, Cd, Pb, As, Co, Cu, Fe, Zn, and Mn than other sample. The test B. cereus and A. flavus showed remarkable metal tolerance to heavy metals such as Cr, Cd, Pb, As, Co, Cu, Fe, Zn, and Mn at 800 µg mL−1. The bioremediation study results stated that the KOH modified pre-synthesized and characterized water hyacinth biochar with the blend of B. cereus and A. flavus (treatment set-VII) biomass substantially reduced/removed (Cr, Cd, Pd, As, Co, Cu, Fe, Zn, and Mn as 54.75%, 49.52%, 30.49%, 17.53%, 29.07%, 14.75%, 5%, 27.27%, and 9.2%, respectively) the heavy metals from the tannery wastewater. The treatment effectiveness was determined by phytotoxicity and cytotoxicity studies on V. unguiculata seedlings and A. franciscana larvae, respectively. Among various treatment sets, the set-VII demonstrated absence of phytotoxicity and cytotoxicity on V. unguiculata seedlings and A. franciscana larvae, respectively. This clearly shows that the KOH modified biochar with B. cereus and A. flavus biomass can be used to manage and treat tannery wastewater in a sustainable manner.
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    A REVIEW ON HYDROTHERMAL LIQUEFACTION OF ALGAL BIOMASS ON PROCESS PARAMETERS, PURIFICATION AND APPLICATIONS
    (Elsevier, 2022-04-01) Sathish Raam, Ravichandran; Chitra Devi, Venkatachalam; Mothil, Sengottian; Sarath, Sekar; Sabariswaran, Kandasamy; Kesav Prasath, Ramasamy Subramanian; Kirubakaran, Purushothaman; Aravindan Lavanya, Chandrasekaran; Mathiyazhagan, Narayanan
    Algae, a potential biomass feedstock with a faster growth rate and capability of greenhouse gas absorption, mitigates the limitations of the first- and second-generation feedstock in bio-oil production. hydrothermal liquefaction (HTL) is known to be an active method capable of producing substantial energy resources. In HTL, biomass undergoes thermal depolymerization in the presence of water, at around 280 °C–350 °C following subcritical and near supercritical conditions to produce chemical compounds such as alkanes, nitrogenates, esters, phenolics, etc. The primary product, “Biocrude/Bio-oil” obtained from the reaction, is identified as the essential fuel source after processing and also as a distinct value-added chemical source, along with biochar and biogas as co-products. This review outlines a range of routes available for thermochemical conversion of the algal biomass. It also provides a better understanding of the reaction mechanism like depolymerization, decomposition, and re-polymerization, operating conditions like temperature, pressure, the quantity of catalyst required, and the solvent used in the process. The review also highlights the yield achieved by altering the aforementioned parameters, comparing and presenting them as a collective result.
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    THE CURRENT STATE OF ALGAE IN WASTEWATER TREATMENT AND ENERGY CONVERSION: A CRITICAL REVIEW
    (Elsevier, 2023-06) Sabariswaran, Kandasamy; Mathiyazhagan, Narayanan; Rathinam, Raja; Kesavan, Devarayan; R, Kavitha
    Due to the rapid expansion of the global economy and population, there aren't enough water resources accessible for direct human consumption. Therefore, water remediation will unavoidably take center stage on a worldwide platform. The development of microalgae can be supported by several types of wastewater (WW). They might be able to clean up pollutants from industry and urban effluents. Due to its low energy requirements, microalgae's capacity to survive in various environmental circumstances, and the potential to convert WW nutrients into high-value chemicals, microalgae-based wastewater treatment (WWT) has already received attention. Recent studies have reported using microalgae to remove pharmaceutical compounds and pesticides from wastewater produced by industrial and agricultural processes and removing nutrients from wastewater from WWTs. As a result, utilizing microalgae for both wastewater treatment and biofuel production could be a cost-effective solution to these challenges. This review emphasizes recent developments in the production of microalgae for WW cleanup. Additionally, it highlights the current problems and opportunities in the emerging algae-based sector.
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    MICROBIAL DEGRADATION AND TRANSFORMATION OF PPCPS IN AQUATIC ENVIRONMENT: A REVIEW
    (Pub Med, 2023-08) Mathiyazhagan, Narayanan; Sabariswaran, Kandasamy; Jintae, Lee; Selvaraj, Barathi
    The Pharmaceuticals and Personal Care Products (PPCPs) presence at harmful levels has been identified in aquatic ecosystems all over the world. Currently, PPCPs are more common in aquatic regions and have been discovered to be extremely harmful to aquatic creatures. Waste-water treatment facilities are the primary cause of PPCPs pollution in aquatic systems due to their limited treatment as well as the following the release of PPCPs. The degree of PPCPs elimination is primarily determined by the method applied for the remediation. It must be addressed in an eco-friendly manner in order to significantly improve the environmental quality or, at the very least, to prevent the spread as well as effects of toxic pollutants. However, when compared to other methods, environmentally friendly strategies (biological methods) are less expensive and require less energy. Most biological methods under aerobic conditions have been shown to degrade PPCPs effectively. Furthermore, the scientific literature indicates that with the exception of a few extremely hydrophobic substances, biological degradation by microbes is the primary process for the majority of PPCPs compounds. Hence, this review discusses about the optimistic role of microbe concerned in the degradation or transformation of PPCPs into non/less toxic form in the polluted environment. Accordingly, more number of microbial strains has been implicated in the biodegradation/transformation of harmful PPCPs through a process termed as bioremediation and their limitations.