International Journal Of Recycling of Organic Waste in Agriculture最新文献_第3页

Effect of composting on the microbiological and parasitic load in animal production wastes in Brazil 堆肥对巴西动物生产废弃物中微生物和寄生虫负荷的影响

IF 1.5

International Journal Of Recycling of Organic Waste in Agriculture Pub Date : 2021-05-22 DOI: 10.30486/IJROWA.2021.1909128.1132

P. Ferreira, Júlia Ferreira Xavier, Danielli Monsores Bertholoto, Dayanne A. Melo, T. R. Correia, S. Coelho, M. M. Souza, M. A. Leal, E. Araújo, I. Coelho

{"title":"Effect of composting on the microbiological and parasitic load in animal production wastes in Brazil","authors":"P. Ferreira, Júlia Ferreira Xavier, Danielli Monsores Bertholoto, Dayanne A. Melo, T. R. Correia, S. Coelho, M. M. Souza, M. A. Leal, E. Araújo, I. Coelho","doi":"10.30486/IJROWA.2021.1909128.1132","DOIUrl":"https://doi.org/10.30486/IJROWA.2021.1909128.1132","url":null,"abstract":"Purpose Animal production wastes are promising for use in agricultural production as a plant nutrient or soil conditioner. However, if not properly managed, they can contaminate the soil and plants, resulting in public health risks. Considering that the composting technique is recommended to ensure compost hygiene and agronomic viability, the present study aimed to evaluate the microbiological and parasitic load during the composting of residues from conventional and organic animal productions. Method The presence of Salmonella sp. and/or helminth eggs and the quantification of thermotolerant coliforms were determined in horse bedding and organic and conventional poultry litter during the process of composting. Results The initial load of thermotolerant coliforms was greater than 1017 MPN g-1 in the three raw materials. All of them showed a significant reduction in these bacteria at the end of the composting process, reaching 99.98%, 100.00%, and 99.80% in the horse bedding, organic poultry litter, and conventional poultry litter, respectively. All the fresh residues contained helminth eggs, with the horse bedding exhibiting the highest amount compared to the others. However, they all revealed an absence of helminth eggs at the end of the composting process. Salmonella sp. was absent in both the raw materials and the final compost. Conclusion Composting was effective in eliminating helminth eggs and reducing thermotolerant coliform levels. However, the final composts retained a higher pathogenic microbial load than that required by the current Brazilian legislation for use in agriculture.","PeriodicalId":14373,"journal":{"name":"International Journal Of Recycling of Organic Waste in Agriculture","volume":"139 9","pages":""},"PeriodicalIF":1.5,"publicationDate":"2021-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72444206","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}

引用次数: 2

Application of sewage sludge for cereal production in a Mediterranean environment (Lebanon) 污水污泥在地中海环境谷物生产中的应用(黎巴嫩)

IF 1.5

International Journal Of Recycling of Organic Waste in Agriculture Pub Date : 2021-05-19 DOI: 10.30486/IJROWA.2021.1903739.1098

D. Romanos, N. Nemer, Y. Khairallah, M. A. Saab

{"title":"Application of sewage sludge for cereal production in a Mediterranean environment (Lebanon)","authors":"D. Romanos, N. Nemer, Y. Khairallah, M. A. Saab","doi":"10.30486/IJROWA.2021.1903739.1098","DOIUrl":"https://doi.org/10.30486/IJROWA.2021.1903739.1098","url":null,"abstract":"Purpose Management of sewage sludge generated from wastewater treatment plants is a big challenge for its potential reusage in agriculture. Most of the Lebanese local sludge is discarded in the water or in landfills (most wastewater plants are partially functional). The objective of this research was to assess the effect of the application of different sewage sludge rates on the wheat production as an alternative of chemical fertilizer. \u0000Method Field trials were conducted, for one-year study, in IAAT village in the Bekaa valley-Lebanon. The considered treatments of 4, 8 and 16 kg.m-2 rates were compared to a control treatment. Physicochemical and microbiological analysis were performed on sludge and soil samples (pre cultivation and post-harvest). The harvested wheat was also analyzed for several parameters as mineral content. \u0000Results Results presented significant differences between control and treatments. pH values decreased with biosolids additions; organic matter rose in the amended soils, macronutrients levels increased. Heavy metals outcome increased significantly after amendment, microbiological analysis didn’t show any contamination by Salmonella, E.Coli, Staphylococcus Aureus and Helminth eggs. As for wheat plants' evaluation, fiber and protein contents presented an increase similar to nitrogen and phosphorus. \u0000Conclusion These results are a key component that identifies the role of biosolids as pH regulator and soil conditioner which improves the physicochemical properties of soil without any risk of microbiological contamination. These results are promising and they encourage the use of biosolids as agriculture amendment.","PeriodicalId":14373,"journal":{"name":"International Journal Of Recycling of Organic Waste in Agriculture","volume":"162 1","pages":""},"PeriodicalIF":1.5,"publicationDate":"2021-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90187353","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}

