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The status and outlook of wind power converters

Min Enze,Xie Wenhua

Strategic Study of CAE 2011, Volume 13, Issue 2,   Pages 13-15

Abstract:

The world recent activities in the fields of micro-algae biodiesel, cellulosicIt was proposed that the first industrial demonstration unit for these micro-algae biodiesel, cellulosic

Keywords： bio-based automobile fuel     micro-algae biodiesel     cellulosic ethanol     biogasoline    

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Effects of manufactured nanomaterials on algae: Implications and applications

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 9, doi: 10.1007/s11783-022-1554-3

Abstract:

● Summary of positive and negative effects of MNMs on algae.

Keywords： Manufactured nanomaterials     Algae     Mechanisms     Effects     Implications     Applications    

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Algae (

Xuesong Liu, Jianmin Wang

Frontiers of Environmental Science & Engineering 2020, Volume 14, Issue 6, doi: 10.1007/s11783-020-1276-3

Abstract: Abstract • Micro-plastics (MPs) significantly increase Pb toxicity. • Algae reduce the combined toxicityMoreover, under realistic environmental conditions, algae, a natural food for aquatic organisms, mayThen, we investigated the effect of algae on the combined toxicity of MPs and Pb.The presence of algae mitigated the combined toxicity of MPs and Pb, although algae alone increased PbTherefore, the toxicity mitigation through algae uptake came from mechanisms other than Pb accumulation

Keywords： Microplastic     Lead     Toxicity     Algae     C. dubia    

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Optimization and modeling of coagulation-flocculation to remove algae and organic matter from surface

Ziming Zhao, Wenjun Sun, Madhumita B. Ray, Ajay K Ray, Tianyin Huang, Jiabin Chen

Frontiers of Environmental Science & Engineering 2019, Volume 13, Issue 5, doi: 10.1007/s11783-019-1159-7

Abstract: the necessity to develop an effective and optimal water treatment process to enhance the removal of algaeIn the present study, the coagulation performance for the removal of algae, turbidity, dissolved organicIt can be concluded that the major mechanisms of coagulation to remove algae and DOM were charge neutralizationThe results proposed a valuable reference for the treatment of algae-laden surface water in practical

Keywords： Algae     Coagulation-flocculation     Response surface methodology     Artificial neural networks    

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Development of a combined approach for improvement and optimization of karanja biodiesel using response

Sunil DHINGRA, Gian BHUSHAN, Kashyap Kumar DUBEY

Frontiers in Energy 2013, Volume 7, Issue 4,   Pages 495-505 doi: 10.1007/s11708-013-0267-5

Abstract: This paper described the production of karanja biodiesel using response surface methodology (RSM) andThe optimum combination of reaction variables were analyzed for maximizing the biodiesel yield.Hence, 25% of the improvement in the biodiesel yield was reported.Moreover the different properties of karanja biodiesel were found closer to the American Society forTesting & Materials (ASTM) standard of biodiesel.

Keywords： optimization of karanja biodiesel     genetic algorithm (GA)     response surface methodology (RSM)     percentageimprovement in the biodiesel yield     properties of biodiesel    

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Metakaolinite as a catalyst for biodiesel production from waste cooking oil

Jorge RAMIREZ-ORTIZ, Merced MARTINEZ, Horacio FLORES

Frontiers of Chemical Science and Engineering 2012, Volume 6, Issue 4,   Pages 403-409 doi: 10.1007/s11705-012-1224-2

Abstract: transesterification reaction of waste cooking oil with methanol to obtain fatty acid methyl esters (biodieselThe transesterification reaction produced biodiesel in a maximum yield of 95% under the following conditionsThe biodiesel thus obtained exhibited a viscosity of 5.4?mm ?s and a density of 900.1 kg?m .

Keywords： biodiesel     metakaolinite     transesterification     waste cooking oil    

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Surface water treatment benefits from the presence of algae: Influence of algae on the coagulation behavior

Yanxia Zhao, Huiqing Lian, Chang Tian, Haibo Li, Weiying Xu, Sherub Phuntsho, Kaimin Shih

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 4, doi: 10.1007/s11783-020-1350-x

Abstract: coagulation was capable for both algae and organic matter removal. • Surface water purification wasimproved by around 30% due to algae inclusion. • Algae functioned as flocculant aid to assist polytitaniumTitanium-based coagulation has proved to be effective for algae-laden micro-polluted water purificationJar tests were performed to evaluate coagulation performance using both algae-free (controlled) and algae-ladenthose of algae-free flocs.

