Smoke Yields Research Articles

Liquid Smoke Yield Grade 3, Grade 2 and Grade 1 from Five Different Types of Plants

This research was motivated by the lack of optimal use of leaves in forest plants, while there are many types of leaves in the forest. One use of leaves is to use them as raw material for making liquid smoke. This research was conducted to determine the yield of liquid smoke on forest plant species from their leaves. The research method used is the pyrolysis method with indirect combustion. This research was carried out by treating forest plant raw materials, namely kerai paying leaves (Filicium decipiens L.), bungur leaves (Lagerstroemia speciosa), mahogany leaves (Swietenia macrophylla King), teak leaves (Tectona grandis) and sungkai leaves (Peronema canecens Jack). The results of the research showed that the results of liquid smoke from the 5 types of plant leaves, namely sungkai leaves, had the highest grade 3 yield of 23.83% and the lowest grade 3 yield, namely mahogany leaves, of 17.81%. In grade 2 sungkai leaves the highest percentage was 21.12% and mahogany leaves had the lowest yield with a percentage of 16.18%. Meanwhile, in grade 1, sungkai leaves have the highest yield percentage of 19.33% and mahogany leaves have the lowest yield, namely 15.03%.

Optimization and Characterization of Liquid Smoke Produced by Terminalia catappa Wood Pyrolysis and its In Vitro Antifungal Activity

This research utilized response surface methodology (RSM) to explore how the yield of liquid smoke obtained from ketapang wood (Terminalia catappa) is influenced by the size of wood particles and the temperature of pyrolysis. Gas chromatography-mass spectrometry (GC-MS) was used to characterize the liquid smoke. To assess liquid smoke’s antifungal effects, a petri dish bioassay was conducted using 1.0-4.0% (v/v) concentrations against Schizophyllum commune. RSM was applied to optimize vinegar from T. catappa by varying the wood particle size and the pyrolysis temperature. The optimal yield, 24.67%, was obtained with a 3.22 mm particle size and a 425°C pyrolysis temperature. The liquid smoke produced at 400-450°C completely inhibited of S. commune growth at 2.0-4.0%. The primary components of the liquid smoke at 400°C were 2-methoxy- phenol (24.85%), creosol (8.39%), 4-ethyl-2-methoxy- phenol (7.21%), 2-5-methyl-furancarboxaldehyde (4.55%), and 4-ethyl-2-methoxy-phenol (3.74%). The primary components at 425°C were 2-methoxy-phenol (25.60%), creosol (15.15%), 5-methyl-2 furancarboxaldehyde (12.75%), and 2,6-dimethoxy-phenol (9.31%). At 450°C, the main components were 2-methoxy-phenol (25.26%), 4-ethyl-2-methoxy-phenol (8.46%), creosol (8.40%), 5-methyl-2-furancarboxaldehyde (4.02%), and 4-ethyl-2-methoxy-phenol (3.98%).

Effect of Pyrolysis Temperature and Time on Liquid Smoke Yield in Coconut (Cocos nucifera L.) Shells Pyrolysis Process

Biomass pyrolysis is an emerging method to manage solid biomass from agricultural activity, which transforms solid organic materials thermally to create solid, liquid, and non-condensable gases as its product. This research was conducted to understand the effect of pyrolysis temperature and time on the yield of liquid smoke from coconut shell biomass. In this work, the pyrolysis was performed with temperatures of 350°C, 450°C, and 550°C, with a pyrolysis time of 2, 3, and 4 hours. Based on this work, it is known that both pyrolysis temperature and time affected the yield of liquid smoke. The liquid smoke obtained at temperature pyrolysis of 350°C for 4 hours yields 46,5%, with density of 1.025 g/ml, viscosity of 1,555 cP, and pH of 2. GC-MS characterization revealed the 20 components in obtained liquid smoke, including organic acids, carbonyl compounds, phenolic compounds, and another compound. Acetic acid is the dominant component, up to 51.40%.

