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

Kohansal, Komeil; Toor, Saqib; Sharma, Kamaldeep; Chand, Rupa; Rosendahl, Lasse; Pedersen, Thomas Helmer

doi:10.1016/j.biombioe.2021.106032

Cited by 35 publications

(17 citation statements)

References 28 publications

(37 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The results of the hydrodynamic modeling simulation are in the form of tidal models, current velocity, and current movement patterns, maximum tides (Figure 9), and wave heights (Kohansal et al, 2021). From this current movement pattern, it is possible to know the pattern of sediment movement, so that it can be considered for planning alternative jetty design layouts (Mahmoodi et al, 2020).…”

Section: Modelling Simulation Resultsmentioning

confidence: 99%

Sedimentation Rate Analysis in Dock C PT. Petrokimia Gresik, Indonesia

et al. 2021

View full text Add to dashboard Cite

Dock C is one of the supporting facilities at PT. Petrokimia Gresik which functions as loading and unloading goods from ships to land and vice versa. Another benefit of the jetty is that it can significantly increase the company's production capacity. Dock C PT. Petrokimia Gresik. In the treatment of sedimentation in port it is necessary to analyze the current pattern and sedimentation rate early, because this is the first step to predict the amount of sedimentation contained in the port in a certain period of time. Several ways can be done to minimize the rate of sedimentation, one of which is the layout of Dock C to reduce the frequency of dredging. This study compares the sedimentation volume at the existing condition jetty and two alternative jetty that occur due to currents and waves, while modeling is done using Mike 21. The results of the existing jetty modeling show the sedimentation volume for 12 months was 20641.68 m3. Whereas the sedimentation volume from alternative jetty 1 and 2 produced for 12 months was 11293.56 m3 and 7426.2 m3. Modifications to the layout of the jetty provided were able to reduce the rate of sedimentation in Dock C, with the most optimal sedimentation volume for 12 months at 13215.48 m3

show abstract

Section: Modelling Simulation Resultsmentioning

confidence: 99%

Sedimentation Rate Analysis in Dock C PT. Petrokimia Gresik, Indonesia

et al. 2021

View full text Add to dashboard Cite

show abstract

“…† Based on the optimized HTL condition in our previous studies, 234 g of homogeneous biopulp slurry containing around 38 g of the dry matter (ash-free) was injected into the reactor ($20% of dry matter) in the reference run (C0). 20,22 The reactor was then fully purged using N 2 gas to minimize the oxidization and subsequently pressurized up to 2 MPa. A 1.75 kW electrical ceramic heater with a 4 K min À1 heating rate was employed to maintain the desired operational temperature (350 C).…”

Section: Experimental Methodsmentioning

confidence: 99%

“…18,19 On the other hand, few previous studies have concluded that APR can potentially increase the nitrogen and heavy metal contents of ultimate HTL bio-crude, whereas there is limited information regarding the impact of different nitrogen species (originated or promoted by APR) on a downstream process in the literature. 9,20 In this regard, a detailed investigation of the mutual interaction of catalytic hydrotreating and heteroatomic compounds of bio-crude before and aer APR is highly demanded.…”

Section: Introductionmentioning

confidence: 99%

Hydrotreating of bio-crude obtained from hydrothermal liquefaction of biopulp: effects of aqueous phase recirculation on the hydrotreated oil

Kohansal

Sharma

Haider

et al. 2022

Sustainable Energy Fuels

Self Cite

View full text Add to dashboard Cite

show abstract

“…However, due to the limited quantity of the concentrated aqueous phase, the second cycle experiments were carried out in a single reactor. In a typical non-catalytic experiment, each reactor was charged with 8 g of the biopulp (around 1.22 g of dry ash-free matter), whereas in the catalytic experiments, 2 wt.% (wet basis, approximately 10 wt.% dry basis) of the catalyst was added to the reactor as well [27]. The residual oxygen was then vented out by purging around 2 MPa of inert gas (N 2 -99.9% of purity), and the reactors were fully sealed.…”

Section: Htl Proceduresmentioning

confidence: 99%

“…The impact of different alkali catalysts (KOH, NaOH, K 2 CO 3 , and Na 2 CO 3 ) on the HTL of the biopulp was investigated at 350 • C with 15 min of residence time [27]. The baseline experiment (non-catalytic-1st), which was conducted with no catalyst or recirculation, yielded 30.6 wt.% of bio-crude.…”

Section: Htl Experiments 321 Effect Of Catalysts and Concentrate Recirculation On Htl Productsmentioning

confidence: 99%

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

et al. 2021

Self Cite

View full text Add to dashboard Cite

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.

show abstract

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

Cited by 35 publications

References 28 publications

Sedimentation Rate Analysis in Dock C PT. Petrokimia Gresik, Indonesia

Sedimentation Rate Analysis in Dock C PT. Petrokimia Gresik, Indonesia

Hydrotreating of bio-crude obtained from hydrothermal liquefaction of biopulp: effects of aqueous phase recirculation on the hydrotreated oil

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

Contact Info

Product

Resources

About