Pub Date : 2024-01-01DOI: 10.12911/22998993/174378
Jose Manuel Calderon Pincay, María Fernanda Pincay Cantos
A systematic review was conducted in this study with the aim of analyzing soil salinization in Latin America. Manuscripts published in the region over the past ten years in both English and Spanish that had undergone blind peer review in journals indexed in the databases of Copernicus Publications, Nature, Science Direct, Scielo
{"title":"Analysis of Soil Salinization as an Environmental Issue in Latin America","authors":"Jose Manuel Calderon Pincay, María Fernanda Pincay Cantos","doi":"10.12911/22998993/174378","DOIUrl":"https://doi.org/10.12911/22998993/174378","url":null,"abstract":"A systematic review was conducted in this study with the aim of analyzing soil salinization in Latin America. Manuscripts published in the region over the past ten years in both English and Spanish that had undergone blind peer review in journals indexed in the databases of Copernicus Publications, Nature, Science Direct, Scielo","PeriodicalId":15652,"journal":{"name":"Journal of Ecological Engineering","volume":"16 3","pages":""},"PeriodicalIF":1.3,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139127742","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-01-01DOI: 10.12911/22998993/174122
Adam Krajewski, K. Banasik, L. Hejduk
Predicting and estimating sediment yield from the catchment is crucial for the effective management of water resources and controlling soil erosion. Universal Soil Loss Equations (USLE) and their modifications have been appreciated and commonly applied among many methods. The idea of this work is to use the ESDAC database (a web platform hosting a series of pan-European and global datasets on soil erosion) to build the modified form of the USLE for the Zagożdzonka catchment, a small agricultural area located in central Poland. The calculated sediment yield is compared with the one determined based on the reservoir survey. The conducted analyses show that the average annual suspended sediment yield from the study catchment estimated using the MUSLE equation accounts for 201 Mg and is close to that determined based on the reservoir survey, i.e., 248 Mg. However, MUSLE, with the initially proposed parameters, will overpredict sediment transport at the study site. The ESDAC database may support local studies concerning soil erosion and sediment transport. The research is helpful for policymakers, planners, and engineers.
{"title":"Estimation of Long-Term Suspended Sediment Yield from a Small Agricultural Catchment","authors":"Adam Krajewski, K. Banasik, L. Hejduk","doi":"10.12911/22998993/174122","DOIUrl":"https://doi.org/10.12911/22998993/174122","url":null,"abstract":"Predicting and estimating sediment yield from the catchment is crucial for the effective management of water resources and controlling soil erosion. Universal Soil Loss Equations (USLE) and their modifications have been appreciated and commonly applied among many methods. The idea of this work is to use the ESDAC database (a web platform hosting a series of pan-European and global datasets on soil erosion) to build the modified form of the USLE for the Zagożdzonka catchment, a small agricultural area located in central Poland. The calculated sediment yield is compared with the one determined based on the reservoir survey. The conducted analyses show that the average annual suspended sediment yield from the study catchment estimated using the MUSLE equation accounts for 201 Mg and is close to that determined based on the reservoir survey, i.e., 248 Mg. However, MUSLE, with the initially proposed parameters, will overpredict sediment transport at the study site. The ESDAC database may support local studies concerning soil erosion and sediment transport. The research is helpful for policymakers, planners, and engineers.","PeriodicalId":15652,"journal":{"name":"Journal of Ecological Engineering","volume":"8 4","pages":""},"PeriodicalIF":1.3,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139129629","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-12-25DOI: 10.12911/22998993/177594
B. J. Priatmadi, M. Septiana, Ronny Mulyawan, Hairil Ifansyah, Abdul Haris, A. Hayati, Muhammad Mahbub, A. R. Saidy
The utilization of nitrogen (N) fertilizer in peatlands, with the aim of increasing crop growth and production, is also reported to increase carbon dioxide (CO 2 ) emissions. The application of coal fly ash (CFA) to soil may change soil physico-chemical characteristics, thereby influence carbon mineralization, but its effect on CO 2 production is not yet clear. Consequently, the purpose of this study was to quantify the CO 2 production of tropical peatlands that received N fertilizer and CFA. In the laboratory experiment, CFA equivalent to the application of 150 Mg·ha −1 in the field was added to peatlands with and without N fertilizer. These mixtures were then incubated at 70% water-filled pore space (WFPS) for 30 days at room temperature. Carbon mineralization was measured on a 5-day basis, while several chemical characteristics of treated peatlands, including pH, hot water-soluble C, exchangeable-Ca, -Mg, -Fe, and -Al were measured at the conclusion of the incubation period. This study identified that N fertilizer application increased the CO 2 production of tropical peatlands from 29.25 g·kg −1 to 37.12 g·kg −1 . Furthermore, the application of CFA on tropical peatlands reduced CO 2 production of tropical peatlands with and without N fertilizer. Decreasing the amount of hot water-soluble carbon from peatlands may account for the reduced CO 2 production of peatlands with CFA. The study also showed that exchangeable-Ca, -Mg, -Fe, and -Al increased in peatlands with CFA application, and these multivalent cations were also attributed to a reduction of CO 2 production. In conclusion, the negative effects of N fertilizer application on peatlands in increasing CO 2 emission may be reduced by the application of CFA.