Keywords： Coagulation     Polytitanium chloride     Coagulation behaviour     Algae     Floc property    

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Sulfonic acid-functionalized mesoporous silica catalyst with different morphology for biodiesel production

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 8,   Pages 1198-1210 doi: 10.1007/s11705-021-2133-z

Abstract: mesoporous silica catalysts of spherical shape and the cube shape were assessed for catalytic activity in biodieselThe catalytic biodiesel production reaction over the catalysts were studied by esterification of freeThe present catalysts exhibit superior performance in biodiesel production and it can be used for theseveral biodiesel feedstock’s that are rich in free fatty acids.

Keywords： solid acid catalyst     mesoporous silica     sulfonic acid     biodiesel     esterification     oleic acid    

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Application of heterogeneous catalysis to biodiesel synthesis using microalgae oil

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 5, doi: 10.1007/s11783-020-1343-9

Abstract:

• Microalgae oil application for biodiesel synthesis is discussed.

Keywords： Biodiesel     Heterogeneous catalysis     Transesterification     Microalgae oil    

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Simulation analysis of methanol flash distillation circulation process in biodiesel production with supercritical

Zhengjiao TANG, Cunwen WANG, Weiguo WANG, Jia GUO, Yuanxin WU, Jinfang CHEN, Yigang DING

Frontiers in Energy 2011, Volume 5, Issue 1,   Pages 93-97 doi: 10.1007/s11708-010-0028-7

Abstract: High methanol-to-oil ratio is required to obtain a high conversion of oil for the production of biodiesel

Keywords： supercritical methanol     biodiesel     recovery     flash distillation    

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Challenge of biodiesel production from sewage sludge catalyzed by KOH, KOH/activated carbon, and KOH/

Xuemin Wu,Fenfen Zhu,Juanjuan Qi,Luyao Zhao,Fawei Yan,Chenghui Li

Frontiers of Environmental Science & Engineering 2017, Volume 11, Issue 2, doi: 10.1007/s11783-017-0913-y

Abstract: KOH/activated carbon was a better catalyst for biodiesel production.abundance, and low costs involved has led to the proposal to use sewage sludge as raw material for biodieselMany conditions have been tested to increase biodiesel yield through single-factor tests, including mass

Keywords： Biodiesel     Sewage sludge     Base catalyst     In situ transesterification    

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Transesterification of soybean oil to biodiesel over kalsilite catalyst

Guang WEN, Zifeng YAN

Frontiers of Chemical Science and Engineering 2011, Volume 5, Issue 3,   Pages 325-329 doi: 10.1007/s11705-010-0574-x

Abstract: A biodiesel yield of 54.4% and a kinematic viscosity of 7.06 cSt were obtained at a high reaction temperatureA biodiesel yield of 100% and a kinematic viscosity of 3.84 cSt were achieved at a temperature of onlylaboratory-scale fixed-bed reactor showed that it maintained a stable catalytic performance with a biodiesel

Keywords： kalsilite     heterogeneous catalyst     transesterification     biodiesel    

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Freshwater algae chemotaxonomy by high-performance liquid chromatographic (HPLC) analysis

Yansong HOU, Wei LIANG, Liping ZHANG, Shuiping CHENG, Feng HE, Zhenbin WU

Frontiers of Environmental Science & Engineering 2011, Volume 5, Issue 1,   Pages 84-91 doi: 10.1007/s11783-010-0283-1

Abstract: The study of community composition of algae is essential for understanding the structure and dynamics

Keywords： high-performance liquid chromatographic (HPLC)     algae     pigment     chemotaxonomy    

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Calculation and analysis of sub/supercritical methanol preheating tube for continuous production of biodiesel

Wen CHEN, Weiyong YING, Cunwen WANG, Weiguo WANG, Yuanxin WU, Junfeng ZHANG,

Frontiers in Energy 2009, Volume 3, Issue 4,   Pages 423-431 doi: 10.1007/s11708-009-0075-0

