This paper investigates the valorization potential of two biowaste types resulting from biotrickling filtration volatile organic compounds (i.e., ethanol) and carbon dioxide air by co-immobilized microalgae compost heterotrophs, which were either attached on polypropylene spheres or entrapped within alginate beads. In this regard, biomass samples surface packing (S1) waste beads (S2) underwent ...

Textile wastewater contains substantial pollution loads in terms of Chemical Oxygen Demand (COD), Biological Oxygen Demand (BOD), Total Suspended Solids (TSS), Total Dissolved Solids (TDS) and heavy metals. Phytoremediation used for removing heavy metals and other pollutants by aquatic macrophytes treatment systems (AMATS) is well established environmental protective technique. A lab scale stud...

Anaerobic microbial reductive dechlorination of PCBs is important because it removes the chlorine substituents that block aerobic metabolism and it reduces PCB toxicity. Although this process occurs widely in nature, its extent is often limited to dechlorination of some of the chlorines in the meta positions of biphenyl. In this report we demonstrate the ability to achieve nearly complete meta ...

Effective cometabolic biodegradation of trichloroethylene (TCE) vapors in a novel gas-phase bioreactor called the foamed emulsion bioreactor (FEBR) was demonstrated. Toluene vapors were used as the primary growth substrate for Burkholderia cepacia G4 which cometabolically biodegraded TCE. Batch operation of the reactor with respect to the liquid feed showed a drastic decrease of TCE and toluene...

Olive oil extraction produces large amounts of residues. These olive-mill wastes are known as alpechin. Alpechin-polluted waste waters are resistant to degradation. They are regarded as a severe environmental problem because of their high organic content, largely simple phenolic compounds that are both antimicrobial and phytotoxic. During the past years, most of the investigations related to al...

The black soldier fly (BSF) is recognised as a valuable insect for mitigating feed and organic waste management challenges. Thus, concerted efforts are being directed toward the promotion of BSF. Despite numerous advantages BSF larvae, there several critical environmental aspects, particularly its global warming potential, that need to be considered before large-scale adoption due complexity in...

Microalgae culture is an interesting step in wastewater treatment since it provides a tertiary biotreatment while also producing potentially valuable biomass that may be used for variety of applications. cultures, with their ability to utilize inorganic nitrogen and phosphate growth, provide elegant solution quaternary treatments. Scenedesmus quadricauda was employed three different doses, 2g/l...

Nowadays, a large amount of municipal solid waste incineration bottom ash (IBA) is produced from plants; therefore, it still challenge for IBA management. To investigate the potential microbially-induced carbonate precipitation (MICP) treatment, harmless biobinder was prepared by using biosolutions with different bacterial concentrations. A series tests were carried out on sample treated biosol...

Biological treatment of waste water involves bacteria, which remove waste products from the treated water and kill pathogens. Thus, this problem is closely linked to both the population dynamics and chemical kinetics. Aerobic process is very efficient but rather costly, as it requires aeration of the treated water. An aim of this paper is to explore the possibility to apply the ideas and method...

Environmentally friendly pretreatment of double refractory gold ores (DRGO) to improve recovery without emitting pollutant gas is challenging. Sequential biotreatment, including iron-oxidizing microorganisms decompose sulfides, followed by the enzymatic decomposition carbonaceous matter, was recently developed. The effect acid washing 1 M HCl for 24 h between two bioprocesses evaluated using a ...