DIVAKAR PAMANJI

@mtitech.edu.in

Assistant Professor in Department of Civil Engineering
Mothre Theresa Institute of Engineering and Technology

DIVAKAR PAMANJI


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https://researchid.co/divakarpamanji

EDUCATION

M Tech in Environmental Engineering
B Tech in Civil Engineering
Diploma in Civil Engineering

RESEARCH, TEACHING, or OTHER INTERESTS

Environmental Engineering, Civil and Structural Engineering
5

Scopus Publications

12

Scholar Citations

2

Scholar h-index

Scopus Publications

  • A sustainable approach to enhance biodegradability of recycled LDPE with starch biofillers derived from potato peels and rice husk ash*
    Deepshikha Datta, Mehulee Patra, Divakar Pamanji, Gokulan Ravindiran, Bimal Das
    Indian Chemical Engineer, 2025
    This study investigates the potential of using starch derived from potato peels and rice husks as biofiller for the production of biodegradable plastics. Starch was extracted from potato peels and modified using phthalic anhydride, formamide and potassium acetate to ensure its homogeneous dispersion into the low-density polyethylene (LDPE) matrix. The modified potato peel starch and rice husk ash were characterised using various techniques such as SEM, TEM, FTIR, XRD and were blended with recycled LDPE to enhance its biodegradability for making it an applicable environmental friendly packaging material. The quantity of the biofiller was varied from 4 to 12 g while rice husk ash content was kept constant (0.6 g). The addition of the biofiller reduced the tensile strength, tear strength and transparency of the film with an increase in haze %, weight loss both in garden soil and vegetable waste environment indicating the enhancement in biodegradability of the produced blend. Considering the applicability constrain biodegradable blend containing 20% starch was considered as the best one having tensile strength of approximately 10.42 MPa, tear strength 69.4 N, weight loss percentage of 13.29% in garden soil and 11.34% in vegetable waste when studied for a period of 360 days. Modification of starch has however increased both the mechanical (tensile strength – 12.628 MPa, tear strength – 80.47 N) and biodegradability (weight loss percentage of 15.19% in garden soil and 14.45% in vegetable waste) of the films when studied under the same conditions for the sample containing 30% starch in the matrix.
  • Drinking water treatment through Optimising Phosphate Coagulation collected from four villages in Srikakulam, India: a Response Surface Methodology approach
    Deepshikha Datta, Divakar Pamanji, Gokulan Ravindiran, Sudipta Kumar Das, Priyasi Bhangar, Bimal Das
    Indian Chemical Engineer, 2025
    The drinking water quality is highly affected by industrialisation and by natural geographical features of the region. This work highlights on the quality survey and treatment of drinking water collected from four villages (Kalyanipeta, Kesavadasupuram, Arinam Akkivalasa, and Chilakapalem) near Nagarjuna Agrichem Limited in Srikakulam district, Andhra Pradesh. Physicochemical parameters of the samples were analysed. The presence of phosphates in the samples (3.15 mg/L P) were found to be above the permissible limits (1 mg/L P) which required instant treatment by coagulation process. Various influencing factors like temperature, dosage, mixing speed, and mixing time were considered for optimization of the process. The statistical experimental design was done using central composite approach of response surface methodology to optimise phosphate removal via coagulation and flocculation technique. An optimised removal of phosphates was determined to be 79.5% and 76.06% at a temperature of 27°C and 28°C, dosage of 13.412 and 14.906 mg/L, mixing speed of 91 and 78 rpm, and mixing time of 14.25 and 11.62 min for coagulants ferric chloride and aluminium sulphate respectively. Ferric chloride was found to be a better coagulant with a removal efficiency of 79.5% and the treated water contained 0.645 mg/L of phosphate.
  • Isolation of Nanocellulosic Fibrils from Allium cepa L. Skin Biowaste Food Residues: Extraction and Characterization
    Deepshikha Datta, Divakar Pamanji, Bimal Das
    Journal of the Institution of Engineers India Series E, 2023
  • Production and optimisation of biodegradable LDPE packaging films strengthened with inorganic filler through response surface methods using central composite design
    Deepshikha Datta, Divakar Pamanji, Bimal Das
    Indian Chemical Engineer, 2023
    The current study emphasis on the optimisation of degradation of starch-blend LDPE films using nanosilica/modified nanosilica as a property-enhancing filler in order to establish an optimal composition used as a biodegradable packaging film. Weight loss and tensile and tear strength loss were used to determine the individual influence of the essential parameters defining degradability. The Central Composite Design (CCD) approach of Response Surface Methodology was used to optimise the process parameters. The obtained equation for film degradation is quadratic in nature and significant for the process, according to an ANOVA (analysis of variance) study. The addition of starch and modified nanosilica content in the matrix by 60% and above 0.6 g (1.5%) reduces the tensile and tear strength from 19.057 N/mm2 to 3.64 N/mm2 and 189.041 N/mm to 27.36 N/mm respectively, however increases the Young's modulus and stiffness to 582.76 MPa and 33654.62 N/m. The optimum composition of starch, LDPE and modified nanosilica was found to be 32, 8 and 0.6 g, respectively, showing an enhanced stiffness, tear strength and Young’s modulus of 29591.84 N/m, 155.5 N/mm and 464.25 N/mm2 along with induced biodegradability of 13.08% under garden soil and 12.07% under vegetable waste.
  • Water quality survey on potable water through analysis of physicochemical parameters from various sources in rajam
    Divakar Pamanji, P. Satya Sagar, Deepshikha Datta
    Aip Conference Proceedings, 2021
    The scarcity of quantity and quality of drinking water is increasing because of industrialization and population abundance etc. In this work, we performed the water quality survey at four villages named Kalyanipeta – S1, Kesavadasupuram – S2, Arinam Akkivalasa – S3, Chilakapalem – S4, present around agrochemical industry, by collecting fifteen water samples from drinking water taps, hand pumps, and bore wells. The samples were transported to the laboratory for physicochemical characterization, including conductivity, pH, turbidity, TDS, alkalinity, hardness, chlorides, fluorides, DO, BOD, COD, nitrates, nitrites, phosphates. The results express an abundance of phosphates in the range of 1.70 mg/L P to 3.15 mg/L P, the hardness and alkalinity found above the acceptable limit as per BIS. Electrical conductivity and total dissolved solids have fluctuated above and below the permissible limits range of 900 to 1440 µS/cm and 539 to 870 mg/L. The nitrites found at three samples named S1-1, S3-2, and S4-4, which is above 0.1 mg/L and below one mg/L as NO2-. The presence of phosphates in groundwater has increased due to the utilization of chemical fertilizers in agriculture or maybe effluent discharges into groundwater from the agrochemical industry.