Abstract: Biodiesel is an important renewable energy.Supercritical methanol transesterification for biodiesel has recently been concerned because of its obviousThe tubular reactor is an ideal reactor for continuous preparation of biodiesel via supercritical methanol

Keywords： sub/supercritical methanol     preheating tube     integration method     biodiesel    

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Optimization of pretreatment of Jatropha oil with high free fatty acids for biodiesel production

Supriyono SUWITO, Giuliano DRAGONE, Hary SULISTYO, Bardi MURACHMAN, Suryo PURWONO, José TEIXEIRA

Frontiers of Chemical Science and Engineering 2012, Volume 6, Issue 2,   Pages 210-215 doi: 10.1007/s11705-012-1282-5

Abstract: A central composite rotatable design and response surface methodology were used in order to investigate the individual and combined effects of the ethanol-to-oil ratio, H SO concentration, temperature and time of reaction on the reduction of free fatty acid (FFA) in jatropha oil. A quadratic polynomial model relating the reaction variables with FFA reduction was developed, presenting a good coefficient of determination ( = 0.893). For reducing FFA to less than 1%, the optimal combination was found to be 0.62 v·v ethanol-to-oil ratio (14.9 v·v ethanol-to-FFA ratio), 1.7% v·v H SO concentration, and 79 min reaction time at a reaction temperature of 54°C. These results are of great relevance to maximize methyl esters formation by transesterification using an alkaline catalyst.

Keywords： biodiesel     biofuel     esterification     free fatty acids     jatropha curcas oil    

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Title Author Date Type Operation

The status and outlook of wind power converters

Min Enze,Xie Wenhua

Journal Article

Effects of manufactured nanomaterials on algae: Implications and applications

Journal Article

Algae (

Xuesong Liu, Jianmin Wang

Journal Article

Optimization and modeling of coagulation-flocculation to remove algae and organic matter from surface

Ziming Zhao, Wenjun Sun, Madhumita B. Ray, Ajay K Ray, Tianyin Huang, Jiabin Chen

Journal Article

Development of a combined approach for improvement and optimization of karanja biodiesel using response

Sunil DHINGRA, Gian BHUSHAN, Kashyap Kumar DUBEY

Journal Article

Metakaolinite as a catalyst for biodiesel production from waste cooking oil

Jorge RAMIREZ-ORTIZ, Merced MARTINEZ, Horacio FLORES

Journal Article

Surface water treatment benefits from the presence of algae: Influence of algae on the coagulation behavior

Yanxia Zhao, Huiqing Lian, Chang Tian, Haibo Li, Weiying Xu, Sherub Phuntsho, Kaimin Shih

Journal Article

Sulfonic acid-functionalized mesoporous silica catalyst with different morphology for biodiesel production

Journal Article

Application of heterogeneous catalysis to biodiesel synthesis using microalgae oil

Journal Article

Simulation analysis of methanol flash distillation circulation process in biodiesel production with supercritical

Zhengjiao TANG, Cunwen WANG, Weiguo WANG, Jia GUO, Yuanxin WU, Jinfang CHEN, Yigang DING

Journal Article

Challenge of biodiesel production from sewage sludge catalyzed by KOH, KOH/activated carbon, and KOH/

Xuemin Wu,Fenfen Zhu,Juanjuan Qi,Luyao Zhao,Fawei Yan,Chenghui Li

Journal Article

Transesterification of soybean oil to biodiesel over kalsilite catalyst

Guang WEN, Zifeng YAN

Journal Article

Freshwater algae chemotaxonomy by high-performance liquid chromatographic (HPLC) analysis

Yansong HOU, Wei LIANG, Liping ZHANG, Shuiping CHENG, Feng HE, Zhenbin WU

Journal Article

Calculation and analysis of sub/supercritical methanol preheating tube for continuous production of biodiesel

Wen CHEN, Weiyong YING, Cunwen WANG, Weiguo WANG, Yuanxin WU, Junfeng ZHANG,

Journal Article

Optimization of pretreatment of Jatropha oil with high free fatty acids for biodiesel production

Supriyono SUWITO, Giuliano DRAGONE, Hary SULISTYO, Bardi MURACHMAN, Suryo PURWONO, José TEIXEIRA

Journal Article