Optimization of pyrolytic oil production from coconut shells by microwave-assisted pyrolysis using activated carbon as a microwave absorber

Coconut shell waste pollutes the environment and affects public health. Converting coconut shell waste to pyrolytic oil (liquid smoke) with antimicrobial properties using microwave-assisted pyrolysis and activated charcoal as an absorbent is a promising solution. The purpose of this study is to investigate the process factors involved in the manufacture of coconut shell pyrolytic oil (liquid smoke) using microwave-assisted pyrolysis, to identify the chemical components in coconut shell pyrolytic oil, and to optimize the process factors using a face-centered central composite design (FCCD). This study further used coconut shells of various sizes (1–3 mm) and employed microwave-assisted pyrolysis with different power levels (300–600 W) and pyrolysis times (5–30 min). The results revealed that the pyrolytic oil (liquid smoke) yield increased as the time and microwave power increased but decreased as the size of the materials decreased. The optimum yield obtained was 34.6% at the following conditions: power of 593.6 W, material size of 2.9 mm, and heating time of 28.5 min. The analysis of the components of the volatile compounds in the pyrolytic oil (liquid smoke) product obtained from gas chromatography-mass spectrometry (GC–MS) analysis identified a total of 14 chemical components in coconut shell pyrolytic oil (liquid smoke) at 300 W, 15 compounds at 450 W, and only 5 components at 600 W. Among these compounds, phenol, dimethoxy phenol, guaiacol, hydroxyanisole, and methoxyphenol were found to have the highest concentrations. The outcomes of this study offer valuable contributions to the development of pyrolytic oil (liquid smoke) products with enhanced quality, flavor, and potential applications in the food industry

Effectivity of Inhibition of Oil Palm Empty Fruit Bunches Liquid Smoke Against Ganoderma boninense Fungus In Vitro

Oil palm empty fruit bunches (OPEFB) can be processed into liquid smoke through pyrolysis. This study aimed to obtain the best concentration of unpurified liquid smoke from OPEFB in inhibiting the growth of the fungus of Ganoderma boninense. OPEFB samples were obtained from PT. Citra Putra Kebun Asri and G. boninense were collected from Muara Teweh Plantation. The study was conducted in 2 stages; Analysis of liquid smoke from pyrolysis using the GC-MS method at the Organic Chemistry Laboratory, Faculty of Mathematics and Natural Sciences, Gadjah Mada University; and testing the inhibition of liquid smoke on G. boninense in vitro at the Basic Plantation Cultivation Laboratory, Hasnur Polytechnic, and the Microbiology Laboratory of Plantation Products Processing Technology, Muara Teweh Polytechnic. This study was conducted in a completely randomized design with four treatments and six replications. The treatment was the difference in concentration of liquid smoke (1 ml/AC1, 2 ml/AC2, 3 ml/AC3, and control/AC0) in the planting medium, potato dextrose agar (PDA). The results showed that the average yield of unpurified liquid smoke from OPEFB was 34.5%, containing 49.28% acetic acid, 11.57% methyl alcohol, and 9.10% phenol. Application ? 2 ml liquid smoke in PDA completely inhibited G.boninense's growth in vitro, starting three days after application.

A Coupled Wildfire-Emission and Dispersion Framework for Probabilistic PM2.5 Estimation

Accurate representation of fire emissions and smoke transport is crucial for current and future wildfire-smoke projections. We present a flexible modeling framework for emissions sourced from the First Street Foundation Wildfire Model (FSF-WFM) to provide a national map for near-surface smoke conditions exceeding the threshold for unhealthy concentrations of particulate matter at or less than 2.5 µm, or PM2.5. Smoke yield from simulated fires is converted to emissions transported by the National Oceanic and Atmospheric Administration’s HYSPLIT model. We present a strategy for sampling from a simulation of ~65 million individual fires, to depict the occurrence of “unhealthy smoke days” defined as 24-h average PM2.5 concentration greater than 35.4 µg/m3 from HYSPLIT. The comparison with historical smoke simulations finds reasonable agreement using only a small subset of simulated fires. The total amount of PM2.5 mass-released threshold of 1015 µg was found to be effective for simulating the occurrence of unhealthy days without significant computational burden.

