scholarly journals Organic Waste in Composting: A brief review

2018 ◽  
Vol 8 (01) ◽  
Author(s):  
Suhas S. Gonawala ◽  
Hemali Jardosh
Keyword(s):  
Solid Waste ◽  
Organic Waste ◽  
Low Cost ◽  
Agricultural Waste ◽  
Negative Effects ◽  
Yard Waste ◽  
Composting Process ◽  
Carbon Nitrogen Ratio ◽  
Phosphorus And Potassium ◽  
Many Sources

This work studied on the composting process of organic waste. Organic waste is the easily biodegradable waste. Organic wastes are produced from many sources Such as agricultural waste, market waste, kitchen waste, urban solid waste and municipal solid waste. Without proper management, this waste could create several environments problem. Therefore, composting is the best low-cost alternative solution to overcome this problem. The composting method can degrade all types of organic waste such as fruits, vegetables, plants, yard waste and others. The organic waste composition can be used as nutrients for crops, soil additives and for environmental management. However, many factors can contribute to the quality of compost products since different types of organic waste have different concentrations of nutrients, Nitrogen, Phosphorus and Potassium (N, P, K) that are the common macro energetics present in fertilizers. The presence of heavy metals shows how Composts can be applied to soils without contributing any negative effects. In terms of the factor affecting the composting process, temperature, pH, moisture content and carbon nitrogen ratio (C: N) are the main parameters that contribute to the efficiency of the composting process.

Removal of nutrients from Organic Liquid Agricultural Waste using filamentous algae.

2020 ◽  
Author(s):  
Gonzalo Flores-Morales ◽  
Mónica Díaz ◽  
Patricia Arancibia-Avila ◽  
Michelle Muñoz-Carrasco ◽  
Pamela Jara-Zapata ◽  
...  
Keyword(s):  
Organic Waste ◽  
Low Cost ◽  
Organic Liquid ◽  
Agricultural Waste ◽  
Filamentous Algae ◽  
Tertiary Treatment ◽  
Nutrient Reduction ◽  
Algae Removal ◽  
Algae Growth ◽  
Waste Effluents

Abstract A feasibility analysis of tertiary treatment for Organic Liquid Agricultural Waste is presented using filamentous algae belonging to the genus Cladophora sp. as an alternative to chemical tertiary treatment. The main advantages of tertiary treatments that use biological systems are the low cost investment and the minimal dependence on environmental variables. In this work we demonstrate that filamentous algae reduces the nutrient load of nitrate (circa 75%) and phosphate (circa 86%) from the organic waste effluents coming from dairy farms after nine days of culture, with the added advantage being that after the treatment period, algae removal can be achieved by simple procedures. Currently, the organic wastewater is discarded into fields and local streams. However, the algae can acquire value as a by-product since it has various uses as compost, cellulose, and biogas. A disadvantage of this system is that clean water must be used to achieve enough water transparency to allow algae growth. Even so, the nutrient reduction system of the organic effluents proposed is friendly to the ecosystem, compared to tertiary treatments that use chemicals to precipitate and collect nutrients such as nitrates and phosphates.

scholarly journals Monitoring of Physical Parameters in Organic Waste Composting

2018 ◽  
Vol 10 (7) ◽  
pp. 464
Author(s):  
Ana Kaline da Costa Ferreira ◽  
Nildo Da Silva Dias ◽  
Daianni Ariane da Costa Ferreira ◽  
Francisco Souto de Sousa Junior ◽  
Moadir De Sousa Leite ◽  
...  
Keyword(s):  
Solid Waste ◽  
Plant Material ◽  
Organic Waste ◽  
Environmental Problems ◽  
Physical Parameters ◽  
Composting Process ◽  
Efficient Measures

