The Role of Biotechnology in Environmental Engineering, Advances in Waste Treatment and Pollution Control

Abstract

Biotechnology has emerged as a transformative force in environmental engineering, offering sustainable and efficient solutions for waste treatment and pollution control. Conventional physicochemical methods for managing industrial, municipal, and hazardous waste often suffer from high operational costs, secondary pollution, and limited adaptability to complex contaminants. In contrast, biotechnological approaches harness biological systems such as microorganisms, enzymes, plants, and genetically engineered organisms to degrade, transform, or immobilize pollutants in an environmentally benign manner. This review critically examines recent advances in biotechnology-driven waste treatment and pollution control, focusing on biological wastewater treatment, bioremediation of contaminated soils and waters, bioaugmentation, biosorption, and emerging applications of genetic and metabolic engineering. The integration of omics technologies, synthetic biology, and bioprocess optimization has significantly enhanced treatment efficiency and selectivity for recalcitrant pollutants, including heavy metals, persistent organic pollutants, and emerging contaminants. Challenges related to scalability, process stability, regulatory acceptance, and public perception are also discussed. The paper concludes by highlighting future research directions and the role of interdisciplinary collaboration in advancing biotechnology-based environmental engineering solutions toward sustainable development goals.