据报道，在泥炭地使用氮（N）肥料以提高作物生长和产量，也会增加二氧化碳（CO 2）的排放。在土壤中施用粉煤灰（CFA）可能会改变土壤的物理化学特征，从而影响碳矿化，但其对二氧化碳产生的影响尚不明确。因此，本研究旨在量化施用氮肥和粉煤灰的热带泥炭地的二氧化碳产生量。在实验室实验中，向施用或未施用氮肥的泥炭地中添加了相当于在田间施用 150 兆克-公顷-1 的 CFA。然后将这些混合物在室温下以 70% 的充水孔隙度（WFPS）培养 30 天。每 5 天测量一次碳矿化度，同时在培养期结束时测量经处理泥炭地的一些化学特征，包括 pH 值、热水溶性碳、可交换钙、镁、铁和铝。这项研究发现，施用氮肥后，热带泥炭地的二氧化碳产生量从 29.25 g-kg -1 增加到 37.12 g-kg -1 。此外，在热带泥炭地施用 CFA 可减少施用或未施用氮肥的热带泥炭地的二氧化碳产生量。减少泥炭地的热水溶性碳量可能是施用 CFA 的泥炭地二氧化碳产生量减少的原因。研究还表明，施用 CFA 的泥炭地中可交换性钙、镁、铁和铝增加，这些多价阳离子也是二氧化碳产生量减少的原因。总之，施用 CFA 可减少施用氮肥对泥炭地增加二氧化碳排放量的负面影响。
{"title":"Reduction in Carbon Dioxide Production of Tropical Peatlands Under Nitrogen Fertilizer with Coal Fly Ash Application","authors":"B. J. Priatmadi, M. Septiana, Ronny Mulyawan, Hairil Ifansyah, Abdul Haris, A. Hayati, Muhammad Mahbub, A. R. Saidy","doi":"10.12911/22998993/177594","DOIUrl":"https://doi.org/10.12911/22998993/177594","url":null,"abstract":"The utilization of nitrogen (N) fertilizer in peatlands, with the aim of increasing crop growth and production, is also reported to increase carbon dioxide (CO 2 ) emissions. The application of coal fly ash (CFA) to soil may change soil physico-chemical characteristics, thereby influence carbon mineralization, but its effect on CO 2 production is not yet clear. Consequently, the purpose of this study was to quantify the CO 2 production of tropical peatlands that received N fertilizer and CFA. In the laboratory experiment, CFA equivalent to the application of 150 Mg·ha −1 in the field was added to peatlands with and without N fertilizer. These mixtures were then incubated at 70% water-filled pore space (WFPS) for 30 days at room temperature. Carbon mineralization was measured on a 5-day basis, while several chemical characteristics of treated peatlands, including pH, hot water-soluble C, exchangeable-Ca, -Mg, -Fe, and -Al were measured at the conclusion of the incubation period. This study identified that N fertilizer application increased the CO 2 production of tropical peatlands from 29.25 g·kg −1 to 37.12 g·kg −1 . Furthermore, the application of CFA on tropical peatlands reduced CO 2 production of tropical peatlands with and without N fertilizer. Decreasing the amount of hot water-soluble carbon from peatlands may account for the reduced CO 2 production of peatlands with CFA. The study also showed that exchangeable-Ca, -Mg, -Fe, and -Al increased in peatlands with CFA application, and these multivalent cations were also attributed to a reduction of CO 2 production. In conclusion, the negative effects of N fertilizer application on peatlands in increasing CO 2 emission may be reduced by the application of CFA.","PeriodicalId":15652,"journal":{"name":"Journal of Ecological Engineering","volume":"44 2","pages":""},"PeriodicalIF":1.3,"publicationDate":"2023-12-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139158432","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-12-01DOI: 10.12911/22998993/174091
Nazula Nutayla, Amin Rejo, R. Adhiguna
Coal mining is generally carried out through open pit mining methods which have an impact and become an obstacle to changes in the chemical, physical, and biological properties of the soil. Revegetation of reclaimed land is a priority in restoring ecosystems disrupted by mining activities. This study aims to assess the success of the direct planting method in accelerating the growth of Pterocarpus indicus plants in coal mining reclamation areas. Field data and observations are used to evaluate the growth of plants directly planted in reclaimed post-mining land. The growth parameters observed include plant height, stem diameter, and leaf count using both seedling and stem-cutting planting materials. The research results indicate that the direct planting method has a significant impact on accelerating the growth of Pterocarpus indicus plants. The plant height, diameter, and leaf count growth from the ANOVA test results showed a significant effect or significance at p<0.05 for the interaction between planting material, fertilizer, and dosage. The Duncan test results for the average plant height, stem diameter, and leaf count indicate the optimal use of bokashi fertilizer. The effective bokashi fertilizer dosage for each variable is 3 kg/plant - ing hole, resulting in a plant height of 102.31 cm; 3 kg/planting hole, resulting in a stem diameter of 24.26 cm; and 5 kg/planting hole, resulting in a leaf count of 41.32.