Thermal management ability and flame retardancy of silicone rubber foam filled with flame retardant phase change capsules

A novel phase change capsule with layered double hydroxide (LDH) modified SiO2 shell (named M-EPCM) was designed and prepared, which was used to improve the thermal regulation performance and flame retardancy of silicone rubber foam (SRF). The SRF-3 composite containing 18 wt% M-EPCM presented greatly improved thermoregulation ability, and excellent thermal reliability even after 100 cycles. Besides, SRF-3 also exhibited excellent flame retardancy, with the limiting oxygen index exceeding 31.0%, reduced peak heat release rate (36.4%) and low total smoke yield (13.8 m2). The flame retardant mechanism analysis revealed that barrier effect, catalytic crosslinking and polyaromatic reaction provided by LDH played an important role. Moreover, SRF composites have outstanding mechanical properties, especially SRF-3 which showed a 150% and 85% increase in tensile strength and compression strength compared with pure SRF, respectively. This article provides a new idea for further application of LDH in the field of thermal management.

ANALISIS DAN PERANCANGAN ALAT ASAP CAIR MENGUNAKAN SISTEM PENDINGIN KONDENSOR TIPE SPIRAL

Liquid smoke consists of phenolic compounds, carbonyl compounds, acids, water, tar compounds, and benzopyrene. Natural wood material consisting of hemicellulose, cellulose, and lignin decomposes at high temperatures into more than 300 compounds consisting of more than 70 types of carbonyls as ketones and aldehydes, 20 types of acids, 11 types of furans, 45 types of phenols, 13 types of alcohols and esters. , 12 types of polycyclic aromatic carbon, and 13 types of lactones.
 The research method is by designing tools, and cutting/making liquid smoke tools, then drying them in the sun to be completely dry, Weighing the coconut material before putting it into combustion, assembling and connecting the house pipe hose from the reactor to the tar to the condenser pipe, making sure there are no the leak between the connections, before being put in the combustion furnace, turn on the fire in the reactor tube, install the condenser pipe in the condenser tube and fill the water in the condenser tube, record the results of liquid smoke every 8 hours and fill the material into the combustion tube.
 From the results of the research that has been carried out, there are differences in the results of liquid smoke obtained, then the charcoal results obtained, there is a difference in weight produced between the previous tool and the tool that is now designed, the most influencing factor is the condenser design, where the condenser can cool the smoke that comes out , due to the long cooling cycle that affects the results. The results obtained on the previous tool were 3.754 ml of liquid smoke, 6.5 kg of residual charcoal, and liquid smoke yield of 12.5% ​​with a burning time of 48 hours, and the production rate of liquid smoke was 78.2 ml/hour. The results of the research obtained on the new tool produced 7.095 ml of liquid smoke, 5.6 kg of residual charcoal, and 23.6% yield of liquid smoke with a burning time of 48 hours, and the production rate of liquid smoke was 147.8 ml/hour.

Preparation and Characterization of Liquid Smoke from Wood Sawdust Azadirachta excelsa (Jack) M. Jacobs and its Application as a Natural Rubber Coagulant

Azadirachta excelsa (Jack) M. Jacobs (AE) sawdust is a waste from the furniture industry that is not utilized and causes environmental problems. AE sawdust that contains cellulose, hemicellulose, and lignin can be used as liquid smoke for various applications. This study aims to perform the production, characterization, and application of liquid smoke as a latex coagulant. AE liquid smoke was produced at ± 300-350 °C by pyrolysis temperature for 6 hours. The yield of AE liquid smoke was 30.59% with characteristic smoke in odor, reddish brown in color, the pH value was 3.58 ± 0.015, specific gravity was 1.08 g/mL, and total organic acid contain was 10.410 ± 0.2%. FTIR spectrum of liquid smoke shown OH, C=O and C-O stretching vibrations of carboxylic acids. The results showed that along with the increase in the concentration of AE liquid smoke that latex coagulation timing was accelerated. Interestingly, at a concentration of 14% AE liquid smoke demonstrated a faster coagulation time than the positive control. The application of AE liquid smoke into the latex was accelerated the coagulation time, removing unpleasant odors from natural rubber, and improving the latex texture but changing the color of natural rubber from white to grey and it might be a substitute for formic acid as a natural rubber latex coagulant.

