1
|
Berhe SG, Seid A, Tsegay BA, Sato S, Lule GY. Effect of Charcoal on the Quality of Vermicompost Produced With Water Hyacinth and Cow Manure. ScientificWorldJournal 2025; 2025:1086347. [PMID: 40166650 PMCID: PMC11957873 DOI: 10.1155/tswj/1086347] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2024] [Accepted: 02/28/2025] [Indexed: 04/02/2025] Open
Abstract
The significance of water hyacinth (Pontederia crassipes (C. Mart.) Solms (Pontederiaceae) vermicomposting lies in its ability to effectively manage its invasiveness while also improving soil fertility and supporting sustainable agricultural practices. This study evaluates the effects of charcoal addition on the composting followed by the vermicomposting of water hyacinth (WH) and cow manure, focusing on the growth, reproduction, and survival of Eisenia fetida earthworms and the quality of the resulting vermicompost. The treatments included WH and cow manure (2:1) with 7.5% charcoal (T1), 5% charcoal (T2), and without charcoal (T3). Composting (30 days) followed by vermicomposting (60 days) was conducted in a controlled greenhouse environment. Samples were collected biweekly to analyze temperature, moisture, pH, electrical conductivity, total nitrogen, total available phosphorous, and total potassium contents, vermicompost yield, and earthworm growth parameters throughout the process. Results showed that T1 and T2 significantly improved earthworm weight (8.23-16.0%), number of earthworms (65.0-69.0%), cocoon production (37.0-49.0%), and hatchling count (49.0-77.6%), compared to T3 (control). Also, T1 and T2 increased pH (4.30-5.75%), total nitrogen (53.6-62.5%), total available phosphorus (61.6-117%), and total potassium (47.5-71.3%) and reduced electrical conductivity (9.91%), total organic carbon (17.9-42.1%), carbon: nitrogen ratio (46.5-64.4%), and vermicompost mass (22.0-28.3%) at the end of the vermicomposting period, compared to T3. Moreover, T1 and T2 exhibited significantly higher lettuce seed germination (92.4-93.5%), germination index (76.2-80.4%), shoot elongation (46.0-92.5%), and root elongation (9.00-15.0%), compared to T3. However, in most of the results, there was no significant difference between T1 and T2. This finding suggests that the use of T2 (5.00%) charcoal addition enhances vermicompost quality to optimal maturity and stability.
Collapse
Affiliation(s)
- Solomon Girmay Berhe
- Department of Biology, Science College, Bahir Dar University, Bahir Dar, Ethiopia
- College of Agriculture and Environmental Science, Bahir Dar University, Bahir Dar, Ethiopia
| | - Ali Seid
- Department of Biology, Science College, Bahir Dar University, Bahir Dar, Ethiopia
| | - Berhanu Abraha Tsegay
- Department of Biology, College of Natural and Computational Science, Raya University, Maichew, Ethiopia
| | - Shinjiro Sato
- Department of Science & Engineering for Sustainable Innovation, Soka University, Soka, Japan
| | - Getahun Yemata Lule
- Department of Biology, Science College, Bahir Dar University, Bahir Dar, Ethiopia
| |
Collapse
|
2
|
Katchali M, Richard E, Tonnang HEZ, Tanga CM, Beesigamukama D, Senagi K. Mathematical and computational modeling for organic and insect frass fertilizer production: A systematic review. PLoS One 2025; 20:e0292418. [PMID: 39854538 PMCID: PMC11760587 DOI: 10.1371/journal.pone.0292418] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Accepted: 09/26/2024] [Indexed: 01/26/2025] Open
Abstract
Organic fertilizers have been identified as a sustainable agricultural practice that can enhance productivity and reduce environmental impact. Recently, the European Union defined and accepted insect frass as an innovative and emerging organic fertilizer. In the wider domain of organic fertilizers, mathematical and computational models have been developed to optimize their production and application conditions. However, with the advancement in policies and regulations, modelling has shifted towards efficiencies in the deployment of these technologies. Therefore, this paper reviews and critically analyzes the recent developments in the mathematical and computation modeling that have promoted various organic fertilizer products including insect frass. We reviewed a total of 35 studies and discussed the methodologies, benefits, and challenges associated with the use of these models. The results show that mathematical and computational modeling can improve the efficiency and effectiveness of organic fertilizer production, leading to improved agricultural productivity and reduced environmental impact. Mathematical models such as simulation, regression, dynamics, and kinetics have been applied while computational data driven machine learning models such as random forest, support vector machines, gradient boosting, and artificial neural networks have also been applied as well. These models have been used in quantifying nutrients concentration/release, effects of nutrients in agro-production, and fertilizer treatment. This paper also discusses prospects for the use of these models, including the development of more comprehensive and accurate models and integration with emerging technologies such as Internet of Things.
