Dynamics of Biogas Fermentation for Industrial Waste and Hydrolysate of Corn Stover

2012 ◽  
Vol 531 ◽  
pp. 268-271
Author(s):  
Xin Jiong Guo ◽  
Ping Wang ◽  
Hua Ya Chen ◽  
Jing Pan ◽  
Ying Long He ◽  
...  

In order to fully utilize industrial waste and corn stover, the experiments were conducted using gulonic acid waste liquor and hydrolysate of corn stover as the methane fermentation raw materials. Real time CH4 and CO2 monitors were used to analyze the anaerobic digestion process. Different temperatures, nutrition and the rates of raw material supply were adopted to investigate the optimal methane fermentation condition. Experiment results showed that both gulonic acid waste liquor and hydrolysate of corn stover were easy to produce methane with as high as 800mL biogas per gram COD biogas yield and 77% methane content under an optimum condition. The potential inhibitor, Sulfate, in the hydrolysate corn stover showed no obvious inhibition at 0.3% level. The investigation also showed that high level of substrate would cause acid production and pH diminishing and finally result in CO2 increase and CH4 decrease. These phenomena indicate that methane production bacteria are the weak portion of the anaerobic digestion system.

2020 ◽  
Vol 9 (1) ◽  
Author(s):  
Lukhi Mulia Shitophyta ◽  
Muhammad Hanafi ◽  
Yusuf Eko Nugroho

The shortage of fossil fuel can be minimized by developing renewable energies such as biogas. The raw material of biogas can be derived from corn stover. Biogas was produced under solid-state anaerobic digestion (SS-AD) and liquid anaerobic digestion (L-AD). The objectives of this study were to compare the biogas yield and analyze the pH value and VS degradation. The results reported that the SS-AD generated a higher biogas yield than L-AD. SS-AD could improve the biogas yield of 71%. Both SS-AD and L-AD had a higher final pH than the initial pH. Moreover, the VS degradation was proportionate to the biogas yield. The highest VS reduction was achieved on SS-AD. Keywords: anaerobic digestion, biogas, liquid state, solid state, volatile solid, renewable energy


2016 ◽  
Vol 11 (2) ◽  
pp. 113
Author(s):  
Heldy Juliana ◽  
Naniek Utami Handayani

Gudang adalah suatu tempat penyimpanan untuk semua barang-barang hasil produksi maupun penjualan. Fungsinya sebagai tempat penyimpanan memiliki peranan yang sangat vital. Oleh sebab itu diperlukan adanya pengaturan yang tepat dan cepat dalam penggunaan ruang gudang. CV.MDP-Semarang merupakan industri kemasan karton yang berlokasi di Semarang. Tingginya tingkat penggunaan gudang di perusahaan ini membuat effisiensi waktu dan ruang menjadi penting. Dari hasil pengamatan, CV. MDP-Semarang belum memiliki tata letak penyimpanan yang baik. Hal ini terlihat dari cara penyimpanan bahan baku di gudang yang belum mengikuti kaidah tata letak gudang. Pada gudang bahan baku, karton diletakkan secara acak sehingga menyulitkan pencarian, kapasitas gudang bahan baku saat ini dikeluhkan tidak mencukupi kebutuhan. Parameter tata letak gudang bahan baku yang baik adalah dipenuhinya ruang secara maksimal dan pemenuhan terhadap permintaan bahan baku yang lebih cepat. Pada penelitian ini, metode class-based storage dan penggunaan rak, memisahkan karton berdasarkan jenis karton di gudang bahan baku mampu memberikan peningkatan kapasitas gudang. Dengan rancangan tata letak gudang bahan baku usulan dapat meningkatkan kapasitas gudang, sehingga mampu memberikan ruang kosong untuk 64.000 pieces karton. AbstractWarehouse is a storage for all the goods of production and sales. Its function as a storage has a very vital role. Therefore it is necessary to have the proper regulations in the use of warehouse space. CV.MDP-Semarang is the carton packaging industry located in Semarang. The high level of the activity in the warehouse make time and space efficiency becomes important. From the observation, CV. MDP-Semarang do not yet have good storage layout. It is shown from raw material inventory in storage that are not following the principle of good storage layout. In the raw materials storage carton are placed randomly, so it makes the operator difficult to find the goods and the storage become out of capacity to fulfill demand. The good parameters for good storage are the optimal utility and the capapbility to fulfill raw material demands faster. In this paper, class-based storage method and shelf are used to separate carton based on type of carton in raw material storage in order to improve storage capacity. By proposes the design raw material storage layout, the company should be able to increase storage capacity, thus, it will be able to give space for 640.000 pieces of carton.


