Evaluation of the effect of reaction time on nutrients removal from secondary effluent of wastewater: Field demonstrations using algal-bacterial photobioreactors.

Real field demonstrations to assess the removal efficiency of nutrients and organic matter from domestic wastewater were carried out using algal-bacterial photobioreactors. The reactors which consisted of three basins of 200 L were fed with secondary effluent of domestic wastewater and operated under natural day light/dark cycles. The results demonstrated that reaction time (RT) has a substantial role on the whole process performance.

Effects of compost stability and contaminant concentration on the bioremediation of PAHs-contaminated soil through composting.

The objective of this study was to investigate the effect of two factors: the stability degree (0.37-4.55 mg O(2) g(-1) Organic Matter h(-1)) of different composts derived from the organic fraction of municipal solid wastes and the concentration of a complex mixture of PAHs including fluorene, phenanthrene, anthracene, fluoranthene, pyrene and benzo(a)anthracene in the bioremediation of soil.

Optimization and enhancement of soil bioremediation by composting using the experimental design technique.

The objective of this study was the application of the experimental design technique to optimize the conditions for the bioremediation of contaminated soil by means of composting. A low-cost material such as compost from the Organic Fraction of Municipal Solid Waste as amendment and pyrene as model pollutant were used. The effect of three factors was considered: pollutant concentration (0.

Preliminary screening of co-substrates for bioremediation of pyrene-contaminated soil through composting.

The feasibility of using different organic amendments of different origin and properties in the bioremediation of pyrene-contaminated soil by means of composting has been tested. The selected pyrene concentration was 1g of pyrene per kg of dry soil. The organic amendments used include: raw organic fraction of municipal solid wastes (OFMSW), industrial compost from OFMSW composting (COFMSW), compost derived from home composting of OFMSW (HCOFMSW), anaerobically digested sludge (ADS), non-digested activated sludge (NDS) and centrifuged non-digested activated sludge (CNDS).