scholarly journals COMPACTION AFFECTS COMPOST EFFICACY IN DWARF OLEANDER PRODUCTION

HortScience ◽  
1992 ◽  
Vol 27 (6) ◽  
pp. 686e-686
Author(s):  
George E. Fitzpatrick ◽  
Stephen D. Verkade
Keyword(s):  
Sewage Sludge ◽  
Municipal Solid Waste ◽  
Solid Waste ◽  
Pine Bark ◽  
Waste Materials ◽  
Urban Waste ◽  
Growing Media ◽  
Msw Compost ◽  
The Media ◽  
Production Period

Three compost products made from urban waste materials, municipal solid waste (MSW), yard trash (YT), and a co-compost made from 1 part sewage sludge and 3 parts yard trash (S-YT), were used as growing media for production of dwarf oleander (Nerium oleander L.) in 25 cm. diameter containers. In one test the composts were used as stand-alone growing media and in a second test they were blended with pine bark (PB) and sand (S) in 2 ratios: 4 compost: 5 PB: 1 S and 1 compost: 1 PB: 1 S. The S-YT co-compost produced plants with the highest biomass in both tests. Reduced growth of dwarf oleander in each test was associated with the degree to which the media compacted during the 5.5 month production period. The MSW compost compacted an average 8.5 cm. per container when used as a stand-alone medium, while the S-YT mixes compacted much less, typically < 4.0 cm.

scholarly journals Treated Wastewater and Fertigation Applied for Greenhouse Tomato Cultivation Grown in Municipal Solid Waste Compost and Soil Mixtures

2020 ◽  
Vol 12 (10) ◽  
pp. 4287
Author(s):  
Nikolaos Tzortzakis ◽  
Christos Saridakis ◽  
Antonios Chrysargyris
Keyword(s):  
Municipal Solid Waste ◽  
Solid Waste ◽  
Crop Production ◽  
Soluble Solids ◽  
Low Fertility ◽  
Treated Wastewater ◽  
Growing Media ◽  
Plant Yield ◽  
Greenhouse Tomato ◽  
Msw Compost

Low-fertility soil and the use of brackish water for irrigation act as obstacles and limit crop production. The utilization of municipal solid waste (MSW), compost (C), and treated wastewater (TWW) is receiving attention nowadays not only to overcome the above limitations but also as an efficient way for waste management and reuse of raw materials. In the present study, MSW compost in different ratios (5%, 10%, 20%, and 40%), fertigation and/or irrigation with TWW were studied in tomato plants (Solanum lycopersicum L.). The addition of compost increased organic content, pH, electrical conductivity (EC), and mineral content of the growing media, while fertigation and TWW supported the mineral status of the growing media, and this was reflected in the increase of N, K, and Na in tomato leaves. Plants grown in compost-based media with fertigation produced more leaves, compared to the control, while irrigation with TWW did not increase the number of leaves. Plant biomass increased with the application of ≥20% C, fertigation, and/or TWW applications. Plant yield increased in 40% C, while fertigation increased yield in case of lower (5%-10% C) compost ratios, but TWW application did not change the yield. The combination of high C ratios and fertigation and/or TWW decreased tomato fresh weight. Different levels of C did not affect leaf photosynthesis, stomatal conductance, internal CO2 concentration, and chlorophyll fluorescence, but, in general, the combination of compost with fertigation and/or TWW affected them negatively. Fruit total soluble solids, acidity, ascorbic acid, firmness, and total phenolics were increased with the high ratios of compost and/or fertigation and TWW applications, but marketability did not. Bacteria (total coliform and Escherichia coli) units increased in growing media subjected to TWW, but lower levels were counted on the fruit, mainly due to splashing or fruit contact with the soil. The results indicate that up to 40% C can be added into the substrate, as increased plant growth and maintained plant yield for greenhouse tomato cultivation is observed, while fertigation and TWW could be used in a controlled manner as alternative means for nutrient and irrigation in vegetables following safety aspects.