{"title":"Coal Post-Mining Reclamation Using Pterocarpus Indicus","authors":"Nazula Nutayla, Amin Rejo, R. Adhiguna","doi":"10.12911/22998993/174091","DOIUrl":"https://doi.org/10.12911/22998993/174091","url":null,"abstract":"Coal mining is generally carried out through open pit mining methods which have an impact and become an obstacle to changes in the chemical, physical, and biological properties of the soil. Revegetation of reclaimed land is a priority in restoring ecosystems disrupted by mining activities. This study aims to assess the success of the direct planting method in accelerating the growth of Pterocarpus indicus plants in coal mining reclamation areas. Field data and observations are used to evaluate the growth of plants directly planted in reclaimed post-mining land. The growth parameters observed include plant height, stem diameter, and leaf count using both seedling and stem-cutting planting materials. The research results indicate that the direct planting method has a significant impact on accelerating the growth of Pterocarpus indicus plants. The plant height, diameter, and leaf count growth from the ANOVA test results showed a significant effect or significance at p<0.05 for the interaction between planting material, fertilizer, and dosage. The Duncan test results for the average plant height, stem diameter, and leaf count indicate the optimal use of bokashi fertilizer. The effective bokashi fertilizer dosage for each variable is 3 kg/plant - ing hole, resulting in a plant height of 102.31 cm; 3 kg/planting hole, resulting in a stem diameter of 24.26 cm; and 5 kg/planting hole, resulting in a leaf count of 41.32.","PeriodicalId":15652,"journal":{"name":"Journal of Ecological Engineering","volume":" 14","pages":""},"PeriodicalIF":1.3,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138611188","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-12-01DOI: 10.12911/22998993/172423
Mohamed Benaddou, Hassan Hajjaj, Mohamed Diouri
Amid fodder shortages and environmental concerns in Morocco, this study explores a transformative livestock feed strategy. By combining olive pulp (OP) and wheat straw (WS) treated with Phanerochaete chrysosporium and Fusarium oxysporum, we enhance digestibility and sustainability. Five mixing ratios were examined: 100% OP (OP), 75% OP and 25% WS (MOP), 50% OP and 50% WS (OPWS), 25% OP and 75% WS (MWS), and 100% WS (WS). Fungal treatment and ratios influence cellulose-lignin dynamics. MOP increased cellulose (13.1), OP showed an initial decrease (-8.51, -5.88 for P. chrysosporium, F. oxysporum ), with cellulose rising from 4 to 8 weeks, then declining. Lignin degradation differed (P < 0.001), P. chrysosporium was efficient (24.22%±13.75 to 31.57% ± 20.65), MWS remarkable, and OPWS stable. Mixed substrates showed higher IVTD_imp (58.56% ± 16%, 54.18% ± 20%, 36.83% ± 18%), OP and WS lower (26.25% ± 11%, 14.43% ± 7.48%). Enhanced IVTD (4-12 weeks) seen, OPWS and MOP excelling, WS lower. In conclusion, this study unveils the potential of fungal-treated feed optimization through substrate composition and tailored treatment durations. By leveraging synergistic effects and optimizing treatment timelines, we enhance livestock feed sustainability while addressing waste management concerns. This comprehensive approach holds promise for achieving both nutritional and environmental goals in livestock production.
