Photocatalytic reforming of aqueous phase obtained from liquefaction of household mixed waste biomass for renewable bio-hydrogen production

Rajagopal, Jayaraman; Gopinath, Kannappan Panchamoorthy; Krishnan, Abhishek; Nagarajan, Vikas Madhav; Arun, Jayaseelan

doi:10.1016/j.biortech.2020.124529

Cited by 24 publications

(3 citation statements)

References 41 publications

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“…With an increase in temperature from 280 to 310 °C, the HBO fraction increased substantially from 18.9 to 29.6% w/w , whereas the LBO and WS fractions had slight changes with average values of approximately 9.7 and 12.8% w/w , respectively. Compared to a previous study (Rajagopal et al 2021 ), the trend of increasing biocrude oil production was the same, except for the WS fraction, which was reported to decrease at a higher temperature. By increasing the residence time from 15 to 45 min, both biocrude oil fractions increased slightly.…”

Section: Resultscontrasting

confidence: 43%

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Conversion of tobacco processing waste to biocrude oil via hydrothermal liquefaction in a multiple batch reactor

Saengsuriwong

Onsree

Phromphithak

et al. 2021

Clean Techn Environ Policy

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Graphic abstract Fossil fuels are the primary energy source of almost all societies and economies, but it is finite and scarce. The use of non-renewable fossil fuels threatens earth’s environment. At the same time, waste from agricultural and industrial activities is increasing. Most of this waste is discarded or poorly managed, causing many other environmental issues. Converting waste to energy is a promising route to address these challenges. We investigated the hydrothermal liquefaction (HTL) of high moisture content, tobacco-processing waste in a multiple batch thermal reactor to produce biocrude oil. The effects of operating conditions were studied and optimized for maximum liquid biocrude oil yield. HTL operating conditions considered were temperatures from 280 to 340 °C and residence times from 15 to 45 min for a fixed ratio of biomass to deionized water of 1:3. The reaction temperature was found to affect the yields and distribution of products significantly. The maximum yield of the liquid biocrude oil obtained was more than 52% w/w at 310 °C and 15 min. Under these conditions, almost 90% of the energy was recovered in biocrude oil and solid products. The liquid fraction was mainly composed of phenols, ketones, and nitrogenous compounds. This study provides a potential framework for eco-technologies for biomass waste-to-energy conversion with respect to converting tobacco processing residues to liquid biofuels and biochemicals.

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Section: Resultscontrasting

confidence: 43%

“…The higher heating value (HHV) of the liquid products was approximated by Eq. 3 (Rajagopal et al 2021 ): where , , and are the carbon, hydrogen, and oxygen contents of each liquid product (in w/w ). The energy recovery ( ) of the products was calculated from Eq.…”

Section: Methodsmentioning

confidence: 99%

Conversion of tobacco processing waste to biocrude oil via hydrothermal liquefaction in a multiple batch reactor

Saengsuriwong

Onsree

Phromphithak

et al. 2021

Clean Techn Environ Policy

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“…CO2-equivalents account for 71% of the external expenses whereas the NOx and SO2 account for 27% and less than 2% of the total expenditures correspondingly [7]. In terms of treatment part of organic waste, in the advanced study, the hydrogen gas extracted from the HTL "Hydrothermal liquefaction" was 21% which could be a helpful technology for university campuses [24]. Another valuable strategy is The Decision Support System (DSS) through a Machine Learningbased Artificial Intelligence platform that optimises the hydrothermal liquefaction process of various biomass resources in a decentralised system [25].…”

Section: Attempt To Make Zero Waste Automated Campusmentioning

confidence: 94%

Pneumatic waste collection system - A proposed innovation for Indian Institute of Technology, Roorkee Campus, India

Kumar

Agrawal

2023

IOP Conf. Ser.: Earth Environ. Sci.

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Solid Waste Management (SWM) is a challenging issue to be addressed in most of the urban centres in India. Heavy population densities and exponential growth of the cities’ boundaries, due to migration, create kiosks to the cities’ resources such as land and other amenities. In such cities, the unsegregated waste gets generated in huge quantities while the rest are dumped in landfill sites without any specific treatment. Centralised and holistic approaches are missing, as most of the waste-to-energy & waste treatment plants are either getting closed or not working to its fullest efficiency. The strategies for a decentralised collection system, segregation and treatment of waste are not usually standard practices. In spite of the global impacts being pretty visible due to global warming, a massive amount of plastic gets dumped into ocean, which reaches the human beings via food chain and results in the most number of incurable diseases like cancer. Further, it also results in rapid extinction of the indigenous species. Campuses are known as mini-city or autonomous urban centres for knowledge sharing and the development of innovations. The time is here to make the Indian campuses smatter in collecting and treating the waste on their premises. Hence, the pneumatic collection process of the garbage can play an essential role in making the campus, an advanced and a sustainable one. Thus, there is an urgent need to develop a compact and a decentralised strategy to manage the waste in various urban centres. Also, a formalised informal sector of waste could be contributing to further recycling and processing of the garbage on the campus. The aim of the current research investigation is to identify various possibilities for making the campus, a smart one, in terms of waste management. Furthermore, the study also intends to find out how the compact, decentralised waste collection methods in urban can manage their solid waste in the limited available space. Making zero-waste campuses is a herculean task and a massive challenge must be dealt with immediately to help the cities achieve long-term sustainability.

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Recent Advances in Hydrothermal Liquefaction of Microalgae

Vaishnavi¹,

Gopinath²,

Ghodke

2022

Clean Energy Production Technologies

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Photocatalytic reforming of aqueous phase obtained from liquefaction of household mixed waste biomass for renewable bio-hydrogen production

Cited by 24 publications

References 41 publications

Conversion of tobacco processing waste to biocrude oil via hydrothermal liquefaction in a multiple batch reactor

Conversion of tobacco processing waste to biocrude oil via hydrothermal liquefaction in a multiple batch reactor

Pneumatic waste collection system - A proposed innovation for Indian Institute of Technology, Roorkee Campus, India

Recent Advances in Hydrothermal Liquefaction of Microalgae

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