| Title |
Integrated applications of water hyacinth biochar: A circular economy case study |
| ID_Doc |
16817 |
| Authors |
He, X; Wang, YY; Tai, MH; Lin, A; Owyong, S; Li, X; Leong, K; Yusof, MLM; Ghosh, S; Wang, CH |
| Title |
Integrated applications of water hyacinth biochar: A circular economy case study |
| Year |
2022 |
| Published |
|
| DOI |
10.1016/j.jclepro.2022.134621 |
| Abstract |
Water hyacinth (WH) gasification, which generates syngas and biochar, is a promising thermochemical approach for bioenergy production and greenhouse gas mitigation. In this study, three different WH gasification biochar applications have been demonstrated: agricultural soil amendment, activation for activated carbon, and augmented concrete generation. In the agricultural soil application, the soil characteristics of pH, electrical conductivity and volumetric water content were improved when applying biochar as amendment material. The suggested biochar application ratio was 30-45% for optimal sunflower yield represented by the harvested seed weight. Through the proposed activation approach, the BET surface area of WH biochar was improved from 65.84 to 217.32 m2/g. In the augmented concrete application, the ball mill WH biochar resulted in 19.1% and 13.7% enhancements on compressive and flexural strength, respectively. Moreover, all the three proposed ap-plications resulted in negative GHG emissions, showing good potential toward carbon neutrality. |
| Author Keywords |
Water hyacinth; Biochar; Activated carbon; Augmented concrete; GHG emission |
| Index Keywords |
Index Keywords |
| Document Type |
Other |
| Open Access |
Open Access |
| Source |
Science Citation Index Expanded (SCI-EXPANDED) |
| EID |
WOS:000885758900006 |
| WoS Category |
Green & Sustainable Science & Technology; Engineering, Environmental; Environmental Sciences |
| Research Area |
Science & Technology - Other Topics; Engineering; Environmental Sciences & Ecology |
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