引用次数: 7

Exploitation of olive mill wastewater in sorghum irrigation 橄榄厂废水在高粱灌溉中的利用

IF 1.5

International Journal Of Recycling of Organic Waste in Agriculture Pub Date : 2021-05-06 DOI: 10.30486/IJROWA.2021.1914715.1163

Rachid Mahmoud, Fatimzahra Ainlhout, M. Abbou, M. Taleb, M. E. Haji, Z. Rais

{"title":"Exploitation of olive mill wastewater in sorghum irrigation","authors":"Rachid Mahmoud, Fatimzahra Ainlhout, M. Abbou, M. Taleb, M. E. Haji, Z. Rais","doi":"10.30486/IJROWA.2021.1914715.1163","DOIUrl":"https://doi.org/10.30486/IJROWA.2021.1914715.1163","url":null,"abstract":"Purpose In Morocco, the olive industry has made remarkable progress thanks to the \"Green Morocco Plan\" adopted by the Ministry of Agriculture. In 2018, the total production was around 2,000,000 tons of olives, with a growth of 11.93% compared to the previous years. However, each year this activity generates millions of tons of liquid and solid pollutants \"olive mill wastewater (OMW)\" and \"pomace\", discharged directly into water streams without prior treatment, which creates serious ecological problems. \u0000Method This study focuses on the use of raw and diluted OMW for the fertilization of sorghum. The OMW were characterized, diluted (½ and ¼), and applied at a rate of 5 L /week /m2. Sorghum growth was monitored by studying physiological performance (transpiration, stomatal conductance, the intensity of photosynthesis, and the performance of photosystem II). \u0000Results The raw OMW is acidic, salty, highly loaded with organic (COD / BOD5 = 7.1> 3), and inorganic matter and polyphenol content of 9 g/L. All the parameters for monitoring the growth of sorghum are lower for plants irrigated by raw OMW, which are symptoms of water stress. Using the T-test, the plants irrigated by half-diluted OMW have yielded the same results as those of the control. \u0000Conclusion Despite the fact that the half dilution of OMW has proved promising results, we suggest that it should be pretreated before its use in sorghum irrigation to reduce its organic loads and acidity.","PeriodicalId":14373,"journal":{"name":"International Journal Of Recycling of Organic Waste in Agriculture","volume":"196 1","pages":""},"PeriodicalIF":1.5,"publicationDate":"2021-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75895342","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}

引用次数: 3

Soil fertility and nutrient uptake of rice influenced by plant growth promoting microbes, seaweed extract and humic acid fortified in situ rice residue compost 促进植物生长微生物、海藻提取物和腐植酸对水稻土壤肥力和养分吸收的影响

IF 1.5

International Journal Of Recycling of Organic Waste in Agriculture Pub Date : 2021-04-24 DOI: 10.30486/IJROWA.2021.1916550.1169

Prabhu Vijayakumar, Singaravel Ramaiyan, Ramakichenin alias Balagandhi Balasubramanian

