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Ravindran Balasubramani

Ravindran Balasubramani
Southkorea · Department of Environmental Energy & System Engineering

Ph.D

About

155
Publications
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Introduction
Dr. B. Ravindran currently working as an Assistant Professor at the Department of Environmental Energy & System Engineering, Southkorea. He is an active Researcher and working extensively in the areas of Waste Management, Composting, Vermicomposting, Enzymes and energy recovery from agricultural and industrial waste, Wastewater treatment. Currently working on projects based on Biochar amendments to reducing the greenhouse gas emissions during the livestock waste composting process. Aerobic and anaerobic digestion of different kinds of domestic and industrial waste.

Publications

Publications (155)
Article
23 Revised manuscript (clean version) J o u r n a l P r e-p r o o f Journal Pre-proof 2 Abstract 24 This research work evaluated a straight forward approach for pulp bio-bleaching by growing the 25 xylanase producing microorganism (Bacillus pumilus) directly onto the soda pulp and then 26 comparing the results of this approach with effect of the ex...
Article
In recent years, enormous amounts of spent mushroom substrate (SMS) have been generated because of the rapid development of mushroom production. Since the conventional disposal methods of these residues can cause serious environmental problems, alternative waste management techniques are required to ensure sustainable agriculture. However, SMS migh...
Article
Full-text available
The present study describes the production of biodiesel from castor plant (Riccinus communis) using heterogeneous base catalyst of NaOH dispersed on bentonite. The catalysts were prepared via wet impregnation by loading a known amount of NaOH on natural bentonite in various NaOH-to-bentonite ratios of 5 %, 10 %, 20 %, and 25 % (w/w). The prepared c...
Article
Cascade pretreatment of low-pressure steam heating (LPSH) and maleic acid (MA) on pineapple waste (PW) biomass aims to improve delignification, increase enzyme accessibility to carbohydrate in the feedstock while reducing inhibitor by-products. The best conditions for LPSH pretreatment were determined using one-factor-at-a-time (OFAT) while the con...
Article
The synthesis of a sulfated zirconia catalyst and its modification with Ni metal was carried out and applied in the hydrocracking of waste cooking oil into biogasoline. The SO4/ZrO2 (SZ) catalyst was synthesized via a hydrothermal process using ZrOCl2·8H2O as a precursor, followed by sulfation using (NH4)2SO4 solution. The catalyst was calcined at...
Article
Biogas generation using food waste anaerobic co-digestion with activated sludge provides a cleaner addressable system, an excellent solution to global challenges, the increasing energy demands, fuel charges, pollution and wastewater treatment. Regardless of the anaerobic digestate end product values, the technology lacks efficiency and process inst...
Article
Inle Lake is a valuable wetland for local ecosystems and one of Myanmar's freshwater biodiversity hotspot. In this lake, poor management of floating gardens cultivation by some farmers has resulted in leaching of excess nutrients, and then water and sediment were contaminated by chemical residues. This study aims to assess the environmental risk to...
Article
Full-text available
Marine fish biodiversity and conservation linked to human livelihoods along the coast were studied in 2019 using a survey and personal interviews to investigate the effects of environmental and anthropogenic issues on changes in marine fish diversity that affect sustainability. The Zoological Survey of India (ZSI) authenticated 42 finfish, 6 crabs,...
Article
The present study was targeted to treat the cheese factory processed wastewater by using natural coagulants. The results were compared with the CPCB wastewater discharge limit and most of the parameters were exceeded the standard limit. In the present investigation, the processed wastewater was subjected to treatment with Tamarindus indica L. plant...
Article
The bioremediation of emerging recalcitrant pollutants in wastewater via enzyme biotechnology has been evolving as cost-effective with an input of low-energy technological approach. However, the enzyme based bioremediation technology is still not fully developed at a commercial level. The oxidoreductases being the domineering biocatalysts are promi...
Article
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This study explored the impact of different types of biochar on the anaerobic digestion (AD) of food waste and sludge and the biochar-enhanced mesophilic AD of food waste for methane production. A particular focus was placed on the process and underlying mechanisms. Rice husk biochar (RHB550) and palm tree biochar (PTB400) were loaded at levels of...
