Adsorptive removal of emerging contaminants like antibiotics from aqueous systems having one or more antibiotics using acid activated carbon have rarely been studied and reported. Current study deals with the adsorptive removal of individual antibiotic species i.e. Ciprofloxacin (CIP) and Amoxicillin (AMX) from single (CIP and AMX) and binary (CIP+AMX) adsorption systems using acid activated carbon prepared from Prosopis juliflora wood (PPJ). Binary adsorption system involved the synergistic and antagonistic influence of one antibiotic over the adsorption of other antibiotic. Physico-chemical alterations of PPJ surface due to acid activation and after adsorption were characterized for any surface modification. Parameters influencing the efficient adsorption of CIP and AMX viz. initial pH of antibiotic solution, dosage of PPJ, sorbent-sorbate incubation temperature and initial concentration of antibiotic species were optimized. Sorbate-sorbent interaction studies for single system revealed sorbate’s monolayer formation over adsorbent’s surface and the involvement of chemisorption as verified by Langmuir isotherm model and pseudo-second order model respectively. For single system, Langmuir maximum adsorption capacity of PPJ was 250 mg/g for CIP and 714.29 mg/g for AMX. Meanwhile, competitive Langmuir model was used to investigate adsorption capacity of individual antibiotics in binary system i.e. 370.37 mg/g for CIP and 482.14 mg/g for AMX thus verifying CIP has antagonistic effect on AMX adsorption and AMX has synergistic effect on CIP adsorption on PPJ surface. Recyclability studies verified the PPJ can be used up to 4 cycles and co-existing cationic and anionic salts had minimal effect on the adsorption of antibiotics over PPJ surface. Conclusively PPJ proved efficient in eliminating emerging contaminants like that of antibiotics and thus it can be exploited for other grades of pollutants.

很少有研究和报道使用酸性活性炭从具有一种或多种抗生素的水性体系中吸附去除新兴污染物（如抗生素）。目前的研究涉及使用从Prosopis juliflora制备的酸性活性炭，从单一（CIP和AMX）和二元（CIP + AMX）吸附系统中吸附去除单个抗生素种类（即环丙沙星（CIP）和阿莫西林（AMX））木（PPJ）。二元吸附系统涉及一种抗生素对另一种抗生素的吸附的协同和拮抗作用。PPJ表面由于酸的活化和吸附后的物理化学变化被表征为任何表面改性。影响CIP和AMX有效吸附的参数。优化了抗生素溶液的初始pH，PPJ的用量，吸附剂-山梨酸酯的孵育温度和抗生素种类的初始浓度。单一系统的吸附剂-吸附剂相互作用研究表明，吸附剂在吸附剂表面形成单层，并分别通过Langmuir等温模型和伪二级模型验证了化学吸附的参与。对于单个系统，CIP的Langmuir PPJ的最大吸附容量为250 mg / g，AMX的最大吸附容量为714.29 mg / g。同时，通过竞争性Langmuir模型研究了二元体系中单个抗生素的吸附能力，即CIP为370.37 mg / g，AMX为482.14 mg / g，从而证明了CIP对AMX的吸附有拮抗作用，AMX对CIP对PPJ的吸附有协同作用。表面。可回收性研究证明，PPJ最多可使用4个循环，并且共存的阳离子盐和阴离子盐对抗生素在PPJ表面的吸附影响最小。最终，PPJ被证明可以有效消除诸如抗生素等新兴污染物，因此可以用于其他等级的污染物。对于AMX为14 mg / g，从而证明CIP对AMX吸附具有拮抗作用，并且AMX对PPJ表面上的CIP吸附具有协同作用。可回收性研究证明，PPJ最多可使用4个循环，并且共存的阳离子盐和阴离子盐对抗生素在PPJ表面的吸附影响最小。最终，PPJ被证明可有效消除诸如抗生素等新兴污染物，因此可用于其他等级的污染物。对于AMX为14 mg / g，从而证明CIP对AMX吸附具有拮抗作用，而AMX对PPJ表面上的CIP吸附具有协同作用。可回收性研究证明，PPJ最多可使用4个循环，并且共存的阳离子盐和阴离子盐对抗生素在PPJ表面的吸附影响最小。最终，PPJ被证明可以有效消除诸如抗生素等新兴污染物，因此可以用于其他等级的污染物。