{"title":"Soil fertility and nutrient uptake of rice influenced by plant growth promoting microbes, seaweed extract and humic acid fortified in situ rice residue compost","authors":"Prabhu Vijayakumar, Singaravel Ramaiyan, Ramakichenin alias Balagandhi Balasubramanian","doi":"10.30486/IJROWA.2021.1916550.1169","DOIUrl":"https://doi.org/10.30486/IJROWA.2021.1916550.1169","url":null,"abstract":"Purpose Intensive rice cultivation, non-addition of organic matter and indiscriminate use of inorganic fertilizers lead to soil fertility deterioration; on other side, farmers are burning huge quantities of rice residue causing severe air pollution warrants pragmatic disposal solution. In situ composting is considered as a potential alternative to destruction of crop residues. Moreover, fortification of crop residue with beneficial microbes and bio stimulants increase the availability of nutrients which constitutes an integral component in sustainable agriculture.The objective was to evaluate the effect of in situ rice residue compost fortification with PGPM consortia, humic acid and seaweed extract on the soil nutrient availability and uptake by rice. Method The experiment was conducted in a RBD at field condition. Rice was grown under 10 treatments comprising a control (100 % NPK) and nine treatments (in situ rice residue, fortified FYM, fortified in situ rice residue along with 100, 75 and 50 % NPK). Results In situ rice residue fortified with PGPM consortia, humic acid and seaweed extract significantly improved the soil carbon, nutrients' availability (macro and micro) and soil fertility. Combined application of fortified rice residue compost with 75% NPK resulted in significantly higher rice yields (grain 6.03 t ha-1 and straw 8.57 t ha-1) and nutrient uptake. Conclusion In situ rice residue composting provides promising straw disposal method as well as recoups lost share of organic matter and nutrients to soil. Farmers may adapt in situ compost to restore soil health without causing environmental hazard and also sustain crop productivity.","PeriodicalId":14373,"journal":{"name":"International Journal Of Recycling of Organic Waste in Agriculture","volume":"44 1","pages":""},"PeriodicalIF":1.5,"publicationDate":"2021-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88378925","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}

引用次数: 3

Effects of irrigation with municipal treated wastewater on soil’s heavy metals accumulation and turf leaves under drip and sprinkler systems (Case study: Agadir, Southern Morocco) 城市污水灌溉对滴灌和洒水系统下土壤重金属积累和草坪叶片的影响(案例研究:摩洛哥南部阿加迪尔)

IF 1.5

International Journal Of Recycling of Organic Waste in Agriculture Pub Date : 2021-04-23 DOI: 10.30486/IJROWA.2021.1901411.1085

N. El-Ouahmani, A. Chahouri, A. Zekhnini, K. Azim, R. Choukr-allah, B. Yacoubi

{"title":"Effects of irrigation with municipal treated wastewater on soil’s heavy metals accumulation and turf leaves under drip and sprinkler systems (Case study: Agadir, Southern Morocco)","authors":"N. El-Ouahmani, A. Chahouri, A. Zekhnini, K. Azim, R. Choukr-allah, B. Yacoubi","doi":"10.30486/IJROWA.2021.1901411.1085","DOIUrl":"https://doi.org/10.30486/IJROWA.2021.1901411.1085","url":null,"abstract":"Purpose Treated wastewaters are reused in agriculture to deal with the water deficit, especially in arid and semi-arid regions. However, they may contain contaminants such as heavy metals that can adversely affect the soil quality and life health. This work aimed to assess the degree of contamination of the soil and the turf leaves of a golf course irrigated in the long term (10 years) by treated wastewaters. \u0000Method Analysis of eight heavy metals (Cd, Co, Cr, Cu, Ni, Mn, Fe and Zn) was carried out at two sites. The first was irrigated by sprinkling (site 1), the second by a drip system (site 2). \u0000Results The results showed a generalized contamination of the soil at the two sites. Fe and Mn recorded the highest levels. Cd and Cr contents were significantly higher in the soil of site 1. However, all the heavy metals recorded values below the limits set by the FAO / WHO standards for soil. Turf leaves also exhibited high values of Fe and Mn contents in the two sites. Mn content was significantly higher in in the turf leaves from site 1. The results showed an accumulation of all the metals in turf leaves in which the Fe and Cd contents exceeded the FAO / WHO standards. \u0000Conclusion Long-term irrigation results in an accumulation of heavy metals in the soil and in turf leaves. Particular attention should be paid to Cd and Fe for the use of treated wastewater in agriculture. Drip irrigation system would minimize crop contamination.","PeriodicalId":14373,"journal":{"name":"International Journal Of Recycling of Organic Waste in Agriculture","volume":"37 1","pages":""},"PeriodicalIF":1.5,"publicationDate":"2021-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73377623","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}

