Sivamani Sivalingam

Scopus Publications

A comprehensive review on cradle to cradle strategies for sustainable food waste valorization
Sivamani Sivalingam, S. Nandhitha, S. T. Pragadheeshwaran
Discover Food, 2026
Food waste (FW) is ever challenging to the environmental, economic, and society due to exponential disposal. The global population has been continuing to that grow results the FW dumping thus urgent need for sustainable solutions. Food waste management (FWM) strategies such as biological conversion, thermal conversion, chemical conversion, mechanical and physical processing are aids to recover and utilize the valuable resources from FW. These conventional methods are optimal approach depends on feedstock composition, target products, scale of operation, and economic considerations. The various methodologies are used for converting FW into value-added products, including biofuels, biochemicals, animal feed, and fertilizers etc. The aim of this review is to explore various conventional valorization FWM techniques to produce value-added products and their applications. In addition, examined the environmental and economic benefits of FW valorization that highlights the importance of integrated approaches as combined waste reduction, recovery, and recycling strategies to create a circular economy. Overall, this review delivers the FW valorization as sustainable solution for reducing waste generation, promoting resource recovery, and creating new economic opportunities for food industry.
STATISTICAL ANALYSIS OF ENVIRONMENTAL IMPACTS FROM BALLPOINT PEN USAGE AND DISPOSAL
Sivamani Sivalingam, Vijayaraghavan Gopal, Anush Venkataraman, Lokesh Babu, Rishi Rajan
Environmental Engineering and Management Journal, 2025
The widespread use of ballpoint pens (BPPs) has emerged as a notable source of plastic pollution, yet their environmental impacts remain largely overlooked.This study presents a statistical analysis of BPP usage and disposal patterns in India, considering variations across age groups, professional activities, and the effects of the COVID-19 pandemic.Data were collected over a twoyear period with an additional four months during the lockdown, revealing an average individual consumption of approximately one BPP per week.The distribution of usage followed a positively skewed and leptokurtic pattern, with peak consumption observed among students aged 12-25, particularly at 17 years.Professional use patterns varied significantly: journalists, scriptwriters, and electricians reported higher pen turnover, while IT professionals and professors exhibited reduced dependence due to increasing reliance on digital tools.The pandemic led to a marked reduction in student pen use, but professional consumption remained largely unaffected.Extrapolation of survey data indicated that India disposes of approximately 49.92 billion BPPs annually, corresponding to 5.49 million tonnes of plastic waste.The associated carbon footprint was estimated at 4.83 MTCE per ton of plastic, resulting in 2.65 million tonnes of CO2e emissions per year.Improper disposal of BPPs exacerbates environmental risks: their composite design hinders recycling, leading to landfill accumulation, microplastic generation, leaching of toxic substances, and release of hazardous gases during incineration.Notably, 97% of users replaced rather than refilled pens, reinforcing single-use practices.Survey responses indicated increasing awareness of alternatives, with 90% of participants supporting fountain pens (FPs) as an eco-friendly option.Adoption of FPs could reduce plastic waste by over 60%.This study highlights the underestimated environmental burden of BPPs and emphasizes the importance of promoting sustainable writing instruments, encouraging refill practices, and advancing technological transitions toward digital documentation to mitigate future impacts.
