In the present research study, biosorption efficacy of agro-wastes (rice husk, bagasse, peanut husk, cotton sticks and wheat bran) for U, Zr and Sr removal from aqueous media was investigated. Rice husk, bagasse and peanut husk were selected as most efficient biosorbent for the removal of U, Zr and Sr ions respectively. These selected biomasses were subjected to different pre-treatments (Physical and chemical) and modifications (immobilization). Batch biosorption affecting parameters like pH, sorbent dose, initial metal ion concentration and temperature were optimized for native, pre-treated and immobilized biomasses to get maximum removal. Maximum biosorption capacity values were found at pH (4-5), (3-4) and (7-9) for U, Zr and Sr ions respectively for native, pre- treated and immobilized biomasses. The amount of metal ions sorbed (mg/g) decreased with increasing biosorbent dose and increased at higher initial metal ion concentration. Linear and non-linear regression forms of pseudo-first and second-order were studied and value of R2 and six non-linear regression error functions namely hybrid fractional error function (HYBRID), Marquardt’s percent standard deviation (MPSD), average relative error (ARE), sum of the errors squared (ERRSQ/SSE), sum of the absolute errors (EABS) and Chi-square test (χ2) were used to predict the most optimum kinetic model. Sorbent- sorbate reaction nature was estimated by fitting equilibrium data by non-linear and transformed linear forms of the Langmuir, Freundlich and Redlich-Peterson isotherms and most optimum isothermal model was optimized by comparing linear and non-linear R2 value and non-linear regression error functions. Calculated values of thermodynamic parameters i.e. ΔG ̊, ΔH ̊ and ΔS ̊ showed that studied processes are feasible and spontaneous. Response surface methodology using face-cantered central composite design was used to design experiments for biosorption of U(VI), Zr(IV) and Sr(II) ions onto biomasses. Significance of main, interaction and square effects of quadratic model was determined by ANOVA, F-test and p value. Adsorption/desorption studies showed that biosorbents can be reused successfully. Effect of interfering ions (cations & anions) on the removal efficiencies was studied. The column biosorption was also done and effect of bed height, flow rate and initial metal ion concentration was also studied by breakthrough curves and applying Bed Depth Service (BDST) and Thomas model. BET, SEM-EDX, TGA, XRD and FTIR analysis were carried out to characterize the biomasses. The whole study proved that selected agro-wastes have good removal potential for U(VI), Zr(IV) and Sr(II) ions containing wastewater.
مولانا محمد رفیع افسوس ہے پچھلے دنوں ہمارے نہایت فاضل دوست لیفٹنٹ کرنل خواجہ عبدالرشید کالاہور میں، اورمولانا محمد رفیع صاحب کا انتقال دیوبند میں ہوگیا۔ اوّل الذکر پرتوایک مضمون برہان کی آئندہ اشاعت میں شائع ہوگا۔مولانا محمد رفیع صاحب حضرت شیخ الہندؒ کے نواسے تھے۔ دارالعلوم دیوبند کے فاضل اور پختہ استعداد کے عالم تھے، ان کے والد ماجد مولانا محمد شفیع صاحب جو علم و عمل، تقوی وطہارت اورفقر ودرویشی میں سلف صالحین کے نمونہ تھے۔عرصۂ دراز تک مدرسہ عبدالرب دہلی کے صدر مدرس رہے، مولانا محمد رفیع بھی عمر بھر اس مدرسہ میں استاد رہے۔والد ماجد کی وفات کے بعد مدرسہ کے ناظم بھی ہوگئے تھے۔ عملاً نہایت صالح،عابد وپرہیزگار،خوش پوشاک اورخوش اخلاق تھے، عمر۸۷برس کی ہوئی۔اللھم اغفرلہ وارحمہ۔ [اپریل۱۹۸۳ء]
Almighty Allah created Ãdam and made each and every thing of this Universe in his order to take interest and use it well. But he also made some laws also to follow that he can avoid many mishaps. He sent Prophets for proper guidance of mankind and empowered them with Books containing the laws and instructions according to the need of hours. But Islam is the complete code of life and it has to remain in the world till the last day the Day of Judgment. Islam protected the life and honor of men & women in each and every stage of life. Islam has given all the rights to a woman which a man enjoys at any stage of life. Islam is the supporter of equality among the all human beings and wants to reduce differences made by men themselves so it allows relationships between followers of all religions. Especially among religions. So allowed to get merry with women of other religions like Jews & Christians, the followers of sacred books. By this action it wants to reduce gap among human beings. Islam also allows those women who got married with Muslims to act in their personal lives according to their own religions.