Article
One of the most significant and difficult jobs in food sustainability, is to make use of waste in the vegetable and fruit processing sectors. The discarded fruits along with their waste materials, is anticipated to have potential use for further industrial purposes via extraction of functional ingredients, extraction of bioactive components, fermen...
Article
Oil spillage is one of the most common pollutants which brings greater economic loss and damage to the environment. The intensity and amount of the damage may vary depending on factors such as the type of oil, the location of the spill, and the climatic parameters in the area. As for any pollution management, the guidelines are Reduce, Re-use, Reco...
Article
This study uses a cost effective and efficient method for production of higher DP (degree of polymerization) Xylooligosaccharides (XOS) from xylan extracted from the waste walnut shells. Copper based metal organic framework (Cu-BTC MOF) was prepared for immobilization of free xylanase (Xy) enzyme by green synthesis method. Both free and immobilized...
Article
Background: Solanum pubescens Willd, growing wild in the hills of Rayadurg jurisdiction of Southwestern Andhra Pradesh, has gained significant attention among researchers for its diverse folkloric applications, existence of novel phytochemicals and leaf extracts which hold great medicinal promises. To date, the S. pubescens fruit's essential oil (...
Article
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The synthesis of biologically active 1,4-dihyripyridine derivatives using a Calotropis gigantea leaf powder and ZnO NPs used as catalyst under solvent-free conditions at room temperature via grinding method has been established in a single-stage, mild, and environmentally friendly green process. The procedure is fast and effective and produces high...
Article
Optimal nutrient management is critical for optimizing flowering, yield, quality and improving soil health. A key approach for making chrysanthemum crop cultivation profitable is balanced fertigation at the right time. This is possible by fertigation through drip. The present study was designed in 2019–2021 at a model floriculture center, Pantnagar...
Research
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The wastes generated from agricultural sector include crop residues, leaf litter, sawdust, and livestock waste. Biological methods are more suitable for the treatment of agro-based wastes, as they convert the waste into valuable form and can be economical. Vermicomposting is one such cost-effective biological method for agro-waste management in whi...
Preprint
Marine fish biodiversity and conservation linking to human livelihood around the coast were carried out during 2019 by survey and personal interviews to study the effects of environmental and anthropogenic issues on marine fish diversity changes which affect the sustainability. 42 finfish, 6 crabs, and 1 shrimp belonging to 3 groups collected along...
Article
Full-text available
Increased industrialization demand using synthetic dyes in the newspaper, cosmetics, textiles, food, and leather industries. As a consequence, harmful chemicals from dye industries are released into water reservoirs with numerous structural components of synthetic dyes, which are hazardous to the ecosystem, plants and humans. The discharge of synth...
Article
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With the present climate change and increasing world population, there is an urgent need to discover creative, efficient, and cost-effective natural products for the benefit of humanity. Biosurfactants are produced by various microorganisms that have several distinct properties compared to other synthetic surfactants, including mild production cond...
Article
Plastic pollution is a serious issue in the aquatic environments. This concerning issue of negative impacts of synthetic plastic debris particles in the aquatic ecosystem give rise to the bioplastic materials. These bioplastics are synthesized from biological organisms, retaining same structural and functional ability as synthetic plastics. However...
Poster
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(https://www.hindawi.com/journals/jchem/si/810410/) This Special Issue will address the groundwater quality issues and the associated risks to human health. The primary objective is to promote integrated approaches that incorporate geospatial tools, numerical and geochemical modeling, statistical techniques, vulnerability, health risk assessment,...
Chapter
Nanotechnology is an evolving biotechnological innovation applied across different industrial sectors such as food safety, pharmaceutics, electronics and other different aspects. Nowadays interests have been made over its use in the maintenance of a sustainable environment mostly, in the field of waste management. Owing to their dimension (1–100 nm...
Article
The present study proposes a system for co-composting food waste and poultry manure amended with rice husk biochar at different doses (0, 3, 5, 10%, w/w), saw dust, and salts. The effect of rice husk biochar on the characteristics of final compost was evaluated through stabilization indices such as electrical conductivity, bulk density, total poros...