Facemask usage and disposal challenges: a survey on safe and user friendly mask for regular practices
Vijayaraghavan Gopal, Sivamani Sivalingam, Keerthana Sureshkumar, Vinod Kumar Gangadharan
International Journal of Environment and Waste Management, 2025
The present study focuses on the extensive use of facemask (FM) and survey on eco-friendly material. The various types of masks including cloth mask, surgical masks, and respirators (class N, P, R) with their leakage, filtration, and penetration characteristics were analysed. This study helps the users to identify the specific applications of different types of mask and their safe disposal. Hence, a survey was conducted as masks preferred, how frequently they were changed, and the challenges faced while wearing the mask-like difficulty in breathing, fogging of lens, etc. The survey was conducted through a quantitative method with a set of questionnaires. It is observed that the majority (40.5%) of the population considers the N95 mask to be relatively safe and effective. The improper disposal of FM causes of diseases, forbids free aeration, clogs the waterways, and severe sewage problems. Therefore, a proper disposal method needs to be followed to reduce environmental pollution.
Visible-light driven photocatalytic degradation of organic dyes by carbonized palladium-impregnated graphene oxide quantum dots
Medidi Raja Sekhar, Nagaraj Basavegowda, Levin Anbu Gomez, Asma Musfra Shabbirahmed, Puneetha Gangadahosahalli Krishnegowda, Sivamani Sivalingam, Rajkumar Sekar, SanthoshKumar Jayakodi, Meng-Jen Lee, Prathap Somu
Inorganic and Nano Metal Chemistry, 2025
In this study, palladium impregnated graphene oxide quantum dots (Pd-GOQD) have been synthesized by biogenic carbonization. The formation of Pd-GOQD and GOQD was confirmed by physicochemical techniques such as Brunauer–Emmett–Teller (BET), photoluminescence spectroscopy, XRD, Raman spectroscopy, XPS analysis, and HAADF-STEM analysis. TEM analysis revealed that GOQD and Pd-GOQD are spherical, with a mean size of around 2.9 and 3.7 nm, respectively. The photocatalytic activities of Pd-GOQD and GOQD using methylene blue (MB) and methyl orange (MO) dye under visible light were investigated using spectroscopic analysis. Pd-GOQD showed nearly better dye degradation efficiency as 90% dye was reduced within 75 min compared to 50% efficiency of GOQD. Kinetic of the reduction process of MB and MO was well correlated with first-order kinetics. Besides, the Pd-GOQD exhibited its regeneration and reusability as its photo-degradation performance remained unaffected after five successive reuses. Hence GO-Pd nanocomposite was a promising option for removing synthetic dyes from aqueous solutions.
Microplastics in Asia: overcoming sampling, analysis, and regulatory challenges to protect the ecosystem - a review
Sivamani Sivalingam, P. Gomathi Priya, D. Shanthana Lakshmi, Srinivas T. G. Srimath
Environmental Science Atmospheres, 2024
Microplastics (MPs) are emerging contaminants that require attention in sampling, analysis, and characterization in both indoor and outdoor air pollution to mitigate the potential dangers they pose to public health and the economy.
Low-cost adsorbent from biomass for removal of Fe(II) and Mn(II) for water treatment: batch and column adsorption study
Sivamani Sivalingam, Vijayaraghavan Gopal
Chemical Papers, 2024
Petroleum industry waste into wealth for environmentally sustainable materials
Sivamani Sivalingam, T. K. K. Oviya, M. R. Hema Latha, D. Lavanya
From Waste to Wealth, 2024
Industrial biomass waste as an economical, potential adsorbent for removing the Bismarck Brown R dye and zinc metal ions from effluents
Sivamani Sivalingam, Sowmiya A.
Environmental Science Advances, 2024
