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Characterization of floral waste as potential candidates for compost and biofuel production

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Abstract

Floral waste (FW) forms the most overlooked part of municipal solid waste (MSW) in India and is one of the major sources of water pollution due to the traditional method of disposing of the FW. The current study focuses on the characterization of FW samples based on proximate, ultimate, elemental, morphological, and biochemical analyses. The samples had moisture content (MC) ranging from 6.1 to 12.86%, whereas volatile matter (VM) and ash content (AC) were in the range of 79.99–88.68% and 4.35–9.79%, respectively. NPK values and elemental analysis suggest that the FW samples are also promising feedstock for compost production without any adverse effect on the environment. However, FW samples were found to be acidic in nature (3.88–5.47) with a variable C/N ratio, ranging from 11.82 to 38.26. Morphological studies show that the FW samples have heterogeneous surfaces. FW samples were also found to be high in cellulose (22.31–37.22%) and hemicellulose (19.19–38.89%) content and low in lignin content (1.76–4.54%). Stoichiometric methane potential (SMP) and stoichiometric ethanol potential (SEP) of FW were calculated based on the ultimate and biochemical analyses, respectively of FW. SMP was found to be in the range of 0.170–0.434 L CH4 g−1 VS, whereas SEP was found in the range of 0.433–0.582 Lg−1. The results exhibit that FW can be used as a potential candidate for bioenergy and compost production.

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Data availability

All data generated during this study are included in this manuscript.

Abbreviations

FW:

Floral waste

MSW:

Municipal solid waste

MC:

Moisture content

VM:

Volatile matter

AC:

Ash content

SMP:

Stoichiometric methane potential

SEP:

Stoichiometric ethanol potential

LCB:

Lignocellulosic biomass

FC:

Fixed carbon

HR:

Hibiscus

OM:

Orange marigold

YM:

Yellow marigold

PA:

Frangipani

WK:

White kaner

PR:

Pink rose

RR:

Red rose

YC:

Yellow chrysanthemum

OC:

Orange chrysanthemum

CJ:

Crepe jasmine

SL:

Spider lily

HHV:

Higher heating value

SEM:

Scanning electron microscope

NDF:

Neutral detergent fiber

ADF:

Acid detergent fiber

ADL:

Acid detergent lignin

VS:

Volatile solids

ICP-OES:

Inductively coupled plasma–optical emission spectrophotometer

ND:

Not detected

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Acknowledgements

We are thankful to the Director of CSIR-National Environmental Engineering Research Institute, Nagpur, India, for providing the necessary facilities and funds.

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Authors and Affiliations

  1. Environmental Impact and Sustainability Division, CSIR- National Environmental Engineering Research Institute, Nehru Marg, Nagpur, 440020, India

    Smita Dutta & M. Suresh Kumar

  2. Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India

    Smita Dutta & M. Suresh Kumar

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M. Suresh Kumar conceived and supervised the study whereas Smita Dutta collected the data, performed the analysis, and wrote the original manuscript. All the authors discussed and commented on the manuscript.

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Dutta, S., Kumar, M.S. Characterization of floral waste as potential candidates for compost and biofuel production. Biomass Conv. Bioref. (2022). https://doi.org/10.1007/s13399-022-02353-z

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