Title:
METHOD FOR PRODUCING POLYHYDROXYALKANOATE BY FERMENTATION OF AGRICULTURAL WASTES
Document Type and Number:
WIPO Patent Application WO/2023/010787
Kind Code:
A1
Abstract:
The present invention provides a method for producing a polyhydroxyalkanoate (PHA) by fermentation of agricultural wastes. In the present invention, a fermentation substrate is agricultural wastes, comprising a mixture of livestock and poultry manure and a planting industry waste. The method comprises: at a primary fermentation stage, a zymophyte is a lactic acid bacterium, a fermentation temperature is 35-55°C, a pH value is 3.0-6.0, and oxidation-reduction potential in a system is maintained at -250 to -450 mV by means of intermittent aeration; and at a secondary fermentation stage: aerobic fermentation is performed by using acclimated sludge, a fermentation temperature is 20-40°C, and a pH value is 7.0-9.0. According to the present invention, under the condition that an exogenous carbon source and an exogenous nitrogen source are not additionally added, an organic carbon source in the livestock and poultry manure and the planting industry waste is efficiently converted into the PHA, and thus, the production source of the PHA can be broadened, the production cost of the PHA can be reduced, and the potential pollution of the livestock and poultry manure and the planting industry waste is reduced.
Inventors:
DONG HONGMIN (CN)
WANG SHUNLI (CN)
ZHANG WANQIN (CN)
YIN FUBIN (CN)
CAO QITAO (CN)
LIAN TIANJING (CN)
ZHOU TANLONG (CN)
ZHU ZHIPING (CN)
WANG SHUNLI (CN)
ZHANG WANQIN (CN)
YIN FUBIN (CN)
CAO QITAO (CN)
LIAN TIANJING (CN)
ZHOU TANLONG (CN)
ZHU ZHIPING (CN)
Application Number:
PCT/CN2021/142357
Publication Date:
February 09, 2023
Filing Date:
December 29, 2021
Export Citation:
Assignee:
INST OF ENVIRONMENT AND SUSTAINABLE DEVELOPMENT IN AGRICULTURE CHINESE ACADEMY OF AGRICULTURAL SCIEN (CN)
International Classes:
C12P7/62; C12P39/00; C12R1/01; C12R1/225; C12R1/23; C12R1/25; C12R1/46
Domestic Patent References:
| WO2015110518A1 | 2015-07-30 | |||
| WO2014089436A1 | 2014-06-12 |
Foreign References:
| CN113337550A | 2021-09-03 | |||
| CN112063661A | 2020-12-11 | |||
| CN101735440A | 2010-06-16 | |||
| CN111394398A | 2020-07-10 | |||
| CN104357496A | 2015-02-18 | |||
| CN111892699A | 2020-11-06 |
Other References:
HUANG, YUANYUAN: "Study of Polyhydroxyalkanoates Production by Activated Sludge", BIOTECHNOLOGY BULLETIN = SHENGWU JISHU TONGBAO, BEIJING, no. 6, 26 June 2009 (2009-06-26), Beijing, pages 59 - 61 + 74, XP009549202, ISSN: 1002-5464
YANG WEIGUO, CHEN JIAJUN: "STUDY ON ANAEROBIC ACID -PRODUCING FERMENTATION OF ORGANIC WASTEWATER BY PH", ENVIRONMENTAL ENGINEERING, vol. 26, 30 December 2008 (2008-12-30), pages 136 - 138, XP093032263, DOI: 10.13205/j.hjgc.2008.s1.020
LIAN TZHANG WCAO Q ET AL.: "Enhanced lactic acid production from the anaerobic co-digestion of swine manure with apple or potato waste via ratio adjustment [J", BIORESOURCE TECHNOLOGY, vol. 318, 2020, pages 124237
YANG WEIGUO, CHEN JIAJUN: "STUDY ON ANAEROBIC ACID -PRODUCING FERMENTATION OF ORGANIC WASTEWATER BY PH", ENVIRONMENTAL ENGINEERING, vol. 26, 30 December 2008 (2008-12-30), pages 136 - 138, XP093032263, DOI: 10.13205/j.hjgc.2008.s1.020
LIAN TZHANG WCAO Q ET AL.: "Enhanced lactic acid production from the anaerobic co-digestion of swine manure with apple or potato waste via ratio adjustment [J", BIORESOURCE TECHNOLOGY, vol. 318, 2020, pages 124237
Attorney, Agent or Firm:
CN-KNOWHOW INTELLECTUAL PROPERTY AGENT LIMITED (CN)
Download PDF:
Previous Patent: ENERGY-SAVING QUICK-FREEZING METHOD FOR TRACHINOTUS OVATUS
Next Patent: RADAR BASEBAND MODULE AND RADAR SYSTEM
Next Patent: RADAR BASEBAND MODULE AND RADAR SYSTEM