Patent · US Active

Method to valorize 2G bioethanol waste streams

US11623937B2 · kind B2 · utility

0Cited by

3References

10Claims

0Family size

Assignees

Indian Oil Corporation Limited · IN
Department of Biotechnology · IN

Inventors

Alok SATLEWAL · Barwala, IN
Ruchi AGRAWAL · Faridabad, IN
Ravindra Kumar · Cambridge, US
Ravi Prakash GUPTA · Sindhar, IN
Suresh Kumar Puri · Faridabad, IN
Deepak Saxena · Faridabad, IN
Sankara Sri Venkata RAMAKUMAR · Faridabad, IN

Key dates

Filing date	Aug 25, 2021
Grant date	Apr 11, 2023
Priority date	—
Expiry date	Dec 25, 2041

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02E50/10
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

An integrated approach for utilizing waste products of 2G bio-refineries to fractionate the lignin of high purity. The present invention also provides a method of recycling of two waste products (2-G ethanol residue as the substrate (LRBR) and fusel oil/synthetic fusel oil (SFO) as one of the solvent) of the biorefineries in a beneficial manner to fractionate the lignin of high purity. The present method of separating high purity lignin comprises fractioning extractive-free lignin rich residue with a solvent, wherein the solvent is a mixture of SFO/Fusel oil and Formic acid. An optimized ratio of waste fusel oil and formic acid gave more than >85% yields of high purity lignin.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.