{"title":"Fungal Treatment and Wheat Straw Blend for Enhanced Animal Feed from Olive Pulp","authors":"Mohamed Benaddou, Hassan Hajjaj, Mohamed Diouri","doi":"10.12911/22998993/172423","DOIUrl":"https://doi.org/10.12911/22998993/172423","url":null,"abstract":"Amid fodder shortages and environmental concerns in Morocco, this study explores a transformative livestock feed strategy. By combining olive pulp (OP) and wheat straw (WS) treated with Phanerochaete chrysosporium and Fusarium oxysporum, we enhance digestibility and sustainability. Five mixing ratios were examined: 100% OP (OP), 75% OP and 25% WS (MOP), 50% OP and 50% WS (OPWS), 25% OP and 75% WS (MWS), and 100% WS (WS). Fungal treatment and ratios influence cellulose-lignin dynamics. MOP increased cellulose (13.1), OP showed an initial decrease (-8.51, -5.88 for P. chrysosporium, F. oxysporum ), with cellulose rising from 4 to 8 weeks, then declining. Lignin degradation differed (P < 0.001), P. chrysosporium was efficient (24.22%±13.75 to 31.57% ± 20.65), MWS remarkable, and OPWS stable. Mixed substrates showed higher IVTD_imp (58.56% ± 16%, 54.18% ± 20%, 36.83% ± 18%), OP and WS lower (26.25% ± 11%, 14.43% ± 7.48%). Enhanced IVTD (4-12 weeks) seen, OPWS and MOP excelling, WS lower. In conclusion, this study unveils the potential of fungal-treated feed optimization through substrate composition and tailored treatment durations. By leveraging synergistic effects and optimizing treatment timelines, we enhance livestock feed sustainability while addressing waste management concerns. This comprehensive approach holds promise for achieving both nutritional and environmental goals in livestock production.","PeriodicalId":15652,"journal":{"name":"Journal of Ecological Engineering","volume":" 3","pages":""},"PeriodicalIF":1.3,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138616456","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-12-01DOI: 10.12911/22998993/173580
M. Mahmudi, S. Arsad, Muhammad Musa, E. Lusiana, N. Buwono, Analicia Dwi Indahwati, Irmawati Irmawati, Nabilla Artanti Sukmaputri, Aisyah Lingga Prasasti, Alfina Pagita Larasati, Alma Alifah Syifa’ Sharfina, Prayuda Rifqi Aldhiya, Rahmi Mutiara, Septania Gita Putri
The East Java coast has biodiversity potential, including microalgae. Microalgae are primary producers for the aquatic ecosystem, whose distribution depends on water quality parameters and sub-habitat characteristics. The purpose of this study was to analyse and identify the microalgae, as well as environmental quality parameters based on sub-habitat characteristics in the northern part of the East Java coast, Indonesia. The research was conducted from March to June 2023. Sample sites were determined using purposive sampling techniques at nine sites located in Gresik, Lamongan, and Tuban coasts. Water samples were collected from various sub-habitats, including the water column, sediments, rocks, mangroves, artificial substrates, macroalgae, and water plants consisting of water hyacinth ( Eichhornia crassipes ) and Coontail ( Ceratophyllum demersum ). The obtained results depicted microalgae found were from Bacillariophyceae, Chlorophyceae, Chrysophyceae, Coscinodiscophyceae, Cyano-phyceae, Dinophyceae, Trebouxiophyceae, and Zygnematophyceae. Bacillariophyceae dominated the community in all sites. The expected outcome of this study is to provide and complete the database of microalgae morphologically based on sub-habitat characteristics, particularly on the north coast of East Java, Indonesia.