Article
The increased usage of titanium dioxide nanoparticles (nTiO2) in consumer products has led to their prevalence in freshwater systems. Nanoplastics, a secondary pollutant, can significantly influence the toxic effects of nTiO2 in freshwater organisms. The present study investigates the role of fluorescent nanoplastics (FNPs) in modifying the harmful...
Article
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Antimicrobial resistance is a global health challenge, and the large loads of biocides dumped into the environment augment the spread of antifungal resistance and environmental contamination. Therefore, eco-friendly antifungal agents must be developed to combat antibiotic resistance and to reduce environmental contamination. In the present investig...
Article
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A simple hydrothermal method is developed for the synthesis of high-quality type II core-shell CdSe/CdTe quantum dots (QDs). The XRD results reveal the formation of mixed phases of CdSe and CdTe with a grain size of 12.6 nm. SEM morphology confirms the uniformly distributed nanoscale CdSe/CdTe with no agglomeration. EDX confirms the elemental prese...
Article
The prominent characteristics of the biochar, high porosity, sorption capacity with low density improve the aeration, making it a desirable amendment material for composting process. The composting efficiency was analysed by the impact of rice husk biochar amendment (0, 2, 4, 6, 8 and 10%) in the presence of salts for the co-composting of food wast...
Article
Full-text available
The goal of this research is to create a novel Schiff base of chitosan polymer derivatives 1a-1j. Nanotechnology is a promising field since it avoids the usage of hazardous chemicals while also saving time. Using the leaf extract of the pharmacologically valuable herb Mentha piperita, we described a green synthesis of ZnO NPs. Zinc oxide ions may b...
Article
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Background: The current study was performed aiming to evaluate possible changes in the effect on oxygen consumption, hematology and gill histopathological parameters in fish (Chanos chanos) upon exposure to sublethal concentration of the metalloid arsenic. Methods: Bioassay tests were conducted for determining the LC50 values of arsenic for 96 h...
Article
Green mediated biosynthesis of iron oxide nanoparticles utilising Rosa indica flower petal extracts (RIFP-FeONPs) was used in this investigation. The RIFP-FeONPs were evaluated by the UV–Visible Spectroscopy, FTIR, SEM, EDX, XRD, Zeta potentials, and DLS, and been engaged than for the elimination of Cr (VI) from the contaminated environments. At 26...
Article
Production of high-quality grass-based silages by microbial-mediated anaerobic fermentation is an effective strategy in livestock farms. In the present study, an ensiling process was used to preserve and enhance fermentative metabolites in triticale silages with novel inoculants of Lactobacillus rhamanosus -52 and, Lactobacillus rhamanosus-54. Trit...
Article
The current study investigated seasonal fluctuations in diversity of fish and heavy metal concentrations in coastal areas, as well as the possible human health risks associated by the heavy metals (Mercury, Lead, Chromium, Cadmium, Copper and Zinc). From five different locations across the coastal area, 44 finfish species from 11 orders and 33 fami...
Article
Hydroxyapatite was isolated from the chicken bones of Black Sumatra and Fighter cock by thermal calcinations at 700 °C. The reducing power of Plumbago indica was responsible for the green synthesis of silver NPs. The isolated hydroxyapatite was used for the preparation of hydroxyapatite doped silver nanoparticles (HAp/AgNPs) against both Gram-posit...
Article
The conversion of palm oil into biofuels using commercial zirconia (ZrO2) modified sulfuric acid (H2SO4) incorporated with Cr metal has been systematically studied. Sulphated zirconia (ZrO2-SO4) was prepared by dispersing ZrO2 in H2SO4 solution via wet impregnation method. Cr-incorporated sulphated zirconia (Cr/ZrO2-SO4) were prepared hydrothermall...
Article
Objectives Phytotoxicity is a significant indicator of final compost product maturity and is assessed through germination bioassays using a variety of crop seeds. In this study, the final composted product extracts from a mixture of different raw materials, such as swine manure (SM), nanobiochar (BC), and sawdust (SD) were examined for their phytot...
