Wastewater: A Potential Bioenergy Resource

Abstract

Wastewaters are a rich source of nutrients for microorganisms. However, if left unattended the biodegradation may lead to severe environmental hazards. The wastewaters can thus be utilized for the production of various value added products including bioenergy (H and CH). A number of studies have reported utilization of various wastewaters for energy production. Depending on the nature of the wastewater, different reactor configurations, wastewater and inoculum pretreatments, co-substrate utilizations along with other process parameters have been studied for efficient product formation. Only a few studies have reported sequential utilization of wastewaters for H and CH production despite its huge potential for complete waste degradation.

Assessment of the Impact of Bioenergy on Sustainable Economic Development

“…Report [24] identifies the main local biomass sources that could be used as sustainable raw materials for bio-industries as well as the main players in the relevant sectors and the opportunities for the development of industries based on these activities. According to the BIC report, agriculture and forestry, in conjunction with other industries such as food processing, wood industry, paper and pulp industry, can produce large amounts of waste used for bioenergy [25][26][27][28][29][30]. In addition, the agriculture sector employs 23.1% of the labor force [24].…”

Bio-hydrogen production by co-digestion of domestic wastewater and biodiesel industry effluent

“…A similar response on recycling of effluent from H2 production stage was shown in our previous study, where sterile distilled water was used for preparing the slurry [ 23 ]. Another interesting aspect of this study is the possibility of further utilization of effluent of H 2 production stage for producing value added products such as polyhydroxyalkanoates and CH 4 [ 14 , 18 ].…”

“…H 2 production from various industrial wastewaters such as cassava starch processing wastewater, brown sugar wastewater, paperboard mill wastewater, ethanol wastewater, etc. have been reported [ 12 – 18 ]. Sugar rich wastewaters such as molasses wastewater, sugarbeet wastewater and sugarcane vinasse have the ability to produce high H 2 yields of around 3.2 mol/mol substrate.…”

Transformation Products of Carbamazepine (CBZ) After Ozonation and their Toxicity Evaluation Using Pseudomonas sp. Strain KSH-1 in Aqueous Matrices

“…In past few decades, a lot of research has been focused on the production of value added materials and energy production in order to meet the global energy crisis in coming generations. In this context, wastewaters have also been utilized as an alternate source for production of energy [8]. Advanced oxidation processes (AOPs) have been extensively used as potential treatment processes for removal of pharmaceuticals from real and synthetic wastewater matrices [9,10].…”

“…Schematic diagramshowing experimental set-up for ozonation experiments (1) Oxygen concentrator, (2) ozone generating system (ORAIPL), (3) ozone analyzer BMT, Germany, (4) ozone destructor, (5) Magnetic stirrer unit, (6) Control panel system for the reactor, (7) Data acquisition system,(8) Cooling Water Inlet and outlet, (9) pH electrode, (10) Sampling port,(11) Magnetic stirring bar,(12) Sparger, (13) Head plate,(14) Ambient…”