Recently, profitable Macrobrachium rosenbergii farming has developed rapidly in Asia. The occurrence of cyanobacterial blooms is one the major environmental problems usually encountered freshwater prawn farms. This study investigated effects pond water depth and aeration mode on phytoplankton communities selected M. ponds China. We adjusted (pond depth: 1.2 m or 1.8 m; method aeration: surface ...

Petroleum refining industries produce large amounts of toxic effluents, causing environmental pollution. Iran is an oil-rich country that encounters oil pollution in its soil and water. Bioremediation of these pollutants is an appropriate solution to tackle them, compared to physical and chemical remediation methods. There are some factors that increase the rate of biodegradation; therefore, th...

Aeration using automatic controllers was compared with manually‐activated aeration (manual aeration) in bins of farm‐stored rice in Nome, Texas, from 17 September 2002 through the end of the year. Manual aeration was defined as the farm owner manually activating the fans in mid‐October, while automatic aeration employed activation temperatures of 23.9 C, 15.6 C, and 7.2 C for three discreet coo...

Spray aeration is a comparatively low-cost option to reduce trihalomethane (THM) concentrations in distribution system storage. The effect of spray on unregulated, toxic disinfection by-products was investigated bench-scale apparatus closed-tank and open-tank experiments. In the experiments, initially over 90% THMs, trichloroacetonitrile, chloropicrin were removed, while 36% dihaloacetonitriles...

A study of the dynamics crude oil decomposition was carried out using bio-preparations “Glaukoil” and “Lenoil” various methods (aeration, application a sorbent biological product at different times, use polymer shelter, addition moisture-retaining component distribution dose mineral fertilizers) in order to optimize destruction technology emergency spills. It is shown that most effective are po...

Ethanol fermentation requires oxygen to maintain high biomass and cell viability, especially under very-high-gravity (VHG) condition. In this work, fermentation redox potential (ORP) was applied to drive the aeration process at low dissolved oxygen (DO) levels, which is infeasible to be regulated by a DO sensor. The performance and characteristics of flocculating yeast grown under 300 and 260 g...

The water train of three WWTPs have been modelled following the procedures of the Benchmark Simulation Model (BSM) platform (Gernaey et al., 2014). Additionally the aeration system has been modelled to evaluate airflows and energy performance. The results for the airflow model are presented. The chosen airflow model is shown to be easy to apply and calibrate and robust for practical modelling c...

Roots may respond to restrictive soil physical conditions and send signals to shoots to control plant growth. Soil mechanical resistance and aeration can be managed to improve the soil physical conditions for plant growth by using different tillage systems. The objective of this study was to quantify the influence of no-tillage and conventional-tillage systems on plant response to soil mechanic...