引用次数: 5

Physico-chemical changes and maturity evaluation of composts from wood residue mixed with sewage sludge and chicken manure 木渣与污泥、鸡粪混合堆肥的理化变化及成熟度评价

IF 1.5

International Journal Of Recycling of Organic Waste in Agriculture Pub Date : 2021-04-13 DOI: 10.30486/IJROWA.2021.1900853.1081

M. Saghi, P. Ghorbannezhad, A. Bay, Farangis Saeidi

{"title":"Physico-chemical changes and maturity evaluation of composts from wood residue mixed with sewage sludge and chicken manure","authors":"M. Saghi, P. Ghorbannezhad, A. Bay, Farangis Saeidi","doi":"10.30486/IJROWA.2021.1900853.1081","DOIUrl":"https://doi.org/10.30486/IJROWA.2021.1900853.1081","url":null,"abstract":"Purpose Using the effective approaches for modifying the recycled wood as a novel bulky agent improves the quality of soil amendment. This study aimed to compare the stability and maturity of the soil amendments produced by the compostation of forest industrial waste and sewage sludge on seed germination. \u0000Method Three materials, namely sawdust, sewage sludge, and chicken manure were mixed at different ratios (dry weight basis) to reach the initial bulk density of 0.40 Kg.L-1, the temperature of 30 °C, the C/N ratio of 25, and the moisture content of 60 %. A pilot-scale composting process was applied to monitor the aeration rate, temperature, and moisture contents during the process over time. The comparison of physico-chemical, phytotoxicity, and germination indices among the samples was performed in three repetitions. \u0000Results The results of this study indicated that the sustainable conditions (i.e., the temperature of 70 °C, aeration rate of 0.30 L.Kg-1DM.min-1, and moisture content of 50-60 %) can have a significant effect on the thermophilic stage for compost curing without any inhibitory repercussion. Increasing the germination index of cress (Lepidium sativum) up to 79 % proved that the toxicity of industrial sewage sludge was declined through the elimination of heavy metals. \u0000Conclusion This study revealed that the availability of bulky agents such as wood residue can reinforce the microbial activity by continuously decreasing the C/N ratio to the minimum value of 13.2.","PeriodicalId":14373,"journal":{"name":"International Journal Of Recycling of Organic Waste in Agriculture","volume":"498 1","pages":""},"PeriodicalIF":1.5,"publicationDate":"2021-04-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77060634","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}

引用次数: 0

An effective organic waste recycling through vermicomposting technology for sustainable agriculture in tropics 利用蚯蚓堆肥技术对热带地区有机废弃物进行有效回收，实现农业可持续发展

IF 1.5

International Journal Of Recycling of Organic Waste in Agriculture Pub Date : 2021-04-11 DOI: 10.30486/IJROWA.2021.1894997.1080

Ginette Sandrine Liégui, Stéphane Cognet, Guy Valerie Wafo Djumyom, Paul Agendia Atabong, Jean Pierre Fankem Noutadié, R. R. Chamedjeu, C. Temegne, I. Kengne

{"title":"An effective organic waste recycling through vermicomposting technology for sustainable agriculture in tropics","authors":"Ginette Sandrine Liégui, Stéphane Cognet, Guy Valerie Wafo Djumyom, Paul Agendia Atabong, Jean Pierre Fankem Noutadié, R. R. Chamedjeu, C. Temegne, I. Kengne","doi":"10.30486/IJROWA.2021.1894997.1080","DOIUrl":"https://doi.org/10.30486/IJROWA.2021.1894997.1080","url":null,"abstract":"PurposeThe management of household wastes has been a real challenge for the capital city of Cameroon for some years now. In order to adopt ecological and sustainable strategies for better management of organic fraction of solid wastes, the present work was aimed to propose a sustainable alternative for the recycling of household organic waste through a vermicomposting process. \u0000Method A vermicomposting of household organic waste was carried out during 46 days, preceded by 23 days of pre-composting. Then, three treatments were established by mixing epigeic earthworms with different proportion of pre-composted waste. Maturation parameters such as pH, electrical conductivity (EC), C/N ratio, ammonium (N-NH4+) and total organic matter (TOM) were monitored about four weeks. The agronomic quality of the vermicompost was also determined at the end. \u0000Results During pre-composting, the temperature reached a maximum of 54.3±5.4°C suitable for the elimination of potential pathogen. The pH varied between 9.44 and 8.53 leading towards neutrality at the end of the vermicomposting process. The obtained mean values of C/N ratio and the TOM were respectively 11.04-11.68 and 25.82-27.19% in line with the AFNOR (NFU 44-051) guideline. The obtained vermicompost revealed high levels of nutrients such as N, P, K, Ca and Mg. The phytotoxicity test on lettuce showed germination rates above 50%, revealing the non-toxic nature of the vermicompost produced. \u0000Conclusion The vermicompost were rich in nutrients and exhibited the non-phytotoxicity. Thus, vermicomposting can be applied in the context of Cameroon to transform organic waste into organic fertiliser suitable for sustainable agriculture.","PeriodicalId":14373,"journal":{"name":"International Journal Of Recycling of Organic Waste in Agriculture","volume":"117 1","pages":""},"PeriodicalIF":1.5,"publicationDate":"2021-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80996260","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}

