The application of activated carbon for the treatment and reuse of the aqueous phase derived from the hydrothermal liquefaction of a halophytic Tetraselmis sp.

2015 ◽  
Vol 182 ◽  
pp. 378-382 ◽  
Author(s):  
Mason Erkelens ◽  
Andrew S. Ball ◽  
David M. Lewis
Keyword(s):  
Activated Carbon ◽  
Aqueous Phase ◽  
Hydrothermal Liquefaction

Anaerobic conversion of the hydrothermal liquefaction aqueous phase: fate of organics and intensification with granule activated carbon/ozone pretreatment

2019 ◽  
Vol 21 (6) ◽  
pp. 1305-1318 ◽  
Author(s):  
Buchun Si ◽  
Libin Yang ◽  
Xuefei Zhou ◽  
Jamison Watson ◽  
Giovana Tommaso ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Aqueous Phase ◽  
Hydrothermal Liquefaction ◽  
Biofuel Production ◽  
Wet Biomass ◽  
Ozone Pretreatment ◽  
Anaerobic Conversion

Hydrothermal liquefaction (HTL) is considered to be a promising route for biofuel production from wet biomass.

scholarly journals Bio-Crude Production through Recycling of Pretreated Aqueous Phase via Activated Carbon

Energies ◽  
2021 ◽  
Vol 14 (12) ◽  
pp. 3488
Author(s):  
Ayaz Ali Shah ◽  
Saqib Sohail Toor ◽  
Asbjørn Haaning Nielsen ◽  
Thomas Helmer Pedersen ◽  
Lasse Aistrup Rosendahl
Keyword(s):  
Activated Carbon ◽  
Sewage Sludge ◽  
Aqueous Phase ◽  
Energy Recovery ◽  
Heterocyclic Compounds ◽  
Solid Phase ◽  
Hydrothermal Liquefaction ◽  
Inorganic Elements ◽  
Commercial Scale ◽  
Small Chain

The management and optimization of the aqueous phase are the major challenges that hinder the promotion of hydrothermal liquefaction (HTL) technology on a commercial scale. Recently, many studies reported about the accumulation of the N-content in the bio-crude with continuous recycling of the aqueous phase from high protein-containing biomass. In the present study, sewage sludge was processed at 350 °C in an autoclave. The produced aqueous phase was treated with activated carbon, and its subsequent recycling effect on the properties of the bio-crude and aqueous phase was investigated. By contacting the aqueous phase with activated carbon, 38–43% of the total nitrogen was removed from the aqueous phase. After applying the treated aqueous phase recycling, the energy recovery of the bio-crude increased from 50 to 61% after three rounds of recycling. From overall carbon/nitrogen recoveries, 50 to 56% of the carbon was transferred to the bio-crude phase and more than 50% of the nitrogen remained in the aqueous phase. The aqueous phase contained mostly of N&O-heterocyclic compounds, small chain organic acids, and amides. ICP-AES analysis showed that more than 80% of the inorganic elements were concentrated into the solid phase.

Hydrothermal liquefaction of municipal wastewater sludge and nutrient recovery from the aqueous phase

Biofuels ◽  
2021 ◽  
pp. 1-6
Author(s):  
Vinod Kumar ◽  
Krishna Kumar Jaiswal ◽  
Mikhail S. Vlaskin ◽  
Manisha Nanda ◽  
M. K. Tripathi ◽  
...  
Keyword(s):  
Aqueous Phase ◽  
Municipal Wastewater ◽  
Hydrothermal Liquefaction ◽  
Wastewater Sludge ◽  
Nutrient Recovery

scholarly journals Bio-Crude Production Improvement during Hydrothermal Liquefaction of Biopulp by Simultaneous Application of Alkali Catalysts and Aqueous Phase Recirculation

Energies ◽  
2021 ◽  
Vol 14 (15) ◽  
pp. 4492
Author(s):  
Komeil Kohansal ◽  
Kamaldeep Sharma ◽  
Saqib Sohail Toor ◽  
Eliana Lozano Sanchez ◽  
Joscha Zimmermann ◽  
...  
Keyword(s):  
Aqueous Phase ◽  
Hydrothermal Liquefaction ◽  
Biofuel Production ◽  
Hydrothermal Conversion ◽  
Simultaneous Application ◽  
Heating Value ◽  
Production Improvement ◽  
Catalytic Experiment ◽  
Alkali Catalysts ◽  
Alkali Elements

