Hydrolysis is the most critical stage in high solids Temperature Phased Anaerobic Digestion (TPAD). In this paper two different Organic Fraction of Municipal Solid Waste (OFMSW) types were tested co-digestion with Digested Sludge (DS) at temperatures: 37, 55 and 65 °C. Volatile fatty acids (VFAs), soluble chemical oxygen demand (CODs) Biochemical Methane Production (BMP) measured calculated aft...

It was hypothesized that nutrient removal from waste­ water could be achieved by using methane oxidizing bacteria (melhan­ otrophs). Because methane is inexpensive. it can be used as an energy source to encourage bacterial growth to assimilate nitrogen and phos­ phorus and other trace elements. This initial feasibility study used syn­ thetic nutrient mixtures and secondary sewage effluent as fe...

Sunny Day Farm was the home of the highest producing registered Jersey herd in the world at the time this study was conducted. The cows are housed in a freestall barn and manure is removed from the barn using a flush system. The manure treatment system on this farm includes the following components in series: an inclined stationary screen separator, a two–chambered settling basin, and a lagoon....

This study focuses on identifying the optimum conditions of sewage sludge hydrothermal carbonization by Box–Behnken Design and effects volatile solids heating value process water load. To get insight into solid characteristics, we applied reaction temperature (190, 220, 250 °C), time (0.5, 2.25, 4 h) pH (3.9, 5, 6.1). The response surface liquid phase revealed decreasing dissolved organic carbo...

This study investigated the effectiveness of magnesium in reducing sodium toxicity in mesophilic (35oC) completely mixed anaerobic digesters (CMADs). The CMADs were operated at a chemical oxygen demand (COD) loading of 0.5 g/l/day initially which was gradually increased to 1.8 g/l/day. To evaluate the effect of sodium concentration on methanogens, the biomass in one of the CMADs was acclimated ...

Parameters from single-component isotherm models were used in multicomponent isotherm models to predict the aqueous phase sorption of trichloroethylene (TCE) in the presence of tetrachloroethylene (PCE) in four zeolites, Tenax, and three natural solids. The Langmuir, the Polanyi-Dubinin, and the Freundlich or the Langmuir-Freundlich isotherm models were used to simulate single-component sorptio...

Abstract A continuous lab-scale integrated bio-system was conducted to treat sewage wastewater from Abu-Rawash treatment plant (WWTP). The showed high efficiency in removing chemical oxygen demand (COD), biological (BOD 5 ), and total suspended solids (TSS). experimental analysis results indicated that the maximum COD removal methane yields were 97.6 13.74 mmol CH 4 /Kg at a hydraulic retention...

The best co-digestion ratio between mezcal vinasses and bovine manure was investigated to produce methane.Five mixtures in different proportionswere compared (v/v): 25-75, 50-50, 75-25, 100-0, 0-100, with six replications. As reactors, 496 mL glasscontainers hermetic seal were used, 300 of active volume under mesophilic conditions (36 ± 1 oC) for 10 days. pH, total solids, volatile solids vinas...

Bunch rot and noble development were simultaneously instigated on healthy Vitis vinifera cv. Furmint bunches collected in the Tokaj wine region Hungary. Bunches transferred into a growth chamber with controlled temperature humidity exhibited symptoms of two forms botrytization. Berries exposed to rot-inducing conditions gradually dehydrated showed higher level soluble solids but less biomass Bo...