Effect of Hydrothermal Pretreatment on Kitchen Waste for Biodiesel Production Using Alkaline Catalyst

2016 ◽  
Vol 8 (2) ◽  
pp. 369-377 ◽  
Author(s):  
Chunming Wang ◽  
Senyang Xie ◽  
Meixin Zhong
Keyword(s):  
Hydrothermal Pretreatment ◽  
Biodiesel Production ◽  
Kitchen Waste ◽  
Alkaline Catalyst

Cultivation of microalgae using anaerobically digested effluent from kitchen waste as a nutrient source for biodiesel production

2018 ◽  
Vol 115 ◽  
pp. 276-287 ◽  
Author(s):  
Lijie Zhang ◽  
Juan Cheng ◽  
Haiyan Pei ◽  
Jianqiang Pan ◽  
Liqun Jiang ◽  
...  
Keyword(s):  
Biodiesel Production ◽  
Kitchen Waste ◽  
Nutrient Source

scholarly journals Enhancement of Biodiesel Production from Marine Alga,Scenedesmussp. throughIn SituTransesterification Process Associated with Acidic Catalyst

2014 ◽  
Vol 2014 ◽  
pp. 1-11 ◽  
Author(s):  
Ga Vin Kim ◽  
WoonYong Choi ◽  
DoHyung Kang ◽  
ShinYoung Lee ◽  
HyeonYong Lee
Keyword(s):  
Reaction Time ◽  
Biodiesel Production ◽  
Matrix Analysis ◽  
Solvent Ratio ◽  
Alkaline Catalyst ◽  
Catalyst Amount ◽  
Acidic Catalyst ◽  
Lipid Weight ◽  
Level 2

The aim of this study was to increase the yield of biodiesel produced byScenedesmussp. throughin situtransesterification by optimizing various process parameters. Based on the orthogonal matrix analysis for the acidic catalyst, the effects of the factors decreased in the order of reaction temperature (47.5%) > solvent quantity (26.7%) > reaction time (17.5%) > catalyst amount (8.3%). Based on a Taguchi analysis, the effects of the factors decreased in the order of solvent ratio (34.36%) > catalyst (28.62%) > time (19.72%) > temperature (17.32%). The overall biodiesel production appeared to be better using NaOH as an alkaline catalyst rather than using H2SO4in an acidic process, at 55.07 ± 2.18% (based on lipid weight) versus 48.41 ± 0.21%. However, in considering the purified biodiesel, it was found that the acidic catalyst was approximately 2.5 times more efficient than the alkaline catalyst under the following optimal conditions: temperature of 70°C (level 2), reaction time of 10 hrs (level 2), catalyst amount of 5% (level 3), and biomass to solvent ratio of 1 : 15 (level 2), respectively. These results clearly demonstrated that the acidic solvent, which combined oil extraction within situtransesterification, was an effective catalyst for the production of high-quantity, high-quality biodiesel from aScenedesmussp.

scholarly journals Utilization of fish oil for biodiesel production

2010 ◽  
Vol 5 (1) ◽  
pp. 15
Author(s):  
Tri Nugroho Widianto ◽  
Bagus Sediadi Bandol Utomo
Keyword(s):  
Air Pollution ◽  
Fish Oil ◽  
Reaction Kinetics ◽  
Alternative Energy ◽  
Fossil Fuel ◽  
Fish Meal ◽  
Industrial Wastes ◽  
Biodiesel Production ◽  
Alkaline Catalyst ◽  
Fossil Fuel Consumption

Recenty fossil fuel consumption gradually increases, resulting in decreases of its naturalresource and causing environmental problems such as air pollution and global warming.Attempts to overcome the problems have been made to create on alternative energy such asbiodiesel from jatropha, microalgae and fish oil. Biodiesel production, as matter of fact, can beconducted using industrial wastes of fish meal, fish fillets and fish canning by transesterification offish oil using methanol and alkaline catalyst. Transesterification reaction kinetics must beconsidered for an efficient process. Transesterification rate constant very much depends on thetemperature and the quantity of the catalyst

scholarly journals Stochastic Programming of Sustainable Waste Cooking Oil for Biodiesel Supply Chain under Uncertainty

