Enhanced biohydrogen production from nutrient-free anaerobic fermentation medium with edible fungal pretreated rice straw.

An edible fungal pretreatment of rice straw was proposed for enhanced hydrogen production while reducing the chemical cost for traditional biological hydrogen production from lignocellulose. In this research, rice straw was pretreated by edible fungus J2 at room temperature under static conditions for 15 d at first. The highest hydrogen yield of 5.

Changes in stream peak flow and regulation in Naoli River watershed as a result of wetland loss.

Hydrology helps determine the character of wetlands; wetlands, in turn, regulate water flow, which influences regional hydrology. To understand these dynamics, we studied the Naoli basin where, from 1954 to 2005, intensive marshland cultivation took place, and the watershed's wetland area declined from 94.4 × 10(4)ha to 17.

Effect of seed sludge on characteristics and microbial community of aerobic granular sludge.

Aerobic granular sludge was cultivated by using different kinds of seed sludge in sequencing batch airlift reactor. The influence of seed sludge on physical and chemical properties of granular sludge was studied; the microbial community structure was probed by using scanning electron microscope and polymerase chain reaction-denaturing gradient gel electrophoresis (PCR-DGGE). The results showed that seed sludge played an important role on the formation of aerobic granules.

[Influence of flocculant bacterium on characteristics of aerobic granular sludge].

The aerobic granular sludge was cultivated by adding flocculant bacteria in sequencing batch airlift reactor (SBAR), the physical-chemical properties and biodegradation effect of granules were studied so as to investigate the influence of flocculant bacterium on characteristics of aerobic granular sludge. The results showed that flocculant bacterium could prompt granulation process, the aerobic granules could be successfully cultivated when the dose of flocculants was between 0-20 mL/L. The optimum dose was 10 mL/L, in this case the formation of aerobic granules needed 35d which was faster than that of 42 d in blank experiment, and SVI was around 40 mL/g, settling velocity reached 35.

Bis[4-(4-pyridyl-meth-oxy)phenol-κN]silver nitrate monohydrate.

In the title compound, [Ag(C(12)H(11)NO(2))(2)]NO(3)·H(2)O, the Ag(I) ion is coordinated by two N atoms from two different 4-(4-pyridyl-meth-oxy)phenol ligands, generating a nearly linear coordination geometry with an N-Ag-N angle of 167.1 (1)°. A three-dimensional supra-molecular network is built from the uncoordinated nitrate anion, the water mol-ecule and the cation through O-H⋯O hydrogen bonds.

Thermal-behavior study of chlorine released from composite refuse derived fuel.

In order to reduce secondary pollution during the incineration of composite refuse derived fuel (CRDF), the combustion features and the emission behavior of chlorine in CRDF containing coal were analyzed. The former was analyzed using thermo-gravimetric and the latter by gas chromatography-mass spectrometry. The release rate of inorganic chlorine during combustion reached 90 mass% at temperature between 773.