2012 ◽  
Vol 550-553 ◽  
pp. 3253-3257
Author(s):  
Xian Qi Sun ◽  
Chuan Shan Zhao ◽  
Hui Rong Yang

Hand towel is one kind of disposable tissue paper which has characteristic of soaking up water quickly and lower cost. It becomes increasingly popularity in families, at work, and public places. There are many kinds of raw materials to produce hand towel according to its level. Some researches showed that bleached chemical pulp could be partially used to the production of hand towel and some other household paper. In this study, some kinds of raw material which be used to produce hand towel were analyzed and trying to looking for new one. Poplar Extruding Mechanical Pulp (EMP) had characteristics of long fiber, high level of strength and brightness. Different ratio of poplar EMP and certain Bleached Kraft Pulp were tested to make hand towel. The effects of poplar EMP on whiteness, tensile strength, bulkiness, absorbability were discussed. The results showed that characteristic targets of hand towel made from poplar EMP and Bleached Kraft Pulp met the quality requirements of GBT22455-2009 and satisfied the high-end hand towel. The new hand towel had lower cost, higher stiffness and higher bulkiness. It was feasible from the technique and economy point.


2015 ◽  
Vol 50 (3) ◽  
pp. 163-168 ◽  
Author(s):  
MA Rouf ◽  
MS Islam ◽  
T Rabeya ◽  
Ak Mondal

An investigation was carried out for the production of biogas from dry fallen leaves. The sample was collected from BCSIR campus of Dhaka in winter. The substrate was mixed leaves mainly mahogany (75%), eucalyptus (10 %) and rain tree (15 %) leaves. The study was carried out by whole leaves and crushed leaves directly followed by aerobic pretreatment at 8% total solid (TS) concentration. The raw materials were fed into two liter capacity glass bottle bio digester on batch basis for 60 days at ambient temperature. Different proportion of substrate and cow dung were mixed to get the optimum mix for maximum yield of biogas. The biogas reactor containing 6% crushed and pretreated leaves mixed with 2% cow dung (on 8% TS basis) gave maximum (0.199 l/g) biogas yield. The biogas yield from leaves without pretreatment was found to be too low (0.0106 l/g) for 8%. The COD reduction, VS reduction and methane composition of two biogas reactors have been determined where biogas yield were relatively higher. The maximum methane content of the biogas was found to be about 69.3%.Bangladesh J. Sci. Ind. Res. 50(3), 163-168, 2015


2011 ◽  
pp. 465-480
Author(s):  
Selena Vitezovic

Technology studies have always been the most important focus of archaeology, as a science which analyzes human past through the study of material culture. To say that something is technological in archaeology, means to put the concept of technology in the centre of theoretical studies, and to study not only the form of the object, but also the entire sequence of technological factors, from raw material choice, mode of use, up to the reasons for abandonment. The concept of technology in anthropology and archaeology is based on the original meaning of the word ????? in ancient Greek, meaning the skill, i. e., to study how something is being done. Such a concept of technology as a skill or mode of doing something was for the first time outlined by the French anthropologist Marcel Mauss, whose starting point was that every technological statement was at the same time social or cultural statement and that technological choices have social foundations. Pierre Lemonnier further developed the anthropology of technology, focusing on the question of technological choices, as well as numerous other anthropologists. In archaeology, the most important contribution to the study of technology was the work of Andr? Leroi-Gourhan, who created the concept of cha?ne op?ratoire, as an analytical tool for studying the mode of creating, using and discarding an artefact, starting with raw material acquisition, mode of manufacture, final form, use (including caching, breaking and repairing) up to the final discarding. It is not only about reconstructing the algorithmic sequence of operations in creating one object, but it is a complex analysis of operational chain within one society which includes the analysis of technological choices. The analyses of technologies today include a variety of different approaches, most of them with emphasis on the cultural and social aspects of technology. The analysis of bone industry in the Early and Middle Neolithic in central Balkans (Starcevo culture), which included not only final objects, but also manufacture debris and semi-finished products, revealed a well developed industry, with a high level of technological knowledge on the properties of raw materials, skillful manufacture, well organized production, as well as possibility of a certain degree of specialization on the micro and macro level (within one settlement and within a group of settlements). Both raw material choices and manufacturing techniques, as well as the final forms, demonstrated a high standardization level. Also certain symbolic value was attributed to some raw materials, and there is a possibility that skill itself was valued. Further analyses of multiple technologies will help in reconstructing the organization of production, social and economic aspects in Neolithic societies, as well as the role of technology in everyday and ritual life.


