Remediation of contaminants from wastewater using algal nanoparticles via green chemistry approach: an organized review DOI
Anuj Sharma, Kaushik Pal, Neha Saini

et al.

Nanotechnology, Journal Year: 2023, Volume and Issue: 34(35), P. 352001 - 352001

Published: May 11, 2023

Bio-nanotechnology is one of the new and sound techniques that have various advantages over conventional methods wastewater treatment. The utilization nanomaterials like nanoparticles for treatment emerging field research. Both physical chemical can be used nanoparticle synthesis, but synthesis based on algae (biological method) has numerous others as it environmentally friendly sustainable. Top-down bottom-up are two approaches generally, bio-reduction (bottom-up approach) to synthesize nanoparticles. Nanoparticles synthesized inside cell called intracellular outside surface extracellular synthesis. Temperature, pH, reaction time some factors influence size, properties Characterization carried out with help UV-visible spectroscopy (UV-vis), x-ray diffraction, Fourier transfer infrared spectroscopy, etc. Algal highly efficient in remediation contaminants heavy metals dyes from wastewater. In present review, algal containing metals, dye, discussed. Moreover, challenges opportunities this also highlighted. As its initial stage, therefore, a lot research gaps present, which only filled by further

Language: Английский

Production and characterization of hydrochars and their application in soil improvement and environmental remediation DOI Creative Commons
Anahita Khosravi, Hao Zheng, Qiang Liu

et al.

Chemical Engineering Journal, Journal Year: 2021, Volume and Issue: 430, P. 133142 - 133142

Published: Oct. 25, 2021

Language: Английский

Citations

164
Biochar application for greenhouse gas mitigation, contaminants immobilization and soil fertility enhancement: A state-of-the-art review DOI
Abhishek Kumar Singh, Anamika Shrivastava, Vineet Vimal

et al.

The Science of The Total Environment, Journal Year: 2022, Volume and Issue: 853, P. 158562 - 158562

Published: Sept. 8, 2022

Language: Английский

Citations

151
Seaweed for climate mitigation, wastewater treatment, bioenergy, bioplastic, biochar, food, pharmaceuticals, and cosmetics: a review DOI Creative Commons
Mohamed Farghali, Israa M. A. Mohamed, Ahmed I. Osman

et al.

Environmental Chemistry Letters, Journal Year: 2022, Volume and Issue: 21(1), P. 97 - 152

Published: Oct. 8, 2022

Abstract The development and recycling of biomass production can partly solve issues energy, climate change, population growth, food feed shortages, environmental pollution. For instance, the use seaweeds as feedstocks reduce our reliance on fossil fuel resources, ensure synthesis cost-effective eco-friendly products biofuels, develop sustainable biorefinery processes. Nonetheless, in several biorefineries is still infancy stage compared to terrestrial plants-based lignocellulosic biomass. Therefore, here we review seaweed with focus production, economical benefits, feedstock for anaerobic digestion, biochar, bioplastics, crop health, food, livestock feed, pharmaceuticals cosmetics. Globally, could sequester between 61 268 megatonnes carbon per year, an average 173 megatonnes. Nearly 90% sequestered by exporting deep water, while remaining 10% buried coastal sediments. 500 gigatonnes replace nearly 40% current soy protein production. Seaweeds contain valuable bioactive molecules that be applied antimicrobial, antioxidant, antiviral, antifungal, anticancer, contraceptive, anti-inflammatory, anti-coagulants, other cosmetics skincare products.

Language: Английский

Citations

138
Materials, fuels, upgrading, economy, and life cycle assessment of the pyrolysis of algal and lignocellulosic biomass: a review DOI Creative Commons
Ahmed I. Osman, Mohamed Farghali, Ikko Ihara

et al.

Environmental Chemistry Letters, Journal Year: 2023, Volume and Issue: 21(3), P. 1419 - 1476

Published: Feb. 24, 2023

Abstract Climate change issues are calling for advanced methods to produce materials and fuels in a carbon–neutral circular way. For instance, biomass pyrolysis has been intensely investigated during the last years. Here we review of algal lignocellulosic with focus on products mechanisms, oil upgrading, combining anaerobic digestion, economy, life cycle assessment. Products include oil, gas, biochar. Upgrading techniques comprise hot vapor filtration, solvent addition, emulsification, esterification transesterification, hydrotreatment, steam reforming, use supercritical fluids. We examined economic viability terms profitability, internal rate return, return investment, carbon removal service, product pricing, net present value. also reviewed 20 recent studies found that method highly influenced yield, ranging from 9.07 40.59% 10.1 41.25% biochar, 11.93 28.16% syngas. Feedstock type, pyrolytic temperature, heating rate, reaction retention time were main factors controlling distribution products. Pyrolysis mechanisms bond breaking, cracking, polymerization re-polymerization, fragmentation. Biochar residual forestry could sequester 2.74 tons dioxide equivalent per ton biochar when applied soil thus potential remove 0.2–2.75 gigatons atmospheric annually. The generation bio-oil process is estimated be economically feasible.

Language: Английский

Citations

103
Recent progresses, challenges, and opportunities of carbon-based materials applied in heavy metal polluted soil remediation DOI

Tianhong Fu,

Baige Zhang, Xing Gao

et al.

The Science of The Total Environment, Journal Year: 2022, Volume and Issue: 856, P. 158810 - 158810

Published: Sept. 23, 2022

Language: Английский

Citations

85
Life cycle assessment of microalgae systems for wastewater treatment and bioproducts recovery: Natural pigments, biofertilizer and biogas DOI
Larissa T. Arashiro, Irene Josa, Ivet Ferrer

et al.

The Science of The Total Environment, Journal Year: 2022, Volume and Issue: 847, P. 157615 - 157615

Published: July 25, 2022

Language: Английский

Citations

78
Nutrient Removal by Algae-Based Wastewater Treatment DOI Creative Commons
Luong N. Nguyen, Lisa Aditya,

Hang P. Vu

et al.

Current Pollution Reports, Journal Year: 2022, Volume and Issue: 8(4), P. 369 - 383

Published: Aug. 18, 2022

Abstract Algae cultivation complements wastewater treatment (WWT) principles as the process uptakes nutrients while assimilates CO 2 into biomass. Thus, application of algae-based WWT is on upward trajectory more attention for recovery and capture reducing its economic challenge in circular economy concept. However, complexity algal ecological characteristics induces techno-economic challenges industry implementation. Algae-based relies totally ability algae to uptake store Therefore, removal efficiency proportional biomass productivity. This mechanism limits applications low nutrient concentration wastewater. The hydraulic retention time (HRT) significantly long (i.e. > 10 days), compared a few hours bacteria-based process. Phototrophic are most used studies well pilot-scale trials. Application phototrophic faces supply illumination. Collectively, significant landscape required has limited organic removals, which require pretreatment wastewaters before flowing can be connection with remove partial capturing . Future research should strive achieve fast high growth rate, strong environmental tolerance species, simple downstream processing high-value There also clear urgent need systematic analysis both carbon credit assessment values facilitate identification prioritisation barriers lower cost WWT. Graphical abstract

Language: Английский

Citations

75
Microalgae as next generation plant growth additives: Functions, applications, challenges and circular bioeconomy based solutions DOI Creative Commons

Priyanka Parmar,

Raman Kumar,

Yograj Neha

et al.

Frontiers in Plant Science, Journal Year: 2023, Volume and Issue: 14

Published: March 30, 2023

Sustainable agriculture practices involve the application of environment-friendly plant growth promoters and additives that do not negatively impact health ecosystem. Stringent regulatory frameworks restricting use synthetic agrochemicals increase in demand for organically grown crops have paved way development novel bio-based promoters. In this context, microalgae biomass derived offer sources promotors enhance crop productivity impart disease resistance. These beneficial effects could be attributed to presence wide range biomolecules such as soluble amino acid (AA), micronutrients, polysaccharides, phytohormones other signaling molecules biomass. addition, their phototrophic nature, high photosynthetic efficiency, environmental adaptability make them an attractive source biostimulants, biofertilizers biopesticides. The present review aims describe various promoting metabolites produced by on productivity. Further, elicited biostimulants with respect different modes applications seed treatments, foliar spray soil/root drenching is reviewed detail. ability tolerance against abiotic biotic stressors along mechanism action discussed paper. Although based gaining popularity, nutrient water requirements energy intensive downstream processes makes technology commercially unsustainable. Addressing challenge, we propose a circular economy model mediated bioremediation coupled biorefinery approaches generating value biofertilizer applications. We discuss new trends enhancing sustainability production co-cultivation algae hydroponics utilization effluents.

Language: Английский

Citations

75
Exploitation of lignocellulosic-based biomass biorefinery: A critical review of renewable bioresource, sustainability and economic views DOI
Zhonghao Chen, Lin Chen, Kuan Shiong Khoo

et al.

Biotechnology Advances, Journal Year: 2023, Volume and Issue: 69, P. 108265 - 108265

Published: Oct. 1, 2023

Language: Английский

Citations

75
Advances and prospects of biochar in improving soil fertility, biochemical quality, and environmental applications DOI Creative Commons
Jaya Nepal, Wiqar Ahmad, Fazal Munsif

et al.

Frontiers in Environmental Science, Journal Year: 2023, Volume and Issue: 11

Published: Feb. 16, 2023

With the global food deficit increasing and rising climate change issues, there is a need to find green solutions improve soil fertility productivity while enhancing biochemical quality reducing ecological impact of agriculture. Biochar potentially cost-effective, carbonaceous resource with many agricultural environmental applications. As amendment, it improves physical properties increases productivity—particularly over long-term—increasing aggregation, water retention, pH, microbial activities, thus, improving overall quality, helping reduce chemical fertilizer needs time. The extent biochar’s on physiochemical varies depending biochar source, type, size, inherent characteristics, cropping system, etc. Moreover, has significant potential in remediation, especially through its unique adsorption capable capture immobilize pollutants such as metal(loid)s, organic pollutants, hazardous emerging contaminants microplastics. Further, also emerged key strategic, cost-effective material tackle issues mitigation, net greenhouse gas emission minimize warming potential. However, knowledge gap remains understanding long-term persistence agroecosystem, optimal application rate for diversity biochar-soil-crop-environmental conditions, interaction carbon stock, specific mechanisms effect biotic properties, quantification sequestration, emissions, synergy or antagonistic effects other sources compost, manure, residues, etc., modification applications associated human risks long-term. Further research needed evaluate impacts types sizes recommend suitable practices based management system. Also, be finetuned wider target pressing pollution.

Language: Английский

Citations

72