{"title":"Marine Microalgae Assemblages of the East Java Coast Based on Sub-Habitats Representatives and Their Relationship to the Environmental Factors","authors":"M. Mahmudi, S. Arsad, Muhammad Musa, E. Lusiana, N. Buwono, Analicia Dwi Indahwati, Irmawati Irmawati, Nabilla Artanti Sukmaputri, Aisyah Lingga Prasasti, Alfina Pagita Larasati, Alma Alifah Syifa’ Sharfina, Prayuda Rifqi Aldhiya, Rahmi Mutiara, Septania Gita Putri","doi":"10.12911/22998993/173580","DOIUrl":"https://doi.org/10.12911/22998993/173580","url":null,"abstract":"The East Java coast has biodiversity potential, including microalgae. Microalgae are primary producers for the aquatic ecosystem, whose distribution depends on water quality parameters and sub-habitat characteristics. The purpose of this study was to analyse and identify the microalgae, as well as environmental quality parameters based on sub-habitat characteristics in the northern part of the East Java coast, Indonesia. The research was conducted from March to June 2023. Sample sites were determined using purposive sampling techniques at nine sites located in Gresik, Lamongan, and Tuban coasts. Water samples were collected from various sub-habitats, including the water column, sediments, rocks, mangroves, artificial substrates, macroalgae, and water plants consisting of water hyacinth ( Eichhornia crassipes ) and Coontail ( Ceratophyllum demersum ). The obtained results depicted microalgae found were from Bacillariophyceae, Chlorophyceae, Chrysophyceae, Coscinodiscophyceae, Cyano-phyceae, Dinophyceae, Trebouxiophyceae, and Zygnematophyceae. Bacillariophyceae dominated the community in all sites. The expected outcome of this study is to provide and complete the database of microalgae morphologically based on sub-habitat characteristics, particularly on the north coast of East Java, Indonesia.","PeriodicalId":15652,"journal":{"name":"Journal of Ecological Engineering","volume":"64 10","pages":""},"PeriodicalIF":1.3,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138626682","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-12-01DOI: 10.12911/22998993/173076
J. Drewnowski, B. Szeląg, Fabrizio Sabba, Magdalena Piłat-Rożek, A. Piotrowicz, G. Łagód
{"title":"Innovations in Wastewater Treatment: Harnessing Mathematical Modeling and Computer Simulations with Cutting-Edge Technologies and Advanced Control Systems","authors":"J. Drewnowski, B. Szeląg, Fabrizio Sabba, Magdalena Piłat-Rożek, A. Piotrowicz, G. Łagód","doi":"10.12911/22998993/173076","DOIUrl":"https://doi.org/10.12911/22998993/173076","url":null,"abstract":"","PeriodicalId":15652,"journal":{"name":"Journal of Ecological Engineering","volume":" 23","pages":""},"PeriodicalIF":1.3,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138616037","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-12-01DOI: 10.12911/22998993/172054
N. Ngearnpat, O. Chunhachart, N. Kotabin, K. Issakul
Chemical fertilizers have been widely used to improve rice production; however, their excessive use can have harmful environmental effects. Therefore, biostimulants are a sustainable option to promote rice yield and improve soil quality. This research focusses on the use of gamma-polyglutamic acid (γ-PGA) and Bacillus subtilis cells as biostimulants to improve rice growth and soil quality. The sand culture technique was performed to determine germination and growth of rice seedlings, and greenhouse experiments were conducted to evaluate the performance of rice yields. The soil quality was investigated by measuring physical and chemical characteristics. The results demonstrated that γ-PGA and B. subtilis cells were efficient biostimulants for germination by significantly increas - ing the seedling vigor index. γ-PGA considerably improved the growth parameters of 21-day-old rice seedlings by significantly increasing dry weight, total sugar, total free amino acids and total chlorophyll content compared to the control. In greenhouse experiments, γ-PGA had a positive influence on all physical characteristics and rice grain yield indicators compared to B. subtilis cells and controls. Furthermore, γ-PGA and B. subtilis cells had a stronger impact than controls on improving soil quality, and γ-PGA had a notable effect on soil physical properties rather than on their chemical properties. Based on these findings, γ-PGA outperformed B. subtilis cells as a natural biostimulant to increase rice productivity and improve the quality of paddy soil.