Effects of municipal solid waste- and sewage sludge-compost-based growing media on the yield and heavy metal content of four lettuce cultivars

2017 ◽  
Vol 24 (32) ◽  
pp. 25406-25415 ◽  
Author(s):  
Concetta Eliana Gattullo ◽  
Carlo Mininni ◽  
Angelo Parente ◽  
Francesco Fabiano Montesano ◽  
Ignazio Allegretta ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Sewage Sludge ◽  
Municipal Solid Waste ◽  
Solid Waste ◽  
Metal Content ◽  
Heavy Metal Content ◽  
Growing Media ◽  
Sludge Compost ◽  
Sewage Sludge Compost

The use of MSW-compost on land, a study of metal and nutrient leaching

2020 ◽  
Author(s):  
Jessica Graca ◽  
Brian Kelleher ◽  
Brian Murphy
Keyword(s):  
Sewage Sludge ◽  
Municipal Solid Waste ◽  
Solid Waste ◽  
Circular Economy ◽  
Legal Status ◽  
Land Reclamation ◽  
Value Added ◽  
Heterogeneous Material ◽  
Total Chromium ◽  
Msw Compost

&lt;p&gt;It is estimated that up to 138 million tonnes of bio-waste are produced in Europe annually, with only 25% being recycled into high-quality compost and digestate. Currently, residual organic waste is generated as by-product of municipal solid waste treatment. Its reuse options vary across EU countries, due to the lack of clear guidance at European level. In some countries, compost derived from municipal solid waste (MSW &amp;#8211; compost) is restricted to being used as landfill cover or in land reclamation, under the premises of meeting national legal criteria. Other countries, have regulated its used as marketable compost if it meets defined compost standards. However, for many countries the value-added use of MSW derived compost is uncertain.&lt;/p&gt;&lt;p&gt;The restricted use of MSW - compost is linked to the organic and inorganic contamination associated with such a heterogeneous material. Despite this, under the European view of the Circular Economy, MSW-compost has great potential to be reused and recycled for the benefit of all. Controlled use on land would off-set carbon emissions by diverting the material from a waste that is largely incinerated or added to landfill to a carbon positive soil additive that increases soil quality particularly in restoration sites.&amp;#160;&lt;/p&gt;&lt;p&gt;Our study aims to risk-assess the use of MSW-compost as a soil amendment by monitoring resulting water run-off for metal and nutrient content. Leaching trials, conducted over 6 months were performed in a forest soil (20 cm depth) with a history of Sitka Spruce plantation (c.a 20 years). Adapted water storage tanks were set-up to conduct the trials. Leachate was collected weekly in the first two months, and monthly thereafter. Four treatments 1) control, 2) sewage sludge chemically stabilized (10 t/ha), 3) MSW-compost (10 t/ha) and 4) MSW-compost (25 t/ha) were established in duplicate. Sewage sludge was used as a comparison material, due to its current legal status allowing for controlled land spreading. Leachate samples were analysed for nitrate, ammonium and the metals aluminium, cadmium, copper, total chromium, mercury, nickel, zinc and lead.&amp;#160;&lt;/p&gt;&lt;p&gt;Preliminary results from the first 6 weeks show that metals concentrations in the leachate from all trials were below threshold criteria in surface water quality regulations. Levels of ammonium above detection limits were only detected at week one and surpassed 0.2 mg/L. Nitrate concentration in the leachates was found to be below 50 mg/L and it peaked in the sewage sludge and MSW-compost (25 t/ha) at week 2.&lt;/p&gt;&lt;p&gt;Results gathered so far show that the use MSW-compost in land compares to sewage sludge application in relation to their potential for water pollution. MSW-compost could be used as a soil improver under a regulatory alignment similar to the sewage sludge regulations, aligned with the current European Circular Economy goals.&lt;/p&gt;

scholarly journals Estimating the Characteristics and Emission Factor of Ammonia from Sewage Sludge Incinerator

2021 ◽  
Vol 18 (5) ◽  
pp. 2539
Author(s):  
Seongmin Kang ◽  
Joonyoung Roh ◽  
Eui-Chan Jeon
Keyword(s):  
Sewage Sludge ◽  
Municipal Solid Waste ◽  
Solid Waste ◽  
Emission Factor ◽  
Monitoring And Evaluation ◽  
Waste Incineration ◽  
Uncertainty Range ◽  
Sludge Incineration ◽  
Nh3 Emission ◽  
Secondary Substances