This study focuses on utilizing date seed biomass to produce activated carbon (AC) through chemical activation. The resulting AC is then employed for the removal of both rich contaminants of dye and heavy metal ions from wastewater.
Environmental and health effects of global warming
Sivamani Sivalingam, A. Harish, M. Roshinth Selva
Health and Environmental Effects of Ambient Air Pollution Volume 1 Air Pollution Human Health and the Environment, 2024
Environmental and health effects of acid rain
Sivamani Sivalingam, G. Vishal, B. Anush
Health and Environmental Effects of Ambient Air Pollution Volume 1 Air Pollution Human Health and the Environment, 2024
Biosorption of Toxic Reactive Blue Textile Dye from Effluent Water Using Immobilized Biomass Based Adsorbent
Tanjore Ramachandran Sundararaman, , Sivamani Sivalingam, Melvin Millicent Mabel, Trisha Gobinath, , , and
Environment and Natural Resources Journal, 2024
Comprehensive analysis and process simulation of biodiesel production from biomass sources
Sivamani Sivalingam
Indian Journal of Chemical Technology, 2023
Coagulation Study on Extracted Algal Alginate from Red Algae as Natural Coagulant for Remediation of Textile Dye Congo Red
Sivamani Sivalingam, , Vijayaraghavan Gopal, and
Environment and Natural Resources Journal, 2023
EFFICIENT REMOVAL OF MAGENTA DYE FROM WATER BY BOTH NATURAL AND CHEMICAL COAGULANTS
Sivamani Sivalingam, Vijayaraghavan Gopal, Vimalkumar Adichakkravarthy
Rasayan Journal of Chemistry, 2023
Efficient removal of hexavalent chromium ions from simulated wastewater by functionalized anion exchange resin: Process optimization, isotherm and kinetic studies
J. Leonard, Sivamani Sivalingam, Rejeti Venkata Srinadh, Susmita Mishra
Environmental Chemistry and Ecotoxicology, 2023
Preparation of Carboxymethyl Cellulose from Musa paradisiaca Pseudo Stem Using an Alkaline Treatment
Vijayaraghavan Gopal, Dharani Dharan Dharmarajan, Sivamani Sivalingam
Nature Environment and Pollution Technology, 2022
Rice husk ash derived nanocrystalline ZSM-5 for highly efficient removal of a toxic textile dye
Sivamani Sivalingam, Sujit Sen
Journal of Materials Research and Technology, 2020
An ultra-fast non-conventional waste management protocol to recycle of industrial fly ash into zeolite X
Sivamani Sivalingam, Sujit Sen
Environmental Science and Pollution Research, 2019
Sono-assisted Adsorption of As(V) from Water by Rice-Husk-Ash-Derived Iron-Modified Mesoporous Zeolite Y: A Cradle-to-Cradle Solution to a Problematic Solid Waste Material
Sivamani Sivalingam, Sujit Sen
Industrial and Engineering Chemistry Research, 2019
Valorization of coal fly ash into nanozeolite by sonication-assisted hydrothermal method
Sivamani Sivalingam, Sujit Sen
Journal of Environmental Management, 2019
Efficient removal of textile dye using nanosized fly ash derived zeolite-x: Kinetics and process optimization study
Sivamani Sivalingam, Sujit Sen
Journal of the Taiwan Institute of Chemical Engineers, 2019
Efficient sono-sorptive elimination of methylene blue by fly ash-derived nano-zeolite X: Process optimization, isotherm and kinetic studies
Sivamani Sivalingam, Tatinaidu Kella, Manisha Maharana, Sujit Sen
Journal of Cleaner Production, 2019
Swift sono-hydrothermal synthesis of pure NaX nanocrystals with improved sorption capacity from industrial resources
Sivamani Sivalingam, Sujit Sen
Applied Surface Science, 2019
Rapid ultrasound assisted hydrothermal synthesis of highly pure nanozeolite X from fly ash for efficient treatment of industrial effluent
Sivamani Sivalingam, Sujit Sen
Chemosphere, 2018
Optimization of synthesis parameters and characterization of coal fly ash derived microporous zeolite X
Sivamani Sivalingam, Sujit Sen
Applied Surface Science, 2018
Extraction of resin from cashew nut sludge an agro-industrial wastes
Journal of Scientific and Industrial Research, 2015

