Browsing by Author "Alhazmi, Alaa"
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Item Biological remediation technologies for dyes and heavy metals in wastewater treatment: New insight(Elsevier Ltd, 2022-01) Singh, Arvind; Pal, Dan Bahadur; Mohammad, Akbar; Alhazmi, Alaa; Yoon, Taeho; Srivastava, Neha; Gupta, Vijai Kumar; Haque, Shafiul; Bursa Uludağ Üniversitesi/Tıp Fakültesi.; 0000-0002-2989-121X; EXU-4037-2022; 35793732800The pollution of the environment caused by dyes and heavy metals emitted by industries has become a worldwide problem. The development of efficient, environmentally acceptable, and cost-effective methods of wastewater treatment containing dyes and heavy metals is critical. Biologically based techniques for treating effluents are fascinating since they provide several benefits over standard treatment methods. This review assesses the most recent developments in the use of biological based techniques to remove dyes and heavy metals from wastewater. The remediation of dyes and heavy metals by diverse microorganisms such as algae, bacteria, fungi and enzymes are depicted in detail. Ongoing biological method's advances, scientific prospects, problems, and the future prognosis are all highlighted. This review is useful for gaining a better integrated view of biological based wastewater treatment and for speeding future research on the function of biological methods in water purification applications.Item Integrated biohydrogen production via lignocellulosic waste: Opportunity, challenges & future prospects(Elsevier Sci Ltd, 2021-10) Singh, Tripti; Alhazmi, Alaa; Mohammad, Akbar; Srivastava, Neha; Sharma, Shalini; Singh, Rajeev; Yoon, Taeho; Gupta, Vijai Kumar; Haque, Shafiul; Uludağ Üniversitesi/Tıp Fakültesi; EXU-4037-2022; 35793732800Hydrogen production through biological route is the cleanest, renewable and potential way to sustainable energy generation. Productions of hydrogen via dark and photo fermentations are considered to be more sustainable and economical approach over numerous existing biological modes. Nevertheless, both the biological modes suffer from certain limitations like low yield and production rate, and because of these practical implementations are still far away. Therefore, the present review provides an assessment and feasibility of integrated biohydrogen production strategy by combining dark and photo-fermentation as an advanced biochemical processing while using lignocellulosics biomass to improve and accelerate the biohydrogen production technology in a sustainable manner. This review also evaluates practical viability of the integrated approach for biohydrogen production along with the analysis of the key factors which significantly influence to elevate this technology on commercial ground with the implementation of various environment friendly and innovative approaches.Item Lead removal from synthetic wastewater by biosorbents prepared from seeds of artocarpus heterophyllus and Syzygium Cumini(Elsevier Ltd, 2022-01) Giri, Deen Dayal; Alhazmi, Alaa; Mohammad, Akbar; Srivastava, Neha; Thakur, Vijay Kumar; Gupta, Vijai Kumar; Pal, Dan Bahadur; Haque, Shafiul; Bursa Uludağ Üniversitesi/Tıp Fakültesi/Biyokimya Bölümü.; 0000-0002-2989-121X; EXU-4037-2022; 35793732800The present investigation deals with removal of lead (Pb+2) ions from waste water using biosorbent prepared from seeds of Artocarpus heterophyllus (SBAh) and Syzygium cumini (SBSc). Biosorbents surface has been characterized through FT-IR spectroscopy to probe the presence of functional groups. Response surface methodology enabled optimized conditions (Pb+2 concentration 2 mu g/mL, pH 5.8 and bioadsorbent dose 60 mg) resulted in Pb+2 removal similar to 96% for SBAh and similar to 93% for SBSc at agitation speed 300 rpm. The adsorption capacity has been found to be 4.93 mg/g for SBAh and 3.95 mg/g for SBSc after 70 min. At optimal experimental conditions, kinetics of biosorption was explained well by inter-particle diffusion model for SBAh (R-2 = 0.99) whereas Elovich model best fitted for SBSc (R-2 = 0.98). Further, both the biosorbents followed Temkin adsorption isotherm model.Publication Sustainable green approach to synthesize Fe₃O₄/α-Fe₂O₃ nanocomposite using waste pulp of Syzygium cumini and its application in functional stability of microbial cellulases(Nature Portfolio, 2021-12-21) Srivastava, Neha; Srivastava, Manish; Alhazmi, Alaa; Mohammad, Akbar; Khan, Saif; Pal, Dan Bahadur; Haque, Shafiul; Singh, Rajeev; Mishra, P. K.; Gupta, Vijai Kumar; Haque, Shafiul; Bursa Uludağ Üniversitesi/Tıp Fakültesi.; 0000-0002-2989-121X; AAN-2946-2020Synthesis of nanomaterials following green routes have drawn much attention in recent years due to the low cost, easy and eco-friendly approaches involved therein. Therefore, the current study is focused towards the synthesis of Fe₃O₄/alpha-Fe₂O₃ nanocomposite using waste pulp of Jamun (Syzygium cumini) and iron nitrate as the precursor of iron in an eco-friendly way. The synthesized Fe₃O₄/alpha-Fe₂O₃ nanocomposite has been extensively characterized through numerous techniques to explore the physicochemical properties, including X-ray diffraction, Fourier transform infrared spectroscopy, Raman spectroscopy, Ultraviolet-Vis spectroscopy, field emission scanning electron microscope, high resolution transmission electron microscope and vibrating sample magnetometer. Further, efficiency of the Fe₃O₄/alpha-Fe₂O₃ nanocomposite has been evaluated to improve the incubation temperature, thermal/pH stability of the crude cellulase enzymes obtained from the lab isolate fungal strain Cladosporium cladosporioides NS₂ via solid state fermentation. It is found that the presence of 0.5% Fe₃O₄/alpha-Fe₂O₃ nanocomposite showed optimum incubation temperature and thermal stability in the long temperature range of 50-60 degrees C for 15 h along with improved pH stability in the range of pH 3.5-6.0. The presented study may have potential application in bioconversion of waste biomass at high temperature and broad pH range.