引用次数: 4

Soil aggregation indexes and chemical and physical attributes of aggregates in a Typic Hapludult fertilized with swine manure and mineral fertilizer 猪粪与矿肥混合施用典型单倍体土壤团聚体指标及团聚体理化性质

IF 1.5

International Journal Of Recycling of Organic Waste in Agriculture Pub Date : 2021-03-01 DOI: 10.30486/IJROWA.2021.1896960.1051

Guilherme Wilbert Ferreira, Lucas Benedet, T. Trapp, A. P. Lima, V. M. Junior, A. Loss, C. R. Lourenzi, J. J. Comin

{"title":"Soil aggregation indexes and chemical and physical attributes of aggregates in a Typic Hapludult fertilized with swine manure and mineral fertilizer","authors":"Guilherme Wilbert Ferreira, Lucas Benedet, T. Trapp, A. P. Lima, V. M. Junior, A. Loss, C. R. Lourenzi, J. J. Comin","doi":"10.30486/IJROWA.2021.1896960.1051","DOIUrl":"https://doi.org/10.30486/IJROWA.2021.1896960.1051","url":null,"abstract":"Purpose The objective was to evaluate the effects of mineral fertilizers and swine manure fertilization on soil aggregation indexes and on chemical and physical attributes of aggregates in Typic Hapludult managed under minimum tillage system. Method Experiment was implemented in 2013, in southern Brazil. The treatments were control, mineral fertilization (MF), swine manure compost + MF (SMC+MF); pig slurry + MF (PS+MF); PS to supply N for maize and black oat (PS100). In May 2015 and 2016, undisturbed soil samples were collected to obtain soil aggregates. Aggregates stability was evaluated through the mean weight diameter (MWD) and mean geometric diameter (MGD) indexes and aggregate distribution by diameter classes. In macroaggregates, total organic carbon (TOC), total nitrogen (TN), clay flocculation degree (CF%) and ∆pH were evaluated. Results The use of swine manure, associated or not to MF, increases TOC and TN contents in soil aggregates in 67.02 and 125.87%, respectively, for SMC+MF treatment. However, it was not efficient in improving soil physical attributes, reducing soil aggregation indexes, mainly in the 5-10 cm layer, by the decreased values of MWD and MGD. This result corroborates with the increase in microaggregates in all treatments. This was a result of the negative ∆pH values and the increased CF%. Conclusion Despite the increase in organic matter contents observed in this study, this was not enough to guarantee an improvement in soil physical attributes over 4 years. These results show that management must be supported by several conservationist techniques in order to have soil quality.","PeriodicalId":14373,"journal":{"name":"International Journal Of Recycling of Organic Waste in Agriculture","volume":"57 1","pages":"1-17"},"PeriodicalIF":1.5,"publicationDate":"2021-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91211278","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}

引用次数: 3

Evaluation of the sensitivity and production of flowers in Tagetes erecta L. exposed to high doses of sodium from irrigation with landfill leachates 垃圾渗滤液灌溉高剂量钠对万寿菊(Tagetes erecta L.)花的敏感性及产量评价