Article
The exponential expansion of industrial production during the past few decades has been detrimental to the environment owing to increased contamination with chemical pollutants such as heavy metals and dyes. Each year, large volumes of agricultural byproducts are generated as waste materials from various food crops, one which is wheat bran from whe...
Article
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Objectives Advancement in the biological process of nanoparticles synthesis is an important area of nanotechnology. The aim of this research is to utilize the root extract of Furcraea foetida as reduction and stabilization agents to biosynthesize. Silver nanoparticles (AgNPs) from AgNO3 via a simple green method. Methods By utilizing UV-VIS spectr...
Article
Objectives The objective of this work was to develop a new pretreatment method to remediate processed cheese wastewater using calcium nanoparticles (CaNPs) synthesized from Senna auriculata L. flower extract. Methods Processed cheese effluent was collected from a typical dairy factory and characterized the physical and chemical features such as co...
Article
Full-text available
Karankadu mangrove situated along the Southeast coast of India is known for its unique and extreme species diversity and richness. Ecological functions of this mangrove comprise of nutrient cycling, coastal protection, fish fauna production and carbon sequestration besides providing livelihood to nearby coastal communities. The current study having...
Article
Objectives The present study aimed to isolate potential antimicrobial and antioxidant Streptomyces sp from cave areas of Algeria Methods Streptomyces sp.GLD25 was identified by biochemical, physiological and molecular analysis. The antimicrobial activity has been carried out by well diffusion method, microplates method has been used to perform the...
Article
Full-text available
The coronavirus disease (COVID-19) is caused by the severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2). As isatin-containing compounds exhibit several remarkable biological activities, isatin derivatives were prepared to combat the global pandemic caused by SARS-CoV-2 that is gripping the world. Herein, the synthesis of novel isatin deriv...
Article
In this study agro-waste (Agwt) was aerobically composted using cow dung (CD) and mule dung (MD). Totally six different sets of compost treatments were prepared, as T1 (Agwt + CD, 1:1), T2 (Agwt + MD, 1:1), T3 (Agwt + CD, 1:3), T4 (Agwt + MD, 1:3), T5 (Agwt + CD, 3:1) and T6 (Agwt + MD, 3:1) in individual containers. All the compost treatments were...
Article
Objective Abutilon indicum is a medicinal plant belonging to the Malvaceae family. The current study has been developed to detect Abutilon indicum bio-activity to produce an adequate drug design for cancer. Methods The objective of this work is to perform molecular docking and dynamics as well as inhibitors and cancer cell line studies of Abutilon...
Article
The aim of the present study is to assess the suitability of Strychnos potatorum L. seed protein for defluoridation of potable water. Protein was isolated from Strychnos potatorum L. seed by using Ammonium sulphate precipitation method and coagulation activity was confirmed. Later the extracted protein was used for defluoridation studies of aqueous...
Article
Background The constant development of microbial resistance to the traditional antimicrobial agents and the emergence of new infectious diseases justify the urgent need for new effective antimicrobial molecules. However, the irrational use of antibiotics increases microbial resistance dramatically and along with that the frequency of mortality asso...
Article
For the optimization of silver nanoparticle production, a central composite design was used with three parameters: AgNO3 concentration, green tea extract concentration, and temperature at three different levels. The size of the synthesized silver nanoparticle, its UV absorbance, zeta potential, and polydispersity index were set as the response para...
Article
Full-text available
The presence of antibiotics in the wastewater is one of the important issues related to environmental management. In this study, antibiotics-degrading bacteria were screened from the enriched sewage sludge sample. Among the isolated bacterial strains, Bacillus subtilis AQ03 showed maximum antibiotic tolerance (>2000 ppm). The characterized strain B...
Article
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In the present study, improved moving bed biofilm reactor (MBBR) was applied to enhance the nutrient removal ability of the municipal wastewater. A total of 18 indigenous bacterial isolates were screened from the sewage sludge sample and nitrate reductase, nitrite reductase and hydroxylamine oxidase was analyzed. The strains Pseudomonas aeruginosa...