This study focuses on the valorization of the organic fraction of municipal solid waste (biopulp) by hydrothermal liquefaction. Thereby, homogeneous alkali catalysts (KOH, NaOH, K2CO3, and Na2CO3) and a residual aqueous phase recirculation methodology were mutually employed to enhance the bio-crude yield and energy efficiency of a sub-critical hydrothermal conversion (350 °C, 15–20 Mpa, 15 min). Interestingly, single recirculation of the concentrated aqueous phase positively increased the bio-crude yield in all cases, while the higher heating value (HHV) of the bio-crudes slightly dropped. Compared to the non-catalytic experiment, K2CO3 and Na2CO3 effectively increased the bio-crude yield by 14 and 7.3%, respectively. However, KOH and NaOH showed a negative variation in the bio-crude yield. The highest bio-crude yield (37.5 wt.%) and energy recovery (ER) (59.4%) were achieved when K2CO3 and concentrated aqueous phase recirculation were simultaneously applied to the process. The inorganics distribution results obtained by ICP reveal the tendency of the alkali elements to settle into the aqueous phase, which, if recovered, can potentially boost the circularity of the HTL process. Therefore, wise selection of the alkali catalyst along with aqueous phase recirculation assists hydrothermal liquefaction in green biofuel production and environmentally friendly valorization of biopulp.

Photo‐catalytic reforming of aqueous phase derived from hydrothermal liquefaction of Nostoc ellipsosporum for bio‐hydrogen production

2021 ◽  
Author(s):  
Sivakumar Shri Vigneshwar ◽  
Authilingam Swetha ◽  
Kannappan Panchamoorthy Gopinath ◽  
Jayaseelan Arun ◽  
Ramachandran Sivaramakrishnan ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Aqueous Phase ◽  
Hydrothermal Liquefaction ◽  
Catalytic Reforming ◽  
Nostoc Ellipsosporum

Hydrothermal liquefaction of pre-treated municipal solid waste (biopulp) with recirculation of concentrated aqueous phase

2021 ◽  
Vol 148 ◽  
pp. 106032
Author(s):  
Komeil Kohansal ◽  
Saqib Toor ◽  
Kamaldeep Sharma ◽  
Rupa Chand ◽  
Lasse Rosendahl ◽  
...  
Keyword(s):  
Municipal Solid Waste ◽  
Solid Waste ◽  
Aqueous Phase ◽  
Hydrothermal Liquefaction

Reutilization potential of antibiotic wastes via hydrothermal liquefaction (HTL): Bio-oil and aqueous phase characteristics

2019 ◽  
Vol 92 (5) ◽  
pp. 1537-1547 ◽  
Author(s):  
Xiuzheng Zhuang ◽  
Hao Zhan ◽  
Yanpei Song ◽  
Yanqin Huang ◽  
Xiuli Yin ◽  
...  
Keyword(s):  
Aqueous Phase ◽  
Hydrothermal Liquefaction ◽  
Bio Oil

Aqueous phase hydrogenation of substituted phenyls over carbon nanofibre and activated carbon supported Pd

2010 ◽  
Vol 270 (1) ◽  
pp. 9-15 ◽  
Author(s):  
J.A. Anderson ◽  
A. Athawale ◽  
F.E. Imrie ◽  
F.-M. MKenna ◽  
A. MCue ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Aqueous Phase ◽  
Carbon Nanofibre ◽  
Supported Pd

scholarly journals Mechanisms of distinct activated carbon and biochar amendment effects on petroleum vapour biofiltration in soil

2017 ◽  
Vol 19 (10) ◽  
pp. 1260-1269 ◽  
Author(s):  
Khaled M. Bushnaf ◽  
George Mangse ◽  
Paola Meynet ◽  
Russell J. Davenport ◽  
Olaf A. Cirpka ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Aqueous Phase ◽  
Soil P ◽  
Phase Liquid ◽  
Biochar Amendment

We studied the effects of two percent by weight activated carbonversusbiochar amendments in 93 cm long sand columns on the biofiltration of petroleum vapours released by a non-aqueous phase liquid (NAPL) source.

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