RECENT SCHOLAR PUBLICATIONS

  • Recycling of Polymer Nanocomposites in Renewable Energy Systems
    J Panda, K Mazumder, S Biswas, SM Alom, S Parvin, S Sarkar, D Pamanji, ...
    Sustainable and Natural Polymers: Innovations in Clean Energy, 189-220 , 2026
    2026
  • Synthesis and Fabrication Techniques of Polymer Nanocomposites
    D Datta, J Panda, K Mazumder, S Biswas, SM Alom, S Parvin, E Datta, ...
    Sustainable and Natural Polymers: Innovations in Clean Energy, 1-29 , 2026
    2026
  • A sustainable approach to enhance biodegradability of recycled LDPE with starch biofillers derived from potato peels and rice husk ash
    D Datta, M Patra, D Pamanji, G Ravindiran, B Das
    Indian Chemical Engineer 67 (1), 49-68 , 2025
    2025
    Citations: 2
  • Drinking water treatment through Optimising Phosphate Coagulation collected from four villages in Srikakulam, India: a Response Surface Methodology approach
    BD Deepshikha Datta,Divakar Pamanji,Gokulan Ravindiran,Sudipta Kumar Das ...
    Indian Chemical Engineer, 1-15 , 2024
    2024
    Citations: 1
  • Isolation of Nanocellulosic Fibrils from Allium cepa L. Skin Biowaste Food Residues: Extraction and Characterization
    D Datta, D Pamanji, B Das
    Journal of The Institution of Engineers (India): Series E 104 (1), 141-151 , 2023
    2023
    Citations: 5
  • Production and optimisation of biodegradable LDPE packaging films strengthened with inorganic filler through response surface methods using central composite design
    D Datta, D Pamanji, B Das
    Indian Chemical Engineer 65 (2), 196-212 , 2023
    2023
    Citations: 1
  • Water quality survey on potable water through analysis of physicochemical parameters from various sources in Rajam
    D Pamanji, PS Sagar, D Datta
    AIP Conference Proceedings 2417 (1), 020010 , 2021
    2021
    Citations: 3
  • An Experimental Study on the Strength Properties of Standard Concrete by Partial Replacement of Cement with Calcium Bentonite and Alccofine.
    M Reddy, P Divakar
    IUP Journal of Structural Engineering 13 (4) , 2020
    2020

MOST CITED SCHOLAR PUBLICATIONS

  • Isolation of Nanocellulosic Fibrils from Allium cepa L. Skin Biowaste Food Residues: Extraction and Characterization
    D Datta, D Pamanji, B Das
    Journal of The Institution of Engineers (India): Series E 104 (1), 141-151 , 2023
    2023
    Citations: 5
  • Water quality survey on potable water through analysis of physicochemical parameters from various sources in Rajam
    D Pamanji, PS Sagar, D Datta
    AIP Conference Proceedings 2417 (1), 020010 , 2021
    2021
    Citations: 3
  • A sustainable approach to enhance biodegradability of recycled LDPE with starch biofillers derived from potato peels and rice husk ash
    D Datta, M Patra, D Pamanji, G Ravindiran, B Das
    Indian Chemical Engineer 67 (1), 49-68 , 2025
    2025
    Citations: 2
  • Drinking water treatment through Optimising Phosphate Coagulation collected from four villages in Srikakulam, India: a Response Surface Methodology approach
    BD Deepshikha Datta,Divakar Pamanji,Gokulan Ravindiran,Sudipta Kumar Das ...
    Indian Chemical Engineer, 1-15 , 2024
    2024
    Citations: 1
  • Production and optimisation of biodegradable LDPE packaging films strengthened with inorganic filler through response surface methods using central composite design
    D Datta, D Pamanji, B Das
    Indian Chemical Engineer 65 (2), 196-212 , 2023
    2023
    Citations: 1
  • Recycling of Polymer Nanocomposites in Renewable Energy Systems
    J Panda, K Mazumder, S Biswas, SM Alom, S Parvin, S Sarkar, D Pamanji, ...
    Sustainable and Natural Polymers: Innovations in Clean Energy, 189-220 , 2026
    2026
  • Synthesis and Fabrication Techniques of Polymer Nanocomposites
    D Datta, J Panda, K Mazumder, S Biswas, SM Alom, S Parvin, E Datta, ...
    Sustainable and Natural Polymers: Innovations in Clean Energy, 1-29 , 2026
    2026
  • An Experimental Study on the Strength Properties of Standard Concrete by Partial Replacement of Cement with Calcium Bentonite and Alccofine.
    M Reddy, P Divakar
    IUP Journal of Structural Engineering 13 (4) , 2020
    2020