The volume of biodegradable solid waste and its inadequate disposal have led to serious environmental problems, requiring efficient measures that prioritize the recycling of these wastes, promoting sustainability. The objective of this research was to monitor the behavior of physical parameters during the organic waste composting process. For this, 5 piles of organic waste were built through the composting technique developed according to the windrow method. The piles were composed of 70% of plant material, and 30% varied between manure and food remains. The piles were composed of 70% of plant material, and 30% varied between manure and food remains. The proportions were: I pile, 1:1 (15% manure and 15% rest of food); Pile II, 2:1 (20% manure and 10% rest of food); Cell III, 1:2 (10% manure and 20% rest of food); (30% manure and 0% rest of food) and the V pile in the ratio of 0:3 (0% manure and 30% rest of food). The evaluated parameters were temperature, moisture, pH, TOC, TN and C/N ratio. During the process of compost maturation, the parameters evaluated were kept within the established standards for the composting process.

Anaerobic digestion of organic waste in Japan: the first demonstration plant at Kyoto City

2002 ◽  
Vol 45 (12) ◽  
pp. 113-118 ◽  
Author(s):  
T. Komatsu ◽  
T. Kimura ◽  
Y. Kuriyama ◽  
Y. Isshiki ◽  
T. Kawano ◽  
...  
Keyword(s):  
Anaerobic Digestion ◽  
Municipal Solid Waste ◽  
Solid Waste ◽  
Energy Recovery ◽  
Organic Waste ◽  
Yard Waste ◽  
Kyoto City ◽  
Demonstration Plant

Recycling of Municipal Solid Waste is vigorously promoted in Japan and the necessity of energy recovery from organic waste is increasing. An anaerobic digestion demonstration plant for organic waste in Kyoto City, Japan has been operated for about two years. Three kinds of wastes (garbage and leftovers from hotels, yard waste and used paper) mixed at various ratios are used. The plant has maintained stable operations with each mixture, generating biogas by the decomposition of VS at the rate of about 820 m3N/ton-VS.

Effects of different lipid contents on growth of earthworms and the products during vermicomposting

2019 ◽  
Vol 37 (9) ◽  
pp. 934-940 ◽  
Author(s):  
Zexuan Wu ◽  
Bangyi Yin ◽  
Xu Song ◽  
Qi Zhao
Keyword(s):  
Lipid Content ◽  
Low Cost ◽  
Nitrifying Bacteria ◽  
Available Phosphorus ◽  
Negative Effects ◽  
Kitchen Waste ◽  
Lipid Contents ◽  
High Lipid ◽  
Carbon Nitrogen Ratio ◽  
Chemical Characters

In China, the production of kitchen waste was more than 97 million tons per year in 2016. The high lipid content of kitchen waste makes it hard to degrade. Vermicomposting is a kind of low-cost biotechnology through the combination of earthworms and microbes, which could be considered in converting kitchen waste to valuable products. However, the effect of the lipid in kitchen waste on earthworms and composting is not known yet. The objective of this study was to analyze the effects of lipid on vermicomposting and to derive the most suitable lipid content in vermicomposting. In our study, kitchen waste with four different lipid contents was prepared: 0% (A), 5% (B), 10% (C) and 15% (D). The earthworm growth and chemical characters of substrates were measured at the interim (14 days) and the end (28 days) of vermicomposting. Our results showed that the high content of lipid had negative effects on growth of earthworms and products in vermicomposting. The kitchen waste with lower lipid content could be better composted by earthworms. The average body weight of the earthworm increased by 9% in treatment A. Total nitrogen, available phosphorus, available potassium and nitrate nitrogen of treatment A with 0% (measured value: 5%) lipid content were significantly higher than those in other treatments. Meanwhile, treatment A had the lowest carbon/nitrogen ratio which might be due to hindrances in the breathing and activities of earthworms. The high content of lipid makes growth of aerobic bacteria such as nitrifying bacteria difficult.