Phthalocyanine zirconium diazo passivation of black phosphorus for efficient smoke suppression, flame retardant and mechanical enhancement

The existence of lone pair electrons on the surface of black phosphorus (BP) is a good electron acceptor, which has good structural stability when it forms new electron donor-electron acceptor pairs when combined with electron donators such as phthalocyanine. In order to bond functional groups available for reaction on the surface of BP, the lamellae group density was increased by functionalizing BP with benzoic acid diazonium salt, and then the carboxylated BP was covalently grafted with phthalocyanine zirconium, and finally the phthalocyanine-zirconium polyphosphazene functionalized BP (BP-ZrPZN) was obtained by crosslinking reaction. Subsequently, BP-ZrPZN was added into the EP matrix as nano filler to form the reinforced system. The results showed that the thermal stability and fire safety of EP composites containing 2 wt% BP-ZrPZN were significantly improved. The peak heat release rate and total heat release rate were reduced by 56.8 % and 54.1 %, respectively, and the limited oxygen index was up to 33 % and UL94 value was V-0. In addition, the presence of BP-ZrPZN greatly improved the ability of BP to inhibit toxic smoke. The total smoke yield of EP composites decreased by 62.7 %. The tensile strength and impact strength increased by 36.1 % and 50.6 % respectively. Therefore, the functional strategy of phthalocyanine in this work will provide a reasonable and feasible way to optimize the flame retardancy and smoke suppression effect of BP.

Hydrogen Cyanide and Aromatic Amine Yields in the Mainstream Smoke of 60 Little Cigars.

Mainstream smoke yields of hydrogen cyanide (HCN) and three aromatic amines, 1-aminonaphthalene, 2-aminonaphthalene, and 4-aminobiphenyl, from 60 little cigar brands currently on the US market were measured for both International Organization for Standardization (ISO) and Canadian Intense (CI) smoking regimens. The smoke yields are compared with those from 50 cigarette products measured by Counts et al. of Philip Morris USA (PMUSA) in 2005 [Counts et al. Regul. Toxicol. Pharmacol. 2005 41, 185-227] and 50 cigarette products measured by the Centers for Disease Control and Prevention (CDC) in cooperation with the Food and Drug Administration (FDA) in 2012 [Tynan et al. Consumption of Cigarettes and Combustible Tobacco: United States, 2000-2011. In Morbidity and Mortality Weekly Report; Centers for Disease Control and Prevention, 2012; 565-580]. For the little cigars, the average HCN yield with the ISO smoking regimen is 335 μg/cigar (range: 77-809 μg/cigar), which is 332% higher than the average of 50 PMUSA 2005 cigarettes and 243% higher than the average of 50 CDC/FDA 2012 cigarettes. For the CI smoking regimen, the average HCN yield is 619 μg/cigar (range: 464-1045 μg/cigar), which is 70.5% higher than the average of 50 PMUSA 2005 cigarettes and 69% higher than the average of the 50 CDC/FDA 2012 cigarettes. For aromatic amines, the average ISO smoking regimen smoke yields are 36.6 ng/cigar (range: 15.9-70.6 ng/cigar) for 1-aminonaphthalene, 24.6 ng/cigar (range: 12.3-36.7 ng/cigar) for 2-aminonaphthalene, and 5.6 ng/cigar (range: 2.3-17.2 ng/cigar) for 4-aminobiphenyl. The average ISO yields of aromatic amines from little cigars are 141% to 210% higher compared to the average yields of 50 PMUSA cigarettes. The average CI smoke regimen yields are 73.0 ng/cigar (range: 32.1-112.2 ng/cigar) for 1-aminonaphthalene, 45.2 ng/cigar (range: 24.6-74.8 ng/cigar) for 2-aminonaphthalene, and 12.7 ng/cigar (range: 5.5-37.5 ng/cigar) for 4-aminobiphenyl. The average CI aromatic amine yields are 143% to 220% higher compared to the average yields of 50 PMUSA cigarettes, almost identical to the relative yields under the ISO smoking regimen. Both HCN and aromatic amine yields are 1.5× to 3× higher for the tested little cigars than for the conventional cigarettes; however, there are notable differences in the relationships of these yields to certain product characteristics, such as weight, ventilation, and tobacco type. The higher smoke yields of these compounds from little cigars indicates that cigar smokers may be at risk of a higher exposure to HCN and aromatic amines on a per stick basis and thus increased health concerns.

