An analysis of agricultural solid waste management and its effect on government spending in Ibadan Metropolis of Oyo State, Nigeria

Okunola, SO; Amao, J. O.; Olarinde, Luke O.

doi:10.4314/jext.v5i1.2743

Cited by 3 publications

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“…With regards to agro-waste, they are residues or garbage from agriculture, especially crops that are of no value to either humans or animals. In Nigeria, agro-waste constitutes significantly to the solid waste generated in the country [2]. Thus, transforming these waste materials into viable products would not only help mitigate environmental issues arising from improper solid waste management but would also be beneficial to the industries.…”

Section: Introductionmentioning

confidence: 99%

Screening of Fungi From the Trichocomaceae Family (Aspergilli and Penicillia) in Production of Hexose Sugars From Agro-Waste

Omoruyi¹,

Irabor²

2023

JCSN

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As an alternative to crude oil, the production of hexose sugars from agro-waste may be viewed as an environmentally benign process for sustainable chemicals/fuels production. A range of high-value industrial chemicals and fuels can be accessed from biomass-derived hexose sugars. This work evaluated the production of hexose sugars from yam peels (agro-waste) via enzymatic hydrolysis using different fungi from the trichocomaceae family namely, Aspergillus niger, Aspergillus tamari, Pencillium citrinum, and Penicillium chrysogenum respectively. The agro-waste (yam peels) samples were inoculated directly with the respective fungi without any form of pre-treatment. Hexose yields of 8.75±0.07%, 8.10±0.07%, 2.75±0.25% and 2.75±0.25 were obtained for A. niger, A. tamari, P. citrinum, and P. chrysogenum respectively when the samples were sterilized for 20 minutes at 121oC. Under the same experimental conditions, the control sample gave a minimal yield of 1.50±0.35%. Regardless of the enzyme employed, the amount of hexose sugars produced increased steadily with an increase in sterilization time (40, 60, 80, and 100 minutes). Optimum hexose yields of 16.90±0.71%, 15.50±0.35%, 7.00±0.01%, 7.00±0.05% were recorded for A. niger, A. tamari, P. citrinum, and P. chrysogenum respectively at 100 minutes sterilization time. Generally, P. citrinum, and P. chrysogenum gave similar but low hexose yields while A.niger and A. tamari afforded high and distinct hexose yields. Amongst the different fungi screened, A. niger was the most efficient enzyme for the hydrolysis giving the highest hexose sugar yields under the different conditions employed. The performance of the different fungi was evaluated against three different concentrations (0.5M, 1.0 M, 1.5M) of HCl and H2SO4 acid-catalysed hydrolysis of the yam peels respectively. At 1.0 M concentrations HCl and H2SO4 respectively, the hexose yields of 6.40 ± 0.40 % and 7.60 ± 0.20% obtained were on par with those obtained for the enzymes P. citrinum (7.00±0.01%) and P. chrysogenum (7.00±0.05%) after 100 minutes sterilization time. Regardless of acid concentrations, A. niger, and A. tamari enzymes were more effective for the hydrolysis than the HCl and H2SO4 acid-catalysed process with A. niger being the most effective for the hydrolysis. Therefore, a combination of the A-niger and any heterogenous green catalyst is a promising strategy for further transformation of hexose sugars obtained from agro-wastes to higher value chemicals like levulinic acid in a one-pot synthesis. The extended sterilization time may also be a suitable pre-treatment alternative to mineral acids.

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Section: Introductionmentioning

confidence: 99%

Screening of Fungi From the Trichocomaceae Family (Aspergilli and Penicillia) in Production of Hexose Sugars From Agro-Waste

Omoruyi¹,

Irabor²

2023

JCSN

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Economic and Environmental Effects of Solid Waste Management in Ibadan Metropolis of Oyo State, Nigeria

Oguntayo¹

2013

Journal of Environmental Conservation Research

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Evaluation of Solid Waste Generation, Categories and Disposal Options in Developing Countries: A Case Study of Nigeria

Babayemi¹,

Dauda²

2010

Journal of Applied Sciences and Environmental Management

143

122

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ABSTRACT:The quantity and generation rate of solid wastes in Nigeria have increased at an alarming rate over the years with lack of efficient and modern technology for the management of the wastes. The generation rate, collection and disposal of solid wastes are functions of several factors which if well considered and appropriated could bring the desired solution to the waste management problems in Nigeria. The quantity and rate of solid waste generation in several cities in Nigeria, factors influencing the generation, solid waste types and categories, collection, disposal, reuse and recycling, and environmental problems were investigated in this study. The results indicated large generation at high rate without a corresponding efficient technology to manage the wastes. Of 201 respondents to questionnaire in Abeokuta, 35.8% used waste collection services, 64.2% used other waste disposal options, 16.4% used both, 68.7% and 58.7% were aware of waste collection service and waste management regulations, respectively; while 28.4% separated their solid wastes at source. @ JASEM

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An analysis of agricultural solid waste management and its effect on government spending in Ibadan Metropolis of Oyo State, Nigeria

Cited by 3 publications

References 0 publications

Screening of Fungi From the Trichocomaceae Family (Aspergilli and Penicillia) in Production of Hexose Sugars From Agro-Waste

Screening of Fungi From the Trichocomaceae Family (Aspergilli and Penicillia) in Production of Hexose Sugars From Agro-Waste

Economic and Environmental Effects of Solid Waste Management in Ibadan Metropolis of Oyo State, Nigeria

Evaluation of Solid Waste Generation, Categories and Disposal Options in Developing Countries: A Case Study of Nigeria

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