Pyrolysis of water hyacinth in a fixed bed reactor: Parametric effects on product distribution, characterization and syngas evolutionary behavior

Rahman, M.A.

doi:10.1016/j.wasman.2018.09.028

Cited by 42 publications

(27 citation statements)

References 36 publications

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“…To have an economic edge of sustainable waste management, adoption of multi‐product synthesis technology through utilization of waste of one process as an initial raw material for the next process. Even though, there were studies available of thermochemical processing of WH earlier (Biswas, Singh, Krishna, Kumar, & Bhaskar, 2017; Rahman, 2018) an objective has been made through this study to subject the digestate obtained after digestion for pyrolysis and comparing the bio‐oil property between the raw WH and digestate.…”

Section: Resultsmentioning

confidence: 99%

Sequential valorization strategies for dairy wastewater and water hyacinth to produce fuel and fertilizer

Arutselvy

Rajeswari

Jacob

2020

J Food Process Engineering

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To overcome the obstacles of treatment of dairy wastewater (DW) under anaerobic mono‐digestion and sustainable disposal of harvested water hyacinth (WH) a novel sequential valorization strategy was adopted to obtain fuel and fertilizer. Initially, DW and WH were subjected for anaerobic co‐digestion to elucidate the synergistic effect of the substrates to improve the process efficiency and increased biomethane production. The results indicated that the co‐digestion mixture (DW: WH‐1:1) has resulted in biomethane yield of 504.38 L/Kg VSfed which is 1.28‐fold and 3.14‐fold higher as compared to the mono‐digestion of WH (431.71 L/Kg VSfed) and DW (160.59 L/Kg VSfed), respectively. Further, the residual digestate was subjected for slow pyrolysis (320 ± 15°C) to obtain bio‐oil and biochar. The obtained bio‐oil shown superior fuel characteristics as compared to direct WH bio‐oil resulting in density, viscosity, and calorific value of 1.21 ± 0.04 g/ml, 1.8 ± 0.05 cSt and 1766.82 ± 11.53 KJ/Kg, respectively. The biochar residue from pyrolysis was amended to the soil to determine its bio‐fertilizing property. The soil properties in terms of bulk density, porosity, organic carbon, and pH were enhanced. Tomato cultivation in biochar amended soil shown comparable vegetative growth to that of digestate and urea thereby advocating the replacement of chemical fertilizers. Practical Application With recent increase in environmental concerns and requirement to meet the prescribed limits for effluent discharge from the industries, especially from food processing for the protection of aquatic bodies, there is a requirement of adoption of cost effective technology that could provide both economic and ecological sustainability. In this study, a sequential valorization strategy was adopted for efficient management of dairy wastewater and harvested water hyacinth from the water resources. The resultant products biogas, bio‐oil and biochar could be potentially used as fuel and fertilizer. Circular bio‐economy is in need of time which could be attainable by the implementation of such strategies in large scale industries for efficient waste management and resource recovery. This will not only benefit the environment but also to the society by galvanizing the sustainable development technology.

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Section: Resultsmentioning

confidence: 99%

Sequential valorization strategies for dairy wastewater and water hyacinth to produce fuel and fertilizer

Arutselvy

Rajeswari

Jacob

2020

J Food Process Engineering

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“…For this reason, considerable attention has been paid to the use of WH to prepare functional carbon materials or value-added chemicals. 2,[4][5][6][7][8][9][10] Hydrothermal carbonization (HTC) is a simple process to convert biomass into carbon materials, performed using water as the medium in a closed system at self-generated pressure and moderate temperatures (150-350 C). 11,12 The process involves hydrolysis and dehydration of lignicellulosic compounds in the biomass.…”

Section: Introductionmentioning

confidence: 99%

Green and sustainable zero-waste conversion of water hyacinth (Eichhornia crassipes) into superior magnetic carbon composite adsorbents and supercapacitor electrodes

et al. 2019

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Troublesome aquatic weed, water hyacinth (Eichhornia crassipes) was converted into solid and liquid fractions via green and energy-saving hydrothermal carbonization (HTC). The solid product, hydrochar, was employed as a precursor to prepare magnetic carbon materials by simple activation and magnetization using KOH and Fe 3+ ions, respectively. The obtained magnetic adsorbent possessed good magnetic properties and presented outstanding capacities to adsorb methylene blue (524.20 mg g À1 ), methyl orange (425.15 mg g À1 ) and tetracycline (294.24 mg g À1 ) with rapid adsorption kinetics even at high concentrations (up to 500 mg L À1 ), attributed to high specific surface area and mesopore porosity.Besides the solid hydrochar, the water-soluble liquid product was used to fabricate carbon-based supercapacitors through facile KOH activation with a considerably lower KOH amount in comparison to conventional activation. The supercapacitor electrode made from activated liquid product possessed an extremely high specific surface area of 2545 cm 2 g À1 and showed excellent specific capacitance (100 F g À1 or 50 F cm À3 at 1 A g À1 ) and good retention of capacitance (92% even after 10 000 cycles). This work demonstrated that both solid and liquid HTC fractions from this bio-waste can serve as effective sources to prepare functional carbon materials, making this approach a sustainable zero-waste biomass conversion process. Scheme 1The preparation steps of magnetic adsorbent (MWHHTC(1)-800) and carbon-based supercapacitor (CLP + KOH-800) using water hyacinth as a carbon precursor.This journal is