Optimization of Liquid Smoke from Shorea pachyphylla using Response Surface Methodology and its Characterization

The present study aims to optimize the processing variables producing liquid smoke from mabang wood (Shorea pachyphylla) by using Response Surface Methodology (RSM). In this investigation, a design of experiment with different combinations of pyrolysis temperature and pyrolysis time on the liquid smoke yield from mabang wood was applied. The response of the optimal yield, temperature, and time of pyrolysis was predicted using a mathematical model. The optimal operating conditions for the process of yielding 31.31% liquid smoke were identified at the pyrolysis temperature of 440◦C and pyrolysis time of 124 minutes. The effect of pyrolysis temperature was more significant than the pyrolysis time (p<0.05). The liquid smoke samples were evaluated by a GC-MS. The main chemical compound of the liquid smoke were 1,2-ethanediol (19.26%), fluoromethane (6.69%), formic acid (4.96%), 2-propanone (4.17%), acetic acid (18.64%), acetol (4.80%), furfural (9.94%), 2,4-hexadecanoic acid (3.45%), and guaiacol (2.93%).

An experimental study of liquid smoke and charcoal production from coconut shell by using a stove of indirect burning type

The quality of liquid smoke and charcoal product yield can be improved by conducting pyrolysis process through indirect heating process. However, a great huge of energy is required to reach the exact operating temperature. In this experiment, slow pyrolysis of coconut shell is performed for liquid smoke and charcoal production using indirect method where the feedstock is just heated in a tube by using LPG as the heat source. The effect of feedstock size and the operating temperature on the liquid smoke and charcoal yields are investigated by varying the coconut shell sizes in the ranges of 1 to 7 cm2, while the operating temperature is expected as low as possible to reduce the energy required. The optimum process conditions for maximizing the two products yields and quality were also identified to meet the user requirement. The various characteristics of liquid smoke obtained under the optimum conditions for maximum yield are identified based on standard test methods. Data from a simple way of charcoal and liquid smoke production during preliminary research of this study indicated that the coconut shell sizes, and the operating temperatures are the crucial parameter during process.

Karaktristik proses destilasi asap cair grade 3

Distillation of liquid smoke is a process of heating liquid smoke based on the difference in its boiling point and then cooled to get liquid smoke with better quality. This heating aims to separate unwanted components in liquid smoke such as tar and benzopyrene. The process is strongly influenced by several things such as temperature and distillator. From these two measurements, several characteristics such as heating rate, distillation flow rate of liquid smoke, production capacity, heating temperature, steam temperature and distillation time, as well as the characteristics of the resulting liquid smoke can be known.The purpose of this study is to determine the characteristics of the 3rd grade liquid smoke distillation process with electric heating and water cooling condenser which includes the production capacity of liquid smoke and to determine the quality and quantity of liquid smoke, heating rate, electricity consumption, flow rate and to determine the efficiency of 2nd grade liquid smoke production.This research was conducted at the Laboratorium Teknik Mesin Universitas Muhammadiyah Metro, this study used a distillation apparatus made of Aluminium plate 1 mm thick, 180 mm in diameter, 250 mm high. Condenser with 0.5 inch diameter copper pipe 3,5 m long, 3 inch diameter PVC pipe, 3m long. The raw material for 3rd grade liquid smoke is 3 liters.The results obtained that the distillation apparatus has a capacity of 3 liters, the distillation temperature affects the rate of heating that occurs, namely the distillation temperature of 110oC, the heating rate is 707,42 J/second, the electricity consumption is 4,48kWh, the time is 45 minutes, and for a temperature of 120 oC the heating rate is 754,60 J/second, electricity consumption is 4,467 kWh in 65 minutes. The highest yield of liquid smoke is at a temperature of 110 oC, which is 2840 ml with a flow rate of 8,35 ml/minute and an efficiency of 94,6%, pH level of 2,15. And for a temperature of 120 oC it produces 2560 ml of liquid smoke, with a flow rate of 8,67 ml/minute and an efficiency of 85,3%, with a pH level of 2,10.