Experimental Characterization of a Small-Scale Downdraft Gasifier for Biomass Waste

2010 ◽  
Author(s):  
Vaughn M. Emmerson ◽  
Gerardo Diaz
Keyword(s):  
Agricultural Waste ◽  
Molar Fraction ◽  
Global Scale ◽  
Small Scale ◽  
Fuel Wood ◽  
Biomass Waste ◽  
Yard Waste ◽  
Downdraft Gasifier ◽  
Many Sources

Biomass is essentially organic garbage obtained from many sources of dead or live vegetation including yard waste. According to recent data, approximately sixty million bone dry tons of biomass are produced in California each year [1]. Of this, only five million tons are used for the generation of electricity. At a global scale, 8700 Tg of biomass (dry matter) were burned without energy recovery in 1991. This number has increased especially in developing countries with the main sources being the savannas, agricultural waste, tropical forests, and fuel wood. Inefficient burning of waste, through combustion in open-air or in open dumps are a significant source of pollutants leading to possible health effects. An alternative to open air combustion is gasification, which involves the conversion of biomass to generate synthesis gas (syngas) by adding heat and limited amounts of oxygen. Several gasifying agents can be utilized, but air is commonly used in small-scale gasifiers. The use of air causes a large molar fraction of nitrogen in the syngas composition. This papers shows the experimental results obtained with a commercially available small-scale downdraft gasifier. Woodchips obtained from a nearby landfill are used as input to the gasifier and temperatures, flow rates, and syngas composition are reported and analyzed.

Co-composting as an oxygen stabilization of an organic fraction of municipal solid waste and industrial sewage sludge

2013 ◽  
Vol 68 (8) ◽  
pp. 1697-1706
Author(s):  
M. Milczarek ◽  
E. Neczaj ◽  
K. Parkitna
Keyword(s):  
Organic Matter ◽  
Sewage Sludge ◽  
Municipal Solid Waste ◽  
Solid Waste ◽  
Organic Waste ◽  
Negative Impact ◽  
Good Method ◽  
Composting Process ◽  
Industrial Sewage ◽  
Industrial Sewage Sludge

The purpose of this work is to study the characteristics of the co-composting of municipal solid waste (MSW), sewage sludge, grass and sawdust. Differing proportions of biodegradable waste were investigated through changes of temperature, oxygen consumption, organic matters, moisture content, carbon, nitrogen, C/N ratio as well as heavy metals and pathogen microorganisms content. The present study has shown that addition of MSW above 10% had a negative impact on the composting process. The initial C/N of the mixtures with a higher MSW content was below 18. Lower losses of organic matter occurred during composting for the mixture with the highest addition of MSW. Although studies have shown that composting is a good method for the disposal of organic waste additional research is required in order to optimize the organic and nitrogen compounds degradation during the co-composting process. In conclusion, a 1:4:4:1 mixture of MSW:sewage sludge:grass:sawdust is recommended because it can achieve high temperature as well as the highest organic matter degradation and highest N content in the final composting product. The concentration of heavy and light metals in all composts was within the limits of regulation of the Polish Minister of Agriculture and Rural Development.

scholarly journals The effects of Insects on the Physicochemical Characteristics During Composting

2019 ◽  
pp. 2426-2432
Author(s):  
Sayran Yousif Jalal ◽  
Nihal Suhail Hanna ◽  
Yahya Ahmed Shekha
Keyword(s):  
Organic Matter ◽  
Organic Carbon ◽  
Solid Waste ◽  
Organic Waste ◽  
Organic Fertilizer ◽  
Organic Matter Content ◽  
Physicochemical Characteristics ◽  
Household Waste ◽  
Organic Carbon Content ◽  
Composting Process