In the case of sewage sludge, as direct landfilling was recently prohibited, it is treated through incineration. Among the air pollutants discharged through the incineration of sewage sludge, NOx and SOx are considered secondary substances of PM2.5 and are being managed accordingly. However, NH3, another of the secondary substances of PM2.5, is not well managed, and the amount of NH3 discharged from sewage sludge incineration facilities has not been calculated. Therefore, in this study, we sought to determine whether NH3 is discharged in the exhaust gas of a sewage sludge incineration facility, and, when discharged, the NH3 emission factor was calculated, and the necessity of the development of the emission factor was reviewed. As a result of the study, it was confirmed that the amount of NH3 discharged from the sewage sludge incineration facility was 0.04 to 4.47 ppm, and the emission factor was calculated as 0.002 kg NH3/ton. The NH3 emission factor was compared with the NH3 emission factor of municipal solid waste proposed by EMEP/EEA (European Monitoring and Evaluation Programme/European Environment Agency) because the NH3 emission factor of the sewage sludge incineration facility had not been previously determined. As a result of the comparison, the NH3 emission factor of EMEP/EEA was similar to that of municipal solid waste, confirming the necessity of developing the NH3 emission factor of the sewage sludge incineration facility. In addition, the evaluation of the uncertainty of the additionally calculated NH3 emission factor was conducted quantitatively and the uncertainty range was presented for reference. In the future, it is necessary to improve the reliability of the NH3 emission factor of sewage sludge incineration facilities by performing additional analysis with statistical representation. In addition, the development of NH3 emission factors for industrial waste incineration facilities should be undertaken.

scholarly journals Process modeling of municipal solid waste compost ash for reactive red 198 dye adsorption from wastewater using data driven approaches

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Mohammad Hadi Dehghani ◽  
Mehdi Salari ◽  
Rama Rao Karri ◽  
Farshad Hamidi ◽  
Roghayeh Bahadori
Keyword(s):  
Organic Matter ◽  
Municipal Solid Waste ◽  
Solid Waste ◽  
Adsorption Process ◽  
Operating Time ◽  
Organic Matter Content ◽  
Order Kinetic ◽  
Box Behnken Design ◽  
Reactive Red 198 ◽  
Msw Compost

AbstractIn the present study, reactive red 198 (RR198) dye removal from aqueous solutions by adsorption using municipal solid waste (MSW) compost ash was investigated in batch mode. SEM, XRF, XRD, and BET/BJH analyses were used to characterize MSW compost ash. CNHS and organic matter content analyses showed a low percentage of carbon and organic matter to be incorporated in MSW compost ash. The design of adsorption experiments was performed by Box–Behnken design (BBD), and process variables were modeled and optimized using Box–Behnken design-response surface methodology (BBD-RSM) and genetic algorithm-artificial neural network (GA-ANN). BBD-RSM approach disclosed that a quadratic polynomial model fitted well to the experimental data (F-value = 94.596 and R2 = 0.9436), and ANN suggested a three-layer model with test-R2 = 0.9832, the structure of 4-8-1, and learning algorithm type of Levenberg–Marquardt backpropagation. The same optimization results were suggested by BBD-RSM and GA-ANN approaches so that the optimum conditions for RR198 absorption was observed at pH = 3, operating time = 80 min, RR198 = 20 mg L−1 and MSW compost ash dosage = 2 g L−1. The adsorption behavior was appropriately described by Freundlich isotherm, pseudo-second-order kinetic model. Further, the data were found to be better described with the nonlinear when compared to the linear form of these equations. Also, the thermodynamic study revealed the spontaneous and exothermic nature of the adsorption process. In relation to the reuse, a 12.1% reduction in the adsorption efficiency was seen after five successive cycles. The present study showed that MSW compost ash as an economical, reusable, and efficient adsorbent would be desirable for application in the adsorption process to dye wastewater treatment, and both BBD-RSM and GA-ANN approaches are highly potential methods in adsorption modeling and optimization study of the adsorption process. The present work also provides preliminary information, which is helpful for developing the adsorption process on an industrial scale.

Performance of co-composting sewage sludge and organic fraction of municipal solid waste at different proportions

2018 ◽  
Vol 250 ◽  
pp. 853-859 ◽  
Author(s):  
Difang Zhang ◽  
Wenhai Luo ◽  
Yun Li ◽  
Guoying Wang ◽  
Guoxue Li
Keyword(s):  
Sewage Sludge ◽  
Municipal Solid Waste ◽  
Solid Waste ◽  
Organic Fraction
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