The aim of this study was to investigate the impact biochar addition on mesophilic semi-continuous anaerobic digestion swine waste with a focus effects organic loading rate (OLR) biogas production, methane yield, total volatile fatty acids (TVFA), alkalinity, ammonium, solids (VS) removal efficiency and process stability. Four reactors, two amended (R1 R2) without as controls (R3 R4), were oper...

Phenol biodegradation under aerobic conditions and its effect on the nitrification process were studied, first in batch assays and then in an activated sludge reactor. In batch assays, phenol was completely biodegraded at concentrations ranging from 100 to 2500 mg l(-1). Phenol was inhibitory to the nitrification process, showing more inhibition at higher initial phenol concentrations. At initi...

This present paper reports a study of the efficiency of an anaerobic Baffled Reactor (ABR) composed of three chambers working as the first stage of a biological treatment system for swine wastewater, over a period of 116 days. The average value of the volumetric organic loading rate (VOLR) was 17.8 kgCODtotal m d, the biological organic loading rates (BOLR) based on total and filtered COD influ...

Aerobic treatment is an alternative to the slower anaerobic treatment processes for concentrated industrial wastewater such as food processing wastewater. This paper reviews the performance of various aerobic treatment methods for the treatment of food processing wastewaters. It was noted that the total chemical oxygen demand (COD) removal efficiencies and process capacities were affected by th...

A study has been conducted to investigate the effect of loading rates on membrane fouling in a moving bed biofilm membrane reactor process for municipal wastewater treatment, especially analysing the fate of submicron colloidal particles and their influence on membrane fouling. Two operating conditions defined as low and high organic loading rates were tested where the development and fate of t...

This paper investigates the development of a simple model for the optimization of codigestion not only using the Biochemical Methane Potential (BMP) but also using the degradation kinetics. This study concerns an experimental work on the implementation and the operation of continuous reactors fed with different fruits and vegetables wastes at different organic loading rates. A simple model was ...

Biogas production from pineapple peel was to preliminary study for value added to this agro-industrial solid waste. The objective of this research was to fine the optimum condition for maximum biogas production. The experiments were performed in a lab-scale of 6 liters of bioreactors at ambient temperature (approx. 30 o C). The biogas production was conducted under single stage batch processes ...

Excess phosphorus, particularly in surface waters can lead to severe eutrophication. Identifying source areas, quantifying contributions, and evaluating management practices are required to address current and future water quality concerns. A before-after study was conducted from 2003-2010 on a sub-watershed of Northland Country Club Golf Course in Duluth, MN to demonstrate the impacts of two d...