IF 1.5

International Journal Of Recycling of Organic Waste in Agriculture Pub Date : 2021-03-01 DOI: 10.30486/IJROWA.2021.1900504.1078

M. Abrile, M. L. Fiasconaro, S. Gervasio, M. Antolín, M. Lovato

{"title":"Evaluation of the sensitivity and production of flowers in Tagetes erecta L. exposed to high doses of sodium from irrigation with landfill leachates","authors":"M. Abrile, M. L. Fiasconaro, S. Gervasio, M. Antolín, M. Lovato","doi":"10.30486/IJROWA.2021.1900504.1078","DOIUrl":"https://doi.org/10.30486/IJROWA.2021.1900504.1078","url":null,"abstract":"Purpose Reuse of landfill leachate is an effective alternative for their nutrients to mitigate decrease in freshwater. On the other hand, the growth of vegetation in the final disposal areas provides many benefits such as improving the visual impact, controlling of hydric erosion, etc. The purpose of this work was to evaluate landfill leachate as irrigation water and source of nutrients for growth of Tagetes erecta L., an ornamental plant with phytoremediation capacities. Method Vegetal growth, physiological responses and mineral elements uptake of the ornamental plant Tagetes erecta L. were studied with different levels of landfill leachate irrigation. The landfill leachate was provided by the municipal waste treatment. Experimental period covered 34 days of daily watering between the beginning and end of the flowering stage. Three different irrigation treatments were used: T1: 10% leachate; T2: 25% leachate; T3: 50% leachate. Hoagland's solution served as the control treatment. Results The irrigation treatment with a dose of 50% leachate causes a clear deterioration in the plant and its flowers. In lower doses, the plant responds favorably to both the production of flowers and the main features of them. Also, the water-use efficiency (WUE) is diminished in those plants irrigated with the major dose of leachate. Conclusion Maintaining controlled doses, landfill leachates can be used as an alternative source of water and nutrients. Irrigation with leachates of these characteristics should be done in dosages not higher than 25% to avoid possible damage of Tagetes erecta L. growth.","PeriodicalId":14373,"journal":{"name":"International Journal Of Recycling of Organic Waste in Agriculture","volume":"46 1","pages":"63-75"},"PeriodicalIF":1.5,"publicationDate":"2021-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90634222","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}

引用次数: 1

Solubility and physical composition of rice husk ash silica as a function of calcination temperature and duration 稻壳灰二氧化硅的溶解度和物理组成随煅烧温度和时间的变化

IF 1.5

International Journal Of Recycling of Organic Waste in Agriculture Pub Date : 2021-03-01 DOI: 10.30486/IJROWA.2021.1899156.1069

Ryoko Sekifuji, V. C. Le, M. Tateda, H. Takimoto

{"title":"Solubility and physical composition of rice husk ash silica as a function of calcination temperature and duration","authors":"Ryoko Sekifuji, V. C. Le, M. Tateda, H. Takimoto","doi":"10.30486/IJROWA.2021.1899156.1069","DOIUrl":"https://doi.org/10.30486/IJROWA.2021.1899156.1069","url":null,"abstract":"Purpose The solubility of silica is a key parameter affecting its suitability as a rice fertilizer. Therefore, this study determined the effect of calcination temperature and duration on the physical composition of silica derived from rice husk ash. Method Rice husks were calcined at 100–900 °C for 15–120 min in an electric furnace. The solubility and physical composition of the samples were measured, and the appearance of the calcined rice husk ash was determined via visual observations. Results The appearance of the rice husk ash changed drastically at a calcination temperature of 300 °C. The husk exhibited the whitest color at 500 °C and 120 min of calcination. The solubility of silica in the rice husk ash increased up to a calcination temperature of 500 °C and then started to decrease. The silica in the rice husk ash exhibited a gray zone between the amorphous and crystalline structures. Conclusion For actual field applications of silica derived from rice husk ash as a fertilizer, calcination conditions of 400–800 °C and 15 min are proposed to improve solubility. The optimal calcination temperature should be determined based on the heat recovery efficiency.","PeriodicalId":14373,"journal":{"name":"International Journal Of Recycling of Organic Waste in Agriculture","volume":"52 1","pages":"19-27"},"PeriodicalIF":1.5,"publicationDate":"2021-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90823947","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}

引用次数: 2