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“…Temperatur pirolisis berpengaruh terhadap hasil produk bio oil yang dihasilkan pada proses pirolisis eceng gondok, minyak pirolisis optimalnya dihasilkan pada temperature 350˚C dengan persentase sebesar 44,9 massa total dengan kondisi heating rate sebesar 30˚C /min dan partikel biomassa yang digunakan sebesar 0.5mm [8].…”

Section: Pendahuluanunclassified

“…Gambar 2 menunjukkan hubungan temperatur pirolisis terhadap persen massa produk char yang dihasilkan dari proses pirolisis eceng gondok dengan penambahan uap air dengan kondisi temperatur pirolisis pada reaktor biomassa 450 o C, 550 o C, dan 650 o C, yang dibandingkan dengan pirolisis eceng gondok tanpa penambahan uap air. Dapat dilihat pada Gambar 2 persen massa yang dihasilkan pada produk char seiring dengan peningkatan temperatur persen massa yang dihasilkan cenderung menurun, hal tersebut dikarenakan semakin tinggi temperatur proses pirolisis menyebabkan semakin banyak jumlah kandungan rantai karbon yang terdekomposisi [8].…”

Section: Hasil Dan Pembahasan 31 Hubungan Antara Temperatur Pirolisiunclassified

“…Besarnya tingkat senyawa oksigen disebabkan pada proses pirolisis eceng gondok terjadi fenomena dekomposisi, fragmentasi dan depolimerisasi pada lignin, selulosa dan hemiselulosa. Untuk senyawa asam yang terbentuk dihasilkan dari proses dekomposisi bagian utama dari lipid eceng gondok [8]. Penambahan uap air menyebabkan dampak peningkatan pada senyawa hidroksida (OH -) pada proses catalyst cracking yang terjadi pada reaktor katalis sehngga menyebabkan senyawa oksigen meningkat.…”

Section: Hubungan Antara Temperatur Pirolisis Terhadap Konsentrasi Seunclassified

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Pengaruh Variasi Temperatur Reaktor terhadap Hasil Produk Pirolisis Eceng Gondok Secara Ex-Situ dengan Katalis Bentonit dan Penambahan Uap Air

Hamidi

Firmansyah

Kusumaningsih

2020

JRM

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The water hyacinth has high growth rates that can lead to various environmental problems and the production of large amounts of waste biomass. However, it can be a source of lignocellulosic biomass for the production of bio-oil. This study aims to determine the effect of temperature variation on the pyrolysis process of water hyacinth ex-situ with bentonite catalyst and the addition of water vapor. Temperature variations used are 450°C, 550°C, and 650°C. The pyrolysis process uses 300 grams of water hyacinth and is carried out for 1 hour. The results showed that increasing pyrolysis temperature reduced the char and bio-oil products, but increased the product of gas. Pyrolysis at 450°C produces a lot of bio-oil, while at the temperature of 650°C tends to produce gas products. Also, increasing the pyrolisis temperature results in a higher density of bio-oil. Gas chromatograph testing was carried out to determine the content of organic compounds found in bio-oil. Hydrocarbons are obtained which increase with increasing temperature. The highest percentage of the content of organic compounds is in oxygen compounds. Components of alcohol, phenols, ketones, aldehydes are functional compounds found in the content of bio-oil. Acid compounds are also contained in bio-oil from the results of pyrolysis of water hyacinth.

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Pyrolysis of water hyacinth in a fixed bed reactor: Parametric effects on product distribution, characterization and syngas evolutionary behavior

Cited by 42 publications

References 36 publications

Sequential valorization strategies for dairy wastewater and water hyacinth to produce fuel and fertilizer

Sequential valorization strategies for dairy wastewater and water hyacinth to produce fuel and fertilizer

Green and sustainable zero-waste conversion of water hyacinth (Eichhornia crassipes) into superior magnetic carbon composite adsorbents and supercapacitor electrodes

Pengaruh Variasi Temperatur Reaktor terhadap Hasil Produk Pirolisis Eceng Gondok Secara Ex-Situ dengan Katalis Bentonit dan Penambahan Uap Air

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