Although activated sludge (AS) diffusion is promising for odor control, disagreement still exists on its treatment efficiency of varying odorants, and microbiological mechanisms remain largely unknown. Herein, we investigated the deodorization efficiency, wastewater performance, ecological effects AS in two situ membrane bioreactors (MBRs). removed ≥ 94.7% H2S 100% NH3, while other odorants wer...

An experiment was conducted to investigate whether feeding menhaden oil (MO) to hens affects egg weight, and whether using deodorized MO (DMO) could ameliorate decreased sensory quality of eggs (characteristic for hens fed high fish oil diets). Two-hundred twenty-four Single Comb White Leghorn hens were allocated to seven dietary treatments comprising either no fish oil, DMO, or regular MO (RMO...

Glycidyl fatty acid esters (GEs) are found in some refined edible oils. It is thought that GEs may be broken down by lipase and release glycidol which has been classified as a genotoxic and carcinogenic compound. GEs are formed during deodorization step in the oil refining process. The deodorizing temperature occurs at temperatures of about 200 to 250°C. The cooking temperature is also around 2...

Phenol, p-cresol, and volatile fatty acids (VFA; acetic, propionic, isobutyric, butyric, isovaleric, and valeric acids) were used as odor indicators of swine waste. Aeration of the waste allowed the indigenous microorganisms to grow and degrade these malodorous substances. The time required for degradation of these substances varied according to the waste used, and it was not necessarily relate...

In There are few simulation studies in the literature focusing on production of biodiesel from vegetable oil deodorization distillate (VODD), a waste originating processing stage, using hydrotalcite-hydroxyapatite as heterogeneous catalyst. this study, process was performed open interface software DWSIM® Version 6.3. The motivation relied positive performance catalyst during experimental studie...

Breeding sturgeons in aquaculture is the only way to preserve them as a raw material for fish food products today. In this regard, not need development of commercial sturgeon breeding obvious, but also importance research aimed at studying and developing optimal modes industrial cultivation different species sturgeon. The aim work expand range compound feed sturgeons, expense unused reserves ex...

感覚的消臭効果を測定する方法として，既往の臭気強度法注1）よりも客観性に優れていると考えられた認知臭気濃度法注2）が提案されている．本研究では，認知臭気濃度法により複数の消臭剤の消臭能力を比較確認後，臭気強度法との定量的な比較を行った．その結果，認知臭気濃度法では，芳香空気存在下でも，臭気強度0.5の差に相当する臭気指数差の違いが分かることが確認された．また，臭気強度法では消臭効果の差異を示すことができなかった2芳香間の違いについて，認知臭気濃度法では有意な差が得られることも確認した．この2芳香間での消臭効果の差異は，一般消費者を用いた評価結果でも検証できた．