High-value utilization method of microalgae energy

• Main Authors: PENG YANG, ZHANG CHUXUAN, ZENG JIANHUI, GONG XUN, XU MINGHOU, FENG TIANYI, LIN LUQIU
• Format: Patent
• Language: Chinese; English
• Published: 22.03.2022
• Subjects: ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE ORUNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; ANIMAL AND VEGETABLE OILS, FATS, FATTY SUBSTANCES AND WAXES; BEER; BIOCHEMISTRY; CANDLES; CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; COMPOSITIONS THEREOF; CULTURE MEDIA; DETERGENTS; ENZYMOLOGY; FATS, OILS OR FATTY ACIDS BY CHEMICAL MODIFICATION OF FATS,OILS, OR FATTY ACIDS OBTAINED THEREFROM; FATTY ACIDS FROM FATS, OILS OR WAXES; FATTY ACIDS THEREFROM; FIRELIGHTERS; FUELS; FUELS NOT OTHERWISE PROVIDED FOR; LIQUEFIED PETROLEUM GAS; LUBRICANTS; METALLURGY; MICROBIOLOGY; MICROORGANISMS OR ENZYMES; MUTATION OR GENETIC ENGINEERING; NATURAL GAS; PEAT; PERFORMING OPERATIONS; PETROLEUM, GAS OR COKE INDUSTRIES; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; PROCESSES USING MICROORGANISMS; PROPAGATING, PRESERVING OR MAINTAINING MICROORGANISMS; SEPARATION; SPIRITS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BYSUBCLASSES C10G, C10K; TECHNICAL GASES CONTAINING CARBON MONOXIDE; THEIR RELEVANT APPARATUS; TRANSPORTING; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE; VINEGAR; WINE

The invention discloses a microalgae energy high-valued utilization method, which comprises the following steps: step 1, culturing microalgae by using pretreated industrial sewage, and simultaneously introducing coal-fired flue gas into the industrial sewage, the coal-fired flue gas comprising CO2, nitrogen oxides and sulfur oxides; step 2, performing mineralization treatment on the microalgae cultured in the step 1 to obtain mineralized microalgae, generating magnetic particles on the surface of the mineralized microalgae in situ by adopting a coprecipitation method, and continuously culturing the obtained mineralized magnetized microalgae in sewage; step 3, performing magnetic separation harvesting on the mineralized and magnetized microalgae, separating a mixed solution of the microalgae and the magnetic nanoparticles after magnetic separation harvesting through a magnetic separator, and liquefying the microalgae separated by the magnetic separator to obtain biodiesel; and step 4, carrying out modification