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Graphical abstract The environmental parameters (total sugar concentration in fermentation broth, pH and DO) were optimized for the industrial acarbose fermentation by Actinoplanes sp. A56 in a 30000-l fermenter, as a result, approximately 5000 mg/l of acarbose was obtained.
Graphical abstract Schematic representation of the possible formation processes of hydrochars from lignocellulosic biomass via hydrothermal carbonization.
Highlights ► The sewage COD was successfully concentrated to allow subsequent energy recovery. ► Both aerated and vibrated membrane systems are efficient for COD up-concentration. ► The vibrated membrane filtration ensures less membrane fouling and energy usage.
Highlights ► Cheese whey was used as carbon source for Chlorella vulgaris growth. ► Mixotrophic microalgae grew faster than photoautotrophic cells. ► Maximum starch productivity was achieved under mixotrophic conditions. ► Highest pigment content (0.74%) was obtained in the...
Highlights ► Correlation of performance of reactor with microbial structure. ► Temperature specific DGGE fingerprints. ► Higher richness and diversity at 37 °C leading to better reactor performance. ► Acetoclastic methanogens at 37 °C replaced by hydrogenotrophic methanogens at 55 °C....
Highlights ► HPH pretreatment improved the organic matter biodegradation. ► HPH pretreatment promoted the biogas production. ► HPH pretreatment enhanced the sludge disintegration. ► Sludge disintegration degree was the key factor to improve anaerobic digestion.
Highlights ► Air flow intensity is analyzed and determined the best aeration condition for phytase production. ► Agitation was inefficient to help to remove CO 2 and metabolic heat. ► Respirometric quotient (RQ) was established during the fermentation and kinetics parameters of were...
Highlights ► Effect of microbial pretreatment on methane production of waste paper was evaluated. ► The VOPs and sCOD of hydrolysate increased obviously after microbial pretreatment. ► CH 4 production yields and rates significantly increased after microbial pretreatment.
Highlights ► Ion-exchange resins packed MDC can enhance water desalination rate. ► Desalination rates of resins packed MDC were 1.5–8 times those of classic MDC. ► Ohmic resistances in resins packed MDC were lower than those of classic MDC. ► Resins in desalination chamber counteracted...
Highlights ► Effects of microwave power (MP) and time (MT) on SE–MI process were investigated. ► Enzymatic hydrolysis yield and sugar yield increased with MP and MT rising. ► The maximum total sugar yield was 72.1 g/100 g glucose and xylose in feedstock. ► Microwave effect was important...
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