Collapse
Affiliation(s)
- Malontema Katchali
- Institute for Basic Sciences, Technology and Innovation, Pan African University, Kenya
- Data Management, Modelling and Geo-Information Unit, International Centre of Insect Physiology and Ecology, Kenya
| | - Edward Richard
- Institute for Basic Sciences, Technology and Innovation, Pan African University, Kenya
| | - Henri E. Z. Tonnang
- Data Management, Modelling and Geo-Information Unit, International Centre of Insect Physiology and Ecology, Kenya
| | - Chrysantus M. Tanga
- Data Management, Modelling and Geo-Information Unit, International Centre of Insect Physiology and Ecology, Kenya
| | - Dennis Beesigamukama
- Data Management, Modelling and Geo-Information Unit, International Centre of Insect Physiology and Ecology, Kenya
| | - Kennedy Senagi
- Data Management, Modelling and Geo-Information Unit, International Centre of Insect Physiology and Ecology, Kenya
| |
Collapse
|
3
|
Wang J, Bao F, Wei H, Zhang Y. Screening of cellulose-degrading bacteria and optimization of cellulase production from Bacillus cereus A49 through response surface methodology. Sci Rep 2024; 14:7755. [PMID: 38565929 PMCID: PMC10987593 DOI: 10.1038/s41598-024-58540-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2023] [Accepted: 04/01/2024] [Indexed: 04/04/2024] Open
Abstract
Cellulose-degrading microorganisms hold immense significance in utilizing cellulose resources efficiently. The screening of natural cellulase bacteria and the optimization of fermentation conditions are the hot spots of research. This study meticulously screened cellulose-degrading bacteria from mixed soil samples adopting a multi-step approach, encompassing preliminary culture medium screening, Congo red medium-based re-screening, and quantification of cellulase activity across various strains. Particularly, three robust cellulase-producing strains were identified: A24 (MT740356.1 Brevibacillus borstelensis), A49 (MT740358.1 Bacillus cereus), and A61 (MT740357.1 Paenibacillus sp.). For subsequent cultivation experiments, the growth curves of the three obtained isolates were monitored diligently. Additionally, optimal CMCase production conditions were determined, keeping CMCase activity as a key metric, through a series of single-factor experiments: agitation speed, cultivation temperature, unit medium concentration, and inoculum volume. Maximum CMCase production was observed at 150 rpm/37 °C, doubling the unit medium addition, and a 5 mL inoculation volume. Further optimization was conducted using the selected isolate A49 employing response surface methodology. The software model recommended a 2.21fold unit medium addition, 36.11 °C temperature, and 4.91 mL inoculant volume for optimal CMCase production. Consequently, three parallel experiments were conducted based on predicted conditions consistently yielding an average CMCase production activity of 15.63 U/mL, closely aligning with the predicted value of 16.41 U/mL. These findings validated the reliability of the model and demonstrated the effectiveness of optimized CMCase production conditions for isolate A49.
Collapse
Affiliation(s)
- Jinjun Wang
- Key Laboratory of Arable Land Quality Monitoring and Evaluation, Ministry of Agriculture and Rural Affairs, Yangzhou University, Yangzhou, 225009, Jiangsu, China.
- College of Environmental Science and Engineering, Yangzhou University, Yangzhou, 225127, Jiangsu, China.
