Nickel augmented biochar for sustaining produced water treatment to decarbonize oil and gas industrial waste using anaerobic-aerobic granular cylindrical periodic discontinuous batch reactors

被引：1

作者：

Jagaba, Ahmad Hussaini ^{[1
]}

Lawal, Dahiru U. ^{[1
]}

Yassin, Mohamed A. ^{[1
]}

Abdulazeez, Ismail ^{[1
]}

Muazu, Nuhu Dalhat ^{[2
]}

Usman, Abdullahi Kilaco ^{[3
]}

Lim, Jun Wei ^{[4
,5
]}

Aljundi, Isam H. ^{[1
,6
]}

机构：

[1] King Fahd Univ Petr & Minerals, Interdisciplinary Res Ctr Membranes & Water Secur, Dhahran 31261, Saudi Arabia

[2] Imam Abdulrahman Bin Faisal Univ, Coll Engn, Dept Environm Engn, POB 1982, Dammam 31451, Saudi Arabia

[3] Univ Hafr Al Batin, Coll Engn, Dept Civil Engn, POB 1803, Hafar al Batin 39524, Saudi Arabia

[4] Univ Teknol PETRONAS, Inst Sustainable Energy, HICoE Ctr Biofuel & Biochem Res, Dept Fundamental & Appl Sci, Seri Iskandar 32610, Perak Darul Rid, Malaysia

[5] Saveetha Univ, Saveetha Inst Med & Tech Sci, Saveetha Sch Engn, Dept Biotechnol, Chennai, India

[6] King Fahd Univ Petr & Minerals, Dept Chem Engn, Dhahran 31261, Saudi Arabia

来源：

ENVIRONMENTAL RESEARCH | 2024年 / 257卷

关键词：

Aerobic granulation; Carbon neutrality; Produced water treatment; Periodic discontinuous batch reactors; Sustainable development goals (SDGs); REMOVAL; SLUDGE; OPTIMIZATION; CONSORTIUM; DIVERSITY; SALINE; DYE;

D O I：

10.1016/j.envres.2024.119381

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

This study assessed the efficacy of granular cylindrical periodic discontinuous batch reactors (GC-PDBRs) for produced water (PW) treatment by employing eggshell and waste activated sludge (WAS) derived Nickel (Ni) augmented biochar. The synthesized biochar was magnetized to further enhance its contribution towards achieving carbon neutrality due to carbon negative nature, Carbon dioxide (CO2) sorption, and negative priming effects. The GC-PDBR1 and GC-PDBR2 process variables were optimized by the application of central composite design (CCD). This is to maximize the decarbonization rate. Results showed that the systems could reduce total phosphorus (TP) and chemical oxygen demand (COD) by 76-80% and 92-99%, respectively. Optimal organic matter and nutrient removals were achieved at 80% volumetric exchange ratio (VER), 5 min settling time and 3000 mg/L mixed liquor suspended solids (MLSS) concentration with desirability values of 0.811 and 0.954 for GC-PDBR1 and GC-PDBR2, respectively. Employing four distinct models, the biokinetic coefficients of the GCPDBRs treating PW were calculated. The findings indicated that First order (0.0758-0.5365) and Monod models (0.8652-0.9925) have relatively low R2 values. However, the Grau Second-order model and Modified Stover-Kincannon model have high R2 values. This shows that, the Grau Second Order and Modified StoverKincannon models under various VER, settling time, and MLSS circumstances, are more suited to explain the removal of pollutants in the GC-PDBRs. Microbiological evaluation demonstrated that a high VER caused notable rises in the quantity of several microorganisms. Under high biological selective pressure, GC-PDBR2 demonstrated a greater percentage of nitrogen removal via autotrophic denitrification and a greater number of nitrifying bacteria. The overgrowth of bacteria such as Actinobacteriota spp. Bacteroidota spp, Gammaproteobacteria, Desulfuromonas Mesotoga in the phylum, class, and genus, has positively impacted on granule formation and stability. Taken together, our study through the introduction of intermittent aeration GC-PDBR systems with added magnetized waste derived biochar, is an innovative approach for simultaneous aerobic sludge granulation and PW treatment, thereby providing valuable contributions in the journey toward achieving decarbonization, carbon neutrality and sustainable development goals (SDGs).

引用

页数：19