Author(s):  
U.S.P.R. Arachchige

Bioenergy, which originated from agricultural crop residue and industrial waste, has been studied for sustainable energy generation. As a raw material for briquettes production, agricultural-crop residue, industrial waste, sewage, sludge, or other plants can be used. Briquettes have numerous advantages as they directly help to reduce waste generation and handling. The possibilities of the briquetting, qualities, and other essential factors for briquette production have been discussed. The alternative methods of Briquetting have been addressed with the comparison. The characteristics of the raw materials for briquettes production have been discussed to identify the best agricultural crop residue for briquettes. The properties of binding agents for the briquetting process have been discussed to identify the most practically available binding agent.


2020 ◽  
Vol 18 (4) ◽  
pp. 561-564
Author(s):  
Anja Antanasković ◽  
Maja Bulatović ◽  
Marica Rakin ◽  
Zorica Lopičić ◽  
Tatjana Šoštarić ◽  
...  

Anaerobic digestion is a natural process of organic material degradation by different kinds of microorganisms in the absence of oxygen. This process is used for industrial purpose to manage waste streams or to produce biogas. It gives a major contribution in reduction of harmful effects of organic waste disposal to the environment. The aim of agricultural waste pretreatment in biogas production is to decrease the retention time, improve utilization of raw material and improve the overall productivity and energy efficiency of the production process. In this paper the effects of combined chemical and mechanical pretreatment of corn straw biomass on biogas yield during anaerobic digestion of the feedstock were analyzed. The impact of pretreatment and process parameters in biogas production was analyzed by process simulation using the software SuperPro Designer. Using this tool, it was shown that alkaline pretreatment leads to an decrease of degradation time along with an increase in biogas yield.


2018 ◽  
Author(s):  
Sh.V. Gasparyan ◽  
S.A. Maslovskii

Приоритет Стратегии развития пищевой и перерабатывающей промышленности Российской Федерации до 2020 года – обеспечение населения страны безопасным и качественным продовольствием. Сырьевая база овощеперерабатывающей промышленности – основа производства. Как инвесторы, так и государство предпринимают конкретные меры для решения проблем. Вместе с тем, несмотря на динамику улучшения, многие проблемы остаются нерешенными. Темпы роста производства овощного сырья недостаточны для промышленности и сдерживают рост производства из отечественного сырья. Это объясняет высокий уровень импорта.The priority of the Strategy of development of the food and processing industry of the Russian Federation until 2020 is to provide the population with safe and quality food. The raw material base of the vegetable processing industry is the basis of production. Both investors and the state are taking concrete measures to solve the problems. However, despite the momentum for improvement, many challenges remain. The growth rate of vegetable raw materials production is not enough for the industry and hinders the growth of production from domestic raw materials. This explains the high level of imports.


2014 ◽  
Vol 1001 ◽  
pp. 368-372
Author(s):  
Miroslava Netopilová ◽  
Jan Mikulenka ◽  
Anna Benešová

The article focuses on the research and development of a new composite material applicable in building industry, renewable raw material resources and industrial waste materials. The aim of the research is not only the application of concrete secondary raw materials but also the gaining of required safety aspects of these composite materials, i.e. certain fire technical characteristics.


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