1
|
Liu R, Zhao Y, Wang T, Shen C. Long-term operation with an insight into a newly established green bio-sorption reactor: Can it achieve "1 + 1 > 2"? BIORESOURCE TECHNOLOGY 2018; 255:96-103. [PMID: 29414179 DOI: 10.1016/j.biortech.2018.01.102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2017] [Revised: 01/16/2018] [Accepted: 01/22/2018] [Indexed: 06/08/2023]
Abstract
An eco-friendly system of green bio-sorption reactor (GBR), constructed by embedding alum sludge-based constructed wetland (AlCW) into a conventional activated sludge process to achieve "1 + 1 > 2", was evaluated under a long-term operation basis. Insight into the pollutants removal, particularly the role of the AlCW in the GBR, was explored and discussed. The results showed that the GBR could achieve 90% and 95% removal for TN and TP (Stage 4), respectively, under the hydraulic and nitrogen loading rate of 2.07 m3/(m3·d) and 166.2 gN/(m3·d), respectively. Intriguingly, despite the P adsorption, the AlCW enlarged the size of the activated sludge flocs which benefited the simultaneous nitrification and denitrification. Subversively, the embedding AlCW brings about dual-intensification in both capacity and efficiency. In addition, the GBR as an ecological engineering system can be employed closely to residential area in line with its green and pleasing appearance.
Collapse
Affiliation(s)
- Ranbin Liu
- Institute of Water Resources and Hydro-electric Engineering, Xi'an University of Technology, Xi'an 710048, PR China; UCD Dooge Centre for Water Resources Research, School of Civil Engineering, University College Dublin, Belfield, Dublin 4, Ireland
| | - Yaqian Zhao
- Institute of Water Resources and Hydro-electric Engineering, Xi'an University of Technology, Xi'an 710048, PR China; UCD Dooge Centre for Water Resources Research, School of Civil Engineering, University College Dublin, Belfield, Dublin 4, Ireland; Key Laboratory of Subsurface Hydrology and Ecology in Arid Areas (Ministry of Education), School of Environmental Science and Engineering, Chang'an University, Xi'an 710054, PR China.
| | - Tong Wang
- School of Civil Engineering, Chang'an University, Xi'an 710061, PR China
| | - Cheng Shen
- UCD Dooge Centre for Water Resources Research, School of Civil Engineering, University College Dublin, Belfield, Dublin 4, Ireland
| |
Collapse
|
2
|
Wang Y, Agarwal S, Tang Z, Heeres HJ. Exploratory catalyst screening studies on the liquefaction of model humins from C6 sugars. RSC Adv 2017. [DOI: 10.1039/c6ra24218a] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A catalyst screening study is reported on the liquefaction of humins, the solid byproducts from C6 sugar biorefineries for levulinic acid and 5-hydroxymethylfurfural production.
Collapse
Affiliation(s)
- Y. Wang
- Chemical Engineering Department
- ENTEG
- University of Groningen
- 9747 AG Groningen
- The Netherlands
| | - S. Agarwal
- Chemical Engineering Department
- ENTEG
- University of Groningen
- 9747 AG Groningen
- The Netherlands
| | - Z. Tang
- Chemical Engineering Department
- ENTEG
- University of Groningen
- 9747 AG Groningen
- The Netherlands
| | - H. J. Heeres
- Chemical Engineering Department
- ENTEG
- University of Groningen
- 9747 AG Groningen
- The Netherlands
| |
Collapse
|
3
|
Hamieh S, Beauchet R, Lemee L, Toufaily J, Koubaissy B, Hamieh T, Pouilloux Y, Pinard L. Bio oil synthesis by coupling biological biomass pretreatment and catalytic hydroliquefaction process. BIORESOURCE TECHNOLOGY 2014; 156:389-394. [PMID: 24529961 DOI: 10.1016/j.biortech.2014.01.070] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2013] [Revised: 01/15/2014] [Accepted: 01/18/2014] [Indexed: 06/03/2023]
Abstract
The bio-oil synthesis from a mixture of wastes (7wt.% straw, 38wt.% wood, and 45wt.% grass) was carried out by direct liquefaction reaction using Raney Nickel as catalyst and tetralin as solvent. The green wastes were biologically degraded during 3 months. Longer the destructuration time; higher the yield into oil is. Biological pretreatment of green wastes promotes the liquefaction process. Among the components of degraded biomass, Humin, the major fraction (60-80wt.%) that was favored by the biological treatment, yields to a bio oil extremely energetic with a HHV close to biopetroleum (40MJ kg(-1)), contrariwise, Fulvic acids (2-12wt.%), the minor fraction is refractory to liquefaction reaction.
Collapse
Affiliation(s)
- S Hamieh
- IC2MP, Institut de Chimie, des Milieux et Matériaux de Poitiers, Univeristy of Poitiers, 4 rue Michel Brunet, 86000 Poitiers, France; MCEMA, Laboratory of Materials, Catalysis, Environment and Analytical Methods, Faculty of Sciences I, Lebanese University, Campus Rafic Hariri, Hadath, Lebanon
| | - R Beauchet
- IC2MP, Institut de Chimie, des Milieux et Matériaux de Poitiers, Univeristy of Poitiers, 4 rue Michel Brunet, 86000 Poitiers, France
| | - L Lemee
- IC2MP, Institut de Chimie, des Milieux et Matériaux de Poitiers, Univeristy of Poitiers, 4 rue Michel Brunet, 86000 Poitiers, France
| | - J Toufaily
- MCEMA, Laboratory of Materials, Catalysis, Environment and Analytical Methods, Faculty of Sciences I, Lebanese University, Campus Rafic Hariri, Hadath, Lebanon
| | - B Koubaissy
- MCEMA, Laboratory of Materials, Catalysis, Environment and Analytical Methods, Faculty of Sciences I, Lebanese University, Campus Rafic Hariri, Hadath, Lebanon
| | - T Hamieh
- MCEMA, Laboratory of Materials, Catalysis, Environment and Analytical Methods, Faculty of Sciences I, Lebanese University, Campus Rafic Hariri, Hadath, Lebanon
| | - Y Pouilloux
- IC2MP, Institut de Chimie, des Milieux et Matériaux de Poitiers, Univeristy of Poitiers, 4 rue Michel Brunet, 86000 Poitiers, France
| | - L Pinard
- IC2MP, Institut de Chimie, des Milieux et Matériaux de Poitiers, Univeristy of Poitiers, 4 rue Michel Brunet, 86000 Poitiers, France.
| |
Collapse
|