     Insects have a vital role in solid waste composting process. Insects are detritus feeders that enhance changing the physical and chemical properties of decomposed materials during composting processes. This behavior makes insects excellent organisms in recycling of organic matter. The present study assesses the success of insects’ population in relation with the degradation of solid waste.  The study was carried out in the glass house facility of the College of Science, Salahaddin University in Erbil City, Kurdistan region of Iraq, using household organic waste. During composting process, three stages of lifecycle of insects were observed and recorded. The total number of insects reached to 1268 individuals, belonging to the orders Coleoptera and Diptera, class Insects. Diptera individuals were the most abundant insects with 95.4% of the total belonged to four families (Muscidae, Calliphoridae, Ulidiidae and Milichiidae). Coleoptera individuals represented 4.6% of the total number, belonging to three families (Promecheilidae, Staphylinidae and Salpingidae). The measured physicochemical characteristics of the compost included: pH, EC, moisture, total organic carbon, total nitrogen, total phosphorous and organic matter. The pH value of the composts ranged from 7.79 to 7.97. Organic carbon content and organic matter content ranged from 20.16 to 26.99 % and 34.67 to 46.23 %, respectively. It can concluded that household waste compost is not just a waste but has the potential to be transformed into a good quality organic fertilizer through composting. Composting can convert solid organic waste into a valuable added material.

Green Biological Transformation of Food and Yard Waste

2015 ◽  
Vol 73 (1) ◽  
Author(s):  
Mohammed F.M. Abushammala ◽  
Noor Ezlin Ahmad Basri ◽  
Shahrom Md Zain ◽  
Nur Fatin Mat Saad ◽  
Nurul Afida Zainudin
Keyword(s):  
Food Waste ◽  
Organic Waste ◽  
Economic Value ◽  
Management Technique ◽  
Waste Generation ◽  
High Quality ◽  
Yard Waste ◽  
Composting Process ◽  
Fruit Waste ◽  
Biological Transformation

The composting of organic waste is an alternative waste management technique that can be used to control the increase in waste generation. The objective of this study was to identify a type of effective microbes (EMs) that accelerate the composting process. The study also determined the suitability of using a KompostKu rotary composter along with additional materials such as coconut husks and Takakura EMs for composting food waste from the Universiti Kebangsaan Malaysia (UKM), and determines the economic value of the compost. In order to select the most efficient EMs, Takakura and fruit waste EMs were prepared and used during the composting of both food and yard waste using a composter barrel. Four important parameters were examined to ensure the effectiveness of the process, including temperature, moisture content, potential of hydrogen (pH), and carbon to nitrogen (C/N) ratio. The experimental results revealed that Takakura EMs were superior to the fruit waste EMs in accelerating the composting process. The use of coconut husks as an absorbing agent with Takakura EMs also accelerated the composting process, requiring approximately four weeks to fully decompose the food waste. It was estimated that the composting of food and landscape waste at the UKM could annually generate compost products worth over 30,660 Malaysian Ringgit (MYR). The use of Takakura EMs enhanced and accelerated the composting process and provided high-quality compost

scholarly journals THE INFLUENCE OF COMPOSTING TIME AND COMPOSITION OF ORGANIC WASTE COMPOST AGAINST THE GROWTH RATE OF LONG BEAN LEAVES (VIGNA CYLINDRICA (L.)

2019 ◽  
Vol 3 (1) ◽  
pp. 1
Author(s):  
Anshah Silmi Afifah ◽  
Gita Prajati ◽  
I Wayan Koko Suryawan
Keyword(s):  
Solid Waste ◽  
Organic Waste ◽  
Growth Period ◽  
Waste Reduction ◽  
Bean Plant ◽  
Soil Composition ◽  
Composting Process ◽  
Organic Solid Waste ◽  
Organic Solid ◽  
Bean Leaves