Characteristics of Liquid Smoke of Red Fruit (Pandanus conoideus. L.) Waste with Pyrolysis Method and Potentially as Biopesticide

This study aims to determine the yield and quality of liquid smoke in the form of pH values, acid levels, and phenol levels from the burning of red fruit seed waste as raw material for grade 3 liquid smoke using pyrolysis equipment. Liquid smoke is used as an alternative food preservative and flavor enhancer that it can use in the food processing industry to minimize the use of harmful preservatives such as formalin. But it also can be used as a biopesticide in agriculture so that it becomes an alternative to chemical pesticides in controlling pests. It was researched at the Research Laboratory of the Chemical Engineering Department FTI UMI Makassar in July 2020 and the Agrotechnology Laboratory of the Petra Baliem Wamena Agricultural Science College in April 2021. The research activity began by making grade 3 liquid smoke because liquid smoke can be used as a biopesticide at this level. Then proceed with the analysis of the chemical and physical content of liquid smoke. The research method used was an experimental method with six replications on the amount of red fruit seed waste 500 g, 1000 g, and 1500 g. The pyrolysis process was carried out at temperatures ranging from 300-400ºC for 180 minutes. The results of the observations from the tests carried out showed that the liquid smoke of red fruit seed waste produced was more in the weight or quantity of red fruit seed waste 1000 g was BM2 treatment which had a pH value of 3.35, the acid content of 14.20%, total phenol content of 4.91%, quite brown. Thick and smells like liquid smoke. The high levels of acid ranging from 13.73-14.20% and high levels of phenol ranging from 4.91-5.11% compared to previous studies with raw materials for liquid smoke of rice husks, coconut shells, and organic waste, made the liquid smoke of red fruit seed waste as a biopesticide with repellant and anti-inflammatory properties. Insects ate them because acids and phenols can provide an aromatic that insects do not like.

The Effects of Cigarette Filter Ventilation on Delivery and Retention of Organic Acids

Summary A method for simultaneous identification and quantitative determination of 30 organic acids was established. The smoke yields and filter retentions of organic acids and routine smoke components, total particulate matter (TPM), nicotine-free dry particulate matter (NFDPM), nicotine and carbon monoxide (CO) at different filter ventilation levels were determined under both International Organization for Standardization (ISO) and Health Canadian Intense (HCI) smoking regimes. As a result of smoke dilution during filter ventilation, the yields of all organic acids were reduced in mainstream cigarette smoke. The spatial distribution pattern of the concentration of each organic acid in the filter was investigated at different ventilation levels and their filter retention determined. On one hand, the concentration of organic acids with a lower boiling point (BP) and lower molecular weight (MW) was relatively higher at the smoking end and the periphery part of the filter and spatial concentration distributions within the filter were significantly affected by smoke diffusion. On the other hand, those acids with high BPs and high MW were mainly distributed at the tobacco rod end and central part of the filter and spatial concentration distributions were only slightly influenced by their smoke diffusion within the filter whilst air compression around the filter vents also led to less change. This way, different acids in mainstream cigarette smoke were reduced to different extents which can also influence the acid-base equilibrium and sensory quality of the smoke. Compared with ISO smoking regime, the vent blocking and more intense smoking HCI regime led to different extents of yield increase for each of the studied acids. The effect of filter ventilation in the HCI smoking regime was not investigated, as the HCI smoking regime requires blocked ventilation holes. [Contrib. Tob. Nicotine Res. 30 (2021) 199–211]

Characterization of Burning Behaviors and Particulate Matter Emissions of Crop Straws Based on a Cone Calorimeter.

Crop residue burning is one of the major sources of particulate matter (PM) in the air. The burning behaviors and PM emissions of the three typical crop residues (rice straw, wheat straw, corn straw) in China were characterized by a cone calorimeter (CONE) coupled with a laser dust meter. The water-soluble compounds, carbonaceous content, and morphology of PM were measured by ion chromatography, elemental analyzer, transmission electron microscopy (TEM) and energy-dispersive X-ray spectrometer (EDS). The results showed that thermal stability of corn straw was the worst among the three crop straws. The heat release rate (HRR) curves of the three crop straws were the typical curves of thermally thick charring (residue forming) samples. Wheat straw had the highest smoke yield, which was 2.9 times that of rice straw. The PM emission factor of wheat straw was 180.91 µg/g, which was about three times that of rice straw. The contents of K+, Na+, and Cl− in PM were significantly higher than those of the other six water-soluble inorganic ions. The ratio of organic carbon and elemental carbon (OC/EC) ranged from 14.82 to 30.82, which was similar to the results of open burning. There were mainly three kinds of aggregates in the PM of crop straws: network, chain-like, and soot. Individual particles were mixtures of KCl and organic matters. Core-shell structures were found in PM of rice straw and corn straw. The results in this study were provided based on CONE, an ISO-standard apparatus, which could avoid data conflicts caused by the difference of combustion devices. The relationship between the burning behavior and PM emission characteristics of crop straws was established, which is helpful to understand emissions of crop straws and to find a novel way to solve the problems from the burning of crop residues.