| | - Fei Bao
- College of Environmental Science and Engineering, Yangzhou University, Yangzhou, 225127, Jiangsu, China
| | - Huixian Wei
- College of Environmental Science and Engineering, Yangzhou University, Yangzhou, 225127, Jiangsu, China
| | - Yang Zhang
- Key Laboratory of Arable Land Quality Monitoring and Evaluation, Ministry of Agriculture and Rural Affairs, Yangzhou University, Yangzhou, 225009, Jiangsu, China
- College of Environmental Science and Engineering, Yangzhou University, Yangzhou, 225127, Jiangsu, China
| |
Collapse
|
4
|
Dümenci NA, Temel FA, Turan NG. Role of different natural materials in reducing nitrogen loss during industrial sludge composting: Modelling and optimization. BIORESOURCE TECHNOLOGY 2023; 385:129464. [PMID: 37429554 DOI: 10.1016/j.biortech.2023.129464] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2023] [Revised: 07/03/2023] [Accepted: 07/05/2023] [Indexed: 07/12/2023]
Abstract
In this study, the effects of pumice, expanded perlite, and expanded vermiculite on nitrogen loss were examined for industrial sludge composting using the Box-Behnken experimental design. The independent factors and their levels were selected as amendment type, amendment ratio, and aeration rate, and codded as x1, x2, and x3 at 3 levels (low, center, and high). The statistical significance of independent variables and their interactions were determined at 95% confidence limits by Analysis of Variance. The quadratic polynomial regression equation produced to predict the responses was solved and the optimum values of the variables were predicted by analyzing the three-dimensional response surfaces plots. The optimum conditions for minimum nitrogen loss by the regression model were as pumice of amendment type, 40% of amendment ratio, and 6 L/min of aeration rate. In this study, it was observed that time-consuming and laborious laboratory work can be minimized with the Box-Behnken experimental design.
Collapse
Affiliation(s)
- Nurdan Aycan Dümenci
- Department of Environmental Engineering, Faculty of Engineering, Ondokuz Mayıs University, Samsun 55200, Turkey
| | - Fulya Aydın Temel
- Department of Industrial Engineering, Faculty of Engineering, Giresun University, Giresun 28200, Turkey.
| | - Nurdan Gamze Turan
- Department of Environmental Engineering, Faculty of Engineering, Ondokuz Mayıs University, Samsun 55200, Turkey
| |
Collapse
|
5
|
Udume OA, Abu GO, Stanley HO, Vincent-Akpu IF, Momoh Y, Eze MO. Biostimulation of Petroleum-Contaminated Soil Using Organic and Inorganic Amendments. PLANTS (BASEL, SWITZERLAND) 2023; 12:plants12030431. [PMID: 36771516 PMCID: PMC9921818 DOI: 10.3390/plants12030431] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Revised: 01/03/2023] [Accepted: 01/10/2023] [Indexed: 06/01/2023]
Abstract
The most common approaches for the in-situ bioremediation of contaminated sites worldwide are bioaugmentation and biostimulation. Biostimulation has often proved more effective for chronically contaminated sites. This study examined the effectiveness of optimized water hyacinth compost in comparison with other organic and inorganic amendments for the remediation of crude oil-polluted soils. Water hyacinth was found to be rich in nutrients necessary to stimulate microbial growth and activity. An organic geochemical analysis revealed that all amendments in this study increased total petroleum hydrocarbon (TPH) biodegradation by ≥75% within 56 days, with the greatest biodegradation (93%) occurring in sterilized soil inoculated with optimized water hyacinth compost. This was followed by polluted soil amended with a combination of spent mushroom and water hyacinth composts (SMC + WH), which recorded a TPH biodegradation of 89%. Soil amendment using the inorganic fertilizer NPK (20:10:10) resulted in 86% TPH biodegradation. On the other hand, control samples (natural attenuation) recorded only 4% degradation. A molecular analysis of residual polycyclic aromatic hydrocarbons (PAHs) showed that the 16 PAHs designated by the US EPA as priority pollutants were either completely or highly degraded in the combined treatment (SMC + WH), indicating the potential of this amendment for the environmental remediation of soils contaminated with recalcitrant organic pollutants.
Collapse
Affiliation(s)
- Ogochukwu A. Udume
- Department of Microbiology, Faculty of Science, University of Port Harcourt, Port Harcourt 500004, Rivers State, Nigeria
| | - Gideon O. Abu
- Department of Microbiology, Faculty of Science, University of Port Harcourt, Port Harcourt 500004, Rivers State, Nigeria
| | - Herbert O. Stanley
- Department of Microbiology, Faculty of Science, University of Port Harcourt, Port Harcourt 500004, Rivers State, Nigeria
| | - Ijeoma F. Vincent-Akpu
- Department of Animal and Environmental Biology, Faculty of Science, University of Port Harcourt, Port Harcourt 500004, Rivers State, Nigeria
| | - Yusuf Momoh
- Department of Environmental Engineering, Faculty of Engineering, University of Port Harcourt, Port Harcourt 500004, Rivers State, Nigeria
| | - Michael O. Eze
- Department of Genomic and Applied Microbiology and Göttingen Genomics Laboratory, Georg-August University of Göttingen, 37077 Göttingen, Germany
- Bioinstrumentation and BioMEMS Laboratory, Department of Mechanical and Aerospace Engineering, University of California, Davis, CA 95616, USA
| |
Collapse
|