{"title":"Comparative Assessment of Gamma-Polyglutamic Acid and Bacillus subtilis cells as Biostimulants to Improve Rice Growth and Soil Quality","authors":"N. Ngearnpat, O. Chunhachart, N. Kotabin, K. Issakul","doi":"10.12911/22998993/172054","DOIUrl":"https://doi.org/10.12911/22998993/172054","url":null,"abstract":"Chemical fertilizers have been widely used to improve rice production; however, their excessive use can have harmful environmental effects. Therefore, biostimulants are a sustainable option to promote rice yield and improve soil quality. This research focusses on the use of gamma-polyglutamic acid (γ-PGA) and Bacillus subtilis cells as biostimulants to improve rice growth and soil quality. The sand culture technique was performed to determine germination and growth of rice seedlings, and greenhouse experiments were conducted to evaluate the performance of rice yields. The soil quality was investigated by measuring physical and chemical characteristics. The results demonstrated that γ-PGA and B. subtilis cells were efficient biostimulants for germination by significantly increas - ing the seedling vigor index. γ-PGA considerably improved the growth parameters of 21-day-old rice seedlings by significantly increasing dry weight, total sugar, total free amino acids and total chlorophyll content compared to the control. In greenhouse experiments, γ-PGA had a positive influence on all physical characteristics and rice grain yield indicators compared to B. subtilis cells and controls. Furthermore, γ-PGA and B. subtilis cells had a stronger impact than controls on improving soil quality, and γ-PGA had a notable effect on soil physical properties rather than on their chemical properties. Based on these findings, γ-PGA outperformed B. subtilis cells as a natural biostimulant to increase rice productivity and improve the quality of paddy soil.","PeriodicalId":15652,"journal":{"name":"Journal of Ecological Engineering","volume":"124 12","pages":""},"PeriodicalIF":1.3,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138608263","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-12-01DOI: 10.12911/22998993/173063
Khadija Lihi, N. Auajjar, Inass Hamdi, B. Attarassi, Kaouatar Echchayeb
The valorization of sewage sludge, a by-product of wastewater treatment by anaerobic digestion (AD), is getting more attention as a result of the advantages it provides for the environment and economy. The current investigation is an experiment performed in a lab setting using a batch-operated anaerobic digestion reactor with a mesophilic temperature of 35°C. This study examined the generation of experimental biogas and biodegradability .The effect of pretreatment by methanogenic bacteria growth medium on anaerobic digestion of sewage sludge was studied on three different concentrations of growth media, a control, and a low, medium and high concentration of culture medium, with cumulative biogas production of 610N ml /gVS added, 750 N ml /gVS added, 900 N ml /gVS added, 10 N ml /gVS added, respectively, with biodegradability rate of 52.16%, 56.5%, 74.04%, 28.70% respectively. Biogas production was enhanced at a medium concentration of culture medium and inhibited at a high concentration during anaerobic digestion of sewage sludge. Additionally, a theoretical biogas estimate was evaluated using four kinetic models (Logistic function, Modified Gompertz, Transference function, and First order); which were utilized to match the experimental biogas generation process involving the anaerobic digestion of untreated and pretreated sewage sludge by various concentrations of growth media of methanogenic bacteria . The kinetic find - ings demonstrated that both models, Modified Gompertz and Logistic function, were useful for predicting biogas output and matched experimental biogas production.