The landfill's capacity is currently decreasing, so solid waste reduction needs to be increased. Organic solid waste is generated by daily activities. The objective of the study was to determine the composting and composition of the growth of leaves of the long bean plant (Vigna cylindrical (L.)). Methods used in the composting process is the takakura method. The 80% compositions of compost are spinach waste. The composting process accelerated by the addition of local microorganisms (MOL) from fruit and compost to accelerate decomposed of organic waste. Variables on this research were functions of the time for the composting process and the amount of compost with the soil to the long bean plant (Vigna cylindrical (L.)). Compost collection time was determined as a research variable with variations on 14, 28, and 42 days, while variations in compost and soil composition tested on a long bean plant (Vigna cylindrical (L.)) of 1: 1 and 1: 2. The results showed good leaves growth period was 28th day with a composition 1: 1. Kapasitas Tempat Pemrosesan Akhir (TPA) saat ini semakin berkurang, sehingga reduksi sampah perlu ditingkatkan. Sampah organik merupakan salah satu sampah yang banyak dihasilkan oleh aktivitas seharihari. Tujuan penelitian yakni mengetahui pengaruh waktu pengomposan dan komposisi kompos terhadap laju pertumbuhan daun tanaman Kacang Panjang (Vigna cylindrica (L.)). Metode yang digunakan untuk membuat kompos yaitu metode takakura. 80% komposisi kompos berasal dari sisa sayur bayam. Pembuatan kompos dilakukan dengan menambah mikro organisme local (MOL) dari buah dan kompos jadi untuk mempercepat sampah organik terdekomposisi. Variabel yang digunakan yaitu variasi waktu pengambilan kompos dan variasi komposisi kompos dengan tanah terhadap Kacang Panjang (Vigna cylindrica (L.)). Waktu pengambilan kompos ditentukan sebagai variabel penelitian dengan variasi pengambilan pada hari ke - 14, 28, dan 42, sedangkan variasi komposisi kompos dan tanah yang diujikan terhadap tanaman Kacang Panjang (Vigna cylindrica (L.)) sebesar 1 : 1 dan 1 : 2. Hasil penelitian menunjukkan laju pertumbuhan daun paling besar yaitu pada variasi waktu pengambilan kompos hari ke – 28 dengan komposisi 1 : 1.

scholarly journals Transformation of Biodegradable Organic Municipal Solid Waste to Compost Using Stationary and Rotary Units

2021 ◽  
Vol 8 (3) ◽  
Author(s):  
Waleed M. Abood ◽  
Dhafer F. Ali ◽  
Firas S. Abass ◽  
Jathwa A. Al Ameen
Keyword(s):  
Municipal Solid Waste ◽  
Solid Waste ◽  
Ph Value ◽  
Raw Materials ◽  
Chicken Manure ◽  
Composting Process ◽  
Decomposition Of Organic Matter ◽  
Carbon Nitrogen Ratio ◽  
Nitrogen Ratio ◽  
C And N

This study aims to convert the municipal solid waste (MSW), which include garbage and chicken manure as raw biodegradable organic waste to produce a compost in order to transform these materials into recommended fertilizer. The principle of aerobic composting method is a waste oxidation through holding these mixed raw materials with a ratio of 1:1 garbage and chicken manure in two units of composting, rotary unit and stationary unit with recommended Carbon/Nitrogen ratio C/N of 20:1 and pH of 6.5 with moisture content of about 40% by adding water during composting process and presence of oxygen naturally. The period time of composting process was 69 days to get normal temperature of compost bulk equal to ambient temperature and pH value as natural value using two composting units. The composting results during first 30 days shows the temperature values 59.5 and 55oC for rotary unit and stationary units that refers to microbial action of microorganism and decomposition of organic matter to energy as heat. The pH values were having acidic state during first week that refers to the formation of organic acids. The final compost characteristics show a C/N ratio of 20.8 and 22.275 for rotary and stationary units, respectively with a decrease in C% and N%, which refers to a successful composting process, where Nitrogen, Phosphor and Potassium NPK values were (1.428:1.719:4.508) % for rotary unit and (1.361:0.419:3.884) % for stationary unit and electrical conductivity of 5.5 and 6.04 mS/cm as acceptable value according to the recommended standard values.

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