RECENT SCHOLAR PUBLICATIONS

A comprehensive review on cradle to cradle strategies for sustainable food waste valorization
S Sivalingam, S Nandhitha, ST Pragadheeshwaran
Discover Food , 2026
2026
Visible-light driven photocatalytic degradation of organic dyes by carbonized palladium-impregnated graphene oxide quantum dots
M Raja Sekhar, N Basavegowda, LA Gomez, AM Shabbirahmed, ...
Inorganic and Nano-Metal Chemistry 55 (9-10), 1019-1030 , 2025
2025
Citations: 2
STATISTICAL ANALYSIS OF ENVIRONMENTAL IMPACTS FROM BALLPOINT PEN USAGE AND DISPOSAL.
V Gopal, S Sivalingam, A Venkataraman, L Babu, R Rajan
Environmental Engineering & Management Journal (EEMJ) 24 (9) , 2025
2025
Facemask usage and disposal challenges: a survey on safe and user friendly mask for regular practices
V Gopal, S Sivalingam, K Sureshkumar, VK Gangadharan
International Journal of Environment and Waste Management 37 (2), 172-187 , 2025
2025
Low-cost adsorbent from biomass for removal of Fe (II) and Mn (II) for water treatment: batch and column adsorption study
S Sivalingam, V Gopal
Chemical Papers 78 (8), 4891-4908 , 2024
2024
Citations: 5
Petroleum Industry Waste into Wealth for Environmentally Sustainable Materials
S Sivalingam, TKK Oviya, MRH Latha, D Lavanya
From Waste to Wealth, 603-622 , 2024
2024
Chapter 5 - Environmental and health effects of global warming
S Sivalingam, A Harish, MR Selva
Health and Environmental Effects of Ambient Air Pollution Volume 1: Air … , 2024
2024
Citations: 7
Chapter 4 - Environmental and health effects of acid rain
S Sivalingam, G Vishal, B Anush
Health and Environmental Effects of Ambient Air Pollution Volume 1: Air … , 2024
2024
Citations: 16
A review of current practices on lead ions removal from different aqueous streams
GP Ponnaiah, S Lakshmi, AB Lakshmi, S Sivalingam
Brazilian Journal of Development 10 (3), e68334-e68334 , 2024
2024
Citations: 2
Biosorption of Toxic Reactive Blue Textile Dye from Effluent Water Using Immobilized Biomass Based Adsorbent: 10.32526/ennrj/22/20230192
TR Sundararaman, S Sivalingam, MM Mabel, T Gobinath
Environment and Natural Resources Journal 22 (1), 1-12 , 2024
2024
Citations: 3
Environmental and health effects of acid rain, in health and environmental effects of ambient air pollution
S Sivalingam, G Vishal, B Anush
Elsevier , 2024
2024
Citations: 6
Microplastics in Asia: overcoming sampling, analysis, and regulatory challenges to protect the ecosystem–a review
S Sivalingam, PG Priya, DS Lakshmi, STG Srimath
Environmental Science: Atmospheres 4 (12), 1331-1351 , 2024
2024
Citations: 5
Industrial biomass waste as an economical, potential adsorbent for removing the Bismarck Brown R dye and zinc metal ions from effluents
S Sivalingam, A Sowmiya
Environmental Science: Advances 3, 732-750 , 2024
2024
Citations: 8
Coagulation Study on Extracted Algal Alginate from Red Algae as Natural Coagulant for Remediation of Textile Dye Congo Red
S Sivalingam, V Gopal
Environment and Natural Resources Journal 21 (2), 90-101 , 2023
2023
Citations: 6
Comprehensive analysis and process simulation of biodiesel production from biomass sources
E E, S A, S Sivalingam
Indian Journal of Chemical Technology 30, 623-633 , 2023
2023
Citations: 6
Efficient removal of magenta dye from water by both natural and chemical coagulants
S Sivalingam, V Gopal, V Adichakkravarthy
Rasayan J. Chem. 16 (1), 307-311 , 2023
2023
Citations: 4
Efficient removal of hexavalent chromium ions from simulated wastewater by functionalized anion exchange resin: Process optimization, isotherm and kinetic studies
J Leonard, S Sivalingam, RV Srinadh, S Mishra
Environmental Chemistry and Ecotoxicology 5, 98-107 , 2023
2023
Citations: 52
Preparation of carboxymethyl cellulose from Musa paradisiaca pseudo stem using an alkaline treatment
V Gopal, DD Dharmarajan, S Sivalingam
Nature Environment and Pollution Technology 5, 2323-2327 , 2022
2022
Citations: 4
Rice husk ash derived nanocrystalline ZSM-5 for highly efficient removal of a toxic textile dye
S Sivalingam, S Sen
Journal of Materials Research and Technology 9 (6), 14853-14864 , 2020
2020
Citations: 64
An ultra-fast non-conventional waste management protocol to recycle of industrial fly ash into zeolite X
S Sivalingam, S Sen
Environmental Science and Pollution Research 26 (34), 34693-34701 , 2019
2019
Citations: 20

