The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 04, 2026
Filed:
Feb. 23, 2022
Chinese Research Academy of Environmental Sciences, Beijing, CN;
Lei Wang, Beijing, CN;
Beidou XI, Beijing, CN;
Honghu Zeng, Beijing, CN;
Nan Xu, Beijing, CN;
Yan Shao, Beijing, CN;
Shaofeng Li, Beijing, CN;
Ming Chang, Beijing, CN;
Jinsheng Wang, Beijing, CN;
Xiaoshu Wang, Beijing, CN;
Yangyang Wang, Beijing, CN;
Gen Zhang, Beijing, CN;
Lulu Pan, Beijing, CN;
Jing Wang, Beijing, CN;
CHINESE RESEARCH ACADEMY OF ENVIRONMENTAL SCIENCES, Beijing, CN;
Abstract
A porous biochar for improving heavy pollution and a method for producing the same. Said porous biochar is prepared as follows: arrowhead, which has excellent enrichment of lead, is used to absorb heavy metal lead in polluted water or artificial wetlands, simultaneously absorb heavy metal cadmium, thereafter is dried and treated as a biomass, and then the biomass is calcined in stages with a passivating agent in a high temperature environment, so as to heavy metals such as lead and cadmium be stably coated or enriched in a biochar, which is mixed withhaving high resistant, to obtain the porous biochar; the porous biochar has high specific surface area, high porosity and excellent mechanical properties, is very stable under different acid-base environments and oxidizing conditions.