2021 ◽  
Vol 2021 ◽  
pp. 1-18
Author(s):  
Nana Geng ◽  
Qihong Fu ◽  
Yixiang Sun
Keyword(s):  
Supply Chain ◽  
Stochastic Programming ◽  
Programming Model ◽  
Waste Cooking Oil ◽  
Biodiesel Production ◽  
Total System ◽  
Kitchen Waste ◽  
Cooking Oil ◽  
Biofuel Industry ◽  
Stochastic Programming Model

As an important emission reduction source for the transportation industry, biofuel has received strong support from the Chinese government. However, the development of the biofuel industry is still struggling. The high degree of uncertainty makes the development of the industry face huge challenges. Kitchen waste, as a biodiesel raw material with a large yield, has good development prospects. Reuse of kitchen waste can solve public health and safety problems. This paper proposes a two-stage stochastic programming model under supply disturbance to optimize the supply chain from the perspective of contract. Then current three main flow directions of kitchen waste are analysed and the reasonable price for biodiesel operators to purchase is determined. By signing contracts with the biodiesel operators, restaurant is guaranteed and encouraged to provide a certain percentage of kitchen waste to meet the demand for biodiesel production. Using actual case in the Yangtze River Delta region, the performance of the stochastic programming model under disturbance was compared. Through the sensitivity analysis of different parameters, this paper determines the influence of its supply chain network design and expected total system cost. Through the optimization of the waste cooking oil (WCO) for biodiesel supply chain, this paper can effectively improve the efficiency of the supply chain, reduce system costs, increase the profits of biofuel operators, and promote the sustainable development of the biofuel industry.

scholarly journals Synthesis of ZnO/CaO Catalyst from Eggshell Waste for Biodiesel Production

2019 ◽  
Vol 8 (1) ◽  
pp. 65-71
Author(s):  
Dino Wicaksono ◽  
Ratna Dewi Kusumaningtyas
Keyword(s):  
Renewable Energy ◽  
Large Scale ◽  
Catalyst Activity ◽  
Reaction System ◽  
Transesterification Reaction ◽  
Biodiesel Production ◽  
Scale Production ◽  
Alkaline Catalyst ◽  
Active Metal ◽  
Eggshell Waste

The diminishing of fossil fuel reserve has raised a consideration on the renewable energy development. Biodiesel is among the promising renewable energy which is feasible for large-scale production. Biodiesel is generally synthesized through the alkaline-catalyst transesterification of vegetable oil. The common catalyst for biodiesel is homogeneous base catalysts which are active but show several drawbacks related to the environmental aspects. Therefore, development of heterogeneous alkaline catalyst for biodiesel production is critical. CaO catalyst is considered a favourable heterogeneous base catalyst for transesterification reaction and it can be derived from various natural resources. In this work, CaO catalyst from eggshell was synthesized from eggshell waste. To improve the catalyst activity, CaO was combined with ZnO active metal, resulting ZnO/CaO catalyst. In this research, the development, characterization, and application of ZnO/CaO catalyst for waste cooking oil (WCO) transesterification to produce biodiesel has been investigated. Various concentration of ZnO was combined with CaO to determine the best formulation of ZnO/CaO catalyst development. It was demonstrated that the addition of ZnO active metal on CaO catalyst could remarkably improve the biodiesel yield through WCO transesterification reaction. The addition of 6% ZnO active metal on CaO, forming ZnO/CaO 6% catalyst, has exhibited the optimal enhancement of biodiesel yield. Furthermore, it was found that the optimum amount of ZnO/CaO 6% catalyst added in the reaction system was 3% w/w catalyst/WCO.

Biodiesel Production from Kapok (Ceiba pentandra) Seed Oil using Naturally Alkaline Catalyst as an Effort of Green Energy and Technology

2013 ◽  
Vol 2 (3) ◽  
pp. 169-173 ◽  
Author(s):  
N.A. Handayani ◽  
H. Santosa ◽  
M. Sofyan ◽  
I. Tanjung ◽  
A. Chyntia ◽  
...  
Keyword(s):  
Seed Oil ◽  
Green Energy ◽  
Green Technology ◽  
Biodiesel Production ◽  
Molar Ratio ◽  
Alkaline Catalyst ◽  
Biodiesel Feedstock ◽  
Presidential Decree ◽  
Near Future