Volatile Organic Compounds in Mainstream Smoke of Sixty Domestic Little Cigar Products.

The mainstream smoke yields of five volatile organic compounds (VOCs) were determined from 60 commercial U.S. little cigar products under ISO 3308 and Canadian Intense (CI) smoking regimens on linear smoking machines using a gas sampling bag collection. The five VOCs, 1,3-butadiene, acrylonitrile, benzene, isoprene, and toluene were analyzed using an automated GC/MS analytical method validated for measuring various VOCs in mainstream smoke. The VOCs range in amounts from micrograms to milligrams per little cigar. VOC deliveries vary considerably among the little cigar products under the ISO smoking regimen primarily due to varying filter ventilation. Under the CI smoking regimen where filter ventilation is blocked, the delivery range narrows, although individual and total VOC yields are approximately 2 fold higher than those under the ISO smoking regimen. Correlation analysis reveals strong associations between acrylonitrile and 1,3-butadiene or toluene under the ISO smoking regimen. Compared to cigarettes, little cigars delivered substantially higher VOC mainstream smoke yields under both ISO and CI smoking regimens. Moreover, little cigar smoke also contains higher VOCs than cigarette smoke when adjusted for mass of tobacco.

Effect of nitrogen gas flowing continuously into the pyrolysis reactor for simultaneous production of charcoal and liquid smoke

Biomass waste such as sawdust or red fruit seed waste can be processed into charcoal (carbonized charcoal) and liquid smoke simultaneously by the pyrolysis method. The charcoal process using the pyrolysis method will be more perfect if the reactor is designed in such a way that oxygen from the air is not free to enter the reactor. The small amount of oxygen that is present and enters the reactor can be minimized by flowing inert nitrogen gas into the reactor continuously during pyrolysis. In this study, the effect of flowing nitrogen gas into the pyrolysis reactor was observed with a gas flow rate of 1 liter/minute using raw materials from wood sawdust biomass waste with a pyrolysis time of 2 hours and a pyrolysis temperature of 400 oC. The results showed that the quality of charcoal products was relatively better. The yield of liquid smoke was higher than the results of pyrolysis with nitrogen gas flow compared to without nitrogen gas flow. The calorific value of charcoal without and with nitrogen gas flow is 6828 cal/gram and 7109 cal/gram, respectively, the fixed carbon value is 68.37% and 70.40% respectively, and the yield of liquid smoke is 38.87% and 40.35%, respectively.

Comparison of Types and Size of Biomass on Pirolysis Combustion Toward The Results of Bio-Charcoal and Liquid Smoke

Biomass is a renewable carbon source and can be processed into gas fuels, liquid and solid fuels. Biomass has several types with different grain sizes. Biomass can be converted to other forms of energy by combustion pyrolysis. Pyrolysis is the chemical decomposition of organic matter through a heating process at high temperatures with little or no oxygen. The results of the pyrolysis process in the form of bio-charcoal and liquid smoke. The purpose of this research was to determine the comparison of types and sizes of biomass in pyrolysis combustion with characteristics of bio-charcoal and liquid smoke. This research method uses rubber shell biomass waste, green coconut husk and rice husk. Biomass is burned by slow pyrolysis in the reactor with biomass fuel. Combustion in reactors and pitot tubes containing biomass. Measured temperature, time, amount of biomass, bio-charcoal and liquid smoke and the heating value of bio-charcoal. The research results obtained the heating value of rubber shell bio-charcoal at 6661.55 cal / gr, bio-charcoal yield of 2.3 kg, liquid smoke yield of 0.242 kg, green coconut husk biomass heating value amounted to 5388.56 cal/gr, the yield of 1.8 kg of bio-charcoal, the result of liquid smoke of 0.308 kg. and rice husk biomass obtained the heating value of 3626.48 cal/gr with a bio-charcoal yield of 1.3 kg resulting from liquid smoke of 0.284 kg.
 Keywords: Combustion, Pyrolysis, Liquid Smoke, Charcoal, Biomass