MOST CITED SCHOLAR PUBLICATIONS

Optimization of synthesis parameters and characterization of coal fly ash derived microporous zeolite X
S Sivalingam, S Sen
Applied Surface Science 455, 903-910 , 2018
2018
Citations: 108
Efficient removal of textile dye using nanosized fly ash derived zeolite-x: kinetics and process optimization study.
S Sivalingam, S Sen
J Taiwan Inst Chem Eng 96: 305–314 , 2019
2019
Citations: 84
Efficient sono-sorptive elimination of methylene blue by fly ash-derived nano-zeolite X: process optimization, isotherm and kinetic studies
S Sivalingam, T Kella, M Maharana, S Sen
Journal of Cleaner Production 208, 1241-1254 , 2019
2019
Citations: 80
Rice husk ash derived nanocrystalline ZSM-5 for highly efficient removal of a toxic textile dye
S Sivalingam, S Sen
Journal of Materials Research and Technology 9 (6), 14853-14864 , 2020
2020
Citations: 64
Rapid ultrasound assisted hydrothermal synthesis of highly pure nanozeolite X from fly ash for efficient treatment of industrial effluent
S Sivalingam, S Sen
Chemosphere 210, 816-823 , 2018
2018
Citations: 62
Efficient removal of hexavalent chromium ions from simulated wastewater by functionalized anion exchange resin: Process optimization, isotherm and kinetic studies
J Leonard, S Sivalingam, RV Srinadh, S Mishra
Environmental Chemistry and Ecotoxicology 5, 98-107 , 2023
2023
Citations: 52
Valorization of coal fly ash into nanozeolite by sonication-assisted hydrothermal method
S Sivalingam, S Sen
Journal of environmental management 235, 145-151 , 2019
2019
Citations: 39
Swift sono-hydrothermal synthesis of pure NaX nanocrystals with improved sorption capacity from industrial resources
S Sivalingam, S Sen
Applied Surface Science 463, 190-196 , 2019
2019
Citations: 38
Sono-assisted adsorption of As (V) from water by rice-husk-ash-derived iron-modified mesoporous zeolite Y: A cradle-to-cradle solution to a problematic solid waste material
S Sivalingam, S Sen
Industrial & Engineering Chemistry Research 58 (31), 14073-14087 , 2019
2019
Citations: 22
An ultra-fast non-conventional waste management protocol to recycle of industrial fly ash into zeolite X
S Sivalingam, S Sen
Environmental Science and Pollution Research 26 (34), 34693-34701 , 2019
2019
Citations: 20
Chapter 4 - Environmental and health effects of acid rain
S Sivalingam, G Vishal, B Anush
Health and Environmental Effects of Ambient Air Pollution Volume 1: Air … , 2024
2024
Citations: 16
Industrial biomass waste as an economical, potential adsorbent for removing the Bismarck Brown R dye and zinc metal ions from effluents
S Sivalingam, A Sowmiya
Environmental Science: Advances 3, 732-750 , 2024
2024
Citations: 8
Chapter 5 - Environmental and health effects of global warming
S Sivalingam, A Harish, MR Selva
Health and Environmental Effects of Ambient Air Pollution Volume 1: Air … , 2024
2024
Citations: 7
Environmental and health effects of acid rain, in health and environmental effects of ambient air pollution
S Sivalingam, G Vishal, B Anush
Elsevier , 2024
2024
Citations: 6
Coagulation Study on Extracted Algal Alginate from Red Algae as Natural Coagulant for Remediation of Textile Dye Congo Red
S Sivalingam, V Gopal
Environment and Natural Resources Journal 21 (2), 90-101 , 2023
2023
Citations: 6
Comprehensive analysis and process simulation of biodiesel production from biomass sources
E E, S A, S Sivalingam
Indian Journal of Chemical Technology 30, 623-633 , 2023
2023
Citations: 6
Low-cost adsorbent from biomass for removal of Fe (II) and Mn (II) for water treatment: batch and column adsorption study
S Sivalingam, V Gopal
Chemical Papers 78 (8), 4891-4908 , 2024
2024
Citations: 5
Microplastics in Asia: overcoming sampling, analysis, and regulatory challenges to protect the ecosystem–a review
S Sivalingam, PG Priya, DS Lakshmi, STG Srimath
Environmental Science: Atmospheres 4 (12), 1331-1351 , 2024
2024
Citations: 5
Efficient removal of magenta dye from water by both natural and chemical coagulants
S Sivalingam, V Gopal, V Adichakkravarthy
Rasayan J. Chem. 16 (1), 307-311 , 2023
2023
Citations: 4
Preparation of carboxymethyl cellulose from Musa paradisiaca pseudo stem using an alkaline treatment
V Gopal, DD Dharmarajan, S Sivalingam
Nature Environment and Pollution Technology 5, 2323-2327 , 2022
2022
Citations: 4

Sivamani Sivalingam

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Scopus Publications

RECENT SCHOLAR PUBLICATIONS

MOST CITED SCHOLAR PUBLICATIONS