Environmental biotechnology in wastewater treatment

Zgavarogea, Ramona; Niculescu, Violeta; Miricioiu, Marius Gheorghe; Ciucure, Corina Teodora; Tempea, Iosif

doi:10.1016/j.jbiotec.2015.06.177

Journal of Biotechnology

2015

DOI: 10.1016/j.jbiotec.2015.06.177

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Environmental biotechnology in wastewater treatment

Ramona Zgavarogea¹,

Violeta Niculescu²,

Marius Gheorghe Miricioiu³

et al.

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“…The municipal and industrial water is treated before being discharged into rivers in order to remove the pollutants. Wastewater contains a number of organic, inorganic, toxic and pathogenic components [2][3][4][5]. Pollutants form a semi-solid residue in wastewaters, namely sewage sludge, which require sterilization, stabilization and disposal treatments [6,7] Sewage sludge (SS) is rich in nitrogen, phosphorus and potassium, being used worldwide in agricultural-forestry area, as an "ideal fertilizer", due to its low cost and abundance.…”

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Thermochemical Decomposition of Sewage Sludge � An Eco-Friendly Solution for a Sustainable Energy Future by Using Wastes

Zaharioiu¹,

Bucura²,

Ionete³

et al. 2020

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The study aims to promote clean energy technologies that ensure the recycling and recovery of waste, namely the sewage sludge (SS), by converting it into products (e.g. oil, gas) with added value, contributing thus to reducing the negative impact on environment and health. An experimental setup was proposed in order to achieve the pyrolysis process, by varying the heating rate, (5�C/min, 10�C/min and 50�C/min). The resulted products, namely i) char - SSPyChar, ii) oil - SSPyOil and iii) gas - SSPyGas, were investigated in terms of elemental content, high heat value (HHV), low heat value (LHV) and emission factor (EF). The pyrolysis oils obtained with lower heating rate, 5�C/min and 10 �C/min, presented higher HHV, in comparison with the oils obtained at 50 �C/min, which were rich in water. These oils can have a negative impact on the environment, through their combustion due to their high content of N (6 wt%) and S (1.2 wt%), responsible for the formation of NOx and SOx. Pyrolysis gas revealed in its composition high contents of hydrocarbons (C1-C6), carbon dioxide (CO2) and hydrogen (H2). The highest HHV was obtained by using 5�C/min increment, namely 33.81 MJ/m3. Also, the pyrolysis gases had comparable energy values with natural gas, biogas or gases resulted from the plastic pyrolysis.

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Thermochemical Decomposition of Sewage Sludge � An Eco-Friendly Solution for a Sustainable Energy Future by Using Wastes

Zaharioiu¹,

Bucura²,

Ionete³

et al. 2020

Rev. Chim.

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Effects of microplastic sorption on microbial degradation of halogenated polycyclic aromatic hydrocarbons in water

Sun

Ren

2022

Environmental Pollution

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Environmental biotechnology in wastewater treatment

Cited by 2 publications

References 0 publications

Thermochemical Decomposition of Sewage Sludge � An Eco-Friendly Solution for a Sustainable Energy Future by Using Wastes

Thermochemical Decomposition of Sewage Sludge � An Eco-Friendly Solution for a Sustainable Energy Future by Using Wastes

Effects of microplastic sorption on microbial degradation of halogenated polycyclic aromatic hydrocarbons in water

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