Article
The waste water released from industries which contain pollutants like heavy metals, dyes and other toxic chemicals brings numerous harms to the ecosystem and humans. Nowadays the nanocomposites based technologies are effectively used for environmental remediation. In the present study, hexavalent chromium was removed from the industrial effluent u...
Article
Because of rapid development in the livestock industry, the production of chicken manure has subsequently increased, which may contribute to environmental pollution. In this regard, in-vessel composting of biochar amended chicken manure and sawdust mixtures was investigated to find out the effect of biochar at the ratios of 0% (control), 3% (T1), 5...
Article
The physicochemical properties, in vitro disintegration, and dissolution times of empty vegetable capsule films prepared by the solvent casting method were compared with gelatin films. The morphological properties of the films, such as surface pH (6.2 ± 0.04–6.4 ± 0.05), appearance, OTR (Oxygen Transmission Rate), and thickness (within 70 mm) were...
Article
Iron oxide nanoparticles synthesis is an expanding area of research due of their magnetic properties and possible applications in several novel technologies. FeONPs are indispensable in the biomedical field for diagnosis, treatments and drug delivery and in bioremediation applications. The synthesis route of nanoparticles is a major concern because...
Poster
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Since ocean disposal and direct landfilling has been prohibited, alternative ways to reduce the food waste (FW) were required. Recently, reusing of organic waste has been emerged as a waste treatment. Until now, a lot of waste reusing technique has been developed. Anaerobic digestion (AD) is one of the method for reusing organic waste. AD could red...
Article
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Green nanotechnology has acquired immense demand due to its cost-effective, eco-friendly and benevolent approach for the synthesis of nanoparticles. Among the biological methods, plants aid as a significant green resource for synthesizing nanoparticles that are safe and non-toxic for human use. In the present investigation, Silver nanoparticles (Ag...
Article
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Aims: Investigate the impact of highly adapted bacterial strains and their ability in waste degradation under a wide range of temperatures. Methods and results: Bacteria isolated from soil and food waste were grown in various media under fluctuated temperatures. After screening for organic compound degradation, the seven strongest bacterial stra...
Cover Page
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The management of organic wastes is given much attention due to their enormous generation leading to environmental pollution and human health risks. Aerobic and anaerobic methods of waste treatment are considered viable alternative methods for reducing the risk of organic pollution loads in the environment. Though traditional composting and anaerob...
Article
The industrial revolution and indiscriminate usage of a wide spectrum of agrochemicals account for the dumping of heavy metals in the environment. In-situ/ex-situ physicochemical, and bioremediation strategies with pros and cons have been adopted for recovering metal contaminated soils and water. Therefore, there is an urgent requirement for a cost...
Article
While the technologies available today can generate high-quality water from wastewater, the majority of the wastewater treatment plants are not intended to eliminate emerging xenobiotic pollutants, pharmaceutical and personal care items. Most endocrine disrupting compounds (EDCs) and personal care products (PPCPs) are more arctic than most regulate...
Article
Radiation can be lethal at high doses, whereas controlled doses are useful in medical applications. Other applications include power generation, agriculture sterilization, nuclear weapons, and archeology. Radiation damages genetic material, which is reflected in genotoxicity and can cause hereditary damage. In the medical field, it is essential to...
Article
In photo catalysis, the transition metals are an emerging class of materials due to their activity and stability with ligands coordination. Such metal can be stabilized by the Schiff base ligands, which could prevent the leaching of the metal active centers during the catalytic process The present works describe the copper(II) and nickel(II) Schiff...
Article
Full-text available
Recently, much research has been carried out to find a suitable catalyst for the transesterification process during biodiesel production where heterogeneous catalysts play a crucial role. As homogenous catalysts present drawbacks such as slow reaction rate, high-cost due to the use of food grade oils, problems associated with separation process, an...
Article
Vermitransformation of coir pith (CP) into enriched vermifertilizer has been achieved by amending a green-manure plant, Sesbania sesban (SS) for the first time, and cow dung (CD) in five different combinations: T1(1:0:1), T2(4:3:3), T3(5:3:2), T4(5:4:1) and T5(1:1:0). The substrates were 28 days precomposted with Pleurotus sajor-caju followed by 50...