Acer pentapomicum (Family Aceraceae) is commonly known as maple plant. The aim of the study was to evaluate A. pentapomicum for biogenic synthesis of nanoparticles, its characterization, pharmacological importance and micro propagation. A. pentapomicum leaves mediated gold and silver nano-particles were successfully synthesized by reacting 1ml of aqueous leaves extract with different ratios of 1mM AuCl3 and AgNo3 solutions. The synthesis of gold and silver nanoparticles were confirmed and characterized by visual observation, UV-Visible-spectroscopy, scanning electron microscopy (SEM), Energy Dispersive X-ray (EDX), X-Ray Diffraction (XRD) and Fourier Transform Infrared FTIR analysis. Color change from yellowish to dark purple and to reddish brown confirmed the gold and silver nanoparticles synthesis. Gold nanoparticles (AuNps) were stable at 25-35°C, at pH 7-8 and in the presence of millimolar salt (NaCl) solution. Biosynthesized nanoparticles display a characteristic surface plasmon resonance at 568nm (AuNps) and 450nm (AgNps) in UV-Visible spectrum. SEM and EDX analysis also confirmed the presence and synthesis of gold and silver nanoparticles with spherical morphology. XRD patterns reveals the cubic, face centered, crystalline nature of gold and silver nanoparticles. The leaves mediated silver nanoparticles, however, were efficiently produced at a temperature range of 35-55°C and an optimum pH of 6-7. The average size of the synthesized gold and silver nanoparticles found to be in the range of 18-25nm. The FTIR analysis of gold and silver nanoparticles affirmed the presence of certain biomolecules (carboxylic acid, flavonoids, phenols) that act as reducing and capping agent for leaves mediated nanoparticles synthesis. Agar well diffusion method was carried out for potent biocidal activities of gold and silver nanoparticles against different bacterial, fungal and candida strains. Both synthesized nanoparticles showed potent bactericidal, fungicidal and candidacidal activities. However, Klebseilla pneumonia with growth inhibition of 91% was the most susceptible microbe to gold nanoparticles. Antimicrobial activities of A. pentapomicum (leaves and stem) extracted with different organic solvents were also evaluated using Agar disc diffusion and well diffusion bioassay. Leaves extracted samples showed better biocidal activities than stem extracted samples. The most susceptible bacterium was Pseudomonas aeruginosa (79-94%) and Escherichia coli (87-91%), while, the least susceptible was Staphylococcus aureus (26-50%). Citrobacter freundi was the most resistant microbe to different plant extracts. Aspergillus niger was the most inhibited fungal species by both stems and leaves extracts followed by Rizopus oryzae. Regarding the antioxidant activity, different plant extracts and its synthesized nanoparticles possessed proficient antioxidant activity. However, methanolic extract of leaves and ethyl acetate extract of stem recorded maximum antioxidant activity. Gold nanoparticles showed better antioxidant activity than silver nanoparticles. When evaluated for phytotoxic activity, all plant extracts proved to be toxic against Lemna minor, revealing Butanol extract with maximum toxicity (87%). The qualitative analysis of different solvent extracted fractions confirmed the presence of various phytoconstituents such as alkaloids, terpenoids, flavonoids, tannins, saponins, fixed oil, carbohydrates, and proteins etc. A successful micro propagation protocol for the shooting was developed and it was found that full strength woody plant medium (WPM) supplemented with BAP + IAA (2+0.5 mg l-1), recorded maximum shoot induction. Based on these results the plant can be efficiently used for safe, ecofriendly nanoparticles production, and as a biocidal, an antioxidant and a herbicidal agent.