作为厌氧消化(AD)处理废水的副产物，污泥的增值处理因其在环境和经济方面的优势而受到越来越多的关注。目前的研究是在实验室环境中进行的一项实验，使用了一个分批操作的厌氧消化反应器，温度为35°C。这项研究调查了一代实验沼气和生物降解性,影响产甲烷细菌生长培养基预处理的污水污泥的厌氧消化研究了三种不同浓度的增长媒体,控制,和低、中、高浓度的培养基,累积沼气产量为610 N ml /全球之声补充道,750 N ml /全球之声补充道,900 N ml /全球之声补充道,10 N ml /全球之声补充道,分别与可生物降解率为52.16%,56.5%,分别为74.04%、28.70%。在污泥厌氧消化过程中，培养基浓度为中等时，产气量增加;培养基浓度为高浓度时，产气量受到抑制。此外，利用Logistic函数、修正Gompertz、传递函数和一阶动力学模型对理论沼气估算进行了评估;通过不同浓度的产甲烷细菌生长培养基对未处理和预处理的污泥进行厌氧消化的实验产气过程。动力学结果表明，修正的Gompertz和Logistic函数模型对预测沼气产量和匹配的实验沼气产量都是有用的。
{"title":"Effect of Biological Pretreatment on Anaerobic Sewage Sludge Digestion: Using Growth Media for Methanogenic Bacteria and Kinetic Studies for Biogas Yield","authors":"Khadija Lihi, N. Auajjar, Inass Hamdi, B. Attarassi, Kaouatar Echchayeb","doi":"10.12911/22998993/173063","DOIUrl":"https://doi.org/10.12911/22998993/173063","url":null,"abstract":"The valorization of sewage sludge, a by-product of wastewater treatment by anaerobic digestion (AD), is getting more attention as a result of the advantages it provides for the environment and economy. The current investigation is an experiment performed in a lab setting using a batch-operated anaerobic digestion reactor with a mesophilic temperature of 35°C. This study examined the generation of experimental biogas and biodegradability .The effect of pretreatment by methanogenic bacteria growth medium on anaerobic digestion of sewage sludge was studied on three different concentrations of growth media, a control, and a low, medium and high concentration of culture medium, with cumulative biogas production of 610N ml /gVS added, 750 N ml /gVS added, 900 N ml /gVS added, 10 N ml /gVS added, respectively, with biodegradability rate of 52.16%, 56.5%, 74.04%, 28.70% respectively. Biogas production was enhanced at a medium concentration of culture medium and inhibited at a high concentration during anaerobic digestion of sewage sludge. Additionally, a theoretical biogas estimate was evaluated using four kinetic models (Logistic function, Modified Gompertz, Transference function, and First order); which were utilized to match the experimental biogas generation process involving the anaerobic digestion of untreated and pretreated sewage sludge by various concentrations of growth media of methanogenic bacteria . The kinetic find - ings demonstrated that both models, Modified Gompertz and Logistic function, were useful for predicting biogas output and matched experimental biogas production.","PeriodicalId":15652,"journal":{"name":"Journal of Ecological Engineering","volume":" 21","pages":""},"PeriodicalIF":1.3,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138612403","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-12-01DOI: 10.12911/22998993/173379
Tivany Edwin, Mas Mera, P. S. Komala, Z. Zulkarnaini
Biochar is a known potential for nutrient removal in wastewater. This study focuses on the adsorption of rice-husk biochar to remove nutrients in the form of nitrate, ammonium, and phosphate in the wastewater. Two types of bio-char production were used: laboratory-made biochar with variations of pyrolysis temperature and biochar made traditionally by local people. The results showed pyrolysis temperature influence the sorption capacity of nitrate and phosphate. The best nitrate sorption capacity using biochar made with low pyrolysis temperature, whereas the best phosphate sorption capacity using biochar made with high pyrolysis temperature. While the best ammonium sorption capacity by biochar made traditionally. The use of biochar with a coarse form shows nutrient sorption ability that is not inferior to the powder form compared to the other research. The use of coarse biochar forms can be selected if the powder form is impractical for field applications. The utilization of biochar variations can be selected according to the dominant nutrient removal needs in the field.
{"title":"Impact of Pyrolysis Temperature on the Removal of Nutrients Using Coarse Rice-Husk Biochar","authors":"Tivany Edwin, Mas Mera, P. S. Komala, Z. Zulkarnaini","doi":"10.12911/22998993/173379","DOIUrl":"https://doi.org/10.12911/22998993/173379","url":null,"abstract":"Biochar is a known potential for nutrient removal in wastewater. This study focuses on the adsorption of rice-husk biochar to remove nutrients in the form of nitrate, ammonium, and phosphate in the wastewater. Two types of bio-char production were used: laboratory-made biochar with variations of pyrolysis temperature and biochar made traditionally by local people. The results showed pyrolysis temperature influence the sorption capacity of nitrate and phosphate. The best nitrate sorption capacity using biochar made with low pyrolysis temperature, whereas the best phosphate sorption capacity using biochar made with high pyrolysis temperature. While the best ammonium sorption capacity by biochar made traditionally. The use of biochar with a coarse form shows nutrient sorption ability that is not inferior to the powder form compared to the other research. The use of coarse biochar forms can be selected if the powder form is impractical for field applications. The utilization of biochar variations can be selected according to the dominant nutrient removal needs in the field.","PeriodicalId":15652,"journal":{"name":"Journal of Ecological Engineering","volume":" 41","pages":""},"PeriodicalIF":1.3,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138617794","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：