Nowadays, energy that used to serve all the needs of community, mainly generated from fossil (conventional energy). Terrace in energy consumption is not balanced with adequate fossil fuel reserves and will be totally depleted in the near future. Indonesian Government through a Presidential Decree No. 5 year 2006 mandates an increased capacity in renewable energy production from 5 percent to 15 percent in 2025. C. pentandra seed oil has feasibility as a sustainable biodiesel feedstock in Indonesia. The aim of this paper was to investigate biodiesel production from ceiba petandra seed oil using naturally potassium hydroxide catalyst. Research designs are based on factorial design with 2 levels and 3 independent variables (temperature, reaction time and molar ratio of methanol to oil). According to data calculation, the most influential single variable is molar ratio of methanol to oil. Characterization of biodiesel products meet all the qualifications standardized by SNI 04-7182-2006. Keywords: biodiesel, kapok seed oil, c. pentandra, green technology

scholarly journals Conversion of Mixtures of Soybean Curd Residue and Kitchen Waste by Black Soldier Fly Larvae (Hermetia illucens L.)

Insects ◽  
2021 ◽  
Vol 13 (1) ◽  
pp. 23
Author(s):  
Xinfu Li ◽  
Zhihao Zhou ◽  
Jing Zhang ◽  
Shen Zhou ◽  
Qiang Xiong
Keyword(s):  
Animal Feed ◽  
Biomass Conversion ◽  
Dry Mass ◽  
Biodiesel Production ◽  
Least Squares Regression ◽  
Kitchen Waste ◽  
Black Soldier Fly ◽  
Hermetia Illucens ◽  
Soybean Curd ◽  
Soybean Curd Residue

The production of insect biomass from organic waste is a major challenge in terms of reducing the environmental impacts of waste and maintaining feed and food security. The feasibility of the co-conversion of soybean curd residue (SCR) and kitchen waste (KW) to breed black soldier fly (BSF, Hermetia illucens) larvae was evaluated so as to enhance biomass conversion efficiency and supply animal feed and allow it to be used in biodiesel production. Co-digestion was found to significantly increase larval yield, bioconversion rate, and bioaccumulation of lipid. Partial least squares regression showed that the conversion of 30% SCR with 70% KW is an appropriate proportion. The appropriate performance parameters of BSF were: survival rate (98.75%), prepupal rate (88.61%), larval biomass (30.32 g fresh and 11.38 g dry mass), bioconversion rate (18.45%), efficiency conversion of ingested food (ECI) (28.30%), and FCR (2.51). Our results show that conversion of mixtures (e.g., SCR with KW) by BSF larvae (BSFL) could play an important role in various organic materials management.

scholarly journals Microbial Production of 2,3- Butanediol From Waste Glycerol

2017 ◽  
pp. 960-974
Author(s):  
S. Yankova ◽  
P. Begova ◽  
V. Beschkov
Keyword(s):  
Klebsiella Oxytoca ◽  
Substrate Inhibition ◽  
Practical Importance ◽  
Product Formation ◽  
Biodiesel Production ◽  
Glycerol Concentration ◽  
Market Demand ◽  
Alkaline Catalyst ◽  
Waste Glycerol ◽  
High Yields

An inevitable waste from biodiesel production is glycerol, contaminated by alkaline catalyst, water and methanol and released in quite big amounts, exceeding its market demand. One way of its utilization is production of different bulk and fine chemicals, for example 2,3- butanediol. The latter is used as a precursor for manufacturing of plastics, synthetic rubber, some pharmaceuticals, etc. In the present paper the ability of the strain Klebsiella oxytoca VA 8391 to produce this compound under batch and fed-batch conditions was studied at initial glycerol concentrations between 10 and 30 g dm-3. Experiments have been carried out in shaking flasks. The bacteria cultivation was at 37oC and stirred conditions at 200 rpm, whereas the product formation was studied both under stirred and still conditions. It was found out that the used strain is capable to produce selectively 2,3- butanediol with very high yields of practical importance (up to 92 %) and no contamination by other products. The optimum glycerol concentration was 20 g dm-3. At higher initialconcentrations substrate inhibition started to occur. It was established that the studied fermentation process required aerobic bacteria cultivation followed by anoxic period of product formation by the developed culture. Only in this case high yields were attained.

Sign in / Sign up

Export Citation Format

Share Document