Study on Process Parameters in Hydrothermal Liquefaction of Rice Straw and Cow Dung: Product Distribution and Application of Biochar in Wastewater Treatment

Asiful H. Seikh; Hamad F. Alharbi; Ibrahim A. Alnaser; Mohammad R. Karim; Jabair A. Mohammed; Muhammad Omer Aijaz; Ahmed Hassan; Hany S. Abdo

LAPSE

Living Archive for Process Systems Engineering

LAPSE:2024.0236

Published Article

LAPSE:2024.0236

Study on Process Parameters in Hydrothermal Liquefaction of Rice Straw and Cow Dung: Product Distribution and Application of Biochar in Wastewater Treatment

Asiful H. Seikh, Hamad F. Alharbi, Ibrahim A. Alnaser, Mohammad R. Karim, Jabair A. Mohammed, Muhammad Omer Aijaz, Ahmed Hassan, Hany S. Abdo

February 10, 2024

In this study, rice straw (RS) and cow dung (CD) waste were hydrothermally processed for the recovery of bio-oil and biochar. The hydrothermal experiments were performed in a 5 L capacity reactor under the following process conditions: temperature (240−340 °C), solvent to biomass ratios of 1:1, 1:2, 2:1, 1:3 and 3:1, a time of 1 h and a pressure of 15 bar. The HTL products were characterized via FTIR, SEM and GC−MS (gas chromatography mass spectrometry). It was seen that the maximum bio-oil yield was 32.5 wt% and the biochar yield was 18.5 wt% for the 2:1 RS:CD mixture at a temperature of 320 °C. The bio-oil contained hexadecane, heptadecane, octadecane and other hydrocarbons, and their presence was confirmed by GC−MS. The biochar was analyzed, and it was used in wastewater treatment to remove the colorants. The biochar also showed some promising results in the colorants removal study, with an efficiency of more than 76%.

Record ID

LAPSE:2024.0236

Keywords

bio-char, bio-oil, colorants, cow dung, hydrothermal liquefaction, rice straw

Subject

Process Design

Suggested Citation

Seikh AH, Alharbi HF, Alnaser IA, Karim MR, Mohammed JA, Aijaz MO, Hassan A, Abdo HS. Study on Process Parameters in Hydrothermal Liquefaction of Rice Straw and Cow Dung: Product Distribution and Application of Biochar in Wastewater Treatment. (2024). LAPSE:2024.0236

Author Affiliations

Seikh AH: Center of Excellence for Research in Engineering Materials (CEREM), Deanship of Scientific Research, King Saud University, Riyadh 11421, Saudi Arabia [ORCID]
Alharbi HF: Mechanical Engineering Department, College of Engineering, King Saud University, Riyadh 11421, Saudi Arabia [ORCID]
Alnaser IA: Mechanical Engineering Department, College of Engineering, King Saud University, Riyadh 11421, Saudi Arabia [ORCID]
Karim MR: Center of Excellence for Research in Engineering Materials (CEREM), Deanship of Scientific Research, King Saud University, Riyadh 11421, Saudi Arabia [ORCID]
Mohammed JA: Center of Excellence for Research in Engineering Materials (CEREM), Deanship of Scientific Research, King Saud University, Riyadh 11421, Saudi Arabia [ORCID]
Aijaz MO: Center of Excellence for Research in Engineering Materials (CEREM), Deanship of Scientific Research, King Saud University, Riyadh 11421, Saudi Arabia [ORCID]
Hassan A: Mechanical Engineering Department, College of Engineering, King Saud University, Riyadh 11421, Saudi Arabia [ORCID]
Abdo HS: Center of Excellence for Research in Engineering Materials (CEREM), Deanship of Scientific Research, King Saud University, Riyadh 11421, Saudi Arabia [ORCID]

Journal Name

Processes

Volume

11

Issue

9

First Page

2779

Year

2023

Publication Date

2023-09-18