Techno-Economic Assessment of Microbe-Assisted Wastewater Treatment Strategies for Energy and Value-Added Product Recovery

2019 ◽  
pp. 147-181 ◽  
Author(s):  
Bikash Kumar ◽  
Komal Agrawal ◽  
Nisha Bhardwaj ◽  
Venkatesh Chaturvedi ◽  
Pradeep Verma
Keyword(s):  
Wastewater Treatment ◽  
Treatment Strategies ◽  
Value Added ◽  
Economic Assessment ◽  
Product Recovery

Microalgal Photobioreactors as an Integrated Approach for Simultaneous Wastewater Treatment, Carbon Sequestration, and Recovery of Valuable Resources

2021 ◽  
pp. 174-195
Author(s):  
Priya Banerjee ◽  
Aniruddha Mukhopadhyay
Keyword(s):  
Wastewater Treatment ◽  
Energy Input ◽  
Emerging Contaminants ◽  
Treatment Strategies ◽  
Value Added ◽  
Integrated Approach ◽  
Wastewater Remediation ◽  
Antibiotic Drugs ◽  
Zero Discharge ◽  
Efficient Recovery

Unplanned and unmonitored growth of civilization and industries recorded in the previous decades have resulted in the introduction of several pollutants of emerging concern like pharmaceuticals and antibiotic drugs, endocrine disrupters, personal care products, etc. in adjacent aquatic environments. Moreover, the primary considerations of recent wastewater treatment strategies include energy neutrality and efficient recovery of valuable products as end/byproducts of the concerned process. The present study reviews such recent advances in designs, development, and implementation of algae based photobioreactors for simultaneous CO2 capture and treatment of effluents containing various types of emerging contaminants with negligible energy input. It also discusses the subsequent usage of algal biomass for production of value-added products like bioethanol, alginate, etc. This study has primarily addressed the potential and limitations of such photobioreactors for simultaneous achievement of wastewater remediation, CO2 sequestration, and bioenergy production with a zero-discharge concept.

Biorefinery implementation for recovery debottlenecking at existing pulp mills- Part II: Techno-economic evaluation

TAPPI Journal ◽  
2012 ◽  
Vol 11 (8) ◽  
pp. 17-24 ◽  
Author(s):  
HAKIM GHEZZAZ ◽  
LUC PELLETIER ◽  
PAUL R. STUART
Keyword(s):  
Cost Estimation ◽  
Process Model ◽  
Black Liquor ◽  
Pulp Mill ◽  
Value Added ◽  
Economic Assessment ◽  
Extraction Process ◽  
Estimation Methods ◽  
Precipitation Process

The evaluation and process risk assessment of (a) lignin precipitation from black liquor, and (b) the near-neutral hemicellulose pre-extraction for recovery boiler debottlenecking in an existing pulp mill is presented in Part I of this paper, which was published in the July 2012 issue of TAPPI Journal. In Part II, the economic assessment of the two biorefinery process options is presented and interpreted. A mill process model was developed using WinGEMS software and used for calculating the mass and energy balances. Investment costs, operating costs, and profitability of the two biorefinery options have been calculated using standard cost estimation methods. The results show that the two biorefinery options are profitable for the case study mill and effective at process debottlenecking. The after-tax internal rate of return (IRR) of the lignin precipitation process option was estimated to be 95%, while that of the hemicellulose pre-extraction process option was 28%. Sensitivity analysis showed that the after tax-IRR of the lignin precipitation process remains higher than that of the hemicellulose pre-extraction process option, for all changes in the selected sensitivity parameters. If we consider the after-tax IRR, as well as capital cost, as selection criteria, the results show that for the case study mill, the lignin precipitation process is more promising than the near-neutral hemicellulose pre-extraction process. However, the comparison between the two biorefinery options should include long-term evaluation criteria. The potential of high value-added products that could be produced from lignin in the case of the lignin precipitation process, or from ethanol and acetic acid in the case of the hemicellulose pre-extraction process, should also be considered in the selection of the most promising process option.

Sustainable development of wastewater treatment strategies for the food industries

2002 ◽  
Vol 45 (12) ◽  
pp. 315-320 ◽  
Author(s):  
I. Sekoulov
Keyword(s):  
Sustainable Development ◽  
Wastewater Treatment ◽  
Treatment Strategies ◽  
Future Generations ◽  
The Sustainable Development ◽  
Total Cost ◽  
Integrated Production ◽  
Food Industries ◽  
Production Processes ◽  
Process Wastewater

The sustainable development of environmental protection is a newly created philosophy. It means continuous development of better protection of the air, soil, water and resources, used from the industry, to be saved also for future generations. The globalization of the economy is another process, which interferes with environmental ideas, and an equilibrium with the socio-eco-sustainable development is wanted. The industry is subjected to big changes depending on economic development. Thus the treatment plants at the end of the pipe must be constructed with maximum flexibility. A removal of constructed devices, if not necessary, must be considered from the beginning as a possibility. Priority is given to integrated production processes solving wastewater problems directly by production devices. The treatment of the process wastewater streams separately will become more important. The end of the pipe solutions will be less complicated and more reliable. The reuse of valuable waste substances and treated water will reduce the total cost of the treatment plants substantially.

Value-added bioplastics from services of wastewater treatment

2015 ◽  
Vol 10 (3) ◽  
pp. 546-555 ◽  
Author(s):  
M. Arcos-Hernández ◽  
L. Montaño-Herrera ◽  
O. Murugan Janarthanan ◽  
L. Quadri ◽  
S. Anterrieu ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Real Life ◽  
Value Added ◽  
Renewable Resource ◽  
Economic Networks ◽  
Technical Feasibility ◽  
Material Supply ◽  
The Social ◽  
Essential Services ◽  
Fundamental Research

Pilot and prototyping scale investigations were undertaken in order to evaluate the technical feasibility of producing value-added biopolymers (polyhydroxyalkanoates (PHAs)) as a by-product to essential services of wastewater treatment and environmental protection. A commonly asked question concerns PHA quality that may be expected from surplus biomass produced during biological treatment for water quality improvement. This paper summarizes the findings from a collection of investigations. Alongside the summarized technical efforts, attention has been paid to the social and economic networks. Such networks are needed in order to nurture circular economies that would drive value chains in renewable resource processing from contaminated water amelioration into renewable value-added bioplastic products and services. We find commercial promise in the polymer quality and in the process technical feasibility. The next challenge ahead does not reside so much any more in fundamental research and development of the technology but, rather, in social-economic steps that will be necessary to realize first demonstration scale polymer production activities. It is a material supply that will stimulate niche business opportunities that can grow and stimulate technology pull with benefit of real life material product market combinations.

Value-Added Product Recovery from Banana Plant Waste: A Sustainable Way for Development

2011 ◽  
pp. 339-349
Author(s):  
Khan M. Qureshi ◽  
Suhail A. Soomro ◽  
Shaheen Aziz ◽  
Imran Nazir Unar
Keyword(s):  
Value Added ◽  
Product Recovery